Articles | Volume 22, issue 4
https://doi.org/10.5194/bg-22-863-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-863-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Reviews and syntheses
| 
18 Feb 2025
Reviews and syntheses |
| 18 Feb 2025
| 18 Feb 2025
Reviews and syntheses: Review of proxies for low-oxygen paleoceanographic reconstructions
Babette A.A. Hoogakker
CORRESPONDING AUTHOR
The Lyell Centre, Heriot-Watt University, Edinburgh, EH14 4AP, UK
Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, USA
Yi Wang
Department of Earth and Environmental Sciences, Tulane University, New Orleans, LA 70118, USA
Stephanie Kusch
Institute of Marine Sciences, University of Quebec Rimouski, Rimouski, QC G5L 3A1, Canada
Katrina Nilsson-Kerr
Department of Earth Sciences, University of Bergen and Bjerknes Centre for Climate Research, Bergen, 5007, Norway
Dalton S. Hardisty
Department of Earth and Environmental Sciences, Michigan State University, East Lansing, MI 48824, USA
Allison Jacobel
Department of Earth and Climate Sciences, Middlebury College, Middlebury, VT 05753, USA
Dharma Reyes Macaya
The Lyell Centre, Heriot-Watt University, Edinburgh, EH14 4AP, UK
Center for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany
Centro de Investigación de Estudios Avanzados del Maule, Universidad Católica del Maule, Campus San Miguel, Talca, 3460000, Chile
Nicolaas Glock
Institute for Geology, Department of Earth System Sciences, University of Hamburg, 20146 Hamburg, Germany
Sha Ni
Institute for Geology, Department of Earth System Sciences, University of Hamburg, 20146 Hamburg, Germany
Julio Sepúlveda
Department of Geological Sciences and Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, CO 80309, USA
Abby Ren
Department of Geosciences, National Taiwan University, Taipei 106, Taiwan
Alexandra Auderset
School of Ocean and Earth Science, University of Southampton, Southampton, SO14 3ZH, UK
Anya V. Hess
Department of Earth and Planetary Sciences, Rutgers, the State University of New Jersey, New Brunswick, NJ 08854, USA
Katrin J. Meissner
Climate Change Research Centre and ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, NSW 2052, Australia
Jorge Cardich
CIDIS - Facultad de Ciencias e Ingeniería, Universidad Peruana Cayetano Heredia, Lima 15102, Peru
Robert Anderson
Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA
Christine Barras
Univ Angers, Nantes Université, Le Mans Univ, CNRS, UMR 6112, Laboratoire de Planétologie et Géosciences, 49000 Angers, France
Chandranath Basak
Department of Earth Sciences, University of Delaware, Newark, DE 19716, USA
Harold J. Bradbury
Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, V6T 1Z4, Canada
Inda Brinkmann
Department of Geology, Lund University, Lund, 223 63, Sweden
Alexis Castillo
Centro de Investigación de Estudios Avanzados del Maule, Universidad Católica del Maule, Campus San Miguel, Talca, 3460000, Chile
Madelyn Cook
Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI 48109, USA
Department of Geosciences, University of Arizona, Tucson, AZ 85721, USA
Kassandra Costa
Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Falmouth, MA 02543, USA
Constance Choquel
Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, USA
The Lyell Centre, Heriot-Watt University, Edinburgh, EH14 4AP, UK
Paula Diz
Centro de Investigación Mariña, XM1, Universidade de Vigo, Vigo, 36310, Spain
Jonas Donnenfield
College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA
Felix J. Elling
Leibniz-Laboratory for Radiometric Dating and Stable Isotope Research, Christian-Albrecht University of Kiel,24118 Kiel, Germany
Zeynep Erdem
Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, 't Horntje (Texel), Den Hoorn, 1797 SZ, the Netherlands
Helena L. Filipsson
Department of Geology, Lund University, Lund, 223 63, Sweden
Sebastián Garrido
The Lyell Centre, Heriot-Watt University, Edinburgh, EH14 4AP, UK
Julia Gottschalk
Institute of Geosciences, University of Kiel, 24118 Kiel, Germany
Anjaly Govindankutty Menon
Institute for Geology, Department of Earth System Sciences, University of Hamburg, 20146 Hamburg, Germany
Jeroen Groeneveld
Institute of Oceanography, National Taiwan University, Taipei 106, Taiwan
Christian Hallmann
GFZ German Research Centre for Geosciences, 14473 Potsdam, Germany
Institute of Geosciences, University of Potsdam, 14476 Potsdam, Germany
Ingrid Hendy
Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI 48109, USA
Rick Hennekam
Department of Ocean Systems, NIOZ Royal Netherlands Institute for Sea Research, Den Burg (Texel), 1790 AB, the Netherlands
Wanyi Lu
State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
Jean Lynch-Stieglitz
School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA
Lélia Matos
Centre of Marine Sciences (CCMAR), University of Algarve, Faro, 8005-139, Portugal
Marine Geology and Georesources Division, Portuguese Institute for Sea and Atmosphere (IPMA), Lisbon, 1495-165, Portugal
Alfredo Martínez-García
Max Planck Institute for Chemistry, 55128 Mainz, Germany
Giulia Molina
Centre of Marine Sciences (CCMAR), University of Algarve, Faro, 8005-139, Portugal
Marine Geology and Georesources Division, Portuguese Institute for Sea and Atmosphere (IPMA), Lisbon, 1495-165, Portugal
Práxedes Muñoz
Departamento de Biología Marina, Universidad Católica del Norte, Coquimbo, 1780000, Chile
Simone Moretti
Max Planck Institute for Chemistry, 55128 Mainz, Germany
Jennifer Morford
Chemistry Department, Franklin and Marshall College, Lancaster, PA 17604, USA
Sophie Nuber
Department of Geosciences, National Taiwan University, Taipei 106, Taiwan
Svetlana Radionovskaya
Department of Earth Sciences, University of Cambridge, Cambridge, CB23EQ, UK
Morgan Reed Raven
Department of Earth Science, University of California, Santa Barbara, CA 93106, USA
Christopher J. Somes
GEOMAR Helmholtz Centre for Ocean Research Kiel, 24148 Kiel, Germany
Anja S. Studer
Department of Environmental Sciences, University of Basel, 4056 Basel, Switzerland
Kazuyo Tachikawa
Aix Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Aix-en-Provence, 13545, France
Raúl Tapia
Institute of Oceanography, National Taiwan University, Taipei 106, Taiwan
Martin Tetard
GNS Science, Lower Hutt, 5011, Aotearoa / New Zealand
Tyler Vollmer
School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA
Xingchen Wang
Department of Earth and Environmental Sciences, Boston College, 1 Fairway Drive, Boston, MA 02467, USA
Shuzhuang Wu
Institute of Earth Sciences, University of Lausanne, 1015 Lausanne, Switzerland
Yan Zhang
Ocean Sciences Department, University of California, Santa Cruz, CA 95064, USA
Xin-Yuan Zheng
Department of Earth and Environmental Sciences, University of Minnesota, Minneapolis, MN 55455, USA
Yuxin Zhou
Department of Earth Science, University of California, Santa Barbara, CA 93106, USA
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This article is included in the Encyclopedia of Geosciences
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This article is included in the Encyclopedia of Geosciences
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This article is included in the Encyclopedia of Geosciences
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This article is included in the Encyclopedia of Geosciences
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We studied past ocean conditions on the Scotian Shelf to understand how warm Gulf Stream waters reached this region in the past. Using chemical signals preserved in microscopic shells from seafloor sediments, we reconstructed sea surface temperature and salinity over the last 8,500 years. We found repeated warm-water intrusions during the mid to late Holocene, similar in strength to those observed today, providing important context for modern ocean warming.
This article is included in the Encyclopedia of Geosciences
Giulia Silveira Molina, Gerhard Schmiedl, Francisco Jiménez-Espejo, Henning Kuhnert, Teresa Rodrigues, and Antje Helga Luise Voelker
J. Micropalaeontol., 45, 117–145, https://doi.org/10.5194/jm-45-117-2026, https://doi.org/10.5194/jm-45-117-2026, 2026
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Benthic foraminifera from sediment cores collected in the Gulf of Cadiz were analysed to track ocean changes between 1014 and 761 kyr ago. Our results reveal shifts in species composition throughout the climate cycles. Oxygen loss occurred in the Mediterranean Outflow Water during warmer periods when solar insolation was intensified and productivity was higher. During cold periods, stronger bottom currents were identified by sand content and the abundance of the species Planulina ariminensis.
This article is included in the Encyclopedia of Geosciences
Sikandar Hayat, Meryem Mojtahid, Mary Elliot, Jorge Cardich, Emmanuelle Geslin, Thibault de Garidel-Thoron, Matthieu Carré, and Christine Barras
J. Micropalaeontol., 45, 95–116, https://doi.org/10.5194/jm-45-95-2026, https://doi.org/10.5194/jm-45-95-2026, 2026
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We studied how artificial intelligence can speed up the study of tiny ocean organisms called benthic foraminifera, whose shells help scientists understand past ocean changes. Normally, identifying and counting them under a microscope takes a lot of time and skill. Here, we compared automated image analysis and human counting for 31 samples. The automated method showed promising results for faster and reliable research.
This article is included in the Encyclopedia of Geosciences
Constance Choquel, Emmanuelle Geslin, Edouard Metzger, Bruno Jesus, Antoine Prins, Emilie Houliez, Magali Schweizer, Thierry Jauffrais, Éric Bénéteau, and Aurélia Mouret
J. Micropalaeontol., 45, 51–72, https://doi.org/10.5194/jm-45-51-2026, https://doi.org/10.5194/jm-45-51-2026, 2026
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We studied how tiny shelled organisms called foraminifera living in coastal mudflats respond to changes in their microscopic algae food. By monitoring a French mudflat every month for 3 years, we showed that seasonal environmental changes strongly shape both algae and foraminifera. Using simple algae traits such as size and shape explained feeding patterns better than identifying algae species, offering a clearer way to predict ecosystem responses to environmental change.
Chia-Te Chien, Markus Pahlow, Christopher J. Somes, Markus Schartau, and Andreas Oschlies
EGUsphere, https://doi.org/10.5194/egusphere-2025-4907, https://doi.org/10.5194/egusphere-2025-4907, 2025
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We aim to investigate the variability and drivers of atmospheric pCO2 drawdown during the Last Glacial Maximum using an ensemble of model simulations. Our ensemble explores the effects of parameter uncertainty and different forcing scenarios on marine biogeochemistry and pCO2. We show that changes in ocean circulation, nutrient utilization, and iron availability regulate the efficiency of the biological carbon pump, accounting for a substantial portion of the glacial–interglacial pCO2 change.
This article is included in the Encyclopedia of Geosciences
Heather M. Stoll, Clara Bolton, Madalina Jaggi, Alfredo Martinez-Garcia, and Stefano M. Bernasconi
Clim. Past, 21, 2189–2203, https://doi.org/10.5194/cp-21-2189-2025, https://doi.org/10.5194/cp-21-2189-2025, 2025
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In periods of high atmospheric CO2 many proxies suggest more extreme past polar warming than is simulated by current coupled climate models. Providing new data on high latitude temperatures in the South Atlantic over the last 15 million years using clumped isotope thermometry, we show that absolute temperatures may not have been as warm as indicated by some biomarker based proxy climate records.
This article is included in the Encyclopedia of Geosciences
Peter K. Bijl, Kasia K. Śliwińska, Bella Duncan, Arnaud Huguet, Sebastian Naeher, Ronnakrit Rattanasriampaipong, Claudia Sosa-Montes de Oca, Alexandra Auderset, Melissa A. Berke, Bum Soo Kim, Nina Davtian, Tom Dunkley Jones, Desmond D. Eefting, Felix J. Elling, Pierrick Fenies, Gordon N. Inglis, Lauren O'Connor, Richard D. Pancost, Francien Peterse, Addison Rice, Appy Sluijs, Devika Varma, Wenjie Xiao, and Yi Ge Zhang
Biogeosciences, 22, 6465–6508, https://doi.org/10.5194/bg-22-6465-2025, https://doi.org/10.5194/bg-22-6465-2025, 2025
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Many academic laboratories worldwide process environmental samples for analysis of membrane lipid molecules of archaea, for the reconstruction of past environmental conditions. However, the sample workup scheme involves many steps, each of which has a risk of contamination or bias, affecting the results. This paper reviews steps involved in sampling, extraction and analysis of lipids, interpretation and archiving of the data. This ensures reproducible, reusable, comparable and consistent data.
This article is included in the Encyclopedia of Geosciences
Joshua Coupe, Nicole S. Lovenduski, Luise S. Gleason, Michael N. Levy, Kristen Krumhardt, Keith Lindsay, Charles Bardeen, Clay Tabor, Cheryl Harrison, Kenneth G. MacLeod, Siddhartha Mitra, and Julio Sepúlveda
Geosci. Model Dev., 18, 8217–8234, https://doi.org/10.5194/gmd-18-8217-2025, https://doi.org/10.5194/gmd-18-8217-2025, 2025
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We have developed a new feature in the atmosphere and ocean components of the Community Earth System Model version 2 by implementing ultraviolet (UV) radiation inhibition of photosynthesis of four marine phytoplankton functional groups represented in the Marine Biogeochemistry Library. The new feature is tested with varying levels of UV radiation, and it will enable an analysis of an asteroid impact’s effect on the ozone layer and how that affects the base of the marine food web.
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Anjaly Govindankutty Menon, Aaron L. Bieler, Hanna Firrincieli, Rachel Alcorn, Niko Lahajnar, Catherine V. Davis, Ralf Schiebel, Dirk Nürnberg, Gerhard Schmiedl, and Nicolaas Glock
Clim. Past, 21, 1853–1869, https://doi.org/10.5194/cp-21-1853-2025, https://doi.org/10.5194/cp-21-1853-2025, 2025
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The pore density (number of pores per unit area) of unicellular eukaryotes is used to reconstruct past bottom-water nitrate at the Sea of Okhotsk, the Gulf of California, the Mexican Margin and the Gulf of Guayaquil. The reconstructed bottom-water nitrate at the Sea of Okhotsk, the Gulf of California and the Gulf of Guayaquil are influenced by the intermediate water masses, while the nitrate at the Mexican Margin is related to the deglacial NO3− variability in the Pacific Deep Water.
This article is included in the Encyclopedia of Geosciences
Emily Havard, Katherine Cherry, Claudia Benitez-Nelson, Eric Tappa, and Catherine V. Davis
Biogeosciences, 22, 4035–4060, https://doi.org/10.5194/bg-22-4035-2025, https://doi.org/10.5194/bg-22-4035-2025, 2025
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This study explores the impact of modern climate change on single-celled, marine organisms in the Santa Barbara Basin called foraminifera. We collect their shells as they sink to the seafloor and compare our record (2014–2021) to previous studies (1993–1998). We find substantial decreases in total foraminifera and warm-water species. Likely influenced by ocean acidification and regional water circulation, these changes have implications for the marine carbon cycle, ecosystem, and fossil record.
This article is included in the Encyclopedia of Geosciences
Zanna Chase, Karen E. Kohfeld, Amy Leventer, David Lund, Xavier Crosta, Laurie Menviel, Helen C. Bostock, Matthew Chadwick, Samuel L. Jaccard, Jacob Jones, Alice Marzocchi, Katrin J. Meissner, Elisabeth Sikes, Louise C. Sime, and Luke Skinner
EGUsphere, https://doi.org/10.5194/egusphere-2025-3504, https://doi.org/10.5194/egusphere-2025-3504, 2025
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The impact of recent dramatic declines in Antarctic sea ice on the Earth system are uncertain. We reviewed how sea ice affects ocean circulation, ice sheets, winds, and the carbon cycle by considering theory and modern observations alongside paleo-proxy reconstructions. We found evidence for connections between sea ice and these systems but also conflicting results, which point to missing knowledge. Our work highlights the complex role of sea ice in the Earth system.
This article is included in the Encyclopedia of Geosciences
Hannah Krüger, Gerhard Schmiedl, Zvi Steiner, Zhouling Zhang, Eric P. Achterberg, and Nicolaas Glock
J. Micropalaeontol., 44, 193–211, https://doi.org/10.5194/jm-44-193-2025, https://doi.org/10.5194/jm-44-193-2025, 2025
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The biodiversity and abundance of benthic foraminifera tend to increase with distance within a transect from the Rainbow hydrothermal vent field. Miliolids dominate closer to the vents and may be better adapted to the potentially hydrothermal conditions than hyaline and agglutinated species. The reason for this remains unclear, but there are indications that elevated trace-metal concentrations in the porewater and intrusion of acidic hydrothermal fluids could have an influence on the foraminifera.
This article is included in the Encyclopedia of Geosciences
Tim B. Stobbe, Henning A. Bauch, Daniel A. Frick, Jimin Yu, and Julia Gottschalk
Clim. Past, 21, 1281–1304, https://doi.org/10.5194/cp-21-1281-2025, https://doi.org/10.5194/cp-21-1281-2025, 2025
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New bottom water reconstructions in the deep Norwegian Sea show higher [CO32-] values in Marine Isotope Stages 5 and 4 than in the Holocene. This suggests modern-like/persistent deep-water formation in this region, even when Atlantic overturning weakened and/or shoaled. Our data put new constraints on the endmember [CO32-] composition of northern component waters emerging from the Nordic Seas, with implications for the chemical characteristics and carbon storage capacity of the Atlantic Ocean.
This article is included in the Encyclopedia of Geosciences
Samantha Siedlecki, Stanley Nmor, Gennadi Lessin, Kelly Kearney, Subhadeep Rakshit, Colleen Petrik, Jessica Luo, Cristina Schultz, Dalton Sasaki, Kayla Gillen, Anh Pham, Christopher Somes, Damian Brady, Jeremy Testa, Christophe Rabouille, Isa Elegbede, and Olivier Sulpis
EGUsphere, https://doi.org/10.5194/egusphere-2025-1846, https://doi.org/10.5194/egusphere-2025-1846, 2025
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Benthic biogeochemical models are essential for simulating seafloor carbon cycling and climate feedbacks, yet vary widely in structure and assumptions. This paper introduces SedBGC_MIP, a community initiative to compare existing models, refine key processes, and assess uncertainty. We highlight discrepancies through case studies and introduce needs including observational benchmarks. Ultimately, we seek to improve climate and resource projections.
This article is included in the Encyclopedia of Geosciences
Lutz Schirrmeister, Margret C. Fuchs, Thomas Opel, Andrei Andreev, Frank Kienast, Andrea Schneider, Larisa Nazarova, Larisa Frolova, Svetlana Kuzmina, Tatiana Kuznetsova, Vladimir Tumskoy, Heidrun Matthes, Gerrit Lohmann, Guido Grosse, Viktor Kunitsky, Hanno Meyer, Heike H. Zimmermann, Ulrike Herzschuh, Thomas Böhmer, Stuart Umbo, Sevi Modestou, Sebastian F. M. Breitenbach, Anfisa Pismeniuk, Georg Schwamborn, Stephanie Kusch, and Sebastian Wetterich
Clim. Past, 21, 1143–1184, https://doi.org/10.5194/cp-21-1143-2025, https://doi.org/10.5194/cp-21-1143-2025, 2025
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Geochronological, cryolithological, paleoecological, and modeling data reconstruct the Last Interglacial (LIG) climate around the New Siberian Islands and reveal significantly warmer conditions compared to today. The critical challenges in predicting future ecosystem responses lie in the fact that the land–ocean distribution during the LIG was markedly different from today, affecting the degree of continentality, which played a major role in modulating climate and ecosystem dynamics.
This article is included in the Encyclopedia of Geosciences
Bartholomé Duboc, Katrin J. Meissner, Laurie Menviel, Nicholas K. H. Yeung, Babette Hoogakker, Tilo Ziehn, and Matthew Chamberlain
Clim. Past, 21, 1093–1122, https://doi.org/10.5194/cp-21-1093-2025, https://doi.org/10.5194/cp-21-1093-2025, 2025
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We use an earth system model to simulate ocean oxygen during two past warm periods, the Last Interglacial (∼ 129–115 ka) and Marine Isotope Stage (MIS) 9e (∼ 336–321 ka). The global ocean is overall less oxygenated compared to the preindustrial simulation. Large regions in the Mediterranean Sea are oxygen deprived in the Last Interglacial simulation, and to a lesser extent in the MIS 9e simulation, due to an intensification and expansion of the African monsoon and enhanced river runoff.
This article is included in the Encyclopedia of Geosciences
Anna Cutmore, Nicole Bale, Rick Hennekam, Bingjie Yang, Darci Rush, Gert-Jan Reichart, Ellen C. Hopmans, and Stefan Schouten
Clim. Past, 21, 957–971, https://doi.org/10.5194/cp-21-957-2025, https://doi.org/10.5194/cp-21-957-2025, 2025
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As human activities lower marine oxygen levels, understanding the impact on the marine nitrogen cycle is vital. The Black Sea, which became oxygen-deprived 9600 years ago, offers key insights. By studying organic compounds linked to nitrogen cycle processes, we found that, 7200 years ago, the Black Sea's nitrogen cycle significantly altered due to severe deoxygenation. This suggests that continued marine oxygen decline could similarly alter the marine nitrogen cycle, affecting vital ecosystems.
This article is included in the Encyclopedia of Geosciences
Lukas Jonkers, Tonke Strack, Montserrat Alonso-Garcia, Simon D'haenens, Robert Huber, Michal Kucera, Iván Hernández-Almeida, Chloe L. C. Jones, Brett Metcalfe, Rajeev Saraswat, Lóránd Silye, Sanjay K. Verma, Muhamad Naim Abd Malek, Gerald Auer, Cátia F. Barbosa, Maria A. Barcena, Karl-Heinz Baumann, Flavia Boscolo-Galazzo, Joeven Austine S. Calvelo, Lucilla Capotondi, Martina Caratelli, Jorge Cardich, Humberto Carvajal-Chitty, Markéta Chroustová, Helen K. Coxall, Renata M. de Mello, Anne de Vernal, Paula Diz, Kirsty M. Edgar, Helena L. Filipsson, Ángela Fraguas, Heather L. Furlong, Giacomo Galli, Natalia L. García Chapori, Robyn Granger, Jeroen Groeneveld, Adil Imam, Rebecca Jackson, David Lazarus, Julie Meilland, Marína Molčan Matejová, Raphael Morard, Caterina Morigi, Sven N. Nielsen, Diana Ochoa, Maria Rose Petrizzo, Andrés S. Rigual-Hernández, Marina C. Rillo, Matthew L. Staitis, Gamze Tanık, Raúl Tapia, Nishant Vats, Bridget S. Wade, and Anna E. Weinmann
J. Micropalaeontol., 44, 145–168, https://doi.org/10.5194/jm-44-145-2025, https://doi.org/10.5194/jm-44-145-2025, 2025
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Our study provides guidelines improving the reuse of marine microfossil assemblage data, which are valuable for understanding past ecosystems and environmental change. Based on a survey of 113 researchers, we identified key data attributes required for effective reuse. Analysis of a selection of datasets available online reveals a gap between the attributes scientists consider essential and the data currently available, highlighting the need for clearer data documentation and sharing practices.
This article is included in the Encyclopedia of Geosciences
Alexandra Auderset, Sandi M. Smart, Yeongjun Ryu, Dario Marconi, Haojia Abby Ren, Lena Heins, Hubert Vonhof, Ralf Schiebel, Janne Repschläger, Daniel M. Sigman, Gerald H. Haug, and Alfredo Martínez-García
Biogeosciences, 22, 1887–1905, https://doi.org/10.5194/bg-22-1887-2025, https://doi.org/10.5194/bg-22-1887-2025, 2025
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This study uses foraminifera-bound nitrogen isotopes (FB-δ15N) to investigate photosymbiosis in planktic foraminifera. The analysis of South Atlantic shells, compared to a global dataset, shows that FB-δ15N distinguishes species with certain algal symbionts (dinoflagellates), likely due to internal ammonium recycling. However, the studied site stands out with its larger-than-expected FB-δ15N offsets, highlighting influences on FB-δ15N signatures in regions with strong environmental gradients.
This article is included in the Encyclopedia of Geosciences
Allison W. Jacobel, Kassandra M. Costa, Lily M. Applebaum, and Serena Conde
Geochronology, 7, 123–138, https://doi.org/10.5194/gchron-7-123-2025, https://doi.org/10.5194/gchron-7-123-2025, 2025
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The equatorial Pacific is an important region that helps determine Earth's climate. This work presents new age models for two sediment core sites located in that region, spanning the last 280 kyr. Our age models are based on new radiocarbon dates and oxygen isotope measurements. We also use the oxygen isotope data to infer changes in sea surface salinity patterns, finding evidence for a change in the position of the Intertropical Convergence Zone (ITCZ) on glacial and interglacial timescales.
This article is included in the Encyclopedia of Geosciences
Szabina Karancz, Lennart J. de Nooijer, Bas van der Wagt, Marcel T. J. van der Meer, Sambuddha Misra, Rick Hennekam, Zeynep Erdem, Julie Lattaud, Negar Haghipour, Stefan Schouten, and Gert-Jan Reichart
Clim. Past, 21, 679–704, https://doi.org/10.5194/cp-21-679-2025, https://doi.org/10.5194/cp-21-679-2025, 2025
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Changes in upwelling intensity of the Benguela upwelling region during the last glacial motivated us to investigate the local CO2 history during the last glacial-to-interglacial transition. Using various geochemical tracers on archives from both subsurface and surface waters reveals enhanced storage of carbon at depth during the Last Glacial Maximum. An efficient biological pump likely prevented outgassing of CO2 from intermediate depth to the atmosphere.
This article is included in the Encyclopedia of Geosciences
Keyi Cheng, Andy Ridgwell, and Dalton S. Hardisty
Biogeosciences, 21, 4927–4949, https://doi.org/10.5194/bg-21-4927-2024, https://doi.org/10.5194/bg-21-4927-2024, 2024
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The carbonate paleoredox proxy, I / Ca, has shown its potential to quantify the redox change in the past ocean, which is of broad importance for understanding climate change and evolution. Here, we tuned and optimized the marine iodine cycling embedded in an Earth system model, “cGENIE”, against modern ocean observations and then tested its ability to estimate I / Ca in the Cretaceous ocean. Our study implies cGENIE’s potential to quantify redox change in the past using the I / Ca proxy.
This article is included in the Encyclopedia of Geosciences
Na Li, Christopher J. Somes, Angela Landolfi, Chia-Te Chien, Markus Pahlow, and Andreas Oschlies
Biogeosciences, 21, 4361–4380, https://doi.org/10.5194/bg-21-4361-2024, https://doi.org/10.5194/bg-21-4361-2024, 2024
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N is a crucial nutrient that limits phytoplankton growth in large ocean areas. The amount of oceanic N is governed by the balance of N2 fixation and denitrification. Here we incorporate benthic denitrification into an Earth system model with variable particulate stoichiometry. Our model compares better to the observed surface nutrient distributions, marine N2 fixation, and primary production. Benthic denitrification plays an important role in marine N and C cycling and hence the global climate.
This article is included in the Encyclopedia of Geosciences
David J. Harning, Jonathan H. Raberg, Jamie M. McFarlin, Yarrow Axford, Christopher R. Florian, Kristín B. Ólafsdóttir, Sebastian Kopf, Julio Sepúlveda, Gifford H. Miller, and Áslaug Geirsdóttir
Hydrol. Earth Syst. Sci., 28, 4275–4293, https://doi.org/10.5194/hess-28-4275-2024, https://doi.org/10.5194/hess-28-4275-2024, 2024
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As human-induced global warming progresses, changes to Arctic precipitation are expected, but predictions are limited by an incomplete understanding of past changes in the hydrological system. Here, we measured water isotopes, a common tool to reconstruct past precipitation, from lakes, streams, and soils across Iceland. These data will allow robust reconstruction of past precipitation changes in Iceland in future studies.
This article is included in the Encyclopedia of Geosciences
Mohamed Ayache, Jean-Claude Dutay, Anne Mouchet, Kazuyo Tachikawa, Camille Risi, and Gilles Ramstein
Geosci. Model Dev., 17, 6627–6655, https://doi.org/10.5194/gmd-17-6627-2024, https://doi.org/10.5194/gmd-17-6627-2024, 2024
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Water isotopes (δ18O, δD) are one of the most widely used proxies in ocean climate research. Previous studies using water isotope observations and modelling have highlighted the importance of understanding spatial and temporal isotopic variability for a quantitative interpretation of these tracers. Here we present the first results of a high-resolution regional dynamical model (at 1/12° horizontal resolution) developed for the Mediterranean Sea, one of the hotspots of ongoing climate change.
This article is included in the Encyclopedia of Geosciences
Sebastian I. Cantarero, Edgart Flores, Harry Allbrook, Paulina Aguayo, Cristian A. Vargas, John E. Tamanaha, J. Bentley C. Scholz, Lennart T. Bach, Carolin R. Löscher, Ulf Riebesell, Balaji Rajagopalan, Nadia Dildar, and Julio Sepúlveda
Biogeosciences, 21, 3927–3958, https://doi.org/10.5194/bg-21-3927-2024, https://doi.org/10.5194/bg-21-3927-2024, 2024
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Our study explores lipid remodeling in response to environmental stress, specifically how cell membrane chemistry changes. We focus on intact polar lipids in a phytoplankton community exposed to diverse stressors in a mesocosm experiment. The observed remodeling indicates acyl chain recycling for energy storage in intact polar lipids during stress, reallocating resources based on varying growth conditions. This understanding is essential to grasp the system's impact on cellular pools.
This article is included in the Encyclopedia of Geosciences
Nicolò Ardenghi, David J. Harning, Jonathan H. Raberg, Brooke R. Holman, Thorvaldur Thordarson, Áslaug Geirsdóttir, Gifford H. Miller, and Julio Sepúlveda
Clim. Past, 20, 1087–1123, https://doi.org/10.5194/cp-20-1087-2024, https://doi.org/10.5194/cp-20-1087-2024, 2024
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Analysing a sediment record from Stóra Viðarvatn (NE Iceland), we reveal how natural factors and human activities influenced environmental changes (erosion, wildfires) over the last 11 000 years. We found increased fire activity around 3000 and 1500 years ago, predating human settlement, likely driven by natural factors like precipitation shifts. Declining summer temperatures increased erosion vulnerability, exacerbated by farming and animal husbandry, which in turn may have reduced wildfires.
This article is included in the Encyclopedia of Geosciences
Jennifer L. Middleton, Julia Gottschalk, Gisela Winckler, Jean Hanley, Carol Knudson, Jesse R. Farmer, Frank Lamy, Lorraine E. Lisiecki, and Expedition 383 Scientists
Geochronology, 6, 125–145, https://doi.org/10.5194/gchron-6-125-2024, https://doi.org/10.5194/gchron-6-125-2024, 2024
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We present oxygen isotope data for a new sediment core from the South Pacific and assign ages to our record by aligning distinct patterns in observed oxygen isotope changes to independently dated target records with the same patterns. We examine the age uncertainties associated with this approach caused by human vs. automated alignment and the sensitivity of outcomes to the choice of alignment target. These efforts help us understand the timing of past climate changes.
This article is included in the Encyclopedia of Geosciences
Paul D. Zander, Daniel Böhl, Frank Sirocko, Alexandra Auderset, Gerald H. Haug, and Alfredo Martínez-García
Clim. Past, 20, 841–864, https://doi.org/10.5194/cp-20-841-2024, https://doi.org/10.5194/cp-20-841-2024, 2024
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Bacterial lipids (branched glycerol dialkyl glycerol tetraethers; brGDGTs) extracted from lake sediments were used to reconstruct warm-season temperatures in central Europe during the past 60 kyr. Modern samples were used to test and correct for bias related to varying sources of brGDGTs. The temperature reconstruction is significantly correlated with other temperature reconstructions but features less millennial-scale variability, which is attributed to the seasonal signal of the proxy.
This article is included in the Encyclopedia of Geosciences
Zoë Rebecca van Kemenade, Zeynep Erdem, Ellen Christine Hopmans, Jaap Smede Sinninghe Damsté, and Darci Rush
Biogeosciences, 21, 1517–1532, https://doi.org/10.5194/bg-21-1517-2024, https://doi.org/10.5194/bg-21-1517-2024, 2024
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The California Current system (CCS) hosts the eastern subtropical North Pacific oxygen minimum zone (ESTNP OMZ). This study shows anaerobic ammonium oxidizing (anammox) bacteria cause a loss of bioavailable nitrogen (N) in the ESTNP OMZ throughout the late Quaternary. Anammox occurred during both glacial and interglacial periods and was driven by the supply of organic matter and changes in ocean currents. These findings may have important consequences for biogeochemical models of the CCS.
This article is included in the Encyclopedia of Geosciences
K. Mareike Paul, Martijn Hermans, Sami A. Jokinen, Inda Brinkmann, Helena L. Filipsson, and Tom Jilbert
Biogeosciences, 20, 5003–5028, https://doi.org/10.5194/bg-20-5003-2023, https://doi.org/10.5194/bg-20-5003-2023, 2023
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Seawater naturally contains trace metals such as Mo and U, which accumulate under low oxygen conditions on the seafloor. Previous studies have used sediment Mo and U contents as an archive of changing oxygen concentrations in coastal waters. Here we show that in fjords the use of Mo and U for this purpose may be impaired by additional processes. Our findings have implications for the reliable use of Mo and U to reconstruct oxygen changes in fjords.
This article is included in the Encyclopedia of Geosciences
Angus Fotherby, Harold J. Bradbury, Jennifer L. Druhan, and Alexandra V. Turchyn
Geosci. Model Dev., 16, 7059–7074, https://doi.org/10.5194/gmd-16-7059-2023, https://doi.org/10.5194/gmd-16-7059-2023, 2023
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We demonstrate how, given a simulation of fluid and rock interacting, we can emulate the system using machine learning. This means that, for a given initial condition, we can predict the final state, avoiding the simulation step once the model has been trained. We present a workflow for applying this approach to any fluid–rock simulation and showcase two applications to different fluid–rock simulations. This approach has applications for improving model development and sensitivity analyses.
This article is included in the Encyclopedia of Geosciences
Maria-Theresia Pelz, Markus Schartau, Christopher J. Somes, Vanessa Lampe, and Thomas Slawig
Geosci. Model Dev., 16, 6609–6634, https://doi.org/10.5194/gmd-16-6609-2023, https://doi.org/10.5194/gmd-16-6609-2023, 2023
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Kernel density estimators (KDE) approximate the probability density of a data set without the assumption of an underlying distribution. We used the solution of the diffusion equation, and a new approximation of the optimal smoothing parameter build on two pilot estimation steps, to construct such a KDE best suited for typical characteristics of geoscientific data. The resulting KDE is insensitive to noise and well resolves multimodal data structures as well as boundary-close data.
This article is included in the Encyclopedia of Geosciences
Joachim Schönfeld, Nicolaas Glock, Irina Polovodova Asteman, Alexandra-Sophie Roy, Marié Warren, Julia Weissenbach, and Julia Wukovits
J. Micropalaeontol., 42, 171–192, https://doi.org/10.5194/jm-42-171-2023, https://doi.org/10.5194/jm-42-171-2023, 2023
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Benthic organisms show aggregated distributions due to the spatial heterogeneity of niches or food. We analysed the distribution of Globobulimina turgida in the Gullmar Fjord, Sweden, with a data–model approach. The population densities did not show any underlying spatial structure but a random log-normal distribution. A temporal data series from the same site depicted two cohorts of samples with high or low densities, which represent hypoxic or well-ventilated conditions in the fjord.
This article is included in the Encyclopedia of Geosciences
Christoph Heinze, Thorsten Blenckner, Peter Brown, Friederike Fröb, Anne Morée, Adrian L. New, Cara Nissen, Stefanie Rynders, Isabel Seguro, Yevgeny Aksenov, Yuri Artioli, Timothée Bourgeois, Friedrich Burger, Jonathan Buzan, B. B. Cael, Veli Çağlar Yumruktepe, Melissa Chierici, Christopher Danek, Ulf Dieckmann, Agneta Fransson, Thomas Frölicher, Giovanni Galli, Marion Gehlen, Aridane G. González, Melchor Gonzalez-Davila, Nicolas Gruber, Örjan Gustafsson, Judith Hauck, Mikko Heino, Stephanie Henson, Jenny Hieronymus, I. Emma Huertas, Fatma Jebri, Aurich Jeltsch-Thömmes, Fortunat Joos, Jaideep Joshi, Stephen Kelly, Nandini Menon, Precious Mongwe, Laurent Oziel, Sólveig Ólafsdottir, Julien Palmieri, Fiz F. Pérez, Rajamohanan Pillai Ranith, Juliano Ramanantsoa, Tilla Roy, Dagmara Rusiecka, J. Magdalena Santana Casiano, Yeray Santana-Falcón, Jörg Schwinger, Roland Séférian, Miriam Seifert, Anna Shchiptsova, Bablu Sinha, Christopher Somes, Reiner Steinfeldt, Dandan Tao, Jerry Tjiputra, Adam Ulfsbo, Christoph Völker, Tsuyoshi Wakamatsu, and Ying Ye
Biogeosciences Discuss., https://doi.org/10.5194/bg-2023-182, https://doi.org/10.5194/bg-2023-182, 2023
Revised manuscript not accepted
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For assessing the consequences of human-induced climate change for the marine realm, it is necessary to not only look at gradual changes but also at abrupt changes of environmental conditions. We summarise abrupt changes in ocean warming, acidification, and oxygen concentration as the key environmental factors for ecosystems. Taking these abrupt changes into account requires greenhouse gas emissions to be reduced to a larger extent than previously thought to limit respective damage.
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Nicolaas Glock
Biogeosciences, 20, 3423–3447, https://doi.org/10.5194/bg-20-3423-2023, https://doi.org/10.5194/bg-20-3423-2023, 2023
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Ocean deoxygenation due to climate warming is an evolving threat for organisms that are not well adapted to O2 depletion, such as many pelagic fish species. Other better-adapted organisms, such as some benthic foraminifera species, might benefit from ocean deoxygenation. Benthic foraminifera are a group of marine protists and can have specific adaptations to O2 depletion such as the ability to respire nitrate instead of O2. This paper reviews the current state of knowledge about these organisms.
This article is included in the Encyclopedia of Geosciences
Himadri Saini, Katrin J. Meissner, Laurie Menviel, and Karin Kvale
Clim. Past, 19, 1559–1584, https://doi.org/10.5194/cp-19-1559-2023, https://doi.org/10.5194/cp-19-1559-2023, 2023
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Understanding the changes in atmospheric CO2 during the last glacial cycle is crucial to comprehend the impact of climate change in the future. Previous research has hypothesised a key role of greater aeolian iron input into the Southern Ocean in influencing the global atmospheric CO2 levels by impacting the changes in the marine phytoplankton response. In our study, we test this iron hypothesis using climate modelling and constrain the impact of ocean iron supply on global CO2 decrease.
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Suzanne Robinson, Ruza F. Ivanovic, Lauren J. Gregoire, Julia Tindall, Tina van de Flierdt, Yves Plancherel, Frerk Pöppelmeier, Kazuyo Tachikawa, and Paul J. Valdes
Geosci. Model Dev., 16, 1231–1264, https://doi.org/10.5194/gmd-16-1231-2023, https://doi.org/10.5194/gmd-16-1231-2023, 2023
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We present the implementation of neodymium (Nd) isotopes into the ocean model of FAMOUS (Nd v1.0). Nd fluxes from seafloor sediment and incorporation of Nd onto sinking particles represent the major global sources and sinks, respectively. However, model–data mismatch in the North Pacific and northern North Atlantic suggest that certain reactive components of the sediment interact the most with seawater. Our results are important for interpreting Nd isotopes in terms of ocean circulation.
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Paula Diz, Víctor González-Guitián, Rita González-Villanueva, Aida Ovejero, and Iván Hernández-Almeida
Earth Syst. Sci. Data, 15, 697–722, https://doi.org/10.5194/essd-15-697-2023, https://doi.org/10.5194/essd-15-697-2023, 2023
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Benthic foraminifera are key components of the ocean benthos and marine sediments. Determining their geographic distribution is highly relevant for improving our understanding of the recent and past ocean benthic ecosystem and establishing adequate conservation strategies. Here, we contribute to this knowledge by generating an open-access database of previously documented quantitative data of benthic foraminifera species from surface sediments of the eastern Pacific (BENFEP).
This article is included in the Encyclopedia of Geosciences
David J. Harning, Brooke Holman, Lineke Woelders, Anne E. Jennings, and Julio Sepúlveda
Biogeosciences, 20, 229–249, https://doi.org/10.5194/bg-20-229-2023, https://doi.org/10.5194/bg-20-229-2023, 2023
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In order to better reconstruct the geologic history of the North Water Polynya, we provide modern validations and calibrations of lipid biomarker proxies in Baffin Bay. We find that sterols, rather than HBIs, most accurately capture the current extent of the North Water Polynya and will be a valuable tool to reconstruct its past presence or absence. Our local temperature calibrations for GDGTs and OH-GDGTs reduce the uncertainty present in global temperature calibrations.
This article is included in the Encyclopedia of Geosciences
Mohamed Ayache, Jean-Claude Dutay, Kazuyo Tachikawa, Thomas Arsouze, and Catherine Jeandel
Biogeosciences, 20, 205–227, https://doi.org/10.5194/bg-20-205-2023, https://doi.org/10.5194/bg-20-205-2023, 2023
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The neodymium (Nd) is one of the most useful tracers to fingerprint water mass provenance. However, the use of Nd is hampered by the lack of adequate quantification of the external sources. Here, we present the first simulation of dissolved Nd concentration and Nd isotopic composition in the Mediterranean Sea using a high-resolution model. We aim to better understand how the various external sources affect the Nd cycle and particularly assess how it is impacted by atmospheric inputs.
This article is included in the Encyclopedia of Geosciences
Rick Hennekam, Katharine M. Grant, Eelco J. Rohling, Rik Tjallingii, David Heslop, Andrew P. Roberts, Lucas J. Lourens, and Gert-Jan Reichart
Clim. Past, 18, 2509–2521, https://doi.org/10.5194/cp-18-2509-2022, https://doi.org/10.5194/cp-18-2509-2022, 2022
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The ratio of titanium to aluminum (Ti/Al) is an established way to reconstruct North African climate in eastern Mediterranean Sea sediments. We demonstrate here how to obtain reliable Ti/Al data using an efficient scanning method that allows rapid acquisition of long climate records at low expense. Using this method, we reconstruct a 3-million-year North African climate record. African environmental variability was paced predominantly by low-latitude insolation from 3–1.2 million years ago.
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Ting-Yu Chen, Chia-Li Chen, Yi-Chi Chen, Charles C.-K. Chou, Haojia Ren, and Hui-Ming Hung
Atmos. Chem. Phys., 22, 13001–13012, https://doi.org/10.5194/acp-22-13001-2022, https://doi.org/10.5194/acp-22-13001-2022, 2022
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The anthropogenic influence on aerosol composition in a downstream river-valley forest was investigated using FTIR and isotope analysis. A higher N-containing species concentration during daytime fog events indicates that a stronger inversion leads to higher pollutant concentrations, and the fog enhances the aqueous-phase chemical processes. Moreover, the observed size-dependent oxygen isotope suggests the contribution of organic peroxyl radicals to local nitrate formation for small particles.
This article is included in the Encyclopedia of Geosciences
Suzanne Robinson, Ruza Ivanovic, Lauren Gregoire, Lachlan Astfalck, Tina van de Flierdt, Yves Plancherel, Frerk Pöppelmeier, and Kazuyo Tachikawa
EGUsphere, https://doi.org/10.5194/egusphere-2022-937, https://doi.org/10.5194/egusphere-2022-937, 2022
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The neodymium (Nd) isotope (εNd) scheme in the ocean model of FAMOUS is used to explore a benthic Nd flux to seawater. Our results demonstrate that sluggish modern Pacific waters are sensitive to benthic flux alterations, whereas the well-ventilated North Atlantic displays a much weaker response. In closing, there are distinct regional differences in how seawater acquires its εNd signal, in part relating to the complex interactions of Nd addition and water advection.
This article is included in the Encyclopedia of Geosciences
Xavier Crosta, Karen E. Kohfeld, Helen C. Bostock, Matthew Chadwick, Alice Du Vivier, Oliver Esper, Johan Etourneau, Jacob Jones, Amy Leventer, Juliane Müller, Rachael H. Rhodes, Claire S. Allen, Pooja Ghadi, Nele Lamping, Carina B. Lange, Kelly-Anne Lawler, David Lund, Alice Marzocchi, Katrin J. Meissner, Laurie Menviel, Abhilash Nair, Molly Patterson, Jennifer Pike, Joseph G. Prebble, Christina Riesselman, Henrik Sadatzki, Louise C. Sime, Sunil K. Shukla, Lena Thöle, Maria-Elena Vorrath, Wenshen Xiao, and Jiao Yang
Clim. Past, 18, 1729–1756, https://doi.org/10.5194/cp-18-1729-2022, https://doi.org/10.5194/cp-18-1729-2022, 2022
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Despite its importance in the global climate, our knowledge of Antarctic sea-ice changes throughout the last glacial–interglacial cycle is extremely limited. As part of the Cycles of Sea Ice Dynamics in the Earth system (C-SIDE) Working Group, we review marine- and ice-core-based sea-ice proxies to provide insights into their applicability and limitations. By compiling published records, we provide information on Antarctic sea-ice dynamics over the past 130 000 years.
This article is included in the Encyclopedia of Geosciences
Raúl Tapia, Sze Ling Ho, Hui-Yu Wang, Jeroen Groeneveld, and Mahyar Mohtadi
Biogeosciences, 19, 3185–3208, https://doi.org/10.5194/bg-19-3185-2022, https://doi.org/10.5194/bg-19-3185-2022, 2022
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We report census counts of planktic foraminifera in depth-stratified plankton net samples off Indonesia. Our results show that the vertical distribution of foraminifera species routinely used in paleoceanographic reconstructions varies in hydrographically distinct regions, likely in response to food availability. Consequently, the thermal gradient based on mixed layer and thermocline dwellers also differs for these regions, suggesting potential implications for paleoceanographic reconstructions.
This article is included in the Encyclopedia of Geosciences
Stefan Mulitza, Torsten Bickert, Helen C. Bostock, Cristiano M. Chiessi, Barbara Donner, Aline Govin, Naomi Harada, Enqing Huang, Heather Johnstone, Henning Kuhnert, Michael Langner, Frank Lamy, Lester Lembke-Jene, Lorraine Lisiecki, Jean Lynch-Stieglitz, Lars Max, Mahyar Mohtadi, Gesine Mollenhauer, Juan Muglia, Dirk Nürnberg, André Paul, Carsten Rühlemann, Janne Repschläger, Rajeev Saraswat, Andreas Schmittner, Elisabeth L. Sikes, Robert F. Spielhagen, and Ralf Tiedemann
Earth Syst. Sci. Data, 14, 2553–2611, https://doi.org/10.5194/essd-14-2553-2022, https://doi.org/10.5194/essd-14-2553-2022, 2022
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Stable isotope ratios of foraminiferal shells from deep-sea sediments preserve key information on the variability of ocean circulation and ice volume. We present the first global atlas of harmonized raw downcore oxygen and carbon isotope ratios of various planktonic and benthic foraminiferal species. The atlas is a foundation for the analyses of the history of Earth system components, for finding future coring sites, and for teaching marine stratigraphy and paleoceanography.
This article is included in the Encyclopedia of Geosciences
Inda Brinkmann, Christine Barras, Tom Jilbert, Tomas Næraa, K. Mareike Paul, Magali Schweizer, and Helena L. Filipsson
Biogeosciences, 19, 2523–2535, https://doi.org/10.5194/bg-19-2523-2022, https://doi.org/10.5194/bg-19-2523-2022, 2022
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The concentration of the trace metal barium (Ba) in coastal seawater is a function of continental input, such as riverine discharge. Our geochemical records of the severely hot and dry year 2018, and following wet year 2019, reveal that prolonged drought imprints with exceptionally low Ba concentrations in benthic foraminiferal calcium carbonates of coastal sediments. This highlights the potential of benthic Ba / Ca to trace past climate extremes and variability in coastal marine records.
This article is included in the Encyclopedia of Geosciences
Ryan A. Green, Laurie Menviel, Katrin J. Meissner, Xavier Crosta, Deepak Chandan, Gerrit Lohmann, W. Richard Peltier, Xiaoxu Shi, and Jiang Zhu
Clim. Past, 18, 845–862, https://doi.org/10.5194/cp-18-845-2022, https://doi.org/10.5194/cp-18-845-2022, 2022
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Climate models are used to predict future climate changes and as such, it is important to assess their performance in simulating past climate changes. We analyze seasonal sea-ice cover over the Southern Ocean simulated from numerical PMIP3, PMIP4 and LOVECLIM simulations during the Last Glacial Maximum (LGM). Comparing these simulations to proxy data, we provide improved estimates of LGM seasonal sea-ice cover. Our estimate of summer sea-ice extent is 20 %–30 % larger than previous estimates.
This article is included in the Encyclopedia of Geosciences
Clara T. Bolton, Emmeline Gray, Wolfgang Kuhnt, Ann E. Holbourn, Julia Lübbers, Katharine Grant, Kazuyo Tachikawa, Gianluca Marino, Eelco J. Rohling, Anta-Clarisse Sarr, and Nils Andersen
Clim. Past, 18, 713–738, https://doi.org/10.5194/cp-18-713-2022, https://doi.org/10.5194/cp-18-713-2022, 2022
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The timing of the initiation and evolution of the South Asian monsoon in the geological past is a subject of debate. Here, we present a new age model spanning the late Miocene (9 to 5 million years ago) and high-resolution records of past open-ocean biological productivity from the equatorial Indian Ocean that we interpret to reflect monsoon wind strength. Our data show no long-term intensification; however, strong orbital periodicities suggest insolation forcing of monsoon wind strength.
This article is included in the Encyclopedia of Geosciences
Dipayan Choudhury, Laurie Menviel, Katrin J. Meissner, Nicholas K. H. Yeung, Matthew Chamberlain, and Tilo Ziehn
Clim. Past, 18, 507–523, https://doi.org/10.5194/cp-18-507-2022, https://doi.org/10.5194/cp-18-507-2022, 2022
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We investigate the effects of a warmer climate from the Earth's paleoclimate (last interglacial) on the marine carbon cycle of the Southern Ocean using a carbon-cycle-enabled state-of-the-art climate model. We find a 150 % increase in CO2 outgassing during this period, which results from competition between higher sea surface temperatures and weaker oceanic circulation. From this we unequivocally infer that the carbon uptake by the Southern Ocean will reduce under a future warming scenario.
This article is included in the Encyclopedia of Geosciences
Edgart Flores, Sebastian I. Cantarero, Paula Ruiz-Fernández, Nadia Dildar, Matthias Zabel, Osvaldo Ulloa, and Julio Sepúlveda
Biogeosciences, 19, 1395–1420, https://doi.org/10.5194/bg-19-1395-2022, https://doi.org/10.5194/bg-19-1395-2022, 2022
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In this study, we investigate the chemical diversity and abundance of microbial lipids as markers of organic matter sources in the deepest points of the Atacama Trench sediments and compare them to similar lipid stocks in shallower surface sediments and in the overlying water column. We evaluate possible organic matter provenance and some potential chemical adaptations of the in situ microbial community to the extreme conditions of high hydrostatic pressure in hadal realm.
This article is included in the Encyclopedia of Geosciences
Lukas Jonkers, Geert-Jan A. Brummer, Julie Meilland, Jeroen Groeneveld, and Michal Kucera
Clim. Past, 18, 89–101, https://doi.org/10.5194/cp-18-89-2022, https://doi.org/10.5194/cp-18-89-2022, 2022
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The variability in the geochemistry among individual foraminifera is used to reconstruct seasonal to interannual climate variability. This method requires that each foraminifera shell accurately records environmental conditions, which we test here using a sediment trap time series. Even in the absence of environmental variability, planktonic foraminifera display variability in their stable isotope ratios that needs to be considered in the interpretation of individual foraminifera data.
This article is included in the Encyclopedia of Geosciences
Karin Kvale, David P. Keller, Wolfgang Koeve, Katrin J. Meissner, Christopher J. Somes, Wanxuan Yao, and Andreas Oschlies
Geosci. Model Dev., 14, 7255–7285, https://doi.org/10.5194/gmd-14-7255-2021, https://doi.org/10.5194/gmd-14-7255-2021, 2021
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We present a new model of biological marine silicate cycling for the University of Victoria Earth System Climate Model (UVic ESCM). This new model adds diatoms, which are a key aspect of the biological carbon pump, to an existing ecosystem model. Our modifications change how the model responds to warming, with net primary production declining more strongly than in previous versions. Diatoms in particular are simulated to decline with climate warming due to their high nutrient requirements.
This article is included in the Encyclopedia of Geosciences
Maria-Theresia Verwega, Christopher J. Somes, Markus Schartau, Robyn Elizabeth Tuerena, Anne Lorrain, Andreas Oschlies, and Thomas Slawig
Earth Syst. Sci. Data, 13, 4861–4880, https://doi.org/10.5194/essd-13-4861-2021, https://doi.org/10.5194/essd-13-4861-2021, 2021
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This work describes a ready-to-use collection of particulate organic carbon stable isotope ratio data sets. It covers the 1960s–2010s and all main oceans, providing meta-information and gridded data. The best coverage exists in Atlantic, Indian and Southern Ocean surface waters during the 1990s. It indicates no major difference between methods and shows decreasing values towards high latitudes, with the lowest in the Southern Ocean, and a long-term decline in all regions but the Southern Ocean.
This article is included in the Encyclopedia of Geosciences
Cited articles
Abken, H. J., Tietze, M., Brodersen, J., Bäumer, S., Beifuss, U., and Deppenmeier, U.: Isolation and characterization of methanophenazine and function of phenazines in membrane-bound electron transport of Methanosarcina mazei Gö1, J Bacteriol, 180, 2027–2032, https://doi.org/10.1128/jb.180.8.2027-2032, 1998.
Adam, P., Schneckenburger, P., Schaeffer, P., and Albrecht, P.: Clues to early diagenetic sulfurization processes from mild chemical cleavage of labile sulfur-rich geomacromolecules, Geochim. Cosmochim. Ac., 64, 3485–3503, https://doi.org/10.1016/S0016-7037(00)00443-9, 2000.
Ahrens, J., Beck, M., Böning, P., Degenhardt, J., Schnetger, B., and Brumsack, H.: Thallium cycling in pore waters of intertidal beach sediments, Geochim. Cosmochim. Ac., 306, 321–339, https://doi.org/10.1016/j.gca.2021.04.009, 2021.
Akintomide, O. A., Adebayo, S., Horn, J. D., Kelly, R. P., and Johannesson, K. H.: Geochemistry of the redox-sensitive trace elements molybdenum, tungsten, and rhenium in the euxinic porewaters and bottom sediments of the Pettaquamscutt River estuary, Rhode Island, Chem. Geol., 584, 120499, https://doi.org/10.1016/j.chemgeo.2021.120499, 2021.
Al-Farawati, R. and van den Berg, C. M. G.: Metal–sulfide complexation in seawater, Mar. Chem., 63, 331–352, https://doi.org/10.1016/S0304-4203(98)00056-5, 1999.
Alfken, S., Wörmer, L., Lipp, J. S., Napier, T., Elvert, M., Wendt, J., Schimmelmann, A., and Hinrichs, K. -U.: Disrupted coherence between upwelling strength and redox conditions reflects source water change in Santa Barbara Basin during the 20th century, Paleocean. Paleoclim., 36, e2021PA004354, https://doi.org/10.1029/2021PA004354, 2021.
Algeo, T. J.: Can marine anoxic events draw down the trace element inventory of seawater?, Geology, 32, 1057–1060, https://doi.org/10.1130/G20896.1, 2004.
Algeo, T. J. and Maynard, J. B.: Trace-element behaviour and redox facies in core shales of Upper Pennsylvanian Kansas-type cyclothems, Chem. Geol., 206, 289–318, 2004.
Algeo, T. J., and Lyons, T. W. Mo–total organic carbon covariation in modern anoxic marine environments: Implications for analysis of paleoredox and paleohydrographic conditions, Paleocean. Paleoclim., 21, PA1016, https://doi.org/10.1029/2004PA001112, 2006.
Algeo, T. J. and Tribovillard, N.: Environmental analysis of paleoceanographic systems based on molybdenum-uranium covariation, Chem. Geol., 268, 211–225, https://doi.org/10.1016/j.chemgeo.2009.09.001, 2009.
Algeo, T. J. and Rowe, H.: Paleoceanographic applications of trace-metal concentration data, Chem. Geol., 324, 6–18, https://doi.org/10.1016/j.chemgeo.2011.09.002, 2012.
Algeo, T. J., Meyers, P. A., Robinson, R. S., Rowe, H., and Jiang, G. Q.: Icehouse–greenhouse variations in marine denitrification, Biogeosciences, 11, 1273–1295, https://doi.org/10.5194/bg-11-1273-2014, 2014.
Algeo, T. J. and Li, C.: Redox classifications and calibration of redox thresholds in sedimentary systems, Geochim. Cosmochim. Ac., 287, 8–26, https://doi.org/10.1016/j.gca.2020.01.055, 2020.
Alibo, D. S. and Nozaki, Y.: Rare earth elements in seawater: particle association, shale-normalization, and Ce oxidation, Geochim. Cosmochim. Ac., 63, 363–372, https://doi.org/10.1016/S0016-7037(98)00279-8, 1999.
Altabet, M. A., Deuser, W. G., and Honjo, S.: Seasonal and depth-related changes in the source of sinking particles in the North Atlantic, Nature, 354, 136–139, https://doi.org/10.1038/354136a0, 1991.
Altabet, M. A. and Francois, R.: Sedimentary nitrogen isotopic ratio as a recorder for surface ocean nitrate utilization, Glob. Biogeochem. Cy., 8, 103–116, https://doi.org/10.1029/93GB03396, 1994.
Altabet, M. A., Francois, R., Murray, D. W., and Prell, W. L.: Climate-related variations in denitrification in the Arabian Sea from sediment 15N
Altenbach, A. V., Pflaumann, U., Schiebel, R., Thies, A., Timm, S., and Trauth, M.: Scaling percentages and distributional patterns of benthic foraminifera with flux rates of organic carbon, J. Foramin. Res., 29, 173–185, 1999.
Alve, E. and Bernhard, J. M.: Vertical migratory response of benthic foraminifera to controlled oxygen concentrations in an experimental mesocosm, Mar. Ecol. Prog. Ser., 116, 137–151, https://doi.org/10.3354/meps116137, 1995.
Alve, E. and Murray, J. W: Temporal variability in vertical distributions of live (stained) intertidal foraminifera, Southern England, J. Foramin. Res., 31, 12–24, https://doi.org/10.2113/0310012, 2001.
Amos, C. L., Sutherland, T. F., Radzijewski, B., and Doucette, M.: A rapid technique to determine bulk density of fine-grained sediments by X-ray computed tomography, J. Sediment. Res., 66, 1023–1039, https://doi.org/10.1306/D4268144-2B26-11D7-8648000102C1865D, 1996.
Amrani, A. and Aizenshtat, Z.: Reaction of polysulfide anions with α,β unsaturated isoprenoid aldehydes in aquatic media: simulation of oceanic conditions, Org. Geochem., 35, 909–21, https://doi.org/10.1016/j.orggeochem.2004.04.002, 2004.
Amrani, A., Said-Ahamed, W., and Aizenshtat, Z.: The δ34S values of the early-cleaved sulfur upon low temperature pyrolysis of a synthetic polysulfide cross-linked polymer, Org. Geochem., 36, 971–74, https://doi.org/10.1016/j.orggeochem.2005.02.002, 2005.
Andersen, M., Romaniello, S., Vance, D., Little, S., Herdman, R., and Lyons, T.: A modern framework for the interpretation of 238U
Andersen, M. B., Stirling, C. H., and Weyer, S.: Uranium isotope fractionation, Rev. Mineral. Geochem., 82, 799–850, https://doi.org/10.2138/rmg.2017.82.19, 2017.
Andersen, M. B., Matthews, A., Vance, D., Bar-Matthews, M., Archer, C., and de Souza, G.: A 10-fold decline in the deep Eastern Mediterranean thermohaline overturning circulation during the last interglacial period, Earth Planet. Sc. Lett., 503, 58–67, https://doi.org/10.1016/j.epsl.2018.09.013, 2018.
Andersen, M., Matthews, A., Bar-Matthews, M., and Vance, D.: Rapid onset of ocean anoxia shown by high U and low Mo isotope compositions of sapropel S1, Geochem. Perspect. Lett., 15, 10–14, https://doi.org/10.7185/geochemlet.2027, 2020.
Anderson, L. and Sarmiento, J.: Redfield ratios of remineralization determined by nutrient data analysis, Global Biogeochem. Cy., 8, 65–80, https://doi.org/10.1029/93GB03318, 1994.
Anderson, R. F., LeHuray, A. P., Fleisher, M. Q., and Murray, J. W.: Uranium deposition in saanich inlet sediments, vancouver island, Geochim. Cosmochi. Ac., 53, 2205–2213, https://doi.org/10.1016/0016-7037(89)90344-X, 1989.
Anderson T. F. and Pratt L. M.: Isotopic evidence for the origin of organic sulfur and elemental sulfur in marine sediments, Acs. Sym. Ser., 612, 378–396, https://doi.org/10.1021/bk-1995-0612.ch021, 1995.
Anderson, R. F., Sachs, J. P., Fleisher, M. Q., Allen, K. A., Yu, J., Koutavas, A., and Jaccard, S. L.: Deep-Sea Oxygen Depletion and Ocean Carbon Sequestration During the Last Ice Age, Global Biogeochem. Cy., 33, 301–317, https://doi.org/10.1029/2018GB006049, 2019.
Angell, R. W.: The Test Structure of the Foraminifer Rosalina floridana, J. Protozool., 14, 299–307, https://doi.org/10.1111/j.1550-7408.1967.tb02001.x, 1967.
Anschutz, P., Jorissen, F. J., Chaillou, G., Abu-Zied, R., and Fontanier, C.: Recent turbidite deposition in the eastern Atlantic: early diagenesis and biotic recovery, J. Mar. Res., 60, 835–854, https://doi.org/10.1357/002224002321505156, 2002.
Arndt, S., Jørgensen, B. B., LaRowe, D. E., Middelburg, J. J., Pancost, R. D., and Regnier, P.: Quantifying the degradation of organic matter in marine sediments: A review and synthesis, Earth-Sci. Rev., 123, 53–86, https://doi.org/10.1016/j.earscirev.2013.02.008, 2013.
Arnold, Z. M.: A Note on Foraminiferan Sieve Plates, Contrib. Cushman Found. Foramin. Res., 5, 77–67, 1954.
Auderset, A., Moretti, S., Taphorn, B., Ebner, P.-R., Kast, E., Wang, X. T., Schiebel, R., Sigman, D. M., Haug, G. H., and Martínez-García, A.: Enhanced ocean oxygenation during Cenozoic warm periods, Nature, 609, 77–82, https://doi.org/10.1038/s41586-022-05017-0, 2022.
Azrieli-Tal, I., Matthews, A., Bar-Matthews, M., Almogi-Labin, A., Vance, D., Archer, C., and Teutsch, N.: Evidence from molybdenum and iron isotopes and molybdenum–uranium covariation for sulphidic bottom waters during Eastern Mediterranean sapropel S1 formation, Earth Planet. Sc. Lett., 393, 231–242, https://doi.org/10.1016/j.epsl.2014.02.054, 2014.
Baas, J. H., Schönfeld, J., and Zahn, R.: Mid-depth oxygen drawdown during Heinrich events: evidence from benthic foraminiferal community structure, trace-fossil tiering, and benthic δ13C at the Portuguese Margin, Mar. Geol., 152, 25–55, https://doi.org/10.1016/S0025-3227(98)00063-2, 1998.
Bahl, A., Gnanadesikan, A., and Pradal, M. A.: Variations in ocean deoxygenation across earth system models: isolating the role of parameterized lateral mixing, Global Biogeochem. Cy., 33, 703–724, https://doi.org/10.1029/2018GB006121, 2019.
Bale, N. J., Hopmans, E. C., Zell, C., Sobrinho, R. L., Kim, J.-H., Sinninghe Damsté, J. S., Villareal, T. A., and Schouten, S.: Long chain glycolipids with pentose head groups as biomarkers for marine endosymbiotic heterocystous cyanobacteria, Org. Geochem., 81, 1–7, https://doi.org/10.1016/j.orggeochem.2015.01.004, 2015.
Bale, N. J., Hennekam, R., Hopmans, E. C., Dorhout, D., Reichart, G.-J., Meer, M. van der, Villareal, T. A., Damsté, J. S. S., and Schouten, S.: Biomarker evidence for nitrogen-fixing cyanobacterial blooms in a brackish surface layer in the Nile River plume during sapropel deposition, Geology, 47, 1088–1092, https://doi.org/10.1130/G46682.1, 2019.
Bandy, O. L.: Ecology and paleoecology of some California foraminifera, Part I. The frequency distribution of recent foraminifera off California, J. Paleontol., 27, 161–182, 1953.
Barker, S. and Elderfield, H.: Foraminifera calcification response to glacial-interglacial changes in atmospheric CO2, Science, 297, 833–836, https://doi.org/10.1126/science.1072815, 2002.
Barker, S., Greaves, M., and Elderfield, H.: A study of cleaning procedures used for foraminiferal Mg
Barmawidjaja, D. M., Van der Zwaan, G. J., Jorissen, F. J., and Puskaric, S.: 150 years of eutrophication in the northern Adriatic Sea: evidence from a benthic foraminiferal record, Mar. Geol., 122, 367–384, https://doi.org/10.1016/0025-3227(94)00121-Z, 1995.
Barnes, C. E. and Cochran, J. K.: Uranium removal in oceanic sediments and the oceanic U balance, Earth Planet. Sc. Lett., 97, 94–101, https://doi.org/10.1016/0012-821X(90)90101-3, 1990.
Barras, C., Mouret, A., Nardelli, M. P., Metzger, E., Petersen, J., La, C., Filipsson, H. L., and Jorissen, F.: Experimental calibration of manganese incorporation in foraminiferal calcite, Geochim. Cosmochim. Ac., 237, 49–64, https://doi.org/10.1016/j.gca.2018.06.009, 2018.
Barrenechea Angeles, I., Romero-Martinez, M.L., Cavaliere, M., Varella, S., Francescangeli, F., Schirone, A., Delbono, I., Margiotta, F., Corinaldesi, C., Chiavarini, S., Montereali, M.R., Rimauro, J., Parrella, L., Musco, L., Dell'Anno, A., Tangherlini, M., Pawlowski, J., and Frontalini, F.: Encapsulated in sediments: eDNA deciphers the ecosystem history of one of the most polluted European marine sites, Enviro. Int., 172, 107738, https://doi.org/10.1016/j.envint.2023.107738, 2023.
Batista, F. C., Ravelo, A. C., Crusius, J., Casso, M. A., and McCarthy, M. D.: Compound specific amino acid δ15N in marine sediments: A new approach for studies of the marine nitrogen cycle, Geochim. Cosmochim. Ac., 142, 553–569, https://doi.org/10.1016/j.gca.2014.08.002, 2014.
Bauersachs, T., Compaoré, J., Hopmans, E. C., Stal, L. J., Schouten, S., and Sinninghe Damsté, J. S.: Distribution of heterocyst glycolipids in cyanobacteria, Phytochemistry, 70, 2034–2039, https://doi.org/10.1016/j.phytochem.2009.08.014, 2009a.
Bauersachs, T., Hopmans, E. C., Compaoré, J., Stal, L. J., Schouten, S., and Sinninghe Damsté, J. S.: Rapid analysis of long-chain glycolipids in heterocystous cyanobacteria using high-performance liquid chromatography coupled to electrospray ionization tandem mass spectrometry, Rapid Commun. Mass Sp., 23, 1387–1394, https://doi.org/10.1002/rcm.4009, 2009b.
Bauersachs, T., Speelman, E. N., Hopmans, E. C., Reichart, G.-J., Schouten, S., and Sinninghe Damsté, J. S.: Fossilized glycolipids reveal past oceanic N2 fixation by heterocystous cyanobacteria, P. Nat. Acad. Sci. USA, 107, 19190–19194, https://doi.org/10.1073/pnas.1007526107, 2010.
Bé, A. W. H.: Shell Porosity of Recent Planktonic Foraminifera as a Climatic Index, Science, 161, 881–884, https://doi.org/10.1126/science.161.3844.881, 1968.
Bé, A. W. H., Jongebloed, W. L., and McIntyre, A.: X-ray microscopy of recent planktonic Foraminifera, J. Paleontol., 43, 1384–1396, 1969.
Becker, K. W., Elling, F. J., Schröder, J. M., Lipp, J. S., Goldhammer, T., Zabel, M., Elvert, M., Overmann, J., and Hinrichs, K.-U.: Isoprenoid Quinones Resolve the Stratification of Redox Processes in a Biogeochemical Continuum from the Photic Zone to Deep Anoxic Sediments of the Black Sea, Appl. Environ. Microb., 84, e02736-17, https://doi.org/10.1128/AEM.02736-17, 2018.
Behl, R. J. and Kennett, J. P.: Brief interstadial events in the Santa Barbara basin, NE Pacific, during the past 60 kyr, Nature, 379, 243–246, https://doi.org/10.1038/379243a0, 1996.
Belanger, C. L.: Volumetric analysis of benthic foraminifera: Intraspecific test size and growth patterns related to embryonic size and food resources, Mar. Micropaleontol., 176, 102170, https://doi.org/10.1016/j.marmicro.2022.102170, 2022.
Bender, M. L., Klinkhammer, G. P., and Spencer, D. W.: Manganese in seawater and the marine manganese balance, Deep-Sea Res., 24, 799–812, https://doi.org/10.1016/0146-6291(77)90473-8, 1977.
Bennett, W. W. and Canfield, D. E.: Redox-sensitive trace metals as paleoredox proxies: A review and analysis of data from modern sediments, Earth-Sci. Rev., 204, 103175, https://doi.org/10.1016/j.earscirev.2020.103175, 2020.
Berger, W. H.: Deep-sea carbonates: Pleistocene dissolution cycles, J. Foramin. Res., 3, 187–195, https://doi.org/10.2113/gsjfr.3.4.187, 1973.
Berndmeyer, C., Birgel, D., Brunner, B., Wehrmann, L. M., Jöns, N., Bach, W., Arning, E. T., Föllmi, K. B., and Peckmann, J.: The influence of bacterial activity on phosphorite formation in the Miocene Monterey Formation, California, Palaeogeogr. Palaeocl., 317, 171–181, https://doi.org/10.1016/j.palaeo.2012.01.004,2012.
Bernhard, J. M.: Characteristic assemblages and morphologies of benthic foraminifera from anoxic, organic-rich deposits; Jurassic through Holocene, J. Foramin. Res., 16, 207–215, https://doi.org/10.2113/gsjfr.16.3.207, 1986.
Bernhard, J. M.: Benthic foraminiferal distribution and biomass related to pore-water oxygen content central California continental slope and rise, Deep-Sea Res. Pt A, 39, 585–605, https://doi.org/10.1016/0198-0149(92)90090-G, 1992.
Bernhard, J. M.: Experimental and field evidence of Antarctic foraminiferal tolerance to anoxia and hydrogen sulfide, Mar. Micropaleontol., 20, 203-213, https://doi.org/10.1016/0377-8398(93)90033-T, 1993.
Bernhard, J. M. and Alve, E.: Survival, ATP pool, and ultrastructural characterization of benthic foraminifera from Drammensfjord (Norway): response to anoxia, Mar. Micropaleontol., 28, 5–17, https://doi.org/10.1016/0377-8398(95)00036-4, 1996.
Bernhard, J. M., Sen Gupta, B. K., and Borne, P. F.: Benthic foraminiferal proxy to estimate dysoxic bottom-water oxygen concentrations; Santa Barbara Basin, US Pacific continental margin, J. Foramin. Res., 27, 301-310, https://doi.org/10.2113/gsjfr.27.4.301, 1997.
Bernhard, J. M. and Sen Gupta, B. K.: Foraminifera of oxygen-depleted environments, in: Modern Foraminifera, edited by: Sen Gupta, B. K., Springer, Dordrecht, Germany, 201–216, https://doi.org/10.1007/0-306-48104-9_12, 1999.
Bernhard, J. M., Buck, K. R., Farmer, M. A., and Bowser, S.: The Santa Barbara Basin is a symbiosis oasis, Nature, 403, 77–80, https://doi.org/10.1038/47476, 2000.
Bernhard, J. M., Barry, J. P., Buck, K. R., and Starczak, V. R.: Impact of intentionally injected carbon dioxide hydrate on deep-sea benthic foraminiferal survival, Glob. Change Biol., 15, 2078–2088, https://doi.org/10.1111/j.1365-2486.2008.01822.x, 2009.
Bernhard, J. M., Goldstein, S. T., and Bowser, S. S.: An ectobiont-bearing foraminiferan, Bolivina pacifica, that inhabits microxic pore waters: cell-biological and paleoceanographic insights, Environ. Microbiol., 12, 2107–2119, https://doi.org/10.1111/j.1462-2920.2009.02073.x, 2010.
Bernhard, J. M., Wit, J. C., Starczak, V. R., Beaudoin, D. J., Phalen, W. G., and McCorkle, D. C.: Impacts of Multiple Stressors on a Benthic Foraminiferal Community: A Long-Term Experiment Assessing Response to Ocean Acidification, Hypoxia and Warming, Front. Mar. Sci., 8, 643339, https://doi.org/10.3389/fmars.2021.643339, 2021.
Berner, R. A.: A new geochemical classification of sedimentary environments, J. Sediment. Petrol., 51, 359–365, https://doi.org/10.1306/212F7C7F-2B24-11D7-8648000102C1865D, 1981.
Berthold, W.-U.: Ultrastructure and function of wall perforations in Patellina corrugata Williamson, Foraminiferida, J. Foramin. Res., 6, 22–29, https://doi.org/10.2113/gsjfr.6.1.22, 1976.
Bianchi, T. S., Cui, X., Blair, N. E., Burdige, D. J., Eglinton, T. I., and Galy, V.: Centers of organic carbon burial and oxidation at the land-ocean interface, Org. Geochem., 115, 138–155, https://doi.org/10.1016/j.orggeochem.2017.09.008, 2018.
Bijma, J., Faber, W. W., and Hemleben, C.: Temperature and salinity limits for growth and survival of some planktonic foraminifera in laboratory cultures, J. Foramin. Res., 20, 95–116, https://doi.org/10.2113/gsjfr.20.2.95, 1990.
Bijma, J., Spero, H. J., and Lea, D. W.: Reassessing foraminiferal stable isotope geochemistry: impact of the oceanic carbonate system (experimental results), in: Use of Proxies in Paleoceanography: Examples from the South Atlantic, edited by: Fischer, G. and Wefer, G., Springer, Berlin, 489–512, https://doi.org/10.1007/978-3-642-58646-0_20, 1999.
Bindoff, N. L., Cheung, W. W. L., Kairo, J. G., Ariìstegui, J., Guinder, V. A., Hallberg, R., Hilmi, N., Jiao, N., Karim, M. S., Levin, L., O'Donoghue, S., Purca Cuicapusa, S. R., Rinkevich, B., Suga, T., Tagliabue, A., and Williamson, P.: Changing Ocean, Marine Ecosystems, and Dependent Communities, in: IPCC Special Report on the Ocean and Cryosphere in a Changing Climate, edited by: Pörtner, H. -O., Roberts, D. C., Masson-Delmotte, V., Zhai, P., Tignor, M., Poloczanska, E., Mintenbeck, K., Alegriìa, A., Nicolai, M., Okem, A., Petzold, J., Rama, B., and Weyer, N. M., Cambridge University Press, Cambridge, UK and New York, NY, USA, 447–587, https://doi.org/10.1017/9781009157964.007, 2019.
Biz̆ić, M., Klintzsch, T., Ionescu, D., Hindiyeh, M. Y., Günthel, M., Muro-Pastor, A. M., Eckert, W., Urich, T., Keppler, F., and Grossart, H.-P.: Aquatic and terrestrial cyanobacteria produce methane, Science Advances, 6, eaax5343, https://doi.org/10.1126/sciadv.aax5343, 2020.
Blaga, C. I., Reichart, G. -J., Heiri, O., and Sinninghe Damsté, J. S.: Tetraether membrane lipid distributions in water-column particulate matter and sediments: a study of 47 European lakes along a north–south transect, J. Paleolimnol., 41, 523–540, https://doi.org/10.1007/s10933-008-9242-2, 2009.
Blair, N. E., and Aller, R. C.: The Fate of Terrestrial Organic Carbon in the Marine Environment, Annu. Rev. Mar. Sci., 4, 401–423, https://doi.org/10.1146/annurev-marine-120709-142717, 2012.
Blumenberg, M., Seifert, R., Reitner, J., Pape, T., and Michaelis, W.: Membrane lipid patterns typify distinct anaerobic methanotrophic consortia, P. Nat. Acad. Sci. USA, 101, 11111–11116, https://doi.org/10.1073/pnas.0401188101, 2004.
Blumenberg, M., Krüger, M., Nauhaus, K., Talbot, H. M., Oppermann, B. I., Seifert, R., Pape, T., and Michaelis, W.: Biosynthesis of hopanoids by sulfate-reducing bacteria (genus Desulfovibrio), Environ. Microbiol., 8, 1220–1227, https://doi.org/10.1111/j.1462-2920.2006.01014.x, 2006.
Blumenberg, M., Hoppert, M., Krüger, M., Dreier, A., and Thiel, V.: Novel findings on hopanoid occurrences among sulfate reducing bacteria: Is there a direct link to nitrogen fixation?, Org. Geochem., 49, 1–5, https://doi.org/10.1016/j.orggeochem.2012.05.003, 2012.
Bodelier, P. L. E., Gillisen, M. -J. B., Hordijk, K., Sinninghe Damsté, J. S., Rijpstra, W. I. C., Geenevasen, J. A. J., and Dunfield, P. F.: A reanalysis of phospholipid fatty acids as ecological biomarkers for methanotrophic bacteria, ISME J., 3, 606–617, https://doi.org/10.1038/ismej.2009.6, 2009.
Boer, W., Nordstad, S., Weber, M., Mertz-Kraus, R., Hönisch, B., Bijma, J., Raitzsch, M., Wilhelms-Dick, D., Foster, G. L., Goring-Harford, H., and Nürnberg, D.: New calcium carbonate nano-particulate pressed powder pellet (NFHS-2-NP) for LA-ICP-OES, LA-(MC)-ICP-MS and µXRF, Geostand. Geoanal. Res., 46, 411–432, https://doi.org/10.1111/ggr.12425, 2022.
Boersma, A., Silva, I. P., and Shackleton, N. J.: Atlantic Eocene planktonic foraminiferal paleohydrographic indicators and stable isotope paleoceanography, Paleocean. Paleoclim., 2, 287–331, https://doi.org/10.1029/PA002i003p00287, 1987.
Boersma, A. and Silva, I. P.: Atlantic Paleogene biserial heterohelicid foraminifera and oxygen minima, Paleocean. Paleoclim., 4, 271–286, https://doi.org/10.1029/PA004i003p00271, 1989.
Boetius, A., Ravenschlag, K., Schubert, C. J., Rickert, D., Widdel, F., Gieseke, A., Amann, R., Jorgensen, B. B., Witte, U., and Pfannkuche, O.: A marine microbial consortium apparently mediating anaerobic oxidation of methane, Nature, 407, 623–626, https://doi.org/10.1038/35036572, 2000.
Boiteau, R., Greaves, M., and Elderfield, H.: Authigenic uranium in foraminiferal coatings: A proxy for ocean redox chemistry, Paleocean. Paleoclim., 27, PA3227, https://doi.org/10.1029/2012PA002335, 2012.
Bograd, S. J., Castro, C. G., Di Lorenzo, E., Palacios, D. M., Bailey, H., Gilly, W., and Chavez, F. P.: Oxygen declines and the shoaling of the hypoxic boundary in the California Current, Geophys. Res. Lett., 35, L12607, https://doi.org/10.1029/2008GL034185, 2008.
Boltovskoy, E., Scott, D. B., and Medioli, F. S.: Morphological variations of benthic foraminiferal tests in response to changes in ecological parameters: a review, J. Paleontol., 65, 175–185, https://doi.org/10.1017/S0022336000020394, 1991.
Böning, P., Brumsack, H.-J., Böttcher, M. E., Schnetger, B., Kriete, C., Kallmeyer, J., and Borchers, S. L.: Geochemistry of Peruvian near-surface sediments, Geochim. Cosmochim. Ac., 68, 4429–4451, https://doi.org/10.1016/j.gca.2004.04.027, 2004.
Böning, P., Bard, E., and Rose, J. : Toward direct, micron-scale XRF elemental maps and quantitative profiles of wet marine sediments, Geochem. Geophy. Geosy., 8, Q05004, https://doi.org/10.1029/2006GC001480, 2007.
Böning, P., Brumsack, H.-J., Schnetger, B., Grunwald, M.: Trace element signatures of Chilean upwelling sediments at ∼ 36S, Mar. Geol., 259, 112–121, https://doi.org/10.1016/j.margeo.2009.01.004, 2009.
Böning, P., Shaw, T., Pahnke, K., and Brumsack, H. J.: Nickel as indicator of fresh organic matter in upwelling sediments, Geochim. Cosmochim. Ac., 162, 99–108, https://doi.org/10.1016/j.gca.2015.04.027, 2015.
Bonatti, E., Fisher, D. E., Joensuu, O., and Rydell, H. S.: Postdepositional mobility of some transition elements, phosphorus, uranium and thorium in deep sea sediments, Geochim. Cosmochim. Acta, 35, 189–201, https://doi.org/10.1016/0016-7037(71)90057-3, 1971.
Bouchet, V. M., Alve, E., Rygg, B., and Telford, R. J.: Benthic foraminifera provide a promising tool for ecological quality assessment of marine waters, Ecol. Indic., 23, 66–75, https://doi.org/10.1016/j.ecolind.2012.03.011, 2012.
BouDagher-Fadel, M. K: Biostratigraphic and Geological Significance of Planktonic Foraminifera, UCL Press, London, https://doi.org/10.14324/111.9781910634257, 2015.
Boudreau, B. P.: Is burial velocity a master parameter for bioturbation?, Geochim. Cosmochim. Ac., 58, 1243–1249, https://doi.org/10.1016/0016-7037(94)90378-6, 1994.
Boussafir, M., Gelin, F., Lallier-Vergès, E., Derenne, S., Bertrand, P., and Largeau, C.: Electron Microscopy and pyrolysis of kerogens from the Kimmeridge Clay Formation, UK: Source organisms, preservation processes, and origin of microcycles, Geochim. Cosmochim. Ac., 59, 3731–47, https://doi.org/10.1016/0016-7037(95)00273-3, 1995.
Boussafir, M. and Lallier-Vergès, E.: Accumulation of organic matter in the Kimmeridge Clay Formation (KCF): An update fossilisation model for marine petroleum source-rocks, Mar. Petrol. Geol., 14, 75–83, https://doi.org/10.1016/S0264-8172(96)00050-5, 1997.
Boyle, E. A. and Keigwin, L. D.: Comparison of Atlantic and Pacific paleochemical records for the last 215,000 years: changes in deep ocean circulation and chemical inventories, Earth Planet. Sc. Lett., 76, 135–150, https://doi.org/10.1016/0012-821X(85)90154-2, 1985.
Boyle, R. A., Dahl, T. W., Dale, A. W., Shields-Zhou, G. A., Zhu, M. Y., Brasier, M. D., Canfield, D. E., and Lenton, T. M.: Stabilization of the coupled oxygen and phosphorus cycles by the evolution of bioturbation, Nat. Geosci., 7, 671–676, https://doi.org/10.1038/ngeo2213, 2014.
Bradbury, H. J., Turchyn, A. V., Bateson, A., Antler, G., Fotherby, A., Druhan, J. L., Greaves, M., Sevilgen, D. S., and Hodell, D. A.: The Carbon-Sulfur Link in the Remineralization of Organic Carbon in Surface Sediments, Front. Earth Sci., 9, 652960, https://doi.org/10.3389/feart.2021.652960, 2021.
Bradbury, H. J., Thomas, N. C., Mleneck-Vautravers, M., and Hodell, D. A.: Revisiting the relationship between the pore water carbon isotope gradient and bottom water oxygen concentrations, Geochim. Cosmochim. Ac., 366, 84–94, https://doi.org/10.1016/j.gca.2023.12.011, 2024.
Bradley, A. S., Fredricks, H., Hinrichs, K. -U., and Summons, R. E.: Structural diversity of diether lipids in carbonate chimneys at the Lost City Hydrothermal Field, Org. Geochem., 40, 1169–1178, https://doi.org/10.1016/j.orggeochem.2009.09.004, 2009.
Bradtmiller, L. I., Anderson, R. F., Sachs, J. P., and Fleisher, M. Q.: A deeper respired carbon pool in the glacial equatorial Pacific Ocean, Earth Planet. Sc. Lett., 299, 417–425, https://doi.org/10.1016/j.epsl.2010.09.022, 2010.
Branson, O., Bonnin, E. A., Perea, D. E., Spero, H. J., Zhu, Z., Winters, M., Honisch, B., Russell, A. D., Fehrenbacher, J. S., and Gagnon, A. C.: Nanometer-scale chemistry of a calcite biomineralization template: Implications for skeletal composition and nucleation, P. Nat. Acad. Sci. USA, 113, 12934–12939, https://doi.org/10.1073/pnas.1522864113, 2016.
Brassell, S. C., Wardroper, A. M. K., Thomson, I. D., Maxwell, J. R., and Eglinton, G.: Specific acyclic isoprenoids as biological markers of methanogenic bacteria in marine sediments, Nature, 290, 693–696, https://doi.org/10.1038/290693a0, 1981.
Brassell, S. C.: Molecular changes in sediment lipids as indicators of systematic early diagenesis, Philos. T. R. Soc. S-A, 315, 57–75, https://doi.org/10.1098/rsta.1985.0029, 1985.
Bratsch, S. G.: Standard electrode potentials and temperature coefficients in water at 298.15 K, J. Phys. Chem. Ref. Data, 18, 1–21, https://doi.org/10.1063/1.555839, 1989.
Breitburg, D., Levin, L. A., Oschlies, A., Grégoire, M., Chavez, F. P., Conley, D. J., Garçon, V., Gilbert, D., Gutiérrez, D., Isensee, K., Jacinto, G. S., Limburg, K. E., Montes, I., Naqvi, S. W. A., Pitcher, G. C., Rabalais, N. N., Roman, M. R., Rose, K. A., Seibel, B. A., Telszewski, M., Yasuhara, M., and Zhang, J.: Declining oxygen in the global ocean and coastal waters, Science, 359, eaam7240, https://doi.org/10.1126/science.aam7240, 2018.
Briggs, D. E. G. and Summons, R. E.: Ancient biomolecules: Their origins, fossilization, and role in revealing the history of life, BioEssays, 36, 482–490, https://doi.org/10.1002/bies.201400010, 2014.
Briguglio, A.: Hydrodynamic behaviour of nummulitids, Ph.D. thesis, Universität Wien, Austria, 185 pp., https://doi.org/10.25365/thesis.12131, 2010.
Brinkmann, I., Ni, S., Schweizer, M., Oldham, V. E., Quintana Krupinski, N. B., Medjoubi, K., Somogyi, A., Whitehouse, M. J., Hansel, C. M., Barras, C., Bernhard, J. M., and Fillipson, H. L.: Foraminiferal Mn
Brinkmann, I., Barras, C., Jilbert, T., Paul, K. M., Somogyi, A., Ni, S., Schweizer, M., Bernhard, J. M., and Filipsson, H. L.: Benthic foraminiferal Mn
Brocks, J. J. and Schaeffer, P.: Okenane, a biomarker for purple sulfur bacteria (Chromatiaceae), and other new carotenoid derivatives from the 1640 Ma Barney Creek Formation, Geochim. Cosmochim. Ac., 72, 1396–1414, https://doi.org/10.1016/j.gca.2007.12.006, 2008.
Broecker, W. and Clark, E.: An evaluation of Lohmann's foraminifera weight dissolution index, Paleocean. Paleoclim., 16, 531–534, https://doi.org/10.1029/2000PA000600, 2001
Bruland, K. W.: Trace elements in seawater, in: Chemical Oceanography 8, edited by: Riley, J. P. and Chester, R., Academic Press, London, 1983, 158–220, ISBN: 9781483206400, 1983.
Bruland, K. and Lohan, M. C.: Controls of trace metals in seawater, in: Treatise on geochemistry, Vol. 6, edited by: Elderfield, H., Holland, H. D., and Turekian, K. K., Elsevier, 23–47, https://doi.org/10.1016/B0-08-043751-6/06105-3, 2006.
Brumsack, H. J.: The trace metal content of recent organic carbon-rich sediments: Implications for cretaceous black shale formation, Palaeogeogr. Palaeocl., 232, 344–361, https://doi.org/10.1016/j.palaeo.2005.05.011, 2006.
Brunner, B., Contreras, S., Lehmann, M. F., Matantseva, O., Rollog, M., Kalvelage, T., Klockgether, G., Lavik, G., Jetten, M. S. M., Kartal, B., and Kuypers, M. M. M.: Nitrogen isotope effects induced by anammox bacteria, P. Nat. Acad. Sci. USA, 110, 18994–18999, https://doi.org/10.1073/pnas.1310488110, 2013.
Brüske, A., Weyer, S., Zhao, M.-Y., Planavsky, N., Wegwerth, A., Neubert, N., Dellwig, O., Lau, K., and Lyons, T.: Correlated molybdenum and uranium isotope signatures in modern anoxic sediments: Implications for their use as paleo-redox proxy, Geochim. Cosmochim. Ac., 270, 449–474, https://doi.org/10.1016/j.gca.2019.11.031, 2020.
Bunzel, D., Schmiedl, G., Lindhorst, S., Mackensen, A., Reolid, J., Romahn, S., and Betzler, C.: A multi-proxy analysis of Late Quaternary ocean and climate variability for the Maldives, Inner Sea, Clim. Past 13, 1791–1813, https://doi.org/10.5194/cp-13-1791-2017, 2017.
Burdige, D. J. and Gieskes, J. M.: A pore water/solid phase diagenetic model for manganese in marine sediments, Am. J. Sci., 283, 29–47, https://doi.org/10.2475/ajs.283.1.29, 1983.
Burdige, D. J.: The biogeochemistry of manganese and iron reduction in marine sediments, Earth-Sci. Rev., 35, 249–284, https://doi.org/10.1016/0012-8252(93)90040-E, 1993.
Burdige, D. J.: Preservation of organic matter in marine sediments: Controls, mechanisms, and an imbalance in sediment organic carbon budgets?, Chem. Rev., 107, 467–485, https://doi.org/10.1021/cr050347q, 2007.
Burke, J., Renema, W., Henehan, M. J., Elder, L. E., Davis, C. V., Maas, A. E., Foster, G. L., Schiebel, R., and Hull, P. M.: Factors influencing test porosity in planktonic foraminifera, Biogeosciences, 15, 6607–6619, https://doi.org/10.5194/bg-15-6607-2018, 2018.
Burke, J. E., Renema, W., Schiebel, R., and Hull, P. M.: Three-dimensional analysis of inter- and intraspecific variation in ontogenetic growth trajectories of planktonic foraminifera, Mar. Micropaleontol., 155, 1–12, https://doi.org/10.1016/j.marmicro.2019.101794, 2020.
Buzas, M. A., Culver, S. J., and Jorissen, F. J.: A statistical evaluation of the microhabitats of living (stained) infaunal benthic foraminifera, Mar. Micropaleontol., 20, 311–320, https://doi.org/10.1016/0377-8398(93)90040-5, 1993.
Callbeck, C. M., Canfield, D. E., Kuypers, M. M. M., Yilmaz, P., Lavik, G., Thamdrup, B., Schubert, C. J., and Bristow, L. A.: Sulfur cycling in oceanic oxygen minimum zones, Limnol. Oceanogr., 66, 2360–2392, https://doi.org/10.1002/lno.11759, 2021.
Calvert, S. E. and Pedersen, T. F.: Sedimentary geochemistry of manganese; implications for the environment of formation of manganiferous black shales, Econ. Geol., 91, 36–47, https://doi.org/10.2113/gsecongeo.91.1.36, 1996.
Calvert, S. E. and Pedersen, T. F.: Elemental Proxies for Palaeoclimatic and Palaeoceanographic Variability in Marine Sediments: Interpretation and Application, in: Paleoceanography of the Late Cenozoic, Part 1, Methods, edited by: Hillaire-Marcel, C. and de Vernal, A., Elsevier, New York, 567–644, https://doi.org/10.1016/S1572-5480(07)01019-6, 2007.
Campos, M. L. A. M., Farrenkopf, A. M., Jickells, T. D., and Luther III, G. W.: A comparison of dissolved iodine cycling at the Bermuda Atlantic Time-series Station and Hawaii Ocean Time-series Station, Deep-Sea Res. Pt. II, 43, 455–466, https://doi.org/10.1016/0967-0645(95)00100-X, 1996.
Canfield, D. E.: Biogeochemistry of sulfur isotopes, Rev. Mineral. Geochem., 43, 607–636, https://doi.org/10.2138/gsrmg.43.1.607, 2001.
Canfield, D. E. and Farquhar, J.: Animal evolution, bioturbation, and the sulfate concentration of the oceans, P. Nat. Acad. Sci. USA, 106, 8123–8127, https://doi.org/10.1073/pnas.0902037106, 2009.
Canfield, D. E. and Thamdrup, B.: Towards a consistent classification scheme for geochemical environments, or, why we wish the term “suboxic” would go away, Geobiology, 7, 385–392, https://doi.org/10.1111/j.1472-4669.2009.00214.x, 2009.
Canfield, D. E., Stewart, F.J., Thamdrup, B., Brabandere, L.D., Dalsgaard, T., DeLong, E. F., Revsbech, N. P., and Ulloa, O.: A Cryptic Sulfur Cycle in Oxygen-Minimum–Zone Waters off the Chilean Coast, Science, 330, 1375–1378, https://doi.org/10.1126/science.1196889, 2010.
Cardich, J., Morales, M., Quipúzcoa, L., Sifeddine, A., and Gutiérrez, D.: Benthic foraminiferal communities and microhabitat selection on the continental shelf off central Peru, in: Anoxia, edited by: Altenbach, A., Bernhard, J., and Seckbach, J., Springer, Dordrecht, Germany, 323–340, https://doi.org/10.1007/978-94-007-1896-8_17, 2012.
Cardich, J., Gutiérrez, D., Romero, D., Pérez, A., Quipúzcoa, L., Marquina, R., Yupanqui, W., Solís, J., Carhuapoma, W., Sifeddine, A., and Rathburn, A.: Calcareous benthic foraminifera from the upper central Peruvian margin: control of the assemblage by pore water redox and sedimentary organic matter, Mar. Ecol. Prog. Series, 535, 63–87, https://doi.org/10.3354/meps11409, 2015.
Cardich, J., Sifeddine, A., Salvatteci, R., Romero, D., Briceño-Zuluaga, F., Graco, M., Anculle, T., Almeida, C., and Gutiérrez, D.: Multidecadal Changes in Marine Subsurface Oxygenation Off Central Peru During the Last ca. 170 Years, Front. Mar. Sci., 6, 270, https://doi.org/10.3389/fmars.2019.00270, 2019.
Caromel, A. G. M., Schmidt, D. N., Fletcher, I., and Rayfield, E. J.: Morphological Change During The Ontogeny Of The Planktic Foraminifera, J. Micropalaeontol., 35, 2–19, https://doi.org/10.1144/jmpaleo2014-017, 2016.
Caromel, A. G. M., Schmidt, D. N., and Rayfield, E. J.: Ontogenetic constraints on foraminiferal test construction, Evol. Dev., 19, 157–168, https://doi.org/10.1111/ede.12224, 2017.
Carpenter, S. R., Elser, M. M., and Elser, J. J.: Chlorophyll production, degradation, and sedimentation: Implications for paleolimnology, Limnol. Oceanogr., 31, 112–124, https://doi.org/10.4319/lo.1986.31.1.0112, 1986.
Casanova-Arenillas, S., Rodríguez-Tovar, F. J. and Martínez-Ruiz, F.: Ichnological evidence for bottom water oxygenation during organic rich layer deposition in the westernmost Mediterranean over the Last Glacial Cycle, Mar. Geol., 443, 106673, https://doi.org/10.1016/j.margeo.2021.106673, 2022.
Casciotti, K. L.: Nitrogen and Oxygen Isotopic Studies of the Marine Nitrogen Cycle, Annu. Rev. Mar. Sci., 8, 379–407, https://doi.org/10.1146/annurev-marine-010213-135052, 2016.
Castillo, A., Hromic, T., Uribe, R. A., Valdés, J., Sifeddine, A., Quezada, L., Vega, S. -E., Arenciba, A., Días-Ochoa, J., and Guiñez, M.: Living (stained) calcareous benthic foraminiferal assemblages (> 125µm) in a coastal upwelling zone of the Humboldt Current System, Northern Chile (∼ 27° S), Reg. Stud. Mar. Sci., 44, 101725, https://doi.org/10.1016/j.rsma.2021.101725, 2021.
Castillo, A., Valdés, J., Sifeddine, A., Reyss, J., Bouloubassi, I., and Ortlieb, L.: Changes in biological productivity and ocean-climatic fluctuations during the last ∼ 1.5 kyr in the Humboldt ecosystem off northern Chile (27° S): a multiproxy approach, Palaeogeogr. Palaeocl., 485, 798–815, https://doi.org/10.1016/j.palaeo.2017.07.038, 2017.
Castillo, A., Valdés, J., Sifeddine, A., Vega, S. E., Díaz-Ochoa, J., and Marambio, Y.: Evaluation of redox-sensitive metals in marine surface sediments influenced by the oxygen minimum zone of the Humboldt Current System, Northern Chile, Int. J. Sediment Res., 34, 178–190, https://doi.org/10.1016/j.ijsrc.2018.08.005, 2019.
Caulle, C., Koho, K. A., Mojtahid, M., Reichart, G. J., and Jorissen, F. J.: Live (Rose Bengal stained) foraminiferal faunas from the northern Arabian Sea: faunal succession within and below the OMZ, Biogeosciences, 11, 1155–1175, https://doi.org/10.5194/bg-11-1155-2014, 2014.
Caulle, C., Mojtahid, M., Gooday, A. J., Jorissen, F. J., and Kitazato, H.: Living (Rose-Bengal-stained) benthic foraminiferal faunas along a strong bottom-water oxygen gradient on the Indian margin (Arabian Sea), Biogeosciences, 12, 5005–5019, https://doi.org/10.5194/bg-12-5005-2015, 2015.
Cayre, O., Beaufort, L., and Vincent, E.: Paleoproductivity in the Equatorial Indian Ocean for the last 260,000 yr: a transfer function based on planktonic foraminifera, Quaternary Sci. Rev., 18, 839–857, https://doi.org/10.1016/S0277-3791(98)00036-5, 1999.
Chan, F., Barth, J. A., Lubchenco, J., Kirincich, A., Weeks, H., Peterson, W. T., and Menge, B. A.: Emergence of anoxia in the California current large marine ecosystem, Science, 319, 920–920, https://doi.org/10.1126/science.1149016, 2008.
Chance, R., Baker, A. R., Carpenter, L., and Jickells, T. D.: The distribution of iodide at the sea surface, Environ. Sci-Proc. Imp., 16, 1841–1859, https://doi.org/10.1039/C4EM00139G, 2014.
Chang, L., Hoogakker, B. A. A., Heslop, D., Zhao, X., Roberts, A., De Deckker, O., Xue, P., Zeng, F., Wang, S., Berndt, T. A., Stuut, J.-B. W., and Harrison, R. J.: Recurrence of glacial ocean deoxygenation and accumulated respired carbon storage in the Indian Ocean of the last 850,000 years, Nat. Commun., 14, 4841, https://doi.org/10.1038/s41467-023-40452-1, 2023.
Chase, Z., Anderson, R. F., and Fleisher, M. Q.: Evidence from authigenic uranium for increased productivity of the glacial subantarctic ocean, Paleocean. Paleoclim., 16, 468–478, https://doi.org/10.1029/2000PA000542, 2001.
Charrieau, L. M., Nagai, Y., Kimoto, K., Dissard, D., Below, B., Fujita, K., and Toyofuku, T.: The coral reef-dwelling Peneroplis spp. shows calcification recovery to ocean acidification conditions, Sci. Rep., 12, 6373, https://doi.org/10.1038/s41598-022-10375-w, 2022.
Chen, J. H., Edwards, R. L., and Wasserburg, G. J.: 238U, 234U and 232Th in seawater, Earth Planet. Sc. Lett., 80, 241–251, https://doi.org/10.1016/0012-821X(86)90108-1, 1986.
Chen, X., Ling, J.-F., Vance, D., Shields-Zhou, G. A., Zhu, M., Poulton, S. W., Och, L. M., Jiang, S.-Y., Li, D., Cremonese, L., and Archer, C.: Rise to modern levels of ocean oxygenation coincided with the Cambrian radiation of animals, Nat. Commun., 6, 7142, https://doi.org/10.1038/ncomms8142, 2015.
Chen, P., Yu, J., and Jin, Z.: An evaluation of benthic foraminiferal U
Chen, X., Robinson, S. A., Romaniello, S. J., and Anbar, A. D.: 238U
Chiu, C. F., Sweere, T. C., Clarkson, M. O., de Souza, G. F., Hennekam, R., and Vance, D.: Co-variation systematics of uranium and molybdenum isotopes reveal pathways for descent into euxinia in Mediterranean sapropels, Earth Planet. Sc. Lett., 585, 117527, https://doi.org/10.1016/j.epsl.2022.117527, 2022.
Choquel, C., Müter, D., Ni, S., Pirzamanbein, B., Charrieau, L. M., Hirose, K., Seto, Y., Schmiedl, G., and Filipsson, H. L.: 3D morphological variability in foraminifera unravel environmental changes in the Baltic Sea entrance over the last 200 years, Front. Earth Sci., 11, 1120170, https://doi.org/10.3389/feart.2023.1120170, 2023.
Clarkson, M. O., Hennekam, R., Sweere, T. C., Andersen, M. B., Reichart, G.-J., and Vance, D.: Carbonate associated uranium isotopes as a novel local redox indicator in oxidatively disturbed reducing sediments, Geochim. Cosmochim. Ac., 311, 12–28, https://doi.org/10.1016/j.gca.2021.07.025, 2021a.
Clarkson, M. O., Lenton, T. M., Andersen, M. B., Bagard, M.-L., Dickson, A. J., and Vance, D.: Upper limits on the extent of seafloor anoxia during the PETM from uranium isotopes, Nat. Commun., 12, 1–9, https://doi.org/10.1038/s41467-020-20486-5, 2021b.
Clement, B. G., Luther III, G. W., and Tebo, B. M.: Rapid, oxygen-dependent microbial Mn (II) oxidation kinetics at sub-micromolar oxygen concentrations in the Black Sea suboxic zone, Geochim. Cosmochim. Ac., 73, 1878–1889, https://doi.org/10.1016/j.gca.2008.12.023, 2009.
Cline, J. D. and Kaplan, I. R.: Isotopic fractionation of dissolved nitrate during denitrification in the eastern tropical north Pacific Ocean, Mar. Chem., 3, 271–299, https://doi.org/10.1016/0304-4203(75)90009-2, 1975.
Cole, D., Zhang, S., and PLanavsky, N.: A new estimate ofdetrital redox-sensitive metal concentrations and variability in fluxes to marine sediments, Geochim. Cosmochim. Ac., 215, 337–353, https://doi.org/10.1016/j.gca.2017.08.004, 2017.
Colley, S. and Thomson, J.: Recurrent uranium relocations in distal turbidites emplaced in pelagic conditions, Geochim. Cosmochim. Ac., 49, 2339–2348, https://doi.org/10.1016/0016-7037(85)90234-0, 1985.
Colley, S., Thomson, J., and Toole, J.: Uranium relocations and derivation of quasi-isochrons for a turbidite/pelagic sequence in the Northeast Atlantic, Geochim. Cosmochim. Ac., 53, 1223–1234, https://doi.org/10.1016/0016-7037(89)90058-6, 1989.
Colley, S., Thomson, J., Wilson, T. R. S., and Higgs, N. C.: Post-depositional migration of elements during diagenesis in brown clay and turbidite sequences in the North East Atlantic, Geochim. Cosmochim. Ac., 48, 1223–1235, https://doi.org/10.1016/0016-7037(84)90057-7, 1984.
Colodner, D., Edmond, J., and Boyle, E.: Rhenium in the Black Sea: comparison with molybdenum and uranium, Earth Planet. Sc. Lett., 131, 1–15, https://doi.org/10.1016/0012-821X(95)00010-A, 1995.
Conley, D. J., Carstensen, J., Aigars, J., Axe, P., Bonsdorff, E., Eremina, T., Haahti, B.-M., Humborg, C., Jonsson, P., Kotta, J., Lännegren, C., Larsson, U., Maximov, A., Medina, M. R., Lysiak-Pastuszak, E., Remeikaitė-Nikienė, N., Walve, J., Wilhelms, S., and Zillén, L.: Hypoxia Is Increasing in the Coastal Zone of the Baltic Sea, Environ. Sci. Technol., 45, 6777–6783, https://doi.org/10.1021/es201212r, 2011.
Connock, G. T., Owens, J. D., and Liu, X.-L.: Biotic induction and microbial ecological dynamics of Oceanic Anoxic Event 2, Commun. Earth Environ., 3, 136, https://doi.org/10.1038/s43247-022-00466-x, 2022.
Constandache, M., Yerly, F., and Spezzaferri, S.: Internal pore measurements on macroperforate planktonic Foraminifera as an alternative morphometric approach, Swiss J. Geosci., 106, 179–186, https://doi.org/10.1007/s00015-013-0134-8, 2013
Cook, M. K., Dial, A. R., and Hendy, I. L.: Iodine stability as a function of pH and its implications for simultaneous multi-element ICP-MS analysis of marine carbonates for paleoenvironmental reconstructions, Mar. Chem., 245, 104148, https://doi.org/10.1016/j.marchem.2022.104148, 2022.
Corfield, R. M. and Shackleton, N. J.: Productivity change as a control on planktonic foraminiferal evolution after the Cretaceous/Tertiary boundary, Hist. Biol., 1, 323–343, https://doi.org/10.1080/08912968809386482, 1988.
Corliss, B. H.: Microhabitats of benthic foraminifera within deep-sea sediments, Nature, 314, 435–438, https://doi.org/10.1038/314435a0, 1985.
Corliss, B. H.: Morphology and microhabitat preferences of benthic foraminifera from the northwest Atlantic Ocean, Mar. Micropaleontol., 17, 195–236, https://doi.org/10.1016/0377-8398(91)90014-W, 1991.
Corliss, B. H. and Emerson, S.: Distribution of Rose Bengal stained deep-sea benthic foraminifera from the Nova Scotian continental margin and Gulf of Maine, Deep-Sea Res., 37, 381–400, https://doi.org/10.1016/0198-0149(90)90015-N, 1990.
Corliss, B. H., Sun, X., Brown, C. W., and Showers, W. J.: Influence of seasonal primary productivity on δ13C of North Atlantic deep-sea benthic foraminifera, Deep-Sea Res. Pt. I, 53, 740–746, https://doi.org/10.1016/j.dsr.2006.01.006, 2006.
Costa, K. M., Anderson, R. F., McManus, J. F., Winckler, G., Middleton, J. L., Langmuir, C. H.: Trace element (Mn, Zn, Ni, V) and authigenic uranium (aU) geochemistry reveal sedimentary redox history on the Juan de Fuca Ridge, North Pacific Ocean, Geochim. Cosmochim. Ac., 236, 79–98, https://doi.org/10.1016/j.gca.2018.02.016, 2018.
Costa, K. M., Nielsen, S. G., Wang, Y., Lu, W., Hines, S. K., Jacobel, A. W., and Oppo, D. W.: Marine sedimentary uranium to barium ratios as a potential quantitative proxy for Pleistocene bottom water oxygen concentrations, Geochim. Cosmochim. Ac., 343, 1–16, https://doi.org/10.1016/j.gca.2022.12.022, 2023.
Cowie, G., Mowbray, S., Kurian, S., Sarkar, A., White, C., Anderson, A., Vergnaud, B., Johnstone, G., Brear, S., Woulds, C., Naqvi, S. W. A., and Kitazato, H.: Comparative organic geochemistry of Indian margin (Arabian Sea) sediments: estuary to continental slope, Biogeosciences, 11, 6683–6696, https://doi.org/10.5194/bg-11-6683-2014, 2014.
Coxall, H. K., Pearson, P. N., Wilson, P. A., and Sexton, P. F.: Iterative evolution of digitate planktonic foraminifera, Paleobiology, 33, 495–516, https://doi.org/10.1666/06034.1, 2007.
Crusius, J., Calvert, S., Pedersen, T., and Sage, D.: Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition, Earth Planet. Sc. Lett., 145, 65–78, https://doi.org/10.1016/S0012-821X(96)00204-X, 1996.
Crusius, J. and Thomson, J.: Comparative behaviour of authigenic Re, U and Mo during reoxidation and subsequent long-term burial in marine sediments, Geochim. Cosmochim. Ac., 64, 2233–2242, https://doi.org/10.1016/S0016-7037(99)00433-0, 2000.
Croudace, I. W., Rindby, A., and Rothwell, R. G.: ITRAX: description and evaluation of a new multi-function X-ray core scanner, Geol. Soc. Lond. Spec. Publ., 267, 51–63, https://doi.org/10.1144/GSL.SP.2006.267.01.04, 2006.
Croudace, I. W. and Rothwell, R. G. (Eds.). Micro-XRF Studies of Sediment Cores: Applications of a non-destructive tool for the environmental sciences, Vol. 17, p. 668, Dordrecht, Springer, https://doi.org/10.1007/978-94-017-9849-5, 2015.
Croudace, I. W., Löwemark, L., Tjallingii, R., and Zolitschka, B.: Current perspectives on the capabilities of high resolution XRF core scanners, Quaternary Int., 514, 5–15, https://doi.org/10.1016/j.quaint.2019.04.002, 2019.
Curry, W. B. and Oppo, D. W.: Glacial water mass geometry and the distribution of δ13C of ΣCO2 in the western Atlantic Ocean, Paleocean. Paleoclim., 20, PA1017, https://doi.org/10.1029/2004PA001021, 2005.
Cutter, G. A., Moffett, J. W., Nielsdóttir, M. C., and Sanial, V.: Multiple oxidation state trace elements in suboxic waters off Peru: In situ redox processes and advective/diffusive horizontal transport, Mar. Chem., 201, 77–89, https://doi.org/10.1016/j.marchem.2018.01.003, 2018.
Dahl, T. W., Anbar, A. D., Gordon, G. W., Rosing, M. T., Frei, R., and Canfield, D. E.: The behavior of molybdenum and its isotopes across the chemocline and in the sediments of sulfidic Lake Cadagno, Switzerland, Geochim. Cosmochim. Ac., 74, 144–163, https://doi.org/10.1016/j.gca.2009.09.018, 2010a.
Dahl, T. W., Chappaz, A., Hoek, J., McCenzie, C. J., Svane, S., and Canfield, D. E.: Evidence of molybdenum association with particulate organic matter under sulfidic conditions, Geobiology, 15, 311–323, https://doi.org/10.1111/gbi.12220, 2017.
Dahl, T. W., Hammarlund, E. U., Rasmussen, C. M. Ø., Bond, D. P., and Canfield, D. E.: Sulfidic anoxia in the oceans during the Late Ordovician mass extinctions–insights from molybdenum and uranium isotopic global redox proxies, Earth-Sci. Rev., 220, 103748, https://doi.org/10.1016/j.earscirev.2021.103748, 2021.
Davis, C.V., Myhre, S. E., and Hill, T. M.: Benthic foraminiferal shell weight: Deglacial species-specific responses from the Santa Barbara Basin, Mar. Micropaleontol., 124, 45–53, https://doi.org/10.1016/j.marmicro.2016.02.002, 2016.
Davis, C. V., Wishner, K., Renema, W., and Hull, P. M.: Vertical distribution of planktic foraminifera through an oxygen minimum zone: how assemblages and test morphology reflect oxygen concentrations, Biogeosciences, 18, 977–992, https://doi.org/10.5194/bg-18-977-2021, 2021.
Davis, C. V., Doherty, S., Fehrenbacker, J., and Wishner, K.: Trace element composition of modern planktic foraminifera from an oxygen minimum zone: potential proxies for an enigmatic environment, Front. Mar. Sci., 10, 1145756, https://doi.org/10.3389/fmars.2023.1145756, 2023a.
Davis, C. V., Sibert, E. C., Jacobs, P. H., Burls, N., and Hull, P. M.: Intermediate water circulation drives distribution of Pliocene Oxygen Minimum Zones, Nat. Commun., 14, 40, https://doi.org/10.1038/s41467-022-35083-x, 2023b.
Debenay, J. -P. (Ed.): A Guide to 1,000 Foraminifera from Southwestern Pacific New Caledonia, IRD Éditions, Publications scientifiques du Muséum, Muséum national d'Histoire naturelle, Paris, France, 384 pp., ISBN 978-2-7099-1729-2, 2012.
Deflandre, B., Mucci, A., Gagné, J.-P., Guignard, C., and Sundby, B.: Early diagenetic processes in coastal marine sediments disturbed by a catastrophic sedimentation event, Geochim. Cosmochim. Ac., 66, 2547–2558, https://doi.org/10.1016/S0016-7037(02)00861-X, 2002
De Lange, G. J.: Early Diagenetic Reactions in Interbedded Pelagic and Turbiditic Sediments in the Nares-Abyssal-Plain (Western North- Atlantic) Consequences for the Composition of Sediment and Interstitial Water, Geochim. Cosmochim. Ac., 50, 2543–2561, https://doi.org/10.1016/0016-7037(86)90209-7, 1986.
De Lange, G. J., Thomson, J., Reitz, A., Slomp, C. P., Principato, M. S., Erba, E., and Corselli, C.: Synchronous basin-wide formation and redox-controlled preservation of a Mediterranean sapropel, Nat. Geosci., 1, 606–610, https://doi.org/10.1038/ngeo283, 2008.
Dellinger, M., Hilton, R. G., Geoff M. and Nowell, G. M.: Fractionation of rhenium isotopes in the Mackenzie River basin during oxidative weathering, Earth Planet. Sc. Lett., 573, 117131, https://doi.org/10.1016/j.epsl.2021.117131, 2021.
de Moel, H., Ganssen, G. M., Peeters, F. J. C., Jung, S. J. A., Kroon, D., Brummer, G. J. A., and Zeebe, R. E.: Planktic foraminiferal shell thinning in the Arabian Sea due to anthropogenic ocean acidification?, Biogeosciences, 6, 1917–1925, https://doi.org/10.5194/bg-6-1917-2009, 2009.
Den Dulk, M., Reichart, G. J., Memon, G. M., Roelofs, E. M. P., Zachariasse, W. J., and Van der Zwaan, G. J.: Benthic foraminiferal response to variations in surface water productivity and oxygenation in the northern Arabian Sea, Mar. Micropaleontol., 35, 43–66, https://doi.org/10.1016/S0377-8398(98)00015-2, 1998.
De Nooijer, L. J., Sampedro, L. P., Jorissen, F. J., Pawlowski, J., Rosenthal, Y., Dissard, D., and Reichart, G. J.: 500 million years of foraminiferal calcification, Earth-Science Rev., 243, 104484, https://doi.org/10.1016/j.earscirev.2023.104484, 2023.
Detlef, H., Sosdian, S. M., Kender, S., Lear, C. H., and Hall, I. R.: Multi-elemental composition of authigenic carbonates in benthic foraminifera from the eastern Bering Sea continental margin (International Ocean Discovery Program Site U1343), Geochim. Cosmochim. Ac., 268, 1–21, https://doi.org/10.1016/j.gca.2019.09.025, 2020.
Deutsch, C., Brix, H., Ito, T., Frenzel, H., and Thompson, L.: Climate-forced variability of ocean hypoxia, Science, 333, 336–339, https://doi.org/10.1126/science.1202422, 2011.
Deutsch, C., Berelson, W., Thunell, R., Weber, T., Tems, C., McManus, J., Crusius, J., Ito, T., Baumgartner, T., Ferreira, V., Mey, J., and van Geen, A.: Centennial changes in North Pacific anoxia linked to tropical trade winds, Science, 345, 665–668, https://doi.org/10.1126/science.1252332, 2014.
Dias, B. B., Hart, M. B., Smart, C. W., and Hall-Spencer, J. M.: Modern seawater acidification: the response of foraminifera to high-CO2 conditions in the Mediterranean Sea, J. Geol. Soc. Lond., 167, 843–846, https://doi.org/10.1144/0016-76492010-050, 2010.
Diaz, R. J. and Rosenberg, R.: Spreading Dead Zones and Consequences for Marine Ecosystems, Science, 321, 926–929, https://doi.org/10.1126/science.1156401, 2008.
Dickson, A. J. and Cohen, A. S.: A molybdenum isotope record of Eocene Thermal Maximum 2: Implications for global ocean redox during the early Eocene, Paleocean. Paleoclim., 27, PA3230, https://doi.org/10.1029/2012PA002346, 2012.
Dickson, A. J., Jenkyns, H. C., Porcelli, D., van den Boorn, S., and Idiz, E.: Basin-scale controls on the molybdenum-isotope composition of seawater during Oceanic Anoxic Event 2 (Late Cretaceous), Geochim. Cosmochim. Ac., 178, 291–306, https://doi.org/10.1016/j.gca.2015.12.036, 2016.
Dickson, A. J.: A molybdenum-isotope perspective on Phanerozoic deoxygenation events, Nat. Geosci., 10, 721–726, https://doi.org/10.1038/ngeo3028, 2017.
Dickson, A. J., Hsieh, Y.-T., and Bryan, A.: The rhenium isotope composition of Atlantic Ocean seawater, Geochim. Cosmochim.Acta 287, 221–228, https://doi.org/10.1016/j.gca.2020.02.020, 2020.
Diz, P. and Francés, G.: Distribution of live benthic foraminifera in the Ría de Vigo (NW Spain), Mar. Micropaleontol., 66, 165–191, https://doi.org/10.1016/j.marmicro.2007.09.001, 2008.
Diz, P., Gonzalez-Guitian, V., Gonzalez-Villanueva, R., Ovejero, A., Hernandez-Almeida, I.: BENFEP, a quantitative database of BENthic Foraminifera from surface sediments of the Eastern Pacific, Earth Syst. Sci. Data, 15, 697–722, https://doi.org/10.5194/essd-15-697-2023, 2023.
Dorador, J., Rodríguez-Tovar, F. J., and Titschack, J.: Exploring computed tomography in ichnological analysis of cores from modern marine sediments, Sci. reports, 10, 201, https://doi.org/10.1038/s41598-019-57028-z, 2020.
Dubois, N., Kienast, M., Kienast, S., Normandeau, C., Calvert, S. E., Herbert, T. D., and Mix, A.: Millennial-scale variations in hydrography and biogeochemistry in the Eastern Equatorial Pacific over the last 100 kyr, Quaternary Sci. Rev., 30, 210–223, https://doi.org/10.1016/j.quascirev.2010.10.012, 2011.
Duijnstee, I. A. P., Ernst, S. R., and Van der Zwaan, G. J.: Effect of anoxia on the vertical migration of benthic foraminifera, Mar. Ecol. Progr. Ser., 246, 85–94, https://doi.org/10.3354/meps246085, 2003.
Dummann, W., Steinig, S., Hofmann, P., Lenz, M., Kusch, S., Flögel, S., Herrle, J. O., Hallmann, C., Rethemeyer, J., Kasper, H. U., and Wagner, T.: Driving mechanisms of organic carbon burial in the Early Cretaceous South Atlantic Cape Basin (DSDP Site 361), Clim. Past, 17, 469–490, https://doi.org/10.5194/cp-17-469-2021, 2021.
Dunk, R. M., Mills, R. A., and Jenkins, W. J.: A reevaluation of the oceanic uranium budget for the Holocene, Chem. Geol., 190, 45–67, https://doi.org/10.1016/S0009-2541(02)00110-9, 2002.
Duplessy, J. C., Shackleton, N. J., Matthews, R. K., Prell, W., Ruddiman, W. F., Caralp, M., and Hendy, C. H.: 13C record of benthic foraminifera in the last interglacial ocean: implications for the carbon cycle and the global deep water circulation, Quaternary Res., 21, 225–243, https://doi.org/10.1016/0033-5894(84)90099-1, 1984.
Egger, M., Riedinger, N., Mogollon, J. M., and Jørgensen, B. B.: Global diffusive fluxes of methane in marine sediments, Nat. Geosc., 11, 421–425, https://doi.org/10.1038/s41561-018-0122-8, 2018.
Eglinton, T. I. and Eglinton, G.: Molecular proxies for paleoclimatology, Earth Planet. Sc. Lett., 275, 1–16, https://doi.org/10.1016/j.epsl.2008.07.012, 2008.
Eglinton, T. I. and Repeta, D. J.: Organic matter in the contemporary ocean, in: Treatise on Geochemistry: The Oceans and Marine Geochemistry, edited by: Mottl, M. J. and Elderfield, H., Elsevier, Oxford, United Kingdom, 151–189, https://doi.org/10.1016/B978-0-08-095975-7.00606-9, 2014.
Eiler, J., Cesar, J., Chimiak, L., Dallas, B., Grice, K., Griep-Raming, J., Juchelka, D., Kitchen, N., Lloyd, M., Makarov, A., Robins, R., and Schwieters, J.: Analysis of molecular isotopic structures at high precision and accuracy by Orbitrap mass spectrometry, Int. J. Mass Spectrom., 422, 126–142, https://doi.org/10.1016/j.ijms.2017.10.002, 2017.
Elling, F. J., Könneke, M., Lipp, J. S., Becker, K. W., Gagen, E. J., and Hinrichs, K.-U.: Effects of growth phase on the membrane lipid composition of the thaumarchaeon Nitrosopumilus maritimus and their implications for archaeal lipid distributions in the marine environment, Geochim. Cosmochim. Ac., 141, 579–597, https://doi.org/10.1016/j.gca.2014.07.005, 2014.
Elling, F. J., Becker, K. W., Könneke, M., Schröder, J. M., Kellermann, M. Y., Thomm, M., and Hinrichs, K.-U.: Respiratory quinones in archaea: phylogenetic distribution and application as biomarkers in the marine environment, Envir. Microbiol., 18, 692–707, https://doi.org/10.1111/1462-2920.13086, 2016.
Elling, F. J., Könneke, M., Nicol, G. W., Stieglmeier, M., Bayer, B., Spieck, E., Torre, J. R. de la, Becker, K. W., Thomm, M., Prosser, J. I., Herndl, G. J., Schleper, C., and Hinrichs, K.-U.: Chemotaxonomic characterisation of the thaumarchaeal lipidome, Environ. Microbiol., 19, 2681–2700, https://doi.org/10.1111/1462-2920.13759, 2017.
Elling, F. J., Hemingway, J. D., Evans, T. W., Kharbush, J. J., Spieck, E., Summons, R. E., and Pearson, A.: Vitamin B12-dependent biosynthesis ties amplified 2-methylhopanoid production during oceanic anoxic events to nitrification, P. Natl. Acad. Sci. USA, 117, 32996–33004, https://doi.org/10.1073/pnas.2012357117, 2020.
Elling, F. J., Hemingway, J. D., Kharbush, J. J., Becker, K. W., Polik, C. A., and Pearson, A.: Linking diatom-diazotroph symbioses to nitrogen cycle perturbations and deep-water anoxia: Insights from Mediterranean sapropel events, Earth Planet. Sc. Lett., 571, 117110, https://doi.org/10.1016/j.epsl.2021.117110, 2021.
Elling, F. J., Evans, T. W., Nathan, V., Hemingway, J. D., Kharbush, J. J., Bayer, B., Spieck, E., Husain, F., Summons, R. E., and Pearson, A.: Marine and terrestrial nitrifying bacteria are sources of diverse bacteriohopanepolyols, Geobiology, 20, 399–420, https://doi.org/10.1111/gbi.12484, 2022.
Elvert, M., Suess, E., and Whiticar, M. J.: Anaerobic methane oxidation associated with marine gas hydrates: superlight C-isotopes from saturated and unsaturated C20 and C25 irregular isoprenoids, Naturwissenschaften, 86, 295–300, https://doi.org/10.1007/s001140050619, 1999.
Emerson, S. R. and Huested, S. S.: Ocean anoxia and the concentrations of molybdenum and vanadium in seawater, Mar. Chem., 34, 177–196, https://doi.org/10.1016/0304-4203(91)90002-E, 1991.
Endrizzi, F. and Rao, L.: Chemical speciation of uranium (VI) in marine environments: complexation of calcium and magnesium ions with [(UO2)(CO3)3]4− and the effect on the extraction of uranium from seawater, Chem–Eur. J., 20, 14499–14506, https://doi.org/10.1002/chem.201403262, 2014.
Enge, A. J., Wukovits, J., Wanek, W., Watzka, M., Witte, U. F., Hunter, W. R., and Heinz, P.: Carbon and nitrogen uptake of calcareous benthic foraminifera along a depth-related oxygen gradient in the OMZ of the Arabian Sea, Front. Microbiol., 7, 71, https://doi.org/10.3389/fmicb.2016.00071, 2016.
Erdem, Z., Schönfeld, J. Glock, N., Dengler, M., Mosch, T., Sommer, S., Elger, J., and Eisenhauer, A.: Peruvian sediments as recorders of an evolving hiatus for the last 22 thousand years, Quaternary Sci. Rev., 137, 1–14, https://doi.org/10.1016/j.quascirev.2016.01.029, 2016.
Erdem, Z. and Schönfeld, J.: Pleistocene to Holocene benthic foraminiferal assemblages from the Peruvian continental margin, Palaeontol. Electron., 20, 1–32, https://doi.org/10.26879/764, 2017.
Erdem, Z., Schönfeld, J., Rathburn, A. E., Pérez, M. E., Cardich, J., and Glock, N.: Bottom-water deoxygenation at the Peruvian margin during the last deglaciation recorded by benthic foraminifera, Biogeosciences, 17, 3165–3182, https://doi.org/10.5194/bg-17-3165-2020, 2020.
Erez, J.: The source of ions for biomineralization in foraminifera and their implications for paleoceanographic proxies, Revi. Mineral. Geochem., 54, 115–149, https://doi.org/10.2113/0540115, 2003.
Erickson, B. E. and Helz, G. R.: Molybdenum (VI) speciation in sulfidic waters: stability and lability of thiomolybdates, Geochim. Cosmochim. Ac., 64, 1149–1158, https://doi.org/10.1016/S0016-7037(99)00423-8, 2000.
Ettwig, K. F., Butler, M. K., Paslier, D. L., Pelletier, E., Mangenot, S., Kuypers, M. M. M., Schreiber, F., Dutilh, B. E., Zedelius, J., Beer, D. de, Gloerich, J., Wessels, H. J. C. T., Alen, T. van, Luesken, F., Wu, M. L., Pas-Schoonen, K. T. van de, Camp, H. J. M. O. den, Janssen-Megens, E. M., Francoijs, K.-J., Stunnenberg, H., Weissenbach, J., Jetten, M. S. M., and Strous, M.: Nitrite-driven anaerobic methane oxidation by oxygenic bacteria, Nature, 464, 543–548, https://doi.org/10.1038/nature08883, 2010.
Farrell, J. W., Pedersen, T. F., Calvert, S. E., and Nielsen, B.: Glacial-interglacial changes in nutrient utilization in the equatorial Pacific Ocean, Nature, 377, 514–517, https://doi.org/10.1038/377514a0, 1995.
Fatela, F. and Taborda, R.: Confidence limits of species proportions in microfossil assemblages, Mar. Micropaleontol.,45, 169–174, https://doi.org/10.1016/S0377-8398(02)00021-X, 2002.
Ferry, J. G. and Lessner, D. J.: Methanogenesis in marine sediments, Ann. NY Acad. Sci., 1125, 147–157, https://doi.org/10.1196/annals.1419.007, 2008.
Finney, B. P., Lyle, M. W., and Heath, G. R.: Sedimentation at MANOP Site H (eastern equatorial Pacific) over the past 400,000 years: climatically induced redox variations and their effects on transition metal cycling, Paleocean. Paleoclim., 3, 169–189, https://doi.org/10.1029/PA003i002p00169, 1988.
Flegal, A. R., Sañudo-Wilhelmy, S. A., and Scelfo, G. M.: Silver in the Eastern Atlantic Ocean, Mar. Chem., 49, 315–320, https://doi.org/10.1016/0304-4203(95)00021-I, 1995.
Fontanier, C., Jorissen, F.J., Licari, L., Alexandre, A., Anschutz, P., and Carbonel, P.: Live benthic foraminiferal faunas from the Bay of Biscay: faunal density, composition, and microhabitats, Deep-Sea Res. Pt. I, 49, 751–785, https://doi.org/10.1016/S0967-0637(01)00078-4, 2002.
Fontanier, C., Jorissen, F. J., Chaillou, G., David, C., Anschutz, P., and Lafon, V.: Seasonal and interannual variability of benthic foraminiferal faunas at 550 m depth in the Bay of Biscay, Deep-Sea Res. Pt. I, 50, 457–494, https://doi.org/10.1016/S0967-0637(02)00167-X, 2003.
Fontanier, C., Jorissen, F. J., Chaillou, G., Anschutz, P., Grémare, A., and Griveaud, C.: Live foraminiferal faunas from a 2800 m deep lower canyon station from the Bay of Biscay: faunal response to focusing of refractory organic matter, Deep-Sea Res. Pt. I, 52, 1189–1227, https://doi.org/10.1016/j.dsr.2005.01.006, 2005.
Fontanier, C., Koho, K. A., Goñi-Urriza, M. S., Deflandre, B., Galaup, S., Ivanovsky, A., Gayer, N., Dennielou, B.,Gremare, A., Bichon, S., Gassie, C., Anschutz, P., Duran, and Reichart, G. J.: Benthic foraminifera from the deep-water Niger delta (Gulf of Guinea): Assessing present-day and past activity of hydrate pockmarks, Deep-Sea Res. Pt. I, 94, 87–106, https://doi.org/10.1016/j.dsr.2014.08.011, 2014.
Fortin, D., Francus, P., Gebhardy, A.C., Hahn, A., Kliem, P., Lisé-Pronovost, A., Roychowdhury, R., Labrie, J., St-Onge, J., and The PASADO Team: Destructive and non-destructive density determination: method comparison and evaluation from the Laguna Potrok Aike sedimentary record, Quaternary Sci. Rev. 71, 147–153, https://doi.org/10.1016/j.quascirev.2012.08.024, 2013
Fox, L., Stukins, S., Hill, T., and Miller, C.G.: Quantifying the Effect of Anthropogenic Climate Change on Calcifying Plankton, Sci. Rep., 10, 1620, https://doi.org/10.1038/s41598-020-58501-w, 2020.
Franco-Fraguas, P., Badaraco Costa, K., and de Lima Toledo, F.: Stable isotope/test size relationship in Cibicidoides wuellerstorfi, Braz. J. Oceanogr., 59, 2870291, https://doi.org/10.1590/S1679-87592011000300010, 2011.
Francois, R.: A Study of Sulphur Enrichment in the Humic Fraction of Marine Sediments during Early Diagenesis, Geochim. Cosmochim. Ac., 51, 17–27, https://doi.org/10.1016/0016-7037(87)90003-2, 1987.
Frei, R., Gaucher, C., Døssing, L., and Sial, A.: Chromium isotopes in carbonates – a tracer for climate change and for reconstructing the redox state of ancient seawater, Earth Planet. Sc. Lett., 312, 114–125, https://doi.org/10.1016/j.epsl.2011.10.009, 2011.
Freitas, T. R., Bacalhau, E., and Bonetti, C.: ForImage: Foraminiferal Image Analysis and Test Measurement, R Package Version 0.1.0., https://doi.org/10.32614/CRAN.package.forImage, 2021.
French, K. L., Rocher, D., Zumberge, J. E., and Summons, R. E.: Assessing the distribution of sedimentary C40 carotenoids through time, Geobiology, 13, 139–151, https://doi.org/10.1111/gbi.12126, 2015.
Fritz-Endres, T. and Fehrenbacher, J.: Preferential Loss of High Trace Element Bearing Inner Calcite in Foraminifera During Physical and Chemical Cleaning, Geochem. Geophy. Geosy., 22, e2020GC009419, https://doi.org/10.1029/2020GC009419, 2021.
Froelich P. N., Klinkhammer G. P., Bender M. L., Luedtke N. A., Heath G. R., Cullen D., Dauphin P., Hammond D., Hartman B., and Maynard V.: Early oxidation of organic matter in pelagic sediments of the eastern equatorial Atlantic: suboxic diagenesis, Geochim. Cosmochim. Ac., 43, 1075–1090, https://doi.org/10.1016/0016-7037(79)90095-4, 1979.
Freund, C., Wishard, A., Brenner, R., Sobel, M., Mizelle, J., Kim, A., Meyer, D. A., and Morford, J. L.: The effect of a thiol-containing organic molecule on molybdenum adsorption onto pyrite, Geochim. Cosmochim. Ac., 174, 222–235, https://doi.org/10.1016/j.gca.2015.11.015, 2016.
Fyke, J. G., D'Orgeville, M., and Weaver, A. J.: Drake Passage and Central American Seaway controls on the distribution of the oceanic carbon reservoir, Glob. Planet. Change 128, 72–83, https://doi.org/10.1016/j.gloplacha.2015.02.011, 2015
Galbraith, E. D., Kienast, M., Pedersen, T. F., and Calvert, S. E.: Glacial-interglacial modulation of the marine nitrogen cycle by high-latitude O2 supply to the global thermocline, Paleocean. Paleoclim., 19, PA4007, https://doi.org/10.1029/2003PA001000, 2004.
Galbraith, E. D., Kienast, M., Jaccard, S. L., Pedersen, T. F., Brunelle, B. G., Sigman, D. M., and Kiefer, T.: Consistent relationship between global climate and surface nitrate utilization in the western subarctic Pacific throughout the last 500 ka, Paleocean. Paleoclim., 23, PA2212, https://doi.org/10.1029/2007PA001518, 2008.
Galbraith, E. G., Kienast, M., and The NICOPP working group members: The acceleration of oceanic denitrification during deglacial warming, Nat. Geosc., 76, 579–584, https://doi.org/10.1038/ngeo1832, 2013.
Gambacorta, A., Pagnotta, E., Romano, I., Sodano, G., and Trincone, A.: Heterocyst glycolipids from nitrogen-fixing cyanobacteria other than Nostocaceae, Phytochemistry, 48, 801–805, https://doi.org/10.1016/S0031-9422(97)00954-0, 1998.
Ganeshram, R. S., Pedersen, T. F., Calvert, S. E., and Murray, J. W.: Large changes in oceanic nutrient inventories from glacial to interglacial periods, Nature, 376, 755–758, https://doi.org/10.1038/376755a0, 1995.
Geslin, E., Heinz, P., Jorissen, F., and Hemleben, C.: Migratory responses of deep-sea benthic foraminifera to variable oxygen conditions: laboratory investigations, Mar. Micropaleontol., 53, 227–243, https://doi.org/10.1016/j.marmicro.2004.05.010, 2004.
Geslin, E., Risgaard-Petersen, N., Lombard, F., Metzger, E., Langlet, D., and Jorissen, F.: Oxygen respiration rates of benthic foraminifera as measured with oxygen microsensors, J. Exp. Mar. Biol. Ecol., 396, 108–114, https://doi.org/10.1016/j.jembe.2010.10.011, 2011.
Geslin, E., Barras, C., Langlet, D., Nardelli, M. P., Kim, J. H., Bonnin, J., Metzger, E., and Jorissen, F. J.: Survival, reproduction and calcification of three benthic foraminiferal species in response to experimentally induced hypoxia, in: Approaches to Study Living Foraminifera, edited by: Kitazato, H. M., and Bernhard, J., Springer, Tokyo, 163–193, https://doi.org/10.1007/978-4-431-54388-6_10, 2014.
Giordano, L., Ferraro, L., Salvatore, M., Oscurato, S. L., and Maddalena, P.: Morphometric analysis on benthic foraminifera through atomic force microscopy, Mar. Micropaleontol, 153, 101775, https://doi.org/10.1016/j.marmicro.2019.101775, 2019.
Glock, N., Eisenhauer, A., Milker, Y., Liebetrau, V., Schönfeld, J., Mallon, J., Sommer, S., and Hensen, C.: Environmental influences on the pore density of Bolivina spissa (Cushman), J. Foraminifer. Res., 41, 22–32, https://doi.org/10.2113/gsjfr.41.1.22, 2011.
Glock, N., Eisenhauer, A., Liebetrau, V., Wiedenbeck, M., Hensen, C., and Nehrke, G.: EMP and SIMS studies on Mn
Glock, N., Schönfeld, J., and Mallon, J.: The Functionality of Pores in Benthic Foraminifera in View of Bottom Water Oxygenation: A Review, in: ANOXIA: Evidence for Eukaryote Survival and Paleontological Strategies, Cellular Origin, Life in Extreme Habitats and Astrobiology, Vol. 21, edited by: Altenbach, A. V., Bernhard, J. M., and Seckbach, J., Springer, Dordrecht, Germany, 540–556, https://doi.org/10.1007/978-94-007-1896-8_28, 2012b.
Glock, N., Liebetrau, V., and Eisenhauer, A.: I
Glock, N., Liebetrau, V., Eisenhauer, A., and Rocholl, A.: High resolution I
Glock, N., Erdem, Z., Wallmann, K., Somes, C. J., Liebetrau, V., Schönfeld, J., Gorb, S., and Eisenhauer, A.: Coupling of oceanic carbon and nitrogen facilitates spatially resolved quantitative reconstruction of nitrate inventories, Nat. Commun., 9, 1217, https://doi.org/10.1038/s41467-018-03647-5, 2018.
Glock, N., Liebetrau, V., Vogts, A., and Eisenhauer, A.: Organic heterogeneities in foraminiferal calcite traced through the distribution of N, S, and I measured with nanoSIMS: a new challenge for element-ratio-based paleoproxies?, Front. Earth Sci., 7, 175, https://doi.org/10.3389/feart.2019.00175, 2019a.
Glock, N., Roy, A. S., Romero, D., Wein, T., Weissenbach, J., Revsbech, N. P., Høgslund, S., Clemens, D., Sommer, S., and Dagan, T.: Metabolic preference of nitrate over oxygen as an electron acceptor in foraminifera from the Peruvian oxygen minimum zone, P. Natl. Acad. Sci. USA, 116, 2860–2865, https://doi.org/10.1073/pnas.1813887116, 2019b.
Glock, N., Erdem, Z., and Schönfeld, J.: The Peruvian oxygen minimum zone was similar in extent but weaker during the Last Glacial Maximum than Late Holocene, Commun. Earth Environ., 3, 307, https://doi.org/10.1038/s43247-022-00635-y, 2022.
Glock, N.: Benthic foraminifera and gromiids from oxygen-depleted environments – survival strategies, biogeochemistry and trophic interactions, Biogeosciences, 20, 3423–3447, https://doi.org/10.5194/bg-20-3423-2023, 2023.
Glud, R. N., Thamdrup, B., Stahl, H., Wenzhoefer, F., Glud, A., Nomaki, H., Oguri, K., Revsbech, N. P., and Kitazato, H.: Nitrogen cycling in a deep ocean margin sediment (Sagami Bay, Japan), Limnol. Oceanogr., 54, 723–734, https://doi.org/10.4319/lo.2009.54.3.0723, 2009.
Goineau, A. and Gooday, A. J.: Diversity and spatial patterns of foraminiferal assemblages in the eastern Clarion–Clipperton zone (abyssal eastern equatorial Pacific), Deep-Sea Res. Pt. I, 149, 103036, https://doi.org/10.1016/j.dsr.2019.04.014, 2019.
Goldschmidt, V. M. (Ed.): Geochemistry, The Clarendon Press, Oxford, 730 pp., ISBN: 0198512104, 1954.
Gomaa, F., Utter, D. R., Powers, C., Beaudoin, D. J., Edgcomb, V. P., Filipsson, H. L., Hansel, C. M., Wankel, S., Zhang, Y., and Bernhard, J. M.: Multiple integrated metabolic strategies allow foraminiferan protists to thrive in anoxic marine sediments, Sci. Adv., 7, eabf1586, https://doi.org/10.1126/sciadv.abf1586, 2021.
Gooday, A. J.: Benthic foraminifera (protista) as tools in deep-water palaeoceanography: environmental influences on faunal characteristics, Adv. Mar. Biol., 46, 1–90, https://doi.org/10.1016/S0065-2881(03)46002-1, 2003.
Gooday, A. J. and Rathburn, A. E.: Temporal variability in living deep-sea benthic foraminifera: a review, Earth-Sci. Rev., 46, 187–212, https://doi.org/10.1016/S0012-8252(99)00010-0, 1999.
Gooday, A. J., Bernhard, J. M., Levin, L. A., and Suhr, S. B.: Foraminifera in the Arabian Sea oxygen minimum zone and other oxygen-deficient settings taxonomic composition, diversity, and relation to metazoan faunas, Deep-Sea Res. Pt. II, 47, 25–54, https://doi.org/10.1016/S0967-0645(99)00099-5, 2000.
Gooday, A. J. and Hughes, J. A.: Foraminifera associated with phytodetritus deposits at a bathyal site in the northern Rockall Trough (NE Atlantic): seasonal contrasts and a comparison of stained and dead assemblages, Mar. Micropaleontol., 46, 83–110, https://doi.org/10.1016/S0377-8398(02)00050-6, 2002.
Gooday, A. J., Jorissen, F., Levin, L. A., Middelburg, J. J., Naqvi, S. W. A., Rabalais, N. N., Scranton, M., and Zhang, J.: Historical records of coastal eutrophication-induced hypoxia, Biogeosciences, 6, 1707–1745, https://doi.org/10.5194/bg-6-1707-2009, 2009.
Goossens, H., De Leeuw, J. W., Schenck, P. A., and Brassell, S. C.: Tocopherols as likely precursors of pristane in ancient sediments and crude oils, Nature, 312, 440–442, https://doi.org/10.1038/312440a0, 1984.
Gordon, G., Lyons, T., Arnold, G., Roe, J., Sageman, B., and Anbar, A.: When do black shales tell molybdenum isotope tales?, Geology, 37, 535–538, https://doi.org/10.1130/G25186A.1, 2009.
Görög, A., Szinger, B., Tóth, E., and Viszkok, J.: Methodology of the micro-computer tomography on foraminifera, Palaeontol. Electron., 15, 1–15, https://doi.org/10.26879/261, 2012.
Gottschalk, J., Skinner, L. C., Lippold, J., Vogel, H., Frank, N., Jaccard, S. L. and Waelbroeck, C.: Biological and physical controls in the Southern Ocean on past millennial-scale atmospheric CO2 changes, Nat. Commun., 7, 11539, https://doi.org/10.1038/ncomms11539, 2016a.
Gottschalk, J., Riveiros, N. V., Waelbroeck, C., Skinner, L. C., Michel, E., Duplessy, J.-C., Hodell, D. A., and Mackensen, A.: Carbon isotope offsets between species of the genus Cibicides (Cibicidoides) in the glacial sub-Antarctic Atlantic Ocean, Paleocean. Paleoclim., 31, 1583–1602, https://doi.org/10.1002/2016PA003029, 2016b.
Gottschalk, J., Skinner, L. C., Jaccard, S. L., Menviel, L., Nehrbass-Ahles, C., and Waelbroeck, C.: Southern Ocean link between changes in atmospheric CO2 levels and northern-hemisphere climate anomalies during the last two glacial periods, Quaternary Sci. Rev., 230, 106067, https://doi.org/10.1016/j.quascirev.2019.106067, 2020a.
Gottschalk, J., Michel, E., Thöle, L. M., Studer, A. S., Hasenfratz, A. P., Schmid, N., Butzin, M., Mazaud, A., Martínez-García, A., Szidat, S., and Jaccard, S. L.: Glacial heterogeneity in Southern Ocean carbon storage abated by fast South Indian deglacial carbon release, Nat. Commun., 11, 6192, https://doi.org/10.1038/s41467-020-20034-1, 2020b.
Govindankutty-Menon, A., Davis, C. V., Nürnberg, D., Nomaki, H., Salonen, I., Schmiedl, G., and Glock, N.: A deep-learning automated image recognition method for measuring pore patterns in closely related bolivinids and calibration for quantitative nitrate paleo-reconstructions, Sci. Rep., 13, 19628, https://doi.org/10.1038/s41598-023-46605-y, 2023.
Granger, J., Sigman, D. M., Needoba, J. A., and Harrison, P. J.: Coupled nitrogen and oxygen isotope fractionation of nitrate during assimilation by cultures of marine phytoplankton, Limnol. Oceanogr., 49, 1763–1773, https://doi.org/10.4319/lo.2004.49.5.1763, 2004.
Greaves, M., Caillon, N., Rebaubier, H., Bartoli, G., Bohaty, S., Cacho, I., Clarke, L., Cooper, M., Daunt, C., Delaney, M., DeMenocal, P., Dutton, A., Eggins, S., Elderfield, H., Garbe-Schoenberg, D., Goddard, E., Green, D., Groeneveld, J., Hastings, D., Hathorne, E., Kimoto, K., Klinkhammer, G., Labeyrie, L., Lea, D. W., Marchitto, T., Martínez-Botí, M. A., Mortyn, P. G., Ni, Y., Nuernberg, D., Paradis, G., Pena, L., Quinn, T., Rosenthal, Y., Russell, A., Sagawa, T., Sosdian, S., Stott, L., Tachikawa, K., Tappa, E., Thunell, R., and Wilson P. A.: Interlaboratory comparison study of calibration standards for foraminiferal Mg
Grice, K., Gibbison, R., Atkinson, J. E., Schwark, L., Eckardt, C. B., and Maxwell, J. R.: Maleimides (1H-pyrrole-2,5-diones) as molecular indicators of anoxygenic photosynthesis in ancient water columns, Geochim. Cosmochim. Ac., 60, 3913–3924, https://doi.org/10.1016/0016-7037(96)00199-8, 1996.
Grigorov, I., Pearce, R. B., and Kemp, A. E. S.: Southern Ocean laminated diatom ooze: Mat deposits and potential for palaeo-flux studies, ODP Leg 177, Site 1093, Deep-Sea Res. Pt. II, 49, 3391–3407, https://doi.org/10.1016/S0967-0645(02)00089-9, 2002.
Groeneveld, J. and Filipsson, H. L.: Mg
Groeneveld, J., Filipsson, H. L., Austin, W. E., Darling, K., McCarthy, D., Quintana Krupinski, N. B., Bird, C., and Schweizer, M.: Assessing proxy signatures of temperature, salinity, and hypoxia in the Baltic Sea through foraminifera-based geochemistry and faunal assemblages, J. Micropalaeontol., 37, 403–429, https://doi.org/10.5194/jm-37-403-2018, 2018.
Gruber, N., Keeling, C. D., Bacastow, R. B., Guenther, P. R., Lueker, T. J., Wahlen, M., Meijer, H. A., Mook, W. G., and Stocker, T. F.: Spatiotemporal patterns of carbon-13 in the global surface oceans and the oceanic Suess effect, Global Biogeochem. Cy., 13, 307–335, https://doi.org/10.1029/1999GB900019, 1999.
Gueguen, B., Reinhard, C. T., Algeo, T. J., Peterson, L. C., Nielsen, S. G., Wang, X., Rowe, H., and Planavsky, N. J.: The chromium isotope composition of reducing and oxic marine sediments, Geochim. Cosmochim. Ac., 184, 1–19, https://doi.org/10.1016/j.gca.2016.04.004, 2016.
Gueneli, N., McKenna, A. M., Ohkouchi, N., Boreham, C. J., Beghin, J., Javaux, E. J., and Brocks, J. J.: 1.1-billion-year-old porphyrins establish a marine ecosystem dominated by bacterial primary producers, P. Natl. Acad. Sci. USA, 115, E6978–E6986, https://doi.org/10.1073/pnas.1803866115, 2018.
Guerrero-Cruz, S., Vaksmaa, A., Horn, M. A., Niemann, H., Pijuan, M., and Ho, A.: Methanotrophs: Discoveries, environmental relevance, and a perspective on current and future applications, Front. Microbiol., 12, 678057, https://doi.org/10.3389/fmicb.2021.678057, 2021.
Gulev, S. K., Thorne, P. W., Ahn, J., Dentener, F. J., Domingues, C. M., Gerland, S., Gong, D., Kaufman, D. S., Nnamchi, H. C., Quaas, J., Rivera, J. A., Sathyendranath, S., Smith, S. L., Trewin, B., von Shuckmann, K., and Vose, R. S.: Changing State of the Climate System, in: Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Masson-Delmotte, V., Zhai, P., Pirani, A., Connors, S. L., Péan, C., Berger, S., Caud, N., Chen, Y., Goldfarb, L., Gomis, M. I., Huang, M., Leitzell, K., Lonnoy, E., Matthews, J. B. R., Maycock, T. K., Waterfield, T., Yelekçi, O., Yu, R., and Zhou, B., Cambridge University Press, https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_Chapter_02.pdf (last access: 21 March 2022), 2021.
Guo, X., Xu, B., Burnett, W. C., Yu, Z., Yang, S., Huang, X., Wang, F., Nan, H., Yao, P., and Sun, F.: A potential proxy for seasonal hypoxia: LA-ICP-MS Mn
Gupta, B. K. S. and Machain-Castillo, M. L.: Benthic foraminifera in oxygen-poor habitats, Mar. Micropaleontol., 20, 183–201, https://doi.org/10.1016/0377-8398(93)90032-S, 1993.
Gutiérrez, D., Sifeddine, A., Field, D. B., Ortlieb, L., Vargas, G., Chávez, F. P., Velazco, F., Ferreira, V., Tapia, P., Salvatteci, R., Boucher, H., Morales, M. C., Valdés, J., Reyss, J.-L., Campusano, A., Boussafir, M., Mandeng-Yogo, M., García, M., and Baumgartner, T.: Rapid reorganization in ocean biogeochemistry off Peru towards the end of the Little Ice Age, Biogeosciences, 6, 835–848, https://doi.org/10.5194/bg-6-835-2009, 2009.
Hain, M. P., Sigman, D. M., and Haug, G. H.: Carbon dioxide effects of Antarctic stratification, North Atlantic Intermediate Water formation, and subantarctic nutrient drawdown during the last ice age: Diagnosis and synthesis in a geochemical box model, Glob. Biogeochem. Cy., 24, GB4023, https://doi.org/10.1029/2010GB003790, 2010.
Harayama, T. and Riezman, H.: Understanding the diversity of membrane lipid composition, Nat. Rev. Mol. Cell. Biol., 19, 281–296, https://doi.org/10.1038/nrm.2017.138, 2018.
Hardisty, D. S., Lu, Z., Planavsky, N. J., Bekker, A., Philippot, P., Zhou, X., and Lyons, T. W.: An iodine record of Paleoproterozoic surface ocean oxygenation, Geology, 42, 619–622, https://doi.org/10.1130/G35439.1, 2014.
Hardisty, D. S., Lu, Z., Bekker, A., Diamond, C. W., Gill, B. C., Jiang, G., Kah, L. C., Knoll, A. H., Loyd, S. J., Osburn, M. R., and Planavsky, N. J.: Perspectives on Proterozoic surface ocean redox from iodine contents in ancient and recent carbonate, Earth Planet. Sc. Lett., 463, 159–170, https://doi.org/10.1016/j.epsl.2017.01.032, 2017.
Hardisty, D. S., Lyons, T. W., Riedinger, N., Isson, T. T., Owens, J. D., Aller, R. C., Rye, D. M., Planavsky, N. J., Reinhard, C. T., Gill, B. C., Masterson, A. L., Asael, D., and Johnston, D. T.: An evaluation of sedimentary molybdenum and iron as proxies for pore fluid paleoredox conditions, Am. J. Sci., 318, 527–556, https://doi.org/10.2475/05.2018.04, 2018.
Hardisty, D. S., Horner, T. J., Evans, N., Moriyasu, R., Babbin, A. R., Wankel, S. D., Moffett, J. W., and Nielsen, S. G.: Limited iodate reduction in shipboard seawater incubations from the Eastern Tropical North Pacific oxygen deficient zone, Earth Planet. Sc. Lett., 554, 116676, https://doi.org/10.1016/j.epsl.2020.116676, 2021a.
Hardisty, D. S., Riedinger, N., Planavsky, N. J., Asael, D., Bates, S. M., and Lyons, T. W.: Holocene spatiotemporal redox variations in the southern Baltic Sea, Front. Earth Sci., 9, 344, https://doi.org/10.3389/feart.2021.671401, 2021b.
Harmann, R. A.: Distribution of foraminifera in the Santa Barbara Basin, California, Micropaleontology, 10, 81–96, https://doi.org/10.2307/1484628, 1964.
Harris, P. G., Zhao, M., Rosell-Melé, A., Tiedemann, R., Sarnthein, M., and Maxwell, J. R.: Chlorin accumulation rate as a proxy for Quaternary marine primary productivity, Nature, 383, 63–65, https://doi.org/10.1038/383063a0, 1996.
Hartnett, H. E., Keil, R. G., Hedges, J. I., and Devol, A. H.: Influence of oxygen exposure time on organic carbon preservation in continental margin sediments, Nature, 391, 572–574, https://doi.org/10.1038/35351, 1998.
Hashim, M. S., Burke, J. E., Hardisty, D. S., and Kaczmarek, S. E.: Iodine incorporation into dolomite: Experimental constraints and implications for the iodine redox proxy and Proterozoic Ocean, Geochim. Cosmochim. Ac., 338, 365–381, https://doi.org/10.1016/j.gca.2022.10.027, 2022.
Hastings, D. W., Emerson, S. R., and Mix, A. C.: Vanadium in foraminiferal calcite as a tracer for changes in the areal extent of reducing sediments, Paleocean. Paleoclim., 11, 665–678, https://doi.org/10.1029/96PA01985, 1996.
Hayes, C. T., Anderson, R. F., Cheng, H., Conway, T. M., Edwards, R. L., Fleisher, M. Q., Ho, P., Huang, K. F., John, S. G., Landing, W. M., Little, S. H., Lu, Y., Morton, P. L., Moran, S. B., Robinson, L. F., Shelley, R. U., Shiller, A. M., and Zheng, X. Y.: Replacement times of a spectrum of elements in the North Atlantic based on Thorium supply, Global Biogeochem. Cy., 32, 1294–1311, https://doi.org/10.1029/2017GB005839, 2018.
Hayes, C. T., Costa, K. M., Anderson, R. F., Calvo, E., Chase, Z., Demina, L. L., Dutay, J., German, C. R., Heimbürger-Boavida, L., Jaccard, S. L., Jacobel, A., Kohfeld, K. E., Kravchishina, M. D., Lippold, J., Mekik, F., Missiaen, L., Pavia, F. J., Paytan, A., Pedrosa-Pamies, R., Petrova, M. V., Rahman, S., Robinson, L. F., Roy-Barman, M., Sanchez-Vidal, A., Shiller, A., Tagliabue, A., Tessin, A. C., van Hulten, M., and Zhang, J.: Global Ocean Sediment Composition and Burial Flux in the Deep Sea, Glob. Biogeochem. Cycles, 35, e2020GB006769, https://doi.org/10.1029/2020GB006769, 2021.
Hazel, J. R. and Williams, E. E.: The role of alterations in membrane lipid composition in enabling physiological adaptation of organisms to their physical environment, Prog. Lipid Res., 29, 167–227, https://doi.org/10.1016/0163-7827(90)90002-3, 1990.
He, Y., Gao, C., Wei, W., and Liu, Y.: Density Functional Theory Calculations of Equilibrium Mo Isotope Fractionation Factors among MoO × S
Hebting, Y., Schaeffer, P., Behrens, A., Adam, P., Schmitt, G., Schneckenburger, P., Bernasconi, S.M., and Albrecht, P.: Biomarker Evidence for a Major Preservation Pathway of Sedimentary Organic Carbon, Science, 312, 1627–1631, https://doi.org/10.1126/science.1126372, 2006.
Hecht, A. D., Eslinger, E. V., and Garmon, L. B.: Experimental studies on the dissolution of planktonic foraminifera, in: Dissolution of Deep-sea Carbonates, edited by: Sliter, W. V., Bé, A. W. H., and Berger W. H., Cushman Found. Foraminiferal Res., 13, New York, USA, 56–69, ISBN-e: 9781970168075, 1975.
Hedges, J. I. and Keil, R. G.: Sedimentary organic matter preservation: an assessment and speculative synthesis, Mar. Chem., 49, 81–115, https://doi.org/10.1016/0304-4203(95)00008-F, 1995.
Heggie, D., Kahn, D., and Fischer, K.: Trace metals in metalliferous sediments, MANOP Site M: interfacial pore water profiles, Earth Planet. Sc. Lett., 80, 106–116, https://doi.org/10.1016/0012-821X(86)90023-3, 1986.
Heinz, P. and Hemleben, Ch.: Regional and seasonal variations of recent benthic deep-sea foraminifera in the Arabian Sea, Deep-Sea Res. Pt. I, 50, 435–447, https://doi.org/10.1016/S0967-0637(03)00014-1, 2003.
Helz, G. R.: The Re
Helz, G. R., Miller, C. V., Charnock, J. M., Mosselmans, J. F. W., Pattrick, R. A. D., Garner, C. D., and Vaughan, D. J.: Mechanism of molybdenum removal from the sea and its concentration in black shales: EXAFS evidence, Geochim. Cosmochim. Ac., 60, 3631–3642, https://doi.org/10.1016/0016-7037(96)00195-0, 1996.
Helz, G. R. and Dolor, M. K.: What regulates rhenium deposition in euxinic basins?, Chem. Geol., 304, 131–141, https://doi.org/10.1016/j.chemgeo.2012.02.011, 2012.
Helz, G. R. and Vorlicek, T. P.: Precipitation of molybdenum from euxinic waters and the role of organic matter, Chem. Geol., 509, 178–193, https://doi.org/10.1016/j.chemgeo.2019.02.001, 2019.
Hemingway, J. D., Kusch, S., Walter, S. R. S., Polik, C. A., Elling, F. J., and Pearson, A.: A novel method to measure the 13C composition of intact bacteriohopanepolyols, Org. Geochem., 123, 144–147, https://doi.org/10.1016/j.orggeochem.2018.07.002, 2018.
Hemingway, J. D., Rothman, D. H., Grant, K. E., Rosengard, S. Z., Eglinton, T. I., Derry, L. A., and Galy, V. V.: Mineral protection regulates long-term global preservation of natural organic carbon, Nature, 570, 228–231, https://doi.org/10.1038/s41586-019-1280-6, 2019.
Hemleben, C., Spindler, M., and Anderson, O. R.: Modern Planktonic Foraminifera, Springer New York, New York, NY, https://doi.org/10.1007/978-1-4612-3544-6, 1989.
Hendy, I. L., Pedersen, T. F., Kennett, J. P., and Tada, R. L.: Intermittent existence of a southern Californian upwelling cell during submillennial climate change of the past 60 kyr, Paleocean. Paleoclim., 19, PA3007, https://doi.org/10.1029/2003PA000965, 2004.
Hepach, H., Hughes, C., Hogg, K., Collings, S., and Chance, R.: Senescence as the main driver of iodide release from a diverse range of marine phytoplankton, Biogeosciences, 17, 2453–2471, https://doi.org/10.5194/bg-17-2453-2020, 2020.
Herbert, T. D., Lawrence, K. T., Tzanova, A., Peterson, L. C., Caballero-Gill, R., and Kelly, C. S.: Late Miocene global cooling and the rise of modern ecosystems, Nat. Geosci., 9, 843–847, https://doi.org/10.1038/ngeo2813, 2016.
Hermelin, J. O. R. and Shimmield, G. B.: The importance of the oxygen minimum zone and sediment geochemistry in the distribution of Recent benthic foraminifera in the northwest Indian Ocean, Mar. Geol., 91, 1–29, https://doi.org/10.1016/0025-3227(90)90130-C, 1990.
Hernandez-Sanchez, M. T., Homoky, W. B., and Pancost, R. D.: Occurrence of 1-O-monoalkyl glycerol ether lipids in ocean waters and sediments, Org. Geochem., 66, 1–13, https://doi.org/10.1016/j.orggeochem.2013.10.003, 2014.
Hess, A. V, Auderset, A., Rosenthal, Y., Miller, K. G., Zhou, X., Sigman, D. M., and Martínez-García, A.: A well-oxygenated eastern tropical Pacific during the warm Miocene, Nature, 619, 521–525, https://doi.org/10.1038/s41586-023-06104-6, 2023.
Higgins, M. B., Robinson, R. S., Carter, S. J., and Pearson, A.: Evidence from chlorin nitrogen isotopes for alternating nutrient regimes in the Eastern Mediterranean Sea, Earth Planet. Sc. Lett., 290, 102–107, https://doi.org/10.1016/j.epsl.2009.12.009, 2010.
Higgins, M. B., Robinson, R. S., Husson, J. M., Carter, S. J., and Pearson, A.: Dominant eukaryotic export production during ocean anoxic events reflects the importance of recycled NH
Hinrichs, K.-U., Pancost, R. D., Summons, R. E., Sprott, G. D., Sylva, S. P., Sinninghe Damsté, J. S., and Hayes, J. M.: Mass spectra of sn-2-hydroxyarchaeol, a polar lipid biomarker for anaerobic methanotrophy, Geochem. Geophy. Geosy., 1, 2000GC000042, https://doi.org/10.1029/2000gc000042, 2000.
Hinrichs, K.-U., Hmelo, L. R., and Sylva, S. P.: Molecular fossil record of elevated methane levels in Late Pleistocene coastal waters, Science, 299, 1214–1217, https://doi.org/10.1126/science.1079601, 2003.
Hlohowskyj, S., Chappaz, A., and Dickson, A. (Eds.): Molybdenum as a Paleoredox Proxy: Past, Present, and Future (Elements in Geochemical Tracers in Earth System Science), Cambridge: Cambridge University Press, United kingdom, ISBN 9781108993777, 2021.
Ho, P., Lee, J.-M., Heller, M. I., Lam, P. J., and Shiller, A. M.: The distribution of dissolved and particulate Mo and V along the U.S. GEOTRACES East Pacific Zonal Transect (GP16): The roles of oxides and biogenic particles in their distributions in the oxygen deficient zone and the hydrothermal plume, Mar. Chem., 201, 242–255, https://doi.org/10.1016/j.marchem.2017.12.003, 2018.
Høgslund, S., Revsbech, N. P., Cedhagen, T., Nielsen, L. P., and Gallardo, V. A.: Denitrification, nitrate turnover, and aerobic respiration by benthic foraminiferans in the oxygen minimum zone off Chile, J. Exp. Mar. Biol. Ecol., 359, 85–91, https://doi.org/10.1016/j.jembe.2008.02.015, 2008.
Hoogakker, B. A. A., Elderfield, H., Schmiedl, G., McCave, I. N., and Rickaby, R. E. M.: Glacial–interglacial changes in bottom-water oxygen content on the Portuguese margin, Nat. Geosci., 8, 40–43, https://doi.org/10.1038/ngeo2317, 2015.
Hoogakker, B. A. A., Thornalley, D. J. R., and Barker, S.: Millennial changes in North Atlantic oxygen concentrations, Biogeosciences, 13, 211–221, https://doi.org/10.5194/bg-13-211-2016, 2016.
Hoogakker, B. A. A., Lu, Z., Umling, N., Jones, L., Zhou, X., Rickaby, R. E. M., Thunell, R., Cartapanis, O., and Galbraith, E.: Glacial expansion of oxygen-depleted seawater in the eastern tropical Pacific, Nature, 562, 410–413, https://doi.org/10.1038/s41586-018-0589-x, 2018.
Hopmans, E. C., Smit, N. T., Schwartz-Narbonne, R., Sinninghe Damsté, J. S., and Rush, D.: Analysis of non-derivatized bacteriohopanepolyols using UHPLC-HRMS reveals great structural diversity in environmental lipid assemblages, Org. Geochem., 160, 104285, https://doi.org/10.1016/j.orggeochem.2021.104285, 2021.
Horn, M. G., Robinson, R. S., Rynearson, T. A., and Sigman, D. M.: Nitrogen isotopic relationship between diatom-bound and bulk organic matter of cultured polar diatoms: N isotopes in cultured polar diatoms, Paleocean. Paleoclim., 26, PA3208, https://doi.org/10.1029/2010PA002080, 2011.
Horner, J. J., Little, S. H., Conway, T. M., Farmer, J. R., Hertzberg, F., Janssen, D. J., Lough, A. J. M., McKay, J. L., Tessin, A., Galer, S. J. G., Jaccard, S. L., Lacan, F., Paytan, A., Wuttig, K., and GEOTRACES–PAGES Biological Productivity Working Group Members: Bioactive Trace Metals and Their Isotopes as Paleoproductivity Proxies: An Assessment Using GEOTRACES-Era Data, Global Biogeochem. Cy., 35, e2020GB006814, https://doi.org/10.1029/2020GB006814, 2021.
Hsiang, A. Y., Brombacher, A., Rillo, M. C., Mleneck-Vautravers, M. J., Conn, S., Lordsmith, S., Jentzen, A., Henehan, M. J., Metcalfe, B., Fenton, I. S., Wade, B. S., Fox, L., Meilland, J., Davis, C. V., Baranowski, U., Groeneveld, J., Edgar, K. M., Movellan, A., Aze, T., Dowsett, H. J., Miller, C. G., Rios, N., and Hull, P. M.: Endless Forams: > 34,000 modern planktonic foraminiferal images for taxonomic training and automated species recognition using convolutional neural networks, Paleocean. Paleoclim., 34, 1157–1177, https://doi.org/10.1029/2019PA003612, 2019.
Hu, R., Bostock, H. C., Gottschalk, J., and Piotrowski, A. M.: Reconstructing ocean oxygenation changes from U
Huerta-Diaz, M. A. and Morse, J. W.: Pyritization of trace metals in anoxic marine sediments, Geochim. Cosmochim. Ac., 56, 2681–2702, https://doi.org/10.1016/0016-7037(92)90353-K, 1992.
Hughes, C., Barton, E., Hepach, H., Chance, R., Pickering, M. D., Hogg, K., Pommerening-Röser, A., Wadley, M. R., Stevens, D. P., and Jickells, T. D.: Oxidation of iodide to iodate by cultures of marine ammonia-oxidising bacteria, Mar. Chem., 234, 104000, https://doi.org/10.1016/j.marchem.2021.104000, 2021.
Hull, P. M., Osborn, K. J., Norris, R. D., and Robison, B. H.: Seasonality and depth distribution of a mesopelagic foraminifer, Hastigerinella digitata, in Monterey Bay, California, Limnol. Oceanogr., 56, 562–576, https://doi.org/10.4319/lo.2011.56.2.0562, 2011.
Hupp, B. N., Kelly, D. C., Zachos, J. C., and Bralower, T. J.: Effects of size-dependent sediment mixing on deep-sea records of the Paleocene-Eocene Thermal Maximum, Geology, 47, 749–752, 2019.
Hupp, B. N. and Kelly, D. C.: Delays, Discrepancies, and Distortions: Size-Dependent Sediment Mixing and the Deep-Sea Record of the Paleocene-Eocene Thermal Maximum From ODP Site 690 (Weddell Sea), Paleocean. Paleoclim., 35, e2020PA004018, https://doi.org/10.1029/2020PA004018, 2020.
Hupp, B. N., Kelly, D. C., and Williams, J. W.: Isotopic filtering reveals high sensitivity of planktic calcifiers to Paleocene–Eocene thermal maximum warming and acidification, P. Natl. Acad. of Sci., 119, e2115561119, https://doi.org/10.1073/pnas.2115561119, 2022.
Hupp, B. N., Kelly, D. C., Kozdon, R., Orland, I. J., and Valley, J. W.: Secondary controls on the stratigraphic signature of the carbon isotope excursion marking the Paleocene-Eocene thermal maximum at Ocean Drilling Program Site 1135, Chem. Geol., 632, 121534, https://doi.org/10.1016/j.chemgeo.2023.121534, 2023.
Hutchins, D. A., Mulholland, M. R., and Fu, F.: Nutrient cycles and marine microbes in a CO2-enriched ocean, Oceanography, 22, 128–145, https://doi.org/10.5670/oceanog.2009.103, 2009.
Imbrie, J. and Kipp, N. G.: A new micropaleontological method for quantitative paleoclimatology: application to a late Pleistocene Caribbean Core, The Late Cenonoiz Glacial Ages, edited by: Turekian, K., 71–181, New Haven, Yale University Press, https://doi.org/10.1016/0033-5894(73)90051-3, 1971.
Ishikawa, N. F., Ogawa, N. O., Sun, Y., Chikaraishi, Y., Takano, Y., and Ohkouchi, N.: Integrative assessment of amino acid nitrogen isotopic composition in biological tissue samples determined by GC/C/IRMS, LC × EA/IRMS, and LC × GC/C/IRMS, Limnol. Oceanogr.-Meth., 20, 531–542, https://doi.org/10.1002/lom3.10502, 2022.
Ishimura, T., Tsunogai, U., and Gamo, T.: Stable carbon and oxygen isotopic determination of sub-microgram quantities of CaCO3 to analyze individual foraminiferal shells, Rapid Commun. Mass Spectrom., 18, 2883–2888, https://doi.org/10.1002/rcm.1701, 2004
Ito, T., Minobe, S., Long, M. C., and Deutsch, C.: Upper ocean O2 trends: 1958–2015, Geophys. Res. Lett., 44, 4214–4223, https://doi.org/10.1002/2017GL073613, 2017.
Iwasaki, S., Kimoto, K., Sasaki, O., Kano, H., Honda, M. C., and Okazaki, Y.: Observations of the dissolution process of Globigerina bulloides tests (planktic foraminifera) by X-ray microcomputed tomography, Paleocean. Paleoclim. 30, 317–331, https://doi.org/10.1002/2014PA002639, 2015.
Iwasaki, S., Kimoto, K., Okazaki, Y., and Ikehara, M.: X-ray micro-CT scanning of tests of three planktic foraminiferal species to clarify dissolution process and progress, Geochem. Geophy. Geosy., 20, 6051–6065, https://doi.org/10.1029/2019GC008456, 2019a.
Iwasaki, S., Kimoto, K., Sasaki, O., Kano, H., and Uchida, H.: Sensitivity of planktic foraminiferal test bulk density to ocean acidification, Sci. Rep., 9, 9803, https://doi.org/10.1038/s41598-019-46041-x, 2019b.
Jaccard, S. L., Galbraith, E. D., Sigman, D. M., Haug, G. H., Francois, R., Pedersen, T. F., Dulski, P., and Thierstein, H. R.: Subarctic Pacific evidence for a glacial deepening of the oceanic respired carbon pool, Earth Planet. Sc. Lett., 277, 156–165, https://doi.org/10.1016/j.epsl.2008.10.017, 2009.
Jacobel, A. W., McManus, J. F., Anderson, R. F., and Winckler, G.: Repeated storage of respired carbon in the equatorial Pacific Ocean over the last three glacial cycles, Nat. Commun., 8, 1727, https://doi.org/10.1038/s41467-017-01938-x, 2017.
Jacobel, A. W., Anderson, R. F., Jaccard, S. L., McManus, J. F., Pavia, F. J., and Winckler, G.: Deep Pacific storage of respired carbon during the last ice age: Perspectives from bottom water oxygen reconstructions, Quaternary Sci. Rev., 230, 106065, https://doi.org/10.1016/j.quascirev.2019.106065, 2020.
Jahn, B.: Elektronenmikroskopische Untersuchungen an Foraminiferenschalen, Z. Wiss. Mikrosk., 61, 294–297, 1953.
Jaeschke, A., Ziegler, M., Hopmans, E. C., Reichart, G., Lourens, L. J., Schouten, S., and Sinninghe Damsté, J. S.: Molecular fossil evidence for anaerobic ammonium oxidation in the Arabian Sea over the last glacial cycle, Paleocean. Paleoclim., 24, PA2202, https://doi.org/10.1029/2008PA001712, 2009.
Jahnke, L. L., Summons, R. E., Hope, J. M., and Marais, D. J. D.: Carbon isotopic fractionation in lipids from methanotrophic bacteria II: the effects of physiology and environmental parameters on the biosynthesis and isotopic signatures of biomarkers, Geochim. Cosmochim. Ac., 63, 79–93, https://doi.org/10.1016/S0016-7037(98)00270-1, 1999.
Jannink, N. T., Zachariasse, W. J., and Van der Zwaan, G. J.: Living (Rose Bengal stained) benthic foraminifera from the Pakistan continental margin (northern Arabian Sea), Deep-Sea Res. Pt. I, 45, 1483–1513, https://doi.org/10.1016/S0967-0637(98)00027-2, 1998.
Jannink, N. T.: Seasonality, biodiversity and microhabitats in benthic foraminiferal communities, Ph. D. thesis, Utrecht University, Netherlands, 192 pp., ISBN: 90-5744-060-1, 2001.
Jarvis, I. and Higgs, N.: Trace-element mobility during early diagenesis in distal turbidites: late Quaternary of the Madeira Abyssal Plain, N Atlantic, Geol. Soc. Sp., 31, 179–214, https://doi.org/10.1144/GSL.SP.1987.031.01.14, 1987.
Jayakumar, A., Chang, B. X., Widner, B., Bernhardt, P., Mulholland, M. R., and Ward, B. B.: Biological nitrogen fixation in the oxygen-minimum region of the eastern tropical North Pacific ocean, ISME J., 11, 2356–2367, https://doi.org/10.1038/ismej.2017.97, 2017.
Jenkyns, H. C.: Geochemistry of oceanic anoxic events, Geochem. Geophy. Geosy., 11, Q03004, https://doi.org/10.1029/2009GC002788, 2010.
Jochum, K. P., Weis, U., Stoll, B., Kuzmin, D., Yang, Q., Raczek, I., Jacob, D. E., Stracke, A., Birbaum, K., Frick, D. A., and Günther, D.: Determination of reference values for NIST SRM 610–617 glasses following ISO guidelines, Geostand. Geoanal. Res., 35, 397–429, https://doi.org/10.1111/j.1751-908X.2011.00120.x, 2011.
Jochum, K. P., Scholz, D., Stoll, B., Weis, U., Wilson, S.A., Yang, Q., Schwalb, A., Börner, N., Jacob, D. E., and Andreae, M. O.: Accurate trace element analysis of speleothems and biogenic calcium carbonates by LA-ICP-MS, Chem. Geol., 318, 31–44, https://doi.org/10.1016/j.chemgeo.2012.05.009, 2012.
Johnson, K. S., Riser, S. C., and Ravichandran, M.: Oxygen variability controls denitrification in the Bay of Bengal oxygen minimum zone, Geophys. Res. Lett., 46, 804–811, https://doi.org/10.1029/2018GL079881, 2019.
Johnstone, H. J. H., Schulz, M., Barker, S., and Elderfield, H.: Inside story: An X-ray computed tomography method for assessing dissolution in the tests of planktonic foraminifera, Mar. Micropaleontol., 77, 58–70, https://doi.org/10.1016/j.marmicro.2010.07.004, 2010.
Johnstone, H. J. H., Yu, J., Elderfield, H., and Schulz, M.: Improving temperature estimates derived from Mg
Jones, B. and Manning, D. A. C.: Comparison of Geochemical Indices Used for the Interpretation of Palaeoredox Conditions in Ancient Mudstones, Chem. Geol., 111, 111–129, https://doi.org/10.1016/0009-2541(94)90085-X, 1994.
Jones, C. A., Closset, I., Riesselman, C. R., Kelly, R. P., Brzezinski, M. A., and Robinson, R. S.: New Constraints on Assemblage-Driven Variation in the Relationship Amongst Diatom-Bound, Biomass, and Nitrate Nitrogen Isotope Values, Paleocean. Paleoclim., 37, e2022PA004428, https://doi.org/10.1029/2022PA004428, 2022.
Jonkers, L., Bothe, O., and Kucera, M.: Preface: Advances in paleoclimate data synthesis and analysis of associated uncertainty: towards data–model integration to understand the climate, Clim. Past, 17, 2577–2581, https://doi.org/10.5194/cp-17-2577-2021, 2021.
Jorissen, F. J., de Stigter, H. C., and Widmark, J. G.: A conceptual model explaining benthic foraminiferal microhabitats, Mar. Micropaleontol., 26, 3–15, https://doi.org/10.1016/0377-8398(95)00047-X, 1995.
Jorissen, F. J., Wittling, I., Peypouquet, J. P., Rabouille, C., and Relexans, J. C.: Live benthic foraminiferal faunas off Cape Blanc, NW-Africa: Community structure and microhabitats, Deep-Sea Res. Pt. I, 45, 2157–2188, https://doi.org/10.1016/S0967-0637(98)00056-9, 1998.
Jorissen, F. J., Fontanier, C., and Thomas, E.: Chapter seven paleoceanographical proxies based on deep-sea benthic foraminiferal assemblage characteristics, Dev. Mar. Geol, 1, 263–325, https://doi.org/10.1016/S1572-5480(07)01012-3, 2007.
Jorissen, F. J., Meyers, S. R., Kelly-Gerreyn, B. A., Huchet, L., Mouret, A., and Anschutz, P.: The 4GFOR model–Coupling 4G early diagenesis and benthic foraminiferal ecology, Mar. Micropal., 170, 102078, https://doi.org/10.1016/j.marmicro.2021.102078, 2022.
Junium, C. K., Freeman, K. H., and Arthur, M. A.: Controls on the stratigraphic distribution and nitrogen isotopic composition of zinc, vanadyl and free base porphyrins through Oceanic Anoxic Event 2 at Demerara Rise, Org. Geochem., 80, 60–71, https://doi.org/10.1016/j.orggeochem.2014.10.009, 2015.
Jung, M., Ilmberger, J., Mangini, A., and Emeis, K.-C.: Why some Mediterranean sapropels survived burn-down (and others did not), Mar. Geol., 141, 51–60, https://doi.org/10.1016/S0025-3227(97)00031-5, 1997.
Junium, C. K. and Arthur, M. A.: Nitrogen cycling during the Cretaceous, Cenomanian-Turonian oceanic anoxic event II, Geochem. Geophy. Geosy., 8, Q03002, https://doi.org/10.1029/2006GC001328, 2007.
Kaiho, K.: Benthic foraminiferal dissolved-oxygen index and dissolved-oxygen levels in the modern ocean, Geology, 22, 719–722, https://doi.org/10.1130/0091-7613(1994)022<0719:BFDOIA>2.3.CO;2, 1994.
Kaiho, K.: Effect of organic carbon flux and dissolved oxygen on the benthic foraminiferal oxygen index (BFOI), Mar. Micropaleontol., 37, 67–76, https://doi.org/10.1016/S0377-8398(99)00008-0, 1999.
Kaiho, K., Takeda, K., Petrizzo, M. R., and Zachos, J. C.: Anomalous shifts in tropical Pacific planktonic and benthic foraminiferal test size during the Paleocene-Eocene thermal maximum, Palaeogeogr. Palaeocl., 237, 456–464, https://doi.org/10.1016/j.palaeo.2005.12.017, 2006.
Kalvelage, T., Jensen, M. M., Contreras, S., Revsbech, N. P., Lam, P., Günter, M., LaRoche, J., Lavik, G., and Kuypers, M. M. M.: Oxygen sensitivity of anammox and coupled N-cycle processes in oxygen minimum zones, PLoS ONE, 6, e29299-12, https://doi.org/10.1371/journal.pone.0029299, 2011.
Kaneko, M., Takano, Y., Kamo, M., Morimoto, K., Nunoura, T., and Ohkouchi, N.: Insights into the methanogenic population and potential in subsurface marine sediments based on coenzyme F430 as a function-specific biomarker, JACS Au, 1, 1743–1751, https://doi.org/10.1021/jacsau.1c00307, 2021.
Kaplan, I. R. and Rittenberg, S. C.: Microbiological fractionation of sulphur isotopes, J. Gen. Microbiol., 34, 195–212, https://doi.org/10.1099/00221287-34-2-195, 1964.
Kappler, A. and Bryce, C.: Cryptic biogeochemical cycles: unravelling hidden redox reactions, Environ. Microbiol., 19, 842–846, https://doi.org/10.1111/1462-2920.13687, 2017.
Kast, E. R., Stolper, D. A., Auderset, A., Higgins, J. A., Ren, H., Wang, X. T., Martínez-García, A., Haug, G. H., and Sigman, D. M.: Nitrogen isotope evidence for expanded ocean suboxia in the early Cenozoic, Science, 364, 386–389, https://doi.org/10.1126/science.aau5784, 2019.
Keating-Bitonti, C. R. and Payne, J. L.: Ecophenotypic responses of benthic foraminifera to oxygen availability along an oxygen gradient in the California Borderland, Mar. Ecol., 38, e12430, https://doi.org/10.1111/maec.12430, 2017.
Keeling, R. F. and García, H. E.: The change in oceanic O2 inventory associated with recent global warming, P. Natl. Acad. Sci. USA, 99, 7848–7853, https://doi.org/10.1073/pnas.122154899, 2002.
Keeling, R. F., Körtzinger, A., and Gruber, N.: Ocean Deoxygenation in a Warming World, Annu. Rev. Mar. Sci., 2, 199–229, https://doi.org/10.1146/annurev.marine.010908.163855, 2010.
Keil, R. G. and Cowie, G. L.: Organic matter preservation through the oxygen-deficient zone of the NE Arabian Sea as discerned by organic carbon: mineral surface area ratios, Mar. Geol., 161, 13–22, https://doi.org/10.1016/S0025-3227(99)00052-3, 1999.
Kelemen, S. R., Sansone, M., Walters, C. C., Kwiatek, P. J., and Bolin, T.: Thermal Transformations of Organic and Inorganic Sulfur in Type II Kerogen Quantified by S-XANES, Geochim. Cosmochim. Ac., 83, 61–78, https://doi.org/10.1016/j.gca.2011.12.015, 2012.
Kemp, A. E. S.: Laminated sediments as palaeo-indicators, Geol. Soc. Lond. Spec. Publ., 116, vii–xii, https://doi.org/10.1144/GSL.SP.1996.116.01.01, 1996.
Kemp, A. E. S., Pike, J., Pearce, R. B., and Lange, C. B.: The “Fall dump”: A new perspective on the role of a shade flora in the annual cycle of diatom production and export flux, Deep-Sea Res. Pt. II, 47, 2129–2154, https://doi.org/10.1016/S0967-0645(00)00019-9, 2000.
Kemp, A. E. S., Pearce, R. B., Grigorov, I., Rance, J., Lange, C. B., Quilty, P., and Salter, I.: Production of giant marine diatoms and their export at oceanic frontal zones: Implications for Si and C flux from stratified oceans, Glob. Biogeoch. Cy., 20, GB4S04, https://doi.org/10.1029/2006GB002698, 2006.
Kendall, B., Dahl, T. W., and Anbar, A. D.: The stable isotope geochemistry of molybdenum, Rev. Mineral. Geochem., 82, 683–732, https://doi.org/10.2138/rmg.2017.82.16, 2017.
Kendall, B., Komiya, T., Lyons, T. W., Bates, S. M., Gordon, G. W., Romaniello, S. J., Jiang, G., Creaser, R. A., Xiao, S., McFadden, K., Sawaki, Y., Tahata, M., Shu, D., Han, J., Li, Y., Chu, X., and Anbar, A. D.: Uranium and molybdenum isotope evidence for an episode of widespread ocean oxygenation during the late Ediacaran Period, Geochim. Cosmochim. Ac., 156, 173–193, https://doi.org/10.1016/j.gca.2015.02.025, 2015.
Kennedy, H. A. and Elderfield, H.: Iodine diagenesis in pelagic deep-sea sediments, Geochim. Cosmochim. Ac., 51, 2489–2504, https://doi.org/10.1016/0016-7037(87)90300-0, 1987a.
Kennedy, H. A. and Elderfield, H.: Iodine diagenesis in non-pelagic deep-sea sediments, Geochim. Cosmochim. Ac., 51, 2505–2514, https://doi.org/10.1016/0016-7037(87)90301-2, 1987b.
Kerisit, S. N., Smith, F. N., Saslow, S. A., Hoover, M. E., Lawter, A. R., and Qafoku, N. P.: Incorporation modes of iodate in calcite, Environ. Sci. Technol., 52, 5902–5910, https://doi.org/10.1021/acs.est.8b00339, 2018.
Kerl, C. F., Lohmayer, R., Bura-Nakic, E., Vance, D., and Planer-Friedrich, B.: Experimental confirmation of isotope fractionation in thiomolybdates using ion chromatographic separation and detection by multicollector ICPMS, Anal. Chem., 89, 3123–3129, https://doi.org/10.1021/acs.analchem.6b04898, 2017.
Khider, D., Geay, J. E., McKay, N. P., Gil, Y., Garijo, D., Ratnakar, V., Garcia, M. A., Bertrand, S., Bothe, O., Brewer, P., Bunn, A., Chevalier, M., Bru, L. C., Csank, A., Dassié, E., DeLong, K., Felis, T., Francus, P., Frappier, A., Gray, W., Goring, S., Jonkers, L., Kahle, M., Kaufman, D., Kehrwald, N. M., Martrat, B., McGregor, H., Richey, J., Schmittner, A., Scroxton, N., Sutherland, E., Thirumalai, K., Allen, K., Arnaud, F., Axford, Y., Barrows, T., Bazin, L., Birch, S. E. P., Bradley, E., Bregy, J., Capron, E., Cartapanis, O., Chiang, H. W., Cobb, K. M., Debret, M., Dommain, R., Du, J., Dyez, K., Emerick, S., Erb, M. P., Falster, G., Finsinger, W., Fortier, D., Gauthier, N., George, S., Grimm, E., Hertzberg, J., Hibbert, F., Hillman, A., Hobbs, W., Huber, M., Hughes, A. L. C., Jaccard, S., Ruan, J., Kienast, M., Konecky, B., Roux, G.L., Lyubchich, V., Novello, V.F., Olaka, L., Partin, J. W., Pearce, C., Phipps, S.J., Pignol, C., Piotrowska, N., Poli, M. S., Prokopenko, A., Schwanck, F., Stepanek, C., Swann, G. E. A., Telford, R., Thomas, E., Thomas, Z., Truebe, S., Gunten, L., Waite, A., Weitzel, N., Wilhelm, B., Williams, J., Williams, J. J., Winstrup, M., Zhao, N., and Zhou, Y.: PaCTS 1.0: A Crowdsourced Reporting Standard for Paleoclimate Data, Paleocean. Paleoclim., 34, 1570–1596, https://doi.org/10.1029/2019pa003632, 2019.
Khon, V.C., Hoogakker, B. A. A., Schneider, B., Segschneider, J., and Park, W.: Effect of an Open Central American Seaway on Ocean Circulation and the Oxygen Minimum Zone in the Tropical Pacific From Model Simulations, Geophys. Res. Lett., 50, e2023GL103728, https://doi.org/10.1029/2023GL103728, 2023
Killops, S. D. and Killops, V. J. (Eds.): Introduction to Organic Geochemistry. Wiley-Blackwell, New Jersey, USA, 408 pp., ISBN 0632065044, 2005.
Kim, B. and Zhang, Y. G.: Methane Index: Towards a quantitative archaeal lipid biomarker proxy for reconstructing marine sedimentary methane fluxes, Geochim. Cosmochim. Ac., 354, 74–87, https://doi.org/10.1016/j.gca.2023.06.008, 2023.
King, K. and Hare, P. E.: Amino Acid Composition of Planktonic Foraminifera: A Paleobiochemical Approach to Evolution, Science, 175, 1461–1463, https://doi.org/10.1126/science.175.4029.1461, 1972.
King, S. C., Kemp, A. E. S., and Murray, J. W.: Benthic foraminifera assemblages in Neogene laminated diatom ooze deposits in the east equatorial Pacific Ocean (Site 844). Proceedings of the Ocean Drilling Program, Sci. Res. Leg. 138, 665, https://doi.org/10.2973/odp.proc.sr.138.137.1995, 1995.
Kinoshita, S., Kuroyanagi, A., Kawahata, H., Fujita, K., Ishimura, T., Suzuki, A., Sasaki, O., and Nishi, H.: Temperature effects on the shell growth of a larger benthic foraminifer (Sorites orbiculus): Results from culture experiments and micro X-ray computed tomography, Mar. Micropaleontol., 163, 101960, https://doi.org/10.1016/j.marmicro.2021.101960, 2021.
Kipp, N. G.: New transfer function for estimating past sea-surface conditions from sea-bed distribution of planktonic foraminiferal assemblages in the North Atlantic, in: Investigation of Late Quaternary Paleocean. Paleoclim., edited by: Cune, R. M. and Hays, J. D., Geol. Soc. Am., USA, https://doi.org/10.1130/MEM145-p3, 1976.
Klinkhammer, G. P. and Bender, M. L.: The distribution of manganese in the Pacific Ocean, Earth Planet. Sc. Lett., 46, 361–384, https://doi.org/10.1016/0012-821X(80)90051-5, 1980.
Klinkhammer, G. P. and Palmer, M. R.: Uranium in the oceans: Where it goes and why, Geochim. Cosmochim. Ac., 55, 1799–1806, https://doi.org/10.1016/0016-7037(91)90024-Y, 1991.
Klinkhammer, G. P., Mix, A. C., and Haley, B. A.: Increased dissolved terrestrial input to the coastal ocean during the last deglaciation, Geochem. Geophy. Geosy., 10, Q03009, https://doi.org/10.1029/2008GC002219, 2009.
Knapp, A. N., Casciotti, K. L., Berelson, W. M., Prokopenko, M. G., and Capone, D. G.: Low rates of nitrogen fixation in eastern tropical South Pacific surface waters, P. Natl. Acad. Sci., 113, 4398–4403, https://doi.org/10.1073/pnas.1515641113, 2016.
Kobayashi, K., Makabe, A., Yano, M., Oshiki, M., Kindaichi, T., Casciotti, K. L., and Okabe, S.: Dual nitrogen and oxygen isotope fractionation during anaerobic ammonium oxidation by anammox bacteria, ISME J., 13, 2426–2436, https://doi.org/10.1038/s41396-019-0440-x, 2019.
Koga, Y., Nishihara, M., Morii, H., and Akagawa-Matsushita, M.: Ether polar lipids of methanogenic bacteria structures, comparative aspects, and biosyntheses, Microbiol. Rev., 57, 164–182, https://doi.org/10.1128/mr.57.1.164-182.1993, 1993.
Koga, Y., Morii, H., Akagawa-Matsushita, M., and Ohga, M.: Correlation of polar lipid composition with 16S rRNA phylogeny in methanogens, Further analysis of lipid component parts, Biosci. Biotech. Bioch., 62, 230–236, https://doi.org/10.1271/bbb.62.230, 1998.
Kohnen, M. E. L., Sinninghe Damsté, J. S., ten Haven, H. L., and De Leeuw, J. W.: Early incorporation of polysulphides in sedimentary organic matter, Nature, 341, 640–41, https://doi.org/10.1038/341640a0, 1989.
Kohnen, M. E. L., Damste, J. S. S., and De Leeuw, J. W.: Biases from natural sulphurization in palaeoenvironmental reconstruction based on hydrocarbon biomarker distributions, Nature, 349, 775–778, https://doi.org/10.1038/349775a0, 1991.
Koho, K. A., Kouwenhoven, T. J., de Stigter, H. C., and Van der Zwaan, G. J.: Benthic foraminifera in the Nazaré Canyon, Portuguese continental margin: Sedimentary environments and disturbance, Mar. Micropaleontol., 66, 27–51, https://doi.org/10.1016/j.marmicro.2007.07.005, 2007.
Koho, K. A., García, R. D., De Stigter, H. C., Epping, E., Koning, E., Kouwenhoven, T. J., and van der Zwaan, G. J.: Sedimentary labile organic carbon and pore water redox control on species distribution of benthic foraminifera: A case study from Lisbon–Setúbal Canyon (southern Portugal), Progr. Oceanogr., 79, 55–82, https://doi.org/10.1016/j.pocean.2008.07.004, 2008.
Koho, K. A., and Piña-Ochoa, E.: Benthic foraminifera: inhabitants of low-oxygen environments, in: Anoxia, edited by: Altenbach, A., Bernhard, J., Seckbach, J., Springer, Dordrecht, Germany, 249–285, Springer, Dordrecht, https://doi.org/10.1007/978-94-007-1896-8_14, 2012.
Koho, K. A., Nierop, K. G. J., Moodley, L., Middelburg, J. J., Pozzato, L., Soetaert, K., van der Plicht, J., and Reichart, G. J.: Microbial bioavailability regulates organic matter preservation in marine sediments, Biogeosciences, 10, 1131–1141, https://doi.org/10.5194/bg-10-1131-2013, 2013.
Koho, K. A., de Nooijer, L. J., and Reichart, G. J.: Combining benthic foraminiferal ecology and shell Mn
Koho, K. A., De Nooijer, L. J., Fontanier, C., Toyofuku, T., Oguri, K., Kitazato, H., and Reichart, G. J.: Benthic foraminiferal Mn
Kok, M. D., Rijpstra, W. I. C, Robertson, L., Volkman, J. K., and Sinninghe Damsté, J. S.: Early Steroid sulfurisation in surface sediments of a permanently stratified lake (Ace Lake, Antarctica), Geochim. Cosmochim. Ac. 64, 1425–1436, https://doi.org/10.1016/S0016-7037(99)00430-5, 2000.
Kolouchová, I., Timkina, E., Maťátková, O., Kyselová, L., and Řezanka, T.: Analysis of bacteriohopanoids from thermophilic bacteria by liquid chromatography–mass spectrometry, Microorganisms, 9, 2062, https://doi.org/10.3390/microorganisms9102062, 2021.
Kool, D. M., Talbot, H. M., Rush, D., Ettwig, K., and Sinninghe Damsté, J. S.: Rare bacteriohopanepolyols as markers for an autotrophic, intra-aerobic methanotroph, Geochim. Cosmochim. Ac., 136, 114–125, https://doi.org/10.1016/j.gca.2014.04.002, 2014.
Kraft, B., Jehmlich, N., Larsen, M., Bristow, L. A., Könneke, M., Thamdrup, B., and Canfield, D. E.: Oxygen and nitrogen production by an ammonia-oxidizing archaeon, Science, 375, 97–100, https://doi.org/10.1126/science.abe6733, 2022.
Kranner, M., Harzhauser, M., Beer, C., Auer, G., and Piller, W. E.: Calculating dissolved marine oxygen values based on an enhanced Benthic Foraminifera Oxygen Index, Sci. Rep., 12, 1–13, https://doi.org/10.1038/s41598-022-05295-8, 2022.
Kristiansen, K. D., Kristensen, E. and Jensen, E. M. H.: The influence of water column hypoxia on the behaviour of manganese and iron in sandy coastal marine sediment, Estuar. Coast. Shelf S., 55, 645–654, https://doi.org/10.1006/ecss.2001.0934, 2002.
Ku, T. L., Mathieu, G. G. and Knauss, K. G.: Uranium in open ocean: concentration and isotopic composition, Deep-Sea Res., 24, 1005–1017, https://doi.org/10.1016/0146-6291(77)90571-9, 1977.
Kucera, M.: Chapter Six planktonic foraminifera as tracers of past ocean environments, Dev. Mar. Geol., 1, 213–262, https://doi.org/10.1016/S1572-5480(07)01011-1, 2007.
Kucera, M., Weinelt, M., Kiefer, T., Pflaumann, U., Hayes, A., Weinelt, M., Chen, M. W., Mix, A. C., Barrows, T. T., Cortijo, E., Duprat, J., Juggins, S., and Waelbroeck, C.: Reconstruction of sea-surface temperatures from assemblages of planktonic foraminifera: multi-technique approach based on geographically constrained calibration data sets and its application to glacial Atlantic and Pacific Oceans, Quaternary Sci. Rev., 24, 951–998, https://doi.org/10.1016/j.quascirev.2004.07.014, 2005.
Kühn, H., Lembke-Jene, L., Gersonde, R., Esper, O., Lamy, F., Arz, H., Kuhn, G., and Tiedemann, R.: Laminated sediments in the Bering Sea reveal atmospheric teleconnections to Greenland climate on millennial to decadal timescales during the last deglaciation, Clim. Past, 10, 2215–2236, https://doi.org/10.5194/cp-10-2215-2014,2014.
Kuhnt, T., Friedrich, O., Schmiedl, G., Milker, Y., Mackensen, A., and Lückge, A.: Relationship between pore density in benthic foraminifera and bottom-water oxygen content, Deep-Sea Res. Pt. I, 76, 85–95, https://doi.org/10.1016/j.dsr.2012.11.013, 2013.
Kuhnt, T., Schiebel, R., Schmiedl, G., Milker, Y., Mackensen, A., and Friedrich, O.: Automated and manual analyses of the pore density-to-oxygen relationship in Globobulimina Turgida (Bailey), J. Foraminifer. Res., 44, 5–16, https://doi.org/10.2113/gsjfr.44.1.5, 2014.
Kumar, N., Anderson, R. F., Mortlock, R. A., Froelich, P. N., Kubik, P., Dittrich-Hannen, B., and Suter, M.: Increased biological productivity and export production in the glacial Southern Ocean, Nature, 378, 675–680, https://doi.org/10.1038/378675a0, 1995.
Kuroda, J., Ohkouchi, N., Ishii, T., Tokuyama, H., and Taira, A.: Lamina-scale analysis of sedimentary components in Cretaceous black shales by chemical compositional mapping: Implications for paleoenvironmental changes during the Oceanic Anoxic Events, Geochim. Cosmochim. Ac., 69, 1479–1494, https://doi.org/10.1016/j.gca.2004.06.039, 2005.
Kuroyanagi, A., da Rocha, R. E., Bijma, J., Spero, H. J., Russell, A. D., Eggins, S. M., and Kawahata, H.: Effect of dissolved oxygen concentration on planktonic foraminifera through laboratory culture experiments and implications for oceanic anoxic events, Mar. Micropaleontol., 101, 28–32, https://doi.org/10.1016/j.marmicro.2013.04.005, 2013.
Kuroyanagi, A., Iriem T., Kinoshita, S., Kawahata, H., Suzuki, A., Nishi, H., Sasaki, O., Takashima, R., and Fujita, K.: Decrease in volume and density of foraminiferal shells with progressing ocean acidification, Sci. Rep., 11, 19988, https://doi.org/10.1038/s41598-021-99427-1, 2021.
Kusch, S., Kashiyama, Y., Ogawa, N. O., Altabet, M., Butzin, M., Friedrich, J., Ohkouchi, N., and Mollenhauer, G.: Implications for chloro-and pheopigment synthesis and preservation from combined compound-specific δ13C, δ15N, and Δ14C analysis, Biogeosciences, 7, 4105–4118, https://doi.org/10.5194/bg-7-4105-2010, 2010.
Kusch, S. and Rush, D.: Revisiting the precursors of the most abundant natural products on Earth: a look back at 30+ years of bacteriohopanepolyol (BHP) research and ahead to new frontiers, Org. Geochem., 172, 104469, https://doi.org/10.1016/j.orggeochem.2022.104469, 2022.
Kusch, S., Wakeham, S. G., Dildar, N., Zhu, C., and Sepúlveda, J.: Bacterial and archaeal lipids trace chemo(auto)trophy along the redoxcline in Vancouver Island fjords, Geobiology, 19, 521–541, https://doi.org/10.1111/gbi.12446, 2021.
Kusch, S., Wakeham, S. G., and Sepúlveda, J.: Bacteriohopanepolyols across the Black Sea redoxcline trace diverse bacterial metabolisms, Org. Geochem., 172, 104462, https://doi.org/10.1016/j.orggeochem.2022.104462, 2022.
Kutuzov, I., Rosenberg, Y. O., Bishop, A., and Amrani, A.: The origin of organic sulphur compounds and their impact on the paleoenvironmental record, in: Hydrocarbons, Oils and Lipids: Diversity, Origin, Chemistry and Fate, edited by: Wilkes, H., Springer, Cham, 1–54, https://doi.org/10.1007/978-3-319-54529-5, 2019.
Kuypers, M. M. M., Breugel, Y. van, Schouten, S., Erba, E., and Sinninghe Damsté, J. S.: N2-fixing cyanobacteria supplied nutrient N for Cretaceous oceanic anoxic events, Geology, 32, 853–856, https://doi.org/10.1130/G20458.1, 2004.
Kwiatkowski, L., Torres, O., Bopp, L., Aumont, O., Chamberlain, M., Christian, J. R., Dunne, J. P., Gehlen, M., Ilyina, T., John, J. G., Lenton, A., Li, H., Lovenduski, N. S., Orr, J. C., Palmieri, J., Santana-Falcón, Y., Schwinger, J., Séférian, R., Stock, C. A., Tagliabue, A., Takano, Y., Tjiputra, J., Toyama, L., Tsujino, H., Watanabe, M., Yamamoto, A., Yool, A., and Ziehn, T.: Twenty-first century ocean warming, acidification, deoxygenation, and upper-ocean nutrient and primary production decline from CMIP6 model projections, Biogeosciences 17, 3439–3470, https://doi.org/10.5194/bg-17-3439-2020, 2020.
Lam, P. and Kuypers, M. M. M.: Microbial nitrogen cycling processes in oxygen minimum zones, Annu. Rev. Mar. Sci., 3, 317–345, https://doi.org/10.1146/annurev-marine-120709-142814, 2011.
Langlet, D., Geslin, E., Baal, C., Metzger, E., Lejzerowicz, F., Riedel, B., Zuschin, M., Pawlowski, J., Stachowitsch, M., and Jorissen, F. J.: Foraminiferal survival after long-term in situ experimentally induced anoxia, Biogeosciences, 10, 7463–7480, https://doi.org/10.5194/bg-10-7463-2013, 2013.
Langmuir, D.: Uranium solution-mineral equilibria at low temperatures with applications to sedimentary ore deposits, Geochim. Cosmochim. Ac., 42, 547–569, https://doi.org/10.1016/0016-7037(78)90001-7, 1978.
Large, R. R., Halpin, J. A., Danyushevsky, L. V., Maslennikov, V. V., Bull, S. W., Long, J. A., Gregory, D. D., Lounejeva, E., Lyons, T. W., Sack, P. J. and McGoldrick, P. J.: Trace element content of sedimentary pyrite as a new proxy for deep-time ocean–atmosphere evolution, Earth Planet. Sc. Lett., 389, 209–220, https://doi.org/10.1016/j.epsl.2013.12.020, 2014.
Lau, K. V., Romaniello, S. J., and Zhang, F. (Eds.): The uranium isotope paleoredox proxy, Cambridge University Press, Cambridge, United Kingdom, ISBN 9781108584142, https://doi.org/10.1017/9781108584142, 2019.
Lau, K. V., Lyons, T. W., and Maher, K.: Uranium reduction and isotopic fractionation in reducing sediments: Insights from reactive transport modeling, Geochim. Cosmochim. Ac., 287, 65–92, https://doi.org/10.1016/j.gca.2020.01.021, 2020.
Lau, K. V. and Hardisty, D. S.: Modeling the impacts of diagenesis on carbonate paleoredox proxies, Geochim. Cosmochim. Ac., 337, 123–139, https://doi.org/10.1016/j.gca.2022.09.021, 2022.
Lea, D. W.: Trace elements in foraminiferal calcite, in: Modern foraminifera 259–277, Dordrecht, Springer Netherlands, https://doi.org/10.1007/0-306-48104-9_15, 1999.
Le Calvez, J.: Les perforations du test de Discorbis erecta (Foraminifère), Bulletin de Laboratoire Maritime de Dinard, 29, 1–4, 1947.
Legeleux, F., Reyss, J., Bonte, P., and Organo, C.: Concomitant enrichments of uranium, molybdenum and arsenic in suboxic continental-margin sediments, Oceanol. Acta, 17, 417–429, 1994.
Leiter, C. and Altenbach, A. V.: Benthic foraminifera from the diatomaceous mud belt off Namibia: characteristic species for severe anoxia, Palaeontol. Electron., 13, 1–19, 2010.
LeKieffre, C., Spangenberg, J. E., Mabilleau, G., Escrig, S., Meibom, A., and Geslin, E.: Surviving anoxia in marine sediments: The metabolic response of ubiquitous benthic foraminifera (Ammonia tepida), PLOS ONE, 12, e0177604, https://doi.org/10.1371/journal.pone.0177604, 2017.
Lengger, S. K., Rush, D., Mayser, J. P., Blewett, J., Narbonne, R. S., Talbot, H. M., Middelburg, J. J., Jetten, M. S. M., Schouten, S., Sinninghe Damsté, J. S., and Pancost, R.D.: Dark carbon fixation in the Arabian Sea oxygen minimum zone contributes to sedimentary organic carbon (SOM), Global Biogeochem. Cy., 33, 1715–1732, https://doi.org/10.1029/2019GB006282, 2019.
Leutenegger, S.: Ultrastructure de foraminiferes perfores et imperfores ainsi que de Leurs symbiotes, Cahiers Micropaleontol., 3, 1–52, 1977.
Leutenegger, S. and Hansen, H. J.: Ultrastructural and radiotracer studies of pore function in Foraminifera, Mar. Biol., 54, 11–16, https://doi.org/10.1007/BF00387046, 1979.
Levin, L. A., Etter, R. J., Rex, M. A., Gooday, A. J., Smith, C. R., Pineda, J., Stuart, C. T., Hessler, R. R., and Pawson, D.: Environmental influences on regional deep-sea species diversity, Annu. Rev. Ecol. Syst., 51–93, https://doi.org/10.1146/annurev.ecolsys.32.081501.114002, 2001.
Levin, L., Gutiérrez, D., Rathburn, A., Neira, C., Sellanes, J., Muñoz, P., Gallardo, V., and Salamanca, M.: Benthic processes on the Peru margin: a transect across the oxygen minimum zone during the 1997–98 El Niño, Prog. Oceanogr., 53, 1–27, https://doi.org/10.1016/S0079-6611(02)00022-8, 2002.
Levin, L. A.: Oxygen minimum zone Benthos: Adaptation and community response to hypoxia, Oceanogr. Mar. Biol., 41, 1–45, 2003.
Levin, L. A.: Manifestation, drivers, and emergence of open ocean deoxygenation, Annu. Rev. Mar. Sci., 10, 229–260, https://doi.org/10.1146/annurev-marine-121916-063359, 2018.
Li, C., Jian, Z., Jia, G., Dang, H., and Wang, J.: Nitrogen fixation changes regulated by upper water structure in the South China Sea during the last two glacial cycles, Global Biogeochem. Cy., 33, 1010–1025, https://doi.org/10.1029/2019GB006262, 2019.
Li, J., Wang, Y., Guo, W., Xie, X., Zhang, L., Liu, Y., and Kong, S.: Iodine mobilization in groundwater system at Datong basin, China: evidence from hydrochemistry and fluorescence characteristics, Sci. Total Environ., 468, 738–745, https://doi.org/10.1016/j.scitotenv.2013.08.092, 2014.
Linke, P. and Lutze, G. F.: Microhabitat preferences of benthic foraminifera – a static concept or a dynamic adaptation to optimize food acquisition?, Mar. Micropaleontol., 20, 215–234, https://doi.org/10.1016/0377-8398(93)90034-U, 1993.
Little, S. H., Vance, D., Lyons, T. W., and McManus, J.: Controls on trace metal authigenic enrichment in reducing sediments: Insights from modern oxygen-deficient settings, Am. J. Sci., 315, 77–119, https://doi.org/10.2475/02.2015.01, 2015.
Liu, J. and Algeo, T.J.: Beyond redox: Control of trace-metal enrichment in anoxic marine facies by water mass chemistry and sedimentation rates, Geochim. Cosmochim. Ac., 287, 269–317, https://doi.org/10.1016/j.gca.2020.02.037, 2020.
Liu, K.-K. and Kaplan, I. R.: The eastern tropical Pacific as a source of 15N-enriched nitrate in seawater off southern California: Origin of 15N-rich nitrate, Limnol. Oceanogr., 34, 820–830, https://doi.org/10.4319/lo.1989.34.5.0820, 1989.
Liu, X.-L., Summons, R. E., and Hinrichs, K.-U.: Extending the known range of glycerol ether lipids in the environment: structural assignments based on tandem mass spectral fragmentation patterns, Rapid Commun. Mass Sp., 26, 2295–2302, https://doi.org/10.1002/rcm.6355, 2012.
Liu, X.-L., Zhu, C., Wakeham, S.G., and Hinrichs, K.-U.: In situ production of branched glycerol dialkyl glycerol tetraethers in anoxic marine water columns, Mar. Chem., 166, 1–8, https://doi.org/10.1016/j.marchem.2014.08.008, 2014.
Liu, Z., Altabet, M. A., and Herbert, T. D.: Plio-Pleistocene denitrification in the eastern tropical North Pacific: Intensification at 2.1 Ma: ETNP denitrification intensification at 2.1 Ma, Geochem. Geophy. Geosy., 9, Q11006, https://doi.org/10.1029/2008GC002044, 2008.
Loeblich Jr., A. R. and Tappan, H. (Eds.): Foraminiferal Genera and Their Classification, Van Nostrand Reihhold, New York, 868 pp., ISBN 9781489957627, 1988.
Loescher, C. R., Großkopf, T., Desai, F. D., Gill, D., Schunck, H., Croot, P. L., Schlosser, C., Neulinger, S. C., Pinnow, N., Lavik, G., Kuypers, M. M. M., LaRoche, J., and Schmitz, R. A.: Facets of diazotrophy in the oxygen minimum zone waters off Peru, ISME J., 8, 2180–2192, https://doi.org/10.1038/ismej.2014.71, 2014.
Lohmann, G. P.: A model for variation in the chemistry of planktonic foraminifera due to secondary calcification and selective dissolution, Paleocean. Paleoclim., 10, 445–457, https://doi.org/10.1029/95PA00059, 1995.
Loubere, P., Gary, A., and Lagoe, M.: Generation of the benthic foraminiferal assemblage: Theory and preliminary data, Mar. Micropaleontol., 20, 165–181, https://doi.org/10.1016/0377-8398(93)90031-R, 1993.
Loubere, P.: Quantitative estimation of surface ocean productivity and bottom water oxygen concentration using benthic foraminifera, Paleocean. Paleoclim., 9, 723–737, https://doi.org/10.1029/94PA01624, 1994.
Lovley, D. R., Phillips, E. J., Gorby, Y. A., and Landa, E. R.: Microbial reduction of uranium, Nature, 350, 413–416, https://doi.org/10.1038/350413a0, 1991.
Löwemark, L., Chen, H.F., Yang, T.N., Kylander, M., Yu, E.-F., Hsu, Y.-W., Lee, T.-Q., Song, S.-R., and Jarvis, S.: Normalizing XRF-scanner data: a cautionary note on the interpretation of high resolution records from organic rich lakes, J. Asian Earth Sci., 40, 1250–1256, https://doi.org/10.1016/j.jseaes.2010.06.002, 2010.
Löwemark, L., Bloemsma, M., Croudace, I., Daly, J. S., Edwards, R. J., Francus, P., Galloway, J. M., Gregory, B. R. B., Huang, J-J..S., Jones, A. F., Kylander, M., Lowemark, L., Luo, Y., Maclachlan, S., Ohlendorf, C., Patterson, R. T., Pearce, C., Profe, J., Reinhardt, E. G., Stranne, C., Tjallingii, R., and Turner, J. N.: Practical guidelines and recent advances in the Itrax XRF core-scanning procedure, Quaternary Int., 514, 16–29, https://doi.org/10.1016/j.quaint.2018.10.044, 2019.
Lu, Z., Jenkyns, H. C., and Rickaby, R. E.: Iodine to calcium ratios in marine carbonate as a paleo-redox proxy during oceanic anoxic events, Geology, 38, 1107–1110, https://doi.org/10.1130/G31145.1, 2010.
Lu, Z., Hoogakker, B. A., Hillenbrand, C. D., Zhou, X., Thomas, E., Gutchess, K. M., Lu, W., Jones, L., and Rickaby, R. E.: Oxygen depletion recorded in upper waters of the glacial Southern Ocean, Nat. Commun., 7, 11146, https://doi.org/10.1038/ncomms11146, 2016.
Lu, W., Ridgwell, A., Thomas, E., Hardisty, D. S., Luo, G., Algeo, T. J., Saltzman, M. R., Gill, B. C., Shen, Y., Ling, H. F., and Edwards, C. T.: Late inception of a resiliently oxygenated upper ocean, Science, 361, 174–177, https://doi.org/10.1126/science.aar5372, 2018.
Lu, W., Dickson, A. J., Thomas, E., Rickaby, R. E., Chapman, P., and Lu, Z.: Refining the planktic foraminiferal I
Lu, W., Wang, Y., Oppo, D. W., Nielsen, S. G., and Costa, K. M.: Comparing paleo-oxygenation proxies (benthic foraminiferal surface porosity, I
Lu, Z., Thomas, E., Rickaby, R. E., Lu, W., and Prow, A. N.: Commentary: Planktic foraminifera iodine/calcium ratios from plankton tows, Front. Mar. Sci., 10, 1221835, https://doi.org/10.3389/fmars.2023.1221835 2023.
Luciani, V., D'Onofrio, R., Filippi, G., and Moretti, S.: Which was the habitat of early Eocene planktic foraminifer Chiloguembelina? Stable isotope paleobiology from the Atlantic Ocean and implication for paleoceanographic reconstructions, Global Planet. Change, 191, 103216, https://doi.org/10.1016/j.gloplacha.2020.103216, 2020.
Luo, G., Yang, H., Algeo, T. J., Hallmann, C., and Xie, S.: Lipid biomarkers for the reconstruction of deep-time environmental conditions, Earth-Sci. Rev., 189, 99–124, https://doi.org/10.1016/j.earscirev.2018.03.005, 2019.
Luther, G. W.: Review on the physical chemistry of iodine transformations in the oceans, Front. Mar. Sci., 10, 1085618, https://doi.org/10.3389/fmars.2023.1085618, 2023.
Lutze, G. F.: Variationsstatistik und Ökologie bei rezenten Foraminiferen, Paläontologische Z., 36, 252–264, https://doi.org/10.1007/BF02986977, 1962.
Lutze, G. F.: Statistical investigations on the variability of Bolivina argentea Cushman, Contrib. Cushman Found. Foramin. Res., 15, 105–116, 1964.
Lutze, G. F. and Coulbourn, W. T.: Recent benthic foraminifera from the continental margin of northwest Africa: community structure and distribution, Mar. Micropaleontol., 8, 361–401, https://doi.org/10.1016/0377-8398(84)90002-1, 1984.
Lynch-Stieglitz, J., Stocker, T. F., Broecker, W. S., and Fairbanks, R. G.: The influence of air-sea exchange on the isotopic composition of oceanic carbon: Observations and modelling, Global Biogeochemical Cy., 9, 653–665, https://doi.org/10.1029/95GB02574, 1995.
Lynn D. C. and Bonatti E.: Mobility of manganese in diagenesis of deep-sea sediments, Mar. Geol., 3, 457–474, https://doi.org/10.1016/0025-3227(65)90046-0, 1965.
Ma, J., French, K. L., Cui, X., Bryant, D. A., and Summons, R. E.: Carotenoid biomarkers in Namibian shelf sediments: Anoxygenic photosynthesis during sulfide eruptions in the Benguela Upwelling System, P. Natl. Acad. Sci. USA, 118, e2106040118, https://doi.org/10.1073/pnas.2106040118, 2021.
Mackensen, A. and Douglas, R. G.: Down-core distribution of live and dead deep-water benthic foraminifera in box cores from the Weddell Sea and the California continental borderland, Deep-Sea Res., 36, 879–900, https://doi.org/10.1016/0198-0149(89)90034-4, 1989.
Mackensen, A., Hubberten, H. W., Bickert, T., Fischer, G., and Futterer, D. K.: The δ13C in benthic foraminiferal tests of Fontbotia wuellerstorfi (Schwager) Relative to the δ13C of dissolved inorganic carbon in Southern Ocean Deep Water: Implications for glacial ocean circulation models, Paleocean. Paleoclim., 8, 587–610, https://doi.org/10.1029/93pa01291, 1993.
Mackensen, A. and Licari, L.: Carbon Isotopes of Live Benthic Foraminifera from the South Atlantic: Sensitivity to Bottom Water Carbonate Saturation State and Organic Matter Rain Rates, The South Atlantic in the Late Quaternary: Reconstruction of material budgets and current systems, 623–644, Springer Berlin Heidelberg, ISBN: 978-3-540-21028-3, 2004.
Madison, A. S., Tebo, B. M., Mucci, A., Sundby, B., and Luther, G. W.: Abundant porewater Mn(III) is a major component of the sedimentary redox system, Science, 341, 875–878, https://doi.org/10.1126/science.1241396, 2013.
Mallon, J., Glock, N., and Schönfeld, J.: The response of benthic foraminifera to low-oxygen conditions of the Peruvian oxygen minimum zone, in: Anoxia, edited by: Altenbach, A., Bernhard, J., Seckbach, J., Springer, Dordrecht, Germany, 305–321, https://doi.org/10.1007/978-94-007-1896-8_16, 2012.
Mangini, A., Eisenhauer, A., and Walter, P.: Preliminary Testing of the Model, in: The Relevance of Manganese in the Ocean for the Climatic Cycles in the Quaternary, Berlin, Heidelberg, 19–28, https://doi.org/10.1007/978-3-642-46703-5_2, 1990.
Mangini, A., Jung, M., and Laukenmann, S.: What do we learn from peaks of uranium and of manganese in deep sea sediments?, Mar. Geol., 177, 63–78, https://doi.org/10.1016/S0025-3227(01)00124-4, 2001.
Manno, C., Morata, N., and Bellerby, R.: Effect of ocean acidification and temperature increase on the planktonic foraminifer Neogloboquadrina pachyderma (sinistral), Polar Biol., 5, 1–9, https://doi.org/10.1007/s00300-012-1174-7, 2012.
Marchant, R., Tetard, M., Pratiwi, A., Adebayo, M., and de Garidel-Thoron, T.: Automated analysis of foraminifera fossil records by image classification using a convolutional neural network, J. Micropalaeontol., 39, 183–202, https://doi.org/10.5194/jm-39-183-2020, 2020.
Marconi, D., Kopf, S., Rafter, P. A., and Sigman, D. M.: Aerobic respiration along isopycnals leads to overestimation of the isotope effect of denitrification in the ocean water column, Geochim. Cosmochim. Ac., 197, 417–432, https://doi.org/10.1016/j.gca.2016.10.012, 2017.
Marshall, B. J., Thunell, R. C., Henehan, M. J., Astor, Y., and Wejnert, K. E.: Planktonic foraminiferal area density as a proxy for carbonate ion concentration: A calibration study using the Cariaco Basin ocean time series, Paleocean. Paleoclim., 28, 363–376, https://doi.org/10.1002/palo.20034, 2013.
Martinez, A., Hernández-Terrones, L., Rebolledo-Vieyra, M., and Paytan, A.: Impact of carbonate saturation on large Caribbean benthic foraminifera assemblages, Biogeosciences, 15, 6819–6832, https://doi.org/10.5194/bg-15-6819-2018, 2018.
Martínez-García, A., Jung, J., Ai, X. E., Sigman, D. M., Auderset, A., Duprey, N. N., Foreman, A., Fripiat, F., Leichliter, J., Lüdecke, T., Moretti, S., and Wald, T.: Laboratory Assessment of the Impact of Chemical Oxidation, Mineral Dissolution, and Heating on the Nitrogen Isotopic Composition of Fossil-Bound Organic Matter, Geochem. Geophy. Geosy., 23, e2022GC010396, https://doi.org/10.1029/2022GC010396, 2022.
Margreth, S., Rueggeberg, A., and Spezzaferri, S.: Benthic foraminifera as bioindicator for cold-water coral reef ecosystems along the Irish margin, Deep-Sea Res. Pt. I, 56, 2216–2234, https://doi.org/10.1016/j.dsr.2009.07.009, 2009.
Matthews, A., Azrieli-Tal, I., Benkovitz, A., Bar-Matthews, M., Vance, D., Poulton, S. W., Teutsch, N., Almogi-Labin, A., and Archer, C.: Anoxic development of sapropel S1 in the Nile Fan inferred from redox sensitive proxies, Fe speciation, Fe and Mo isotopes, Chem. Geol., 475, 24–39, https://doi.org/10.1016/j.chemgeo.2017.10.028, 2017.
Matys, E. D., Sepúlveda, J., Pantoja, S., Lange, C. B., Caniupán, M., Lamy, F., and Summons, R. E.: Bacteriohopanepolyols along redox gradients in the Humboldt Current System off northern Chile, Geobiology, 15, 844–857, https://doi.org/10.1111/gbi.12250, 2017.
Mayer, M. H., Parenteau, M. N., Kempher, M. L., Madigan, M. T., Jahnke, L. L., and Welander, P. V.: Anaerobic 3-methylhopanoid production by an acidophilic photosynthetic purple bacterium, Arch. Microbiol., 203, 6041–6052, https://doi.org/10.1007/s00203-021-02561-7, 2021.
McCarthy, M. D., Lehman, J., and Kudela, R.: Compound-specific amino acid δ15N patterns in marine algae: Tracer potential for cyanobacterial vs. eukaryotic organic nitrogen sources in the ocean, Geochim. Cosmochim. Ac., 103, 104–120, https://doi.org/10.1016/j.gca.2012.10.037, 2013.
McConnaughey, T. A., Burdett, J., Whelan, J. F., and Paull, C. K.: Carbon isotopes in biological carbonates: respiration and photosynthesis, Geochim. Cosmochim. Ac., 61, 611–622, https://doi.org/10.1016/S0016-7037(96)00361-4, 1997.
McCorkle, D. C., Emerson, S. R., and Quay, P. D. : Stable carbon isotopes in marine porewaters, Earth Planet. Sc. Lett., 74, 13–26, https://doi.org/10.1016/0012-821X(85)90162-1, 1985.
McCorkle, D. C. and Emerson, S. R.: The relationship between pore water carbon isotopic composition and bottom water oxygen concentration, Geochim. Cosmochim. Ac., 52, 1169–1178, https://doi.org/10.1016/0016-7037(88)90270-0, 1988.
McCorkle, D. C., Keigwin, L. D., Corliss, B. H., and Emerson, S. R.: The influence of microhabitats on the carbon isotopic composition of deep-sea benthic foraminifera, Paleocean. Paleoclim., 6, 161–185, https://doi.org/10.1029/PA005i002p00161, 1990.
McCormick, L. R., Levin, L. A., and Oesch, N. W.: Vision is highly sensitive to oxygen availability in marine invertebrate larvae, J. Exp. Biol., 222, jeb200899, https://doi.org/10.1242/jeb.200899, 2019.
McIlvin, M. R. and Altabet, M. A.: Chemical Conversion of Nitrate and Nitrite to Nitrous Oxide for Nitrogen and Oxygen Isotopic Analysis in Freshwater and Seawater, Anal. Chem., 77, 5589–5595, https://doi.org/10.1021/ac050528s, 2005.
McKay, J. L. and Pedersen, T. F.: Geochemical response to pulsed sedimentation: implications for the use of Mo as a paleo-proxy, Chem. Geol., 382, 83–94, https://doi.org/10.1016/j.chemgeo.2014.05.009, 2014.
McKay, C. L., Groeneveld, J., Filipsson, H. L., Gallego-Torres, D., Whitehouse, M. J., Toyofuku, T., and Romero, O. E.: A comparison of benthic foraminiferal Mn
McKenzie, K. G., Majoran, S., Emami, E., and Reyment, R. A.: The KRITHE problem-first test of peypouquet's hypothesis, with a redescription of KRITHE PRAETEXTA PRAETEXTA (crustacea, ostracoda), Palaeoceanogr. Palaeocl., 75, 343–354, https://doi.org/10.1016/0031-0182(89)90069-2, 1989.
McMahon, K. W., McCarthy, M. D., Sherwood, O. A., Larsen, T., and Guilderson, T. P.: Millennial-scale plankton regime shifts in the subtropical North Pacific Ocean, Science, 350, 1530–1533, https://doi.org/10.1126/science.aaa9942, 2015.
McManus, J., Berelson, W. M., Klinkhammer, G. P., Hammond, D. E., and Holm, C.: Authigenic uranium: Relationship to oxygen penetration depth and organic carbon rain, Geochim. Cosmochim. Ac., 69, 95–108, https://doi.org/10.1016/j.gca.2004.06.023, 2005.
McManus, J., Berelson, W. M., Severmann, S., Poulson, R. L., Hammond, D. E., Klinkhammer, G. P., and Holm, C.: Molybdenum and uranium geochemistry in continental margin sediments: paleoproxy potential, Geochim. Cosmochim. Ac., 70, 4643–4662, https://doi.org/10.1016/j.gca.2006.06.1564, 2006.
Meckler, A. N., Ren, H., Sigman, D. M., Gruber, N., Plessen, B., Schubert, C. J., and Haug, G. H.: Deglacial nitrogen isotope changes in the Gulf of Mexico: Evidence from bulk sedimentary and foraminifera-bound nitrogen in Orca Basin sediments, Paleocean. Paleoclim., 26, 2011PA002156, https://doi.org/10.1029/2011PA002156, 2011.
Mees, F., Swennen, R., Geet, M. V., and Jacobs, P.: Applications of X-ray computed tomography in the geosciences, Geol. Soc. Spec. Publ., 215, 1–6, https://doi.org/10.1144/GSL.SP.2003.215.01.01, 2003.
Meilland, J., Siccha, M., Kaffenberger, M., Bijma, J., and Kucera, M.: Population dynamics and reproduction strategies of planktonic foraminifera in the open ocean, Biogeosciences, 18, 5789–5809, https://doi.org/10.5194/bg-18-5789-2021, 2021.
Mekik, F. and Anderson, R. F.: Is the core top modern? Observations from the eastern equatorial Pacific, Quaternary Sci. Rev., 186, 156–168, https://doi.org/10.1016/j.quascirev.2018.01.020, 2018.
Mena, A., Frances, G., Pérez-Arlucea, M., Aguiar, P., Barreiro-Vázquez, J. D., Iglesias, A., and Barreiro-Lois, A.: A novel sedimentological method based on CT-scanning: Use for tomographic characterization of the Galicia Interior Basin, Dorador, 321, 123–138, https://doi.org/10.1016/j.sedgeo.2015.03.007, 2015.
Menzel, D., Hopmans, E. C., Schouten, S., and Sinninghe Damsté, J. S.: Membrane tetraether lipids of planktonic Crenarchaeota in Pliocene sapropels of the eastern Mediterranean Sea, Palaeogeogr. Palaeocl., 239, 1–15, https://doi.org/10.1016/j.palaeo.2006.01.002, 2006.
Metcalf, W. W., Griffin, B. M., Cicchillo, R. M., Gao, J., Janga, S. C., Cooke, H. A., Circello, B. T., Evans, B. S., Martens-Habbena, W., Stahl, D. A., and van der Donk, W. A.: Synthesis of methylphosphonic acid by marine microbes: A source for methane in the aerobic ocean, Science, 337, 1104–1107, https://doi.org/10.1126/science.1219875, 2012.
Metzger, E., Simonucci, C., Viollier, E., Sarazin, G., Prévot, F., Elbaz-Poulichet, F., Seidel, J. L., and Jézéquel, D.: Influence of diagenetic processes in Thau lagoon on cadmium behavior and benthic fluxes. Estuar. Coast. Shelf Sci., 72, 497–510, https://doi.org/10.1016/j.ecss.2006.11.016, 2007.
Miller, C. A., Peucker-Ehrenbring, B., Walker, B. D., and Marcantonio, F.: Re-assessing the surface cycling of molybdenum and rhenium, Geochim. Cosmochim. Ac., 15, 7146–7179, https://doi.org/10.1016/j.gca.2011.09.005, 2011.
Miller, N., Dougherty, M., Du, R., Sauers, T., Yan, C., Pines, J. E., Meyers, K. L., Dang Y M., Nagle, E., Ni, Z., Pungsrisai, T., Wetherington, M. T., Vorlicek, T. P., Plass, K. E., and Morford, J. L.: Adsorption of Tetrathiomolybdate to Iron Sulfides and its Impact on Iron Sulfide Transformations, ACS Earth Space Chem., 4, 2246–2260, https://doi.org/10.1021/acsearthspacechem.0c00176, 2020.
Millero, F. J.: Chemical Oceanography, 2nd Edn., 469 pp., CRC Press, Boca Raton, Fla, 1996.
Mitra, R., Marchitto, T. M., Ge, Q., Zhong, B., Kanakiya, B., Cook, M. S., Fehrenbacher, J. S., Ortiz, J. D., Tripati, A., and Lobaton, E.: Automated species-level identification of planktic foraminifera using convolutional neural networks, with comparison to human performance, Mar. Micropaleontol., 147, 16–24, https://doi.org/10.1016/j.marmicro.2019.01.005, 2019.
Moffitt, S. E., Hill, T. M., Ohkushi, K., Kennett, J. P., and Behl, R. J.: Vertical oxygen minimum zone oscillations since 20 ka in Santa Barbara Basin: A benthic foraminiferal community perspective, Paleocean. Paleoclim., 29, 44–57, https://doi.org/10.1002/2013PA002483, 2014.
Moffitt, S. E., Moffitt, R. A., Sauthoff, W., Davis, C. V., Hewett, K., and Hill, T. M.: Paleoceanographic insights on recent oxygen minimum zone expansion: lessons for modern oceanography, PloS one, 10, e0115246, https://doi.org/10.1371/journal.pone.0115246, 2015.
Mojtahid, M., Toucanne, S., Fentimen, R., Barras, C., Le Houedec, S., Soulet, G., Bourillet, J.-G., and Michel, E.: Changes in northeast Atlantic hydrology during Termination 1: Insights from Celtic margin's benthic foraminifera, Quaternary Sci. Rev., 175, 45–59, https://doi.org/10.1016/j.quascirev.2017.09.003, 2017.
Moodley, L. and Hess, C.: Tolerance of Infaunal Benthic Foraminifera for low and high oxygen concentrations, Biol. Bull, 183, 94–98, https://doi.org/10.2307/1542410, 1992.
Moodley, L., Van der Zwaan, G. J., Herman, P. M. J., Kempers, L., and Van Breugel, P.: Differential response of benthic meiofauna to anoxia with special reference to Foraminifera (Protista: Sarcodina), Mar. Ecol. Prog. Ser., 158, 151–163, https://doi.org/10.3354/meps158151, 1997.
Morard, R., Quillévéré, F., Escarguel, G., Uijiie, Y., de Garidel-Thoron, T., Norris, R. D., and de Vargas, C.: Morphological recognition of cryptic species in the planktonic foraminifer Orbulina universa, Mar. Micropal., 71, 148–165, https://doi.org/10.1016/j.marmicro.2009.03.001, 2009.
Moretti, S., Auderset, A., Deutsch, C., Schmitz, R., Gerber, L., Thomas, E., Luciani, V., Petrizzo, M. R., Schiebel, R., Tripati, A., Sexton, P., Norris, R., D'Onofrio, R., Zachos, J., Sigman, D. M., Haug, G. H., and Martínez-García, A.: Oxygen rise in the tropical upper ocean during the Paleocene-Eocene Thermal Maximum, Science, 383, 727–731, https://doi.org/10.1126/science.adh4893, 2024.
Morey, A. E., Mix, A. C., and Pisias, N. G.: Planktonic foraminiferal assemblages preserved in surface sediments correspond to multiple environment variables, Quaternary Sci. Rev., 24, 925–950, https://doi.org/10.1016/j.quascirev.2003.09.011, 2005.
Morford, J. L., Emerson, S. R., Breckel, E. J., and Kim, S. H.: Diagenesis of oxyanions (V, U, Re, and Mo) in pore waters and sediments from a continental margin, Geochim. Cosmochim. Ac., 69, 5021–5032, https://doi.org/10.1016/j.gca.2005.05.015, 2005.
Morford, J. L., Martin, W. R., Kalnejais, L. H., François, R., Bothner, M., and Karle, I.-M.: Insights on geochemical cycling of U, Re and Mo from seasonal sampling in Boston Harbor, Massachusetts, USA, Geochim. Cosmochim. Ac., 71, 895–917, https://doi.org/10.1016/j.gca.2006.10.016, 2007.
Morford, J. L. and Emerson, S.: The geochemistry of redox sensitive trace metals in sediments, Geochim. Cosmochim. Ac., 63, 1735–1750, https://doi.org/10.1016/S0016-7037(99)00126-X, 1999.
Morford, J. L., Martin, W. R., and Carney, C. M.: Uranium diagenesis in sediments underlying bottom waters with high oxygen content, Geochim. Cosmochim. Ac., 73, 2920–2937, https://doi.org/10.1016/j.gca.2009.02.014, 2009.
Morgan, J. J.: Kinetics of reaction between O2 and Mn (II) species in aqueous solutions, Geochim. Cosmochim. Ac., 69, 35–48, https://doi.org/10.1016/j.gca.2004.06.013, 2005.
Moriyasu, R., Evans, N., Bolster, K. M., Hardisty, D. S., and Moffett, J. W.: The distribution and redox speciation of iodine in the eastern tropical North Pacific Ocean, Global Biogeochem. Cy., 34, e2019GB006302, https://doi.org/10.1029/2019GB006302, 2020.
Moriyasu, R., Bolster, K. M., Hardisty, D. S., Kadko, D. C., Stephens, M. P., and Moffett, J. W.: Meridional Survey of the Central Pacific Reveals Iodide Accumulation in Equatorial Surface Waters and Benthic Sources in the Abyssal Plain, Global Biogeochem. Cy., 37, e2021GB007300, https://doi.org/10.1029/2021GB007300, 2023.
Morrill, C., Thrasher, B., Lockshin,S. N., Gille, E.P., McNeill, S., Shepherd, E., Gross, W. S., and Bauer, B. A.: The Paleoenvironmental Standard Terms (PaST) Thesaurus: Standardizing Heterogeneous Variables in Paleoscience, Paleocean. Paleoclim., 36, e2020PA004193, https://doi.org/10.1029/2020PA004193, 2021.
Moss, F. R., Shuken, S. R., Mercer, J. A. M., Cohen, C. M., Weiss, T. M., Boxer, S. G., and Burns, N. Z.: Ladderane phospholipids form a densely packed membrane with normal hydrazine and anomalously low proton/hydroxide permeability, P. Natl. Acad. Sci. USA, 115, 9098–9103, https://doi.org/10.1073/pnas.1810706115, 2018.
Mouret, A., Anschutz, P., Lecroart, P., Chaillou, G., Hyacinthe, C., Deborde, J., Jorissen, F. J., Deflandre, B., Schmidt, S., and Jouanneau, J. M.: Benthic geochemistry of manganese in the Bay of Biscay, and sediment mass accumulation rate, Geo-Mar. Lett., 29, 133–149, https://doi.org/10.1007/s00367-008-0130-6, 2009.
Moy, A. D., Howard, W. R., Bray, S. G., and Trull, T. W.: Reduced calcification in modern southern ocean planktonic foraminifera, Nat. Geosci., 2, 276–280, https://doi.org/10.1038/ngeo460, 2009.
Mucci, A.: The behavior of mixed Ca–Mn carbonates in water and seawater: controls of manganese concentrations in marine porewaters, Aquat. Geochem., 10, 139–169, https://doi.org/10.1023/B:AQUA.0000038958.56221.b4, 2004.
Muglia, J., Mulitza, S., Repschläger, J., Schmittner, A., Lembke-Jene, L., Lisiecki, L., Mix, A., Saraswat, R., Sikes, E., Waelbroeck, C., Gottschalk, J., Lippold, J., Lund, D., Martinez-Mendez, G., Michel, E., Muschitiello, F., Naik, S., Okazaki, Y., Stott, L., Voelker, A., and Zhao, N.: A global synthesis of high-resolution stable isotope data from benthic foraminifera of the last deglaciation, Sci. Data, 10, 131, https://doi.org/10.1038/s41597-023-02024-2, 2023.
Mulitza, S., Bickert, T., Bostock, H. C., Chiessi, C. M., Donner, B., Govin, A., Harada, N., Huang, E., Johnstone, H., Kuhnert, H., Langner, M., Lamy, F., Lembke-Jene, L., Lisiecki, L., Lynch-Stieglitz, J., Max, L., Mohtadi, M., Mollenhauer, G., Muglia, J., Nürnberg, D., Paul, A., Rühlemann, C., Repschläger, J., Saraswat, R., Schmittner, A., Sikes, E. L., Spielhagen, R. F., and Tiedemann, R.: World Atlas of late Quaternary Foraminiferal Oxygen and Carbon Isotope Ratios, Earth Syst. Sci. Data, 14, 2553–2611, https://doi.org/10.5194/essd-14-2553-2022, 2022.
Muñoz, P., Dezilaeau, L., Lange, C., Cardenas, L, Sellanes, J., Salamanca, M. A., and Maldonado, A.: Evaluation of sediment trace metal records as paleoproductivity and paleoxygenation proxies in the upwelling center off Concepción, Chile, Prog. Oceanogr., 92–95, 66–80, https://doi.org/10.1016/j.pocean.2011.07.010, 2012.
Muñoz, P., Hevía-Hormazabal, V., Araya, K., Maldonado, A., and Salamanca, M.: Metal enrichment evolution in marine sediments influenced by oxygen-deficient waters in a mineral loading zone, Atacama, Chile (27° S), Mar. Environ. Res., 177, 105619, https://doi.org/10.1016/j.marenvres.2022.105619, 2022.
Muñoz, P., Castillo, A., Valdés, J., and Dewitte, B.: Oxidative conditions along the continental shelf of the Southeast Pacific during the last two millennia: a multiproxy interpretation of the oxygen minimum zone variability from sedimentary records, Front. Mar. Sci., 10, 1134164, https://doi.org/10.3389/fmars.2023.1134164, 2023.
Murray, J. W.: The niche of benthic foraminifera, critical thresholds and proxies, Mar. Micropaleontol., 41, 1–7, https://doi.org/10.1016/S0377-8398(00)00057-8, 2001.
Myhre, S. E., Kroeker, K. J., Hill, T. M., Roopnarine, P., and Kennett, J. P.: Community benthic paleoecology from high-resolution climate records: Mollusca and foraminifera in post-glacial environments of the California margin, Quaternary Sci. Rev., 155, 179–197, https://doi.org/10.1016/j.quascirev.2016.11.009, 2017.
Nakashima, Y. and Komatsubara, J.: Seismically induced soft-sediment deformation structures revealed by X-ray computed tomography of boring cores, Tectonophysics, 683, 138–147, https://doi.org/10.1016/j.tecto.2016.05.044, 2016.
Nardelli, M. P., Barras, C., Metzger, E., Mouret, A., Filipsson, H. L., Jorissen, F., and Geslin, E.: Experimental evidence for foraminiferal calcification under anoxia, Biogeosciences, 11, 4029–4038, https://doi.org/10.5194/bg-11-4029-2014, 2014.
Naeher, S., Schaeffer, P., Adam, P., and Schubert, C. J.: Maleimides in recent sediments – Using chlorophyll degradation products for palaeoenvironmental reconstructions, Geochim. Cosmochim. Ac., 119, 248–263, https://doi.org/10.1016/j.gca.2013.06.004, 2013.
Nägler, T. F., Anbar, A. D., Archer, C., Goldberg, T., Gordon, G. W., Greber, N. D., Siebert, C., Sohrin, Y., and Vance, D.: Proposal for an international molybdenum isotope measurement standard and data representation, Geostand. Geoanal. Res., 38, 149–151, https://doi.org/10.1111/j.1751-908X.2013.00275.x, 2013.
Nakada, R., Tanimizu, M., and Takahashi, Y.: Difference in the stable isotopic fractionations of Ce, Nd, and Sm during adsorption on iron and manganese oxides and its interpretation based on their local structures, Geochim. Cosmochim. Acta, 121, 105–119, https://doi.org/10.1016/j.gca.2013.07.014, 2013.
Nakagawa, Y., Takano, S., Firdaus, M. L., Norisuye, K., Hirata, T., Vance, D., and Sohrin, Y.: The molybdenum isotopic composition of the modern ocean, Geochem. J., 46, 131–141, https://doi.org/10.2343/geochemj.1.0158, 2012.
Nameroff, T. J., Balistrieri, L. S., and Murray, J. W.: Suboxic trace metal geochemistry in the Eastern Tropical North Pacific, Geochim. Cosmochim. Acta, 66, 1139–1158, https://doi.org/10.1016/S0016-7037(01)00843-2, 2002.
Nameroff, T. J., Calvert, S. E., and Murray, J. W.: Glacial-interglacial variability in the eastern tropical North Pacific oxygen minimum zone recorded by redox-sensitive trace metals, Paleocean. Paleoclim., 19, Pa1010, https://doi.org/10.1029/2003PA000912, 2004.
Neubert, N., Nägler, T. F., and Böttcher, M. E.: Sulfidity controls molybdenum isotope fractionation into euxinic sediments: Evidence from the modern Black Sea, Geology, 36, 775–778, https://doi.org/10.1130/G24959A.1, 2008.
Nguyen, T. M. P., Petrizzo, M. R., and Speijer, R. P.: Experimental dissolution of a fossil foraminiferal assemblage (Paleocene–Eocene Thermal Maximum, Dababiya, Egypt): Implications for paleoenvironmental reconstructions, Mar. Micropaleontol., 73, 241–258, https://doi.org/10.1016/j.marmicro.2009.10.005, 2009.
Nguyen, T. M. P., Petrizzo, M. R., Stassen, P., and Speijer, R. P.: Dissolution susceptibility of Paleocene–Eocene planktic foraminifera: Implications for palaeoceanographic reconstructions, Mar. Micropaleontol., 81, 1–21, https://doi.org/10.1016/j.marmicro.2011.07.001, 2011.
Nguyen, T. M. P. and Speijer, R. P.: A new procedure to assess dissolution based on experiments on Pliocene–Quaternary foraminifera (ODP Leg 160, Eratosthenes Seamount, Eastern Mediterranean), Mar. Micropaleontol., 106, 22–39, https://doi.org/10.1016/j.marmicro.2013.11.004, 2014.
Ni, S., Krupinski, N. Q., Groeneveld, J., Persson, P., Somogyi, A., Brinkmann, I., Knudsen, K. L., Seidenkrantz, M. S., and Filipsson, H. L.: Early diagenesis of foraminiferal calcite under anoxic conditions: A case study from the Landsort Deep, Baltic Sea (IODP Site M0063), Chem. Geol., 558, 119871, https://doi.org/10.1016/j.chemgeo.2020.119871, 2020.
Nicolo, M. J., Dickens, G. R., and Hollis, C. J.: South Pacific intermediate water oxygen depletion at the onset of the Paleocene-Eocene thermal maximum as depicted in New Zealand margin sections, Paleocean. Paleoclim., 25, PA4210, https://doi.org/10.1029/2009PA001904, 2010.
Nielsen, S. G., Rehkämper, M., Baker, J., and Halliday, A. N.: The precise and accurate determination of thallium isotope compositions and concentrations for water samples by MC-ICPMS, Chem. Geol., 204, 109–124, https://doi.org/10.1016/j.chemgeo.2003.11.006, 2004.
Nielsen, S. G., Goff, M., Hesselbo, S. P., Jenkyns, H. C., LaRowe, D. E., and Lee, C.-T. A.: Thallium isotopes in early diagenetic pyrite – A paleoredox proxy?, Geochim. Cosmochim. Ac., 75, 6690–6704, https://doi.org/10.1016/j.gca.2011.07.047, 2011.
Nielsen, S. G., Owens, J. D., and Horner, T. J.: Analysis of high-precision vanadium isotope ratios by medium resolution MC-ICP-MS, J. Anal. Atom. Spectrom., 31, 531–536, https://doi.org/10.1039/C5JA00397K, 2016.
Nielsen, S. G., Rehkämper, M., and Prytulak, J.: Investigation and Application of Thallium Isotope Fractionation, Rev. Mineral. Geochem., 82, 759–798, https://doi.org/10.2138/rmg.2017.82.18, 2017.
Nielsen, S. G. (Ed.): Vanadium Isotopes: A Proxy for Ocean Oxygen Variations, Cambridge University Press, Cambridge, United Kingdom, 32 pp., ISBN 9781108863438, 2020.
Niemann, H. and Elvert, M.: Diagnostic lipid biomarker and stable carbon isotope signatures of microbial communities mediating the anaerobic oxidation of methane with sulphate, Org. Geochem., 39, 1668–1677, https://doi.org/10.1016/j.orggeochem.2007.11.003, 2008.
Nomaki, H., Chikaraishi, Y., Tsuchiya, M., Toyofuku, T., Suga, H., Sasaki, Y., Uematsu, K., Tame, A., and Ohkouchi, N.: Variation in the nitrogen isotopic composition of amino acids in benthic foraminifera: Implications for their adaptation to oxygen-depleted environments, Limnol. Oceanogr., 60, 1906–1916, https://doi.org/10.1002/lno.10140, 2015.
Nomaki, H., Chen, C., Oda, K., Tsuchiya, M., Tame, A., Uematsu, K., and Isobe, N.: Abundant Chitinous Structures in Chilostomella (Foraminifera, Rhizaria) and Their Potential Functions, J. Eukaryot. Microbiol., 68, e12828, https://doi.org/10.1111/jeu.12828, 2021.
Nordberg, K., Gustafsson, M., and Krantz, A. L.: Decreasing oxygen concentrations in the Gullmar Fjord, Sweden, as confirmed by benthic foraminifera, and the possible association with NAO, J. Marine Syst., 23, 303–316, https://doi.org/10.1016/S0924-7963(99)00067-6, 2000.
Not, C., Brown, K., Ghaleb, B., and Hillaire-Marcel, C.: Conservative behavior of uranium vs. salinity in Arctic sea ice and brine, Mar. Chem., 130, 33–39, https://doi.org/10.1016/j.marchem.2011.12.005, 2012.
Nowicka, B. and Kruk, J.: Occurrence, biosynthesis and function of isoprenoid quinones, BBA – Bioenergetics, 1797, 1587–1605, https://doi.org/10.1016/j.bbabio.2010.06.007, 2010.
Nozaki, Y.: A fresh look at element distribution in the North Pacific Ocean, Eos, Trans. Am. Geophys. Union, 78, 221–221, https://doi.org/10.1029/97EO00148, 1997.
O'Brien, N. R.: Shale lamination and sedimentary processes, Geol. Soc. Lond. Spec. Publ., 116, 23–26, https://doi.org/10.1144/GSL.SP.1996.116.01.04, 1996.
Ofstad, S., Zamelczyk, K., Kimoto, K., Chierici, M., Fransson, A., and Rasmussen, T. L.: Shell density of planktonic foraminifera and pteropod species Limacina helicina in the Barents Sea: Relation to ontogeny and water chemistry, PLoS ONE, 16, e0249178, https://doi.org/10.1371/journal.pone.0249178, 2021.
Ohkouchi, N., Kashiyama, Y., Kuroda, J., Ogawa, N. O., and Kitazato, H.: The importance of diazotrophic cyanobacteria as primary producers during Cretaceous Oceanic Anoxic Event 2, Biogeosciences, 3, 467–478, https://doi.org/10.5194/bg-3-467-2006, 2006.
Ohkouchi, N., Chikaraishi, Y., Close, H. G., Fry, B., Larsen, T., Madigan, D. J., McCarthy, M. D., McMahon, K. W., Nagata, T., Naito, Y. I., Ogawa, N. O., Popp, B. N., Steffan, S., Takano, Y., Tayasu, I., Wyatt, A. S. J., Yamaguchi, Y. T., and Yokoyama, Y.: Advances in the application of amino acid nitrogen isotopic analysis in ecological and biogeochemical studies, Org. Geochem., 113, 150–174, https://doi.org/10.1016/j.orggeochem.2017.07.009, 2017.
Ohkushi, K., Kennett, J. P., Zeleski, C. M., Moffitt, S. E., Hill, T. M., Robert, C., Beaufort, L., and Behl, R. J.: Quantified intermediate water oxygenation history of the NE Pacific: A new benthic foraminiferal record from Santa Barbara basin, Paleocean. Paleoclim., 28, 453–467, https://doi.org/10.1002/palo.20043, 2013.
Ogawa, N. O., Nagata, T., Kitazato, H., and Ohkouchi, N.: Ultra-sensitive elemental analyzer/isotope ratio mass spectrometer for stable nitrogen and carbon isotope analyses, in: Earth Life Isotopes, edited by: Ohkouchi, N., Tayasu, I., and Koba, K., Kyoto University Press, Kyoto, Japan, 339–353, ISBN-10: 4876989605, 2010.
Oldham, V. E., Owings, S. M., Jones, M. R., Tebo, B. M., and Luther, G. W.: Evidence for the presence of strong Mn(III)- binding ligands in the water column, Mar. Chem. 171, 58–66, https://doi.org/10.1016/j.marchem.2015.02.008, 2015.
Oldham, V. E., Mucci, A., Tebo, B. M., and Luther III, G. W.: Soluble Mn (III)–L complexes are abundant in oxygenated waters and stabilized by humic ligands, Geochim. Cosmochim. Ac., 199, 238–246, https://doi.org/10.1016/j.gca.2016.11.043, 2017.
Oldham, V. E., Jones, M. R., Tebo, B. M., and Luther III, G. W.: Oxidative and reductive processes contributing to manganese cycling at oxic-anoxic interfaces, Mar. Chem., 195, 122–128, https://doi.org/10.1016/j.marchem.2017.06.002, 2017.
Oliver, K. I. C., Hoogakker, B. A. A., Crowhurst, S., Henderson, G. M., Rickaby, R. E. M., Edwards, N. R., and Elderfield, H.: A synthesis of marine sediment core δ13C data over the last 15 000 years, Clim. Past, 6, 645–673, https://doi.org/10.5194/cp-6-645-2010, 2010.
Orr, W. L. and White, C. M. (Eds.): Geochemistry of sulfur in fossil fuels, ACS Symposium Series, American Chemical Society, Washington DC, ISBN 780841218048, https://doi.org/10.1021/bk-1990-0429, 1990.
Orsi, T. H., Edwards, C. M., and Anderson, A. L.: X-ray computed tomography: a nondestructive method for quantitative analysis of sediment cores, J. Sed. Res., 64, 690–693, https://doi.org/10.1306/D4267E74-2B26-11D7-8648000102C1865D, 1994.
Orsi, W. D., Morard, R., Vuillemin, A., Eitel, M., Wörheide, G., Milucka, J., and Kucera, M.: Anaerobic metabolism of Foraminifera thriving below the seafloor, ISME J., 14, 2580–2594, https://doi.org/10.1038/s41396-020-0708-1, 2020.
Oschlies, A., Brandt, P., Stramma, L., and Schmidtko, S.: Drivers and mechanisms of ocean deoxygenation, Nat. Geosci., 11, 467–473, https://doi.org/10.1038/s41561-018-0152-2, 2018.
Oschlies, A.: A committed fourfold increase in ocean oxygen loss, Nat. Commun., 12, 2307, https://doi.org/10.1038/s41467-021-22584-4, 2021.
Owens, J. D., Nielsen, S. G., Horner, T. J., Ostrander, C. M., and Peterson, L. C.: Thallium-isotopic compositions of euxinic sediments as a proxy for global manganese-oxide burial, Geochim. Cosmochim. Ac., 213, 291–307, https://doi.org/10.1016/j.gca.2017.06.041, 2017.
Owens, J. D.: Application of thallium isotopes: Tracking marine oxygenation through manganese oxide burial, Cambridge University Press, Cambridge, United Kingdom, 21 pp., ISBN 9781108688697, https://doi.org/10.1017/9781108688697, 2019.
Pacho, L., de Nooijer, L., and Reichart, G.-J.: Element
Padilla, C. C., Bristow, L. A., Sarode, N., Garcia-Robledo, E., Gómez Ramírez, E., Benson, C. R., Bournonnais, A., Altabet, M. A., Girgius, P. R., Thamdrup, B., and Stewart, F. J.: NC10 bacteria in marine oxygen minimum zones, ISME J., 10, 2067–2071, https://doi.org/10.1038/ismej.2015.262, 2016.
Palmer, H. M., Hill, T. M., Roopnarine, P. D., Myhre, S., Reyes, K. R., and Donnenfield, J. T.: Southern California margin benthic foraminiferal assemblages record recent centennial-scale changes in oxygen minimum zone, Biogeosciences, 17, 2923–2937, https://doi.org/10.5194/bg-17-2923-2020, 2020.
Paoloni, T., Hoogakker, B., Navarro Rodriguez, A., Pereira, R., McClymont, E. L., Jovane, L., and Magill, C.: Composition of planktonic foraminifera test-bound organic material and implications for carbon cycle reconstructions, Front. Mar. Sci., 10, 1237440, https://doi.org/10.3389/fmars.2023.1237440, 2023.
Paradis, S., Nakajima, K., Van der Voort, T. S., Gies, H., Wildberger, A., Blattmann, T. M., Bröder, L., and Eglinton, T. I.: The Modern Ocean Sediment Archive and Inventory of Carbon (MOSAIC): version 2.0, Earth Syst. Sci. Data, 15, 4105–4125, https://doi.org/10.5194/essd-15-4105-2023, 2023.
Pardo, A., Keller, G., Molina, E., and Canudo, J.: Planktic foraminiferal turnover across the Paleocene-Eocene transition at DSDP site 401, Bay of Biscay, North Atlantic, Mar. Micropaleontol., 29, 129–158, https://doi.org/10.1016/S0377-8398(96)00035-7, 1997.
Paropkari, A. L., Babu, C. P., and Mascarenhas, A.: A Critical-Evaluation of Depositional Parameters Controlling the Variability of Organic-Carbon in Arabian Sea Sediments, Mar. Geol., 107, 213–226, https://doi.org/10.1016/0025-3227(92)90168-H, 1992.
Paropkari, A. L., Mascarenhas, A., and Babu, C. P.: Comment on “Lack of enhanced preservation of organic matter in sediments under the oxygen minimum on the Oman Margin” by T. F. Pedersen, G. B. Shimmield, and N. B. Price Geochim. Cosmochim. Ac., 57, 2399–2401, https://doi.org/10.1016/0016-7037(93)90578-K, 1993.
Patterson, R. T. and Fishbein, E.: Re-examination of the statistical methods used to determine the number of point counts needed for micropaleontological quantitative research, J. Paleont., 63, 245–248, 1989.
Pavia, F. J., Wang, S., Middleton, J., Murray, R. W., and Anderson, R. F.: Trace metal evidence for deglacial ventilation of the abyssal Pacific and Southern Oceans, Paleocean. Paleoclim., 36, e2021PA004226, https://doi.org/10.1029/2021PA004226, 2021.
Pawłowska, J., Pawłowski, J., and Zajączkowski, M.: Ancient foraminiferal DNA: A new paleoceanographic proxy., EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-9392, https://doi.org/10.5194/egusphere-egu22-9392, 2022.
Pearson, A., Hurley, S. J., Walter, S. R. S., Kusch, S., Lichtin, S., and Zhang, Y. G.: Stable carbon isotope ratios of intact GDGTs indicate heterogeneous sources to marine sediments, Geochim. Cosmochim. Ac., 181, 18–35, https://doi.org/10.1016/j.gca.2016.02.034, 2016.
Pedersen, T. F., Shimmield, G. B., and Price, N. B.: Lack of enhanced preservation of organic matter in sediments under the oxygen minimum on the Oman Margin, Geochim. Cosmochim. Ac., 56, 545–551, https://doi.org/10.1016/0016-7037(92)90152-9, 1992.
Penn, J. L. and Deutch, C.: Avoiding ocean mass extinction from climate warming, Science, 376, 6592, https://doi.org/10.1126/science.abe9039, 2022.
Perez-Cruz, L. L. and Machain-Castillo, M.L.: Benthic foraminifera of the oxygen minimum zone, continental shelf of the Gulf of Tehuantepec, Mexico, J. Foramin. Res., 20, 312–325, https://doi.org/10.2113/gsjfr.20.4.312, 1990.
Peters, K. E., Walters, C. C., and Moldowan, J. M. (Eds.): The biomarker guide, Vol. 1, Biomarkers in the environment and human history, Cambridge University Press, Cambridge, UK, 471 pp., ISBN 9780511524868, https://doi.org/10.1017/CBO9780511524868, 2005.
Petersen, J., Riedel, B., Barras, C., Pays, O., Guihéneuf, A., Mabilleau, G., Schweizer, M., Meysman, F. J. R., and Jorissen, F.: Improved methodology for measuring pore patterns in the benthic foraminiferal genus Ammonia, Mar. Micropaleontol., 128, 1–13, https://doi.org/10.1016/j.marmicro.2016.08.001, 2016.
Petersen, J., Barras, C., Bézos, A., La, C., de Nooijer, L. J., Meysman, F. J. R., Mouret, A., Slomp, C. P., and Jorissen, F. J.: Mn
Pettit, L. R., Hart, M. B., Medina-Sánchez, A. N., Smart, C. W., Rodolfo-Metalpa, R., Hall-Spencer, J. M., and Prol-Ledesma, R. M.: Benthic foraminifera show some resilience to ocean acidification in the northern Gulf of California, Mexico, Mar. Pollut. Bull., 73, 452–462, https://doi.org/10.1016/j.marpolbul.2013.02.011, 2013.
Phleger, F. B. and Soutar, A.: Production of benthic foraminifera in three east Pacific oxygen minima, Micropaleontology, 19, 110–115, https://doi.org/10.2307/1484973, 1973.
Pike, J., Bernard, J. M., Moreton, S. G., and Butkler, I. B.: Microirrigation of marine sediments in dysoxic environments: implications for early sediment fabric formation and diagenetic processes, Geology, 29, 923–926, https://doi.org/10.1130/0091-7613(2001)029<0923:MOMSID>2.0.CO;2, 2001.
Piña-Ochoa, E., Høgslund, S., Geslin, E., Cedhagen, T., Revsbech, N. P., Nielsen, L. P., Schweizer, M., Jorissen, F., Rysgaard, S., and Risgaard-Petersen, N.: Widespread occurrence of nitrate storage and denitrification among Foraminifera and Gromiida, P. Natl. Acad. Sci. USA, 107, 1148–1153, https://doi.org/10.1073/pnas.0908440107, 2010a.
Piña-Ochoa, E., Koho, K. A., Geslin, E., and Risgaard-Petersen, N.: Survival and life strategy of the foraminiferan Globobulimina turgida through nitrate storage and denitrification, Mar. Ecol. Prog. Ser., 417, 39–49, https://doi.org/10.3354/meps08805, 2010b.
Pizarro, J., Vergara, P. M., Rodríguez, J. A., and Valenzuela, A. M.: Heavy metals in northern Chilean rivers: Spatial variation and temporal trends, J. Hazard. Mater., 181, 747–754, https://doi.org/10.1016/j.jhazmat.2010.05.076, 2010.
Podder, J., Lin, J., Sun, W., Botis, S.M., Tse, J., Chen, N., Hu, Y., Li, D., Seaman, J., and Pan, Y.: Iodate in calcite and vaterite: Insights from synchrotron X-ray absorption spectroscopy and first-principles calculations, Geochim. Cosmochim. Ac., 198, 218–228, https://doi.org/10.1016/j.gca.2016.11.032, 2017.
Polik, C. A., Elling, F. J., and Pearson, A.: Impacts of Paleoecology on the TEX86 Sea Surface Temperature Proxy in the Pliocene-Pleistocene Mediterranean Sea, Paleocean. Paleoclim., 33, 1472–1489, https://doi.org/10.1029/2018PA003494, 2018.
Polissar, P. J., Fulton, J. M., Junium, C. K., Turich, C. C., and Freeman, K. H.: Measurement of 13C and 15N Isotopic Composition on Nanomolar Quantities of C and N, Anal. Chem., 81, 755–763, https://doi.org/10.1021/ac801370c, 2009.
Prahl, F. G., De Lange, G. J., Lyle, M., and Sparrow, M. A.: Post-Depositional Stability of Long-Chain Alkenones under Contrasting Redox Conditions, Nature, 341, 434–437, https://doi.org/10.1038/341434a0, 1989.
Prahl, F. G., Pinto, L. A., and Sparrow, M. A.: Phytane from chemolytic analysis of modern marine sediments: a product of desulfurization or not?, Geochim. Cosmochim. Ac., 60, 1065–73, https://doi.org/10.1016/0016-7037(95)00450-5, 1996.
Prahl, F. G., Pilskaln, C. H., and Sparrow, M. A.: Seasonal record for alkenones in sedimentary particles from the Gulf of Maine, Deep-Sea Res. Pt. I, 48, 515–518, https://doi.org/10.1016/S0967-0637(00)00057-1, 2001.
Prazeres, M., Uthicke, S., and Pandolfi, J. M.: Ocean acidification induces biochemical and morphological changes in the calcification process of large benthic foraminifera, Proc. R. Soc. B, 282, 20142782, https://doi.org/10.1098/rspb.2014.2782, 2015.
Qin, L. and Wang, X.: Chromium Isotope Geochemistry, Rev. Mineral. Geochem., 82, 379–414, https://doi.org/10.2138/rmg.2017.82.10, 2017.
Rabalais, N. N., Turner, R. E., and Wiseman, W. J.: Gulf of Mexico hypoxia, aka “The dead zone”, Annu. Rev. Ecol. Syst., 33, 253–263, https://doi.org/10.1146/annurev.ecolsys.33.010802.150513, 2002.
Rabalais, N. N..: Chapter 5 Eutrophication of estuarine and coastal ecosystems, In: Environmental Microbiology, edited by: Mitchell, R. and Gum J.-D., Wiley, ISBN:9780470177907, 115–134, https://doi.org/10.1002/9780470495117.ch5, 2009.
Rabalais, N. N., Diaz, R. J., Levin, L. A., Turner, R. E., Gilbert, D., and Zhang, J.: Dynamics and distribution of natural and human-caused hypoxia, Biogeosciences, 7, 585–619, https://doi.org/10.5194/bg-7-585-2010, 2010.
Raiswell, R., Hardisty, D.S., Lyons, T. W., Canfield, D. E., Owens, J. D., Planavsky, N. J., Poulton, S. W., and Reinhard, C. T.: The iron paleoredox proxies: A guide to the pitfalls, problems and proper practice, Am. J. Sci., 318, 491–526, https://doi.org/10.2475/05.2018.03, 2018.
Raitzsch, M., Kuhnert, H., Hathorne, E. C., Groeneveld, J., and Bickert, T.: U
Rapp, I., Schlosser, C., Browning, T. J., Wolf, F., Le Moigne, F. A., Gledhill, M., and Achterberg, E. P.: El Niño-driven oxygenation impacts Peruvian shelf iron supply to the South Pacific Ocean, Geophys. Res. Lett., 47, e2019GL086631, https://doi.org/10.1029/2019GL086631, 2020.
Rathburn, A. E., Willingham, J., Ziebis, W., Burkett, A. M., and Corliss, B. H.: A New biological proxy for deep-sea paleo-oxygen: Pores of epifaunal benthic foraminifera, Sci. Rep., 8, 9456, https://doi.org/10.1038/s41598-018-27793-4, 2018.
Raven, M. R., Fike, D. A., Gomes, M. L., Webb, S. M., Bradley, A. S., and McClelland, H.-L. O.: Organic carbon burial during OAE2 driven by changes in the locus of organic matter sulfurization, Nat. Commun., 9, 3409, https://doi.org/10.1038/s41467-018-05943-6, 2018.
Raven, M., Adkins, J. F., Werne, J. P., Lyons, T. W., and Sessions, A. L.: Sulfur isotopic composition of individual organic compounds from Cariaco Basin sediments, Org. Geochem., 80, 53–59, https://doi.org/10.1016/j.orggeochem.2015.01.002, 2015.
Raven, M. R., Keil, R. G., and Webb, S. M.: Microbial sulfate reduction and organic sulfur formation in sinking marine particles, Science, 371, 178–181, https://doi.org/10.1126/science.abc6035, 2021a.
Raven, M. R., Keil, R. G., and Webb, S. M.: Rapid, Concurrent formation of organic sulfur and iron sulfides during experimental sulfurization of sinking marine particles, Global Biogeochem. Cy., 35, e2021GB007062, https://doi.org/10.1029/2021GB007062, 2021b.
Reddin, C. J., Nätscher, P. S., Kocsis, Á. T., Pörtner, H. O., and Kiessling, W.: Marine clade sensitivities to climate change conform across timescales, Nat. Clim. Change, 10, 249–253, https://doi.org/10.1038/s41558-020-0690-7,2020.
Reinhard, C. T., Planavsky, N. J., Wang, X., Fischer, W. W., Johnson, T. M., and Lyons, T. W.: The isotopic composition of authigenic chromium in anoxic marine sediments: A case study from the Cariaco Basin, Earth Planet. Sc. Lett., 407, 9–18, https://doi.org/10.1016/j.epsl.2014.09.024, 2014.
Ren, H., Sigman, D. M., Meckler, A. N., Plessen, B., Robinson, R. S., Rosenthal, Y., and Haug, G. H.: Foraminiferal Isotope Evidence of Reduced Nitrogen Fixation in the Ice Age Atlantic Ocean, Science, 323, 244–248, https://doi.org/10.1126/science.1165787, 2009.
Ren, H., Sigman, D. M., Chen, M.-T., and Kao, S.-J.: Elevated foraminifera-bound nitrogen isotopic composition during the last ice age in the South China Sea and its global and regional implications: FB-δ15N RECORD IN SOUTH CHINA SEA, Glob. Biogeochem. Cy., 26, GB1031, https://doi.org/10.1029/2010GB004020, 2012a.
Ren, H., Sigman, D. M., Thunell, R. C., and Prokopenko, M. G.: Nitrogen isotopic composition of planktonic foraminifera from the modern ocean and recent sediments, Limnol. Oceanogr., 57, 1011–1024, https://doi.org/10.4319/lo.2012.57.4.1011, 2012b.
Reyes-Umana, V., Henning, Z., Lee, K., Barnum, T. P., and Coates, J. D.: Genetic and phylogenetic analysis of dissimilatory iodate-reducing bacteria identifies potential niches across the world's oceans ISME J., 16, 38–49, https://doi.org/10.1038/s41396-021-01034-5, 2022.
Řezanka, T., Siristova, L., Melzoch, K., and Sigler, K.: N-acylated bacteriohopanehexol-mannosamides from the thermophilic bacterium Alicyclobacillus acidoterrestris, Lipids 46, 249–261, https://doi.org/10.1007/s11745-010-3482-4, 2011.
Rhoads, D. C. and Morse, J. W.: Evolutionary and ecologic significance of oxygen-deficient marine basins, Lethaia, 4, 413–428, https://doi.org/10.1111/j.1502-3931.1971.tb01864.x, 1971.
Richirt, J., Champmartin, S., and Schweizer, M., Mouret, A., Petersen, J., Ambari, A., and Jorissen, F.: Scaling laws explain foraminiferal pore patterns, Sci. Rep., 9, 9149, https://doi.org/10.1038/s41598-019-45617-x, 2019.
Richirt, J., Guilhéneuf, A., Mouret, A., Schweizer, M., Slomp, C. P., and Jorissen, F. J.: A historical record of benthic foraminifera in seasonally anoxic Lake Grevelingen, the Netherlands, Palaeogeogr. Palaeocl., 599, 111057, https://doi.org/10.1016/j.palaeo.2022.111057, 2022.
Richmond, T., Cole, J., Dangler, G., Daniele, M., Marchitto, T., and Lobaton, E.: Forabot: Automated planktic foraminifera isolation and imaging, Geochem. Geophy. Geosy., 23, e2022GC010689, https://doi.org/10.1029/2022GC010689, 2022.
Riedinger, N., Scholz, F., Abshire, M. L., and Zabel, M.: Persistent deep water anoxia in the eastern South Atlantic during the last ice age, P. Natl. Acad. Sci., 118, e2107034118, https://doi.org/10.1073/pnas.2107034118, 2021.
Ripperger, S., Rehkämper, M., Porcelli, D., and Halliday, A. N.: Cadmium isotope fractionation in seawater – A signature of biological activity, Earth Planet. Sc. Lett., 261, 670–684, https://doi.org/10.1016/j.epsl.2007.07.034, 2007.
Risgaard-Petersen, N., Langezaal, A. M., Ingvardsen, S., Schmid, M. C., Jetten, M. S., Op den Camp, H. J., Derksen, J. W., Piña-Ochoa, E., Eriksson, S. P., Nielsen, L. P., Revsbech, N. P., Cedhagen, T., and van der Zwaan, G. J.: Evidence for complete denitrification in a benthic foraminifer, Nature, 443, 93–96, https://doi.org/10.1038/nature05070, 2006.
Robinson, R. S. and Sigman, D. M.: Nitrogen isotopic evidence for a poleward decrease in surface nitrate within the ice age Antarctic, Quaternary Sci. Rev., 27, 1076–1090, https://doi.org/10.1016/j.quascirev.2008.02.005, 2008.
Robinson, R. S., Kienast, M., Luiza Albuquerque, A., Altabet, M., Contreras, S., De Pol Holz, R., Dubois, N., Francois, R., Galbraith, E., Hsu, T.-C., Ivanochko, T., Jaccard, S., Kao, S.-J., Kiefer, T., Kienast, S., Lehmann, M., Martinez, P., McCarthy, M., Möbius, J., Pedersen, T., Quan, T. M., Ryabenko, E., Schmittner, A., Schneider, R., Schneider-Mor, A., Shigemitsu, M., Sinclair, D., Somes, C., Studer, A., Thunell, R., and Yang, J.-Y.: A review of nitrogen isotopic alteration in marine sediments: N isotopic alteration in marine sediment, Paleocean. Paleoclim., 27, PA4203, https://doi.org/10.1029/2012PA002321, 2012.
Robinson, R. S., Etourneau, J., Martinez, P. M., and Schneider, R.: Expansion of pelagic denitrification during early Pleistocene cooling, Earth Planet. Sc. Lett., 389, 52–61, https://doi.org/10.1016/j.epsl.2013.12.022, 2014.
Robinson, R. S., Moore, T. C., Erhardt, A. M., and Scher, H. D.: Evidence for changes in subsurface circulation in the late Eocene equatorial Pacific from radiolarian-bound nitrogen isotope values, Paleocean. Paleoclim., 30, 912–922, https://doi.org/10.1002/2015PA002777, 2015.
Rodrigo-Gámiz, M., Rampen, S. W., Schouten, S., and Sinninghe Damsté, J. S.: The impact of oxic degradation on long chain alkyl diol distributions in Arabian Sea surface sediments, Org. Geochem., 100, 1–9, https://doi.org/10.1016/j.orggeochem.2016.07.003, 2016.
Rodríguez-Tovar, F. J. and Uchman, A.: Ichnological data as a useful tool for deep-sea environmental characterization: a brief overview and an application to recognition of small-scale oxygenation changes during the Cenomanian–Turonian anoxic event, Geo.-Mar. Lett., 31, 525–536, https://doi.org/10.1007/s00367-011-0237-z, 2011.
Rodríguez-Tovar, F. J.: Ichnology of the Toarcian Oceanic Anoxic Event: An understimated tool to assess palaeoenvironmental interpretations, Earth-Sci. Rev., 216, 103579, https://doi.org/10.1016/j.earscirev.2021.103579, 2021.
Rodriguez-Tovar, F. J.: Ichnological analysis: A tool to characterize deep-marine processes and sediments, Earth-Sci. Rev., 228, 104014, https://doi.org/10.1016/j.earscirev.2022.104014, 2022.
Rohmer, M., Bouvier-Nave, P., and Ourisson, G.: Distribution of hopanoid triterpenes in prokaryotes, Microbiology, 130, 1137–1150, https://doi.org/10.1099/00221287-130-5-1137, 1984.
Rolison, J. M., Stirling, C. H., Middag, R., and Rijkenberg, M. J.: Uranium stable isotope fractionation in the Black Sea: Modern calibration of the 238U
Rontani, J. F. and Volkman, J. K.: Phytol degradation products as biogeochemical tracers in aquatic environments, Org. Geochem., 34, 1–35, https://doi.org/10.1016/S0146-6380(02)00185-7, 2003.
Rosenberg, Y. O., Kutuzov, I., and Amrani, A.: Sulfurization as a preservation mechanism for the δ13C of biomarkers, Org. Geochem., 125, 66–69, https://doi.org/10.1016/j.orggeochem.2018.08.010, 2018.
Rosenberg, Y. O., Meshoulam, A., Said-Ahmad, W., Shawar, L., Dror, G., Reznik, I. J., Feinstein, S., and Amrani, A.: Study of thermal maturation processes of sulfur-rich source rock using compound specific sulfur isotope analysis, Org. Geochem., 112, 59–74, https://doi.org/10.1016/j.orggeochem.2017.06.005, 2017.
Rosenthal, Y., Boyle, E. A., Labeyrie, L., and Oppo, D.: Glacial enrichments of authigenic Cd And U in subantarctic sediments: A climatic control on the elements' oceanic budget?, Paleocean. Paleoclim., 10, 395–413, https://doi.org/10.1029/95PA00310, 1995.
Ross, B. J. and Hallock, P.: Dormancy in the foraminifera: A review, J. Foramin. Res., 46, 358–368, https://doi.org/10.2113/gsjfr.46.4.358, 2016.
Rossel, P. E., Elvert, M., Ramette, A., Boetius, A., and Hinrichs, K.-U.: Factors controlling the distribution of anaerobic methanotrophic communities in marine environments: Evidence from intact polar membrane lipids, Geochim. Cosmochim, Ac., 75, 164–184, https://doi.org/10.1016/j.gca.2010.09.031, 2011.
Rudnick, R. L. and Gao, S.: Composition of the continental crust, in: Treatise on Geochemistry, Vol. 3, edited by: Holland, H. D. and Turekian, K. K., Elsevier Science, USA, 1–64, https://doi.org/10.1016/B0-08-043751-6/03016-4, 2003.
Rue, E. L., Smith, G. J., Cutter, G. A., and Bruland, K. W.: The response of trace element redox couples to suboxic conditions in the water column, Deep-Sea Res. Pt. I, 44, 113–134, https://doi.org/10.1016/S0967-0637(96)00088-X, 1997.
Rush, D. and Sinninghe Damsté, J. S.: Lipids as paleomarkers to constrain the marine nitrogen cycle: Lipids as paleomarkers, Environ. Microbiol., 19, 2119–2132, https://doi.org/10.1111 %2F1462-2920.13682, 2017.
Rush, D., Jaeschke, A., Hopmans, E. C., Geenevasen, J. A. J., Schouten, S., Sinninghe Damsté, J. S. Short chain ladderanes: Oxic biodegradation products of anammox lipids, Geochim. Cosmochim. Ac., 75, 1662–1671, https://doi.org/10.1016/j.gca.2011.01.013, 2011.
Rush, D., Wakeham, S. G., Hopmans, E. C., Schouten, S., Sinninghe Damsté, J. S.: Biomarker evidence for anammox in the oxygen minimum zone of the Eastern Tropical North Pacific, Org. Geochem., 53, 80–87, https://doi.org/10.1016/j.orggeochem.2012.02.005, 2012.
Rush, D., Sinninghe Damsté, J. S., Poulton, S. W., Thamdrup, B., Garside, A. L., González, J. A., Schouten, S., Jetten, M. S. M., and Talbot, H. M.: Anaerobic ammonium-oxidising bacteria: A biological source of the bacteriohopanetetrol stereoisomer in marine sediments, Geochim. Cosmochim. Ac., 140, 50–64, https://doi.org/10.1016/j.gca.2014.05.014, 2014.
Rush, D., Osborne, K. A., Birgel, D., Kappler, A., Hirayama, H., Peckmann, J., Poulton, S. W., Nickel, J. C., Mangelsdorf, K., Kalyuzhnaya, M., Sidgwick, F. R., and Talbot, H. M.: The bacteriohopanepolyol inventory of novel aerobic methane oxidising bacteria reveals new biomarker signatures of aerobic methanotrophy in marine systems, PLoS ONE, 11, e0165635-27, https://doi.org/10.1371/journal.pone.0165635, 2016.
Rush, D., Talbot, H. M., Meer, M. van der, Hopmans, E. C., Douglas, B., and Sinninghe Damsté, J. S.: Biomarker evidence for the occurrence of anaerobic ammonium oxidation in the eastern Mediterranean Sea during Quaternary and Pliocene sapropel formation, Biogeosciences, 16, 2467–2479, https://doi.org/10.5194/bg-16-2467-2019, 2019.
Russell, A. D., Emerson, S., Nelson, B. K., Erez, J., and Lea, D. W.: Uranium in foraminiferal calcite as a recorder of seawater uranium concentrations, Geochim. Cosmochim. Ac., 58, 671–681, https://doi.org/10.1016/0016-7037(94)90497-9, 1994.
Ryabenko, E.: Stable Isotope Methods for the Study of the Nitrogen Cycle, in: Topics in Oceanography, edited by: Zambianchi, E., InTech, https://doi.org/10.5772/56105, 2013.
Sachs, J. P. and Repeta, D. J.: Oligotrophy and Nitrogen Fixation During Eastern Mediterranean Sapropel Events, Science, 286, 2485–2488, https://doi.org/10.1126/science.286.5449.2485, 1999.
Sáenz, J. P., Waterbury, J. B., Eglinton, T. I., and Summons, R. E.: Hopanoids in marine cyanobacteria: probing their phylogenetic distribution and biological role, Geobiology, 10, 311–319, https://doi.org/10.1111/j.1472-4669.2012.00318.x, 2012.
Sakata, S., Hayes, J. M., Rohmer, M., Hooper, A. B., and Seemann, M.: Stable carbon-isotopic compositions of lipids isolated from the ammonia-oxidizing chemoautotroph Nitrosomonas europaea, Org. Geochem., 39, 1725–1734, https://doi.org/10.1016/j.orggeochem.2008.08.005, 2008.
Salvatteci, R., Guttiéres, D., Field, D., Sifeddine, A., Ortlieb, L., Bouloubassi, I., Boussafir, M., Boucher, M., and Cetin, F.: The response of the Peruvian Upwelling Ecosystem to centennial-scale global change during the last two millennia, Clim. Past, 10, 715–731, https://doi.org/10.5194/cp-10-715-2014, 2014.
Salvatteci, R., Guttiéres, D., Sifeddine, A., Ortlieb, L., Druffel, E., Boussafir, and Schneider, R.: Centennial to millennial-scale changes in oxygenation and productivity in the Eastern Tropical South Pacific during the last 25,000 years, Quaternary Sci. Rev., 131, 102–117, https://doi.org/10.1016/j.quascirev.2015.10.044, 2016.
Sampaio, E., Santos, C., Rosa, I. C., Ferreira, V., Pörtner, H. O., Duarte, C. M., Levin, L. A., and Rosa, R.: Impacts of hypoxic events surpass those of future ocean warming and acidification, Nat. Ecol. Evol., 5, 311–321, https://doi.org/10.1038/s41559-020-01370-3, 2021.
Sarmiento, J. L. and Gruber, N. (Eds.): Ocean Biogeochemical Dynamics, Princeton University Press, New Jersey, USA, 528 pp., ISBN 9780691017075, 2006.
Schaeffer, P., Adam, P., Wehrung, P., and Albrecht, P.: Novel aromatic carotenoid derivatives from sulfur photosynthetic bacteria in sediments, Tetrahedron Lett., 38, 8413–8416, https://doi.org/10.1016/S0040-4039(97)10235-0, 1997.
Schiebel, R. and Hemleben, C.: Planktic Foraminifers in the Modern Ocean, 2nd ed., Springer Berlin, Heidelberg, Berlin, Germany, 358 pp., https://doi.org/10.1007/978-3-662-50297-6, 2017.
Schlitzer, R., Anderson, R. F., Masferrer Dodas, E., et al.: The GEOTRACES Intermediate Data Product 2017, Chem. Geol., 493, 210–223, https://doi.org/10.1016/j.chemgeo.2018.05.040, 2018.
Schmidt, R. A. M.: Microradiography of microfossils with X-ray diffraction equipment, Science, 115, 94–95, https://doi.org/10.1126/science.115.2978.94, 1952.
Schmidt, D. N., Rayfield, E. J., Cocking, A., and Marone, F.: Linking evolution and development: Synchrotron radiation X-ray tomographic microscopy of planktic foraminifers, Palaeontology, 56, 741–749, https://doi.org/10.1111/pala.12013, 2013.
Schmidt, D. N., Thomas, E., Authier, E., Saunders, D., and Ridgwell, A.: Strategies in times of crisis – insights into the benthic foraminiferal record of the Palaeocene–Eocene Thermal Maximum, Philos. T. R. Soc. A., 376, 20170328, https://doi.org/10.1098/rsta.2017.0328, 2018.
Schmidtko, S., Stramma, L., and Visbeck, M.: Decline in global oceanic oxygen content during the past five decades, Nature, 542, 335–339, https://doi.org/10.1038/nature21399, 2017.
Schmiedl, G., Mitschele, A., Beck, S., Emeis, K. C., Hemleben, C., Schulz, H., Sperling, M., and Weldeab, S.: Benthic foraminiferal record of ecosystem variability in the eastern Mediterranean Sea during times of sapropel S5 and S6 deposition, Palaeogeogr. Palaeocl., 190, 139–164, https://doi.org/10.1016/S0031-0182(02)00603-X, 2003.
Schmiedl, G. and Mackensen, A.: Multispecies stable isotopes of benthic foraminifers reveal past changes of organic matter decomposition and deepwater oxygenation in the Arabian Sea, Paleocean. Paleoclim., 21, PA4213, https://doi.org/10.1029/2006PA001284, 2006.
Schmittner, A., Gruber, N., Mix, A. C., Key, R. M., Tagliabue, A., and Westberry, T. K.: Biology and air-sea gas exchange controls on the distribution of carbon isotopes ratios in the ocean, Biogeosciences, 10, 5793–5816, https://doi.org/10.5194/bg-10-5793-2013, 2013.
Schmittner, A., Bostock, H. C., Cartapanis, O., Curry, W. B., Filipsson, H. L., Galbraith, E. D., Gottschalk, J., Herguera, J. C., Hoogakker, B., Jaccard, S. L., Lisiecki, L. E., Lund, D. C., Méndez, G. M., Stieglitz, J. L., Mackensen, A., Michel, E., Mix, A. C., Oppo, D. W., Peterson, C. D., Repschläger, J., Sikes, E. L., Spero, H. J., and Waelbroeck, C.: Calibration of the carbon isotope composition (δ13C) of benthic foraminifera, Paleocean. Paleoclim., 32, 512–530, https://doi.org/10.1002/2016PA003072, 2017.
Scholz, F., Hensen, C., Noffke, A., Rohde, A., Liebetrau, V., and Wallmann, K.: Early diagenesis of redox-sensitive trace metals in the Peru upwelling area – response to ENSO-related oxygen fluctuations in the water column, Geochim. Cosmochim. Ac., 75, 7257–7276, https://doi.org/10.1016/j.gca.2011.08.007, 2011.
Scholz, F., Siebert, C., Dale, A. W., and Frank, M.: Intense molybdenum accumulation in sediments underneath a nitrogenous water column and implications for the reconstruction of paleo-redox conditions based on molybdenum isotopes, Geochim. Cosmochim. Ac., 213, 400–417, https://doi.org/10.1016/j.gca.2017.06.048, 2017.
Schönfeld, J.: Benthic foraminifera and pore-water oxygen profiles: a re-assessment of species boundary conditions at the western Iberian margin, J. Foramin. Res., 31, 86–107, https://doi.org/10.2113/0310086, 2001.
Schönfeld, J.: History and development of methods in Recent benthic foraminiferal studies, J. Micropal., 31, 53–72, https://doi.org/10.1144/0262-821X11-008, 2012.
Schönfeld, J., Golikova, E., Korsun. S., and Spezzaferri, S.: The Helgoland Experiment – assessing the influence of methodologies on Recent benthic foraminiferal assemblage composition, J. Micropal., 32, 161–182, https://doi.org/10.1144/jmpaleo2012-022, 2013.
Schönfeld, F., Glock, N., Polovodova Asteman, I., Roy, A.-R., Warren,M., Weissenbach, J., and Wukovits, J.: Benthic foraminiferal patchiness – revisited, J. Micropal., 42, 171–192, https://doi.org/10.5194/jm-42-171-2023, 2023.
Schouten, S., Hopmans, E. C., and Sinninghe Damsté, J. S.: The organic geochemistry of glycerol dialkyl glycerol tetraether lipids: A review, Org. Geochem., 54, 19–61, https://doi.org/10.1016/j.orggeochem.2012.09.006, 2013a.
Schouten, S., Villareal, T. A., Hopmans, E. C., Mets, A., Swanson, K. M., and Sinninghe Damsté, J. S.: Endosymbiotic heterocystous cyanobacteria synthesize different heterocyst glycolipids than free-living heterocystous cyanobacteria, Phytochemistry, 85, 115–121, https://doi.org/10.1016/j.phytochem.2012.09.002, 2013b.
Schwark, L. and Frimmel, A.: Chemostratigraphy of the Posidonia Black Shale, SW-Germany II. Assessment of extent and persistence of photic-zone anoxia using aryl isoprenoid distributions, Chem. Geol., 206, 231–248, https://doi.org/10.1016/j.chemgeo.2003.12.008, 2004.
Schubert, C. J. and Calvert, S. E.: Nitrogen and carbon isotopic composition of marine and terrestrial organic matter in Arctic Ocean sediments: implications for nutrient utilization and organic matter composition, Deep-Sea Res. Pt. I., 48, 789–810, https://doi.org/10.1016/S0967-0637(00)00069-8, 2001.
Schumacher, S., Jorissen, F. J., Dissard, D., Larkin, K. E., and Gooday, A. J.: Live (Rose Bengal stained) and dead benthic foraminifera from the oxygen minimum zone of the Pakistan continental margin (Arabian Sea), Mar. Micropaleontol., 62, 45–73, https://doi.org/10.1016/j.marmicro.2006.07.004, 2007.
Schwartz-Narbonne, R., Schaeffer, P., Hopmans, E. C., Schenesse, M., Charlton, E. A., Jones, D. M., Sinninghe Damsté, J. S., Haque, M. F. U., Jetten, M. S. M., Lengger, S. K., Murrell, J. C., Normand, P., Nuijten, G. H. L., Talbot, H. M., and Rush, D.: A unique bacteriohopanetetrol stereoisomer of marine anammox, Org. Geochem., 143, 103994, https://doi.org/10.1016/j.orggeochem.2020.103994, 2020.
Scott, C. and Lyons, T. W.: Contrasting molybdenum cycling and isotopic properties in euxinic versus non-euxinic sediments and sedimentary rocks: REFining the paleoproxies, Chem. Geol., 324, 19–27, https://doi.org/10.1016/j.chemgeo.2012.05.012, 2012.
Sáenz, J. P., Waterbury, J. B., Eglinton, T. I., and Summons, R. E.: Hopanoids in marine cyanobacteria: probing their phylogenetic distribution and biological role, Gebiology, 10, 311–319, https://doi.org/10.1111/j.1472-4669.2012.00318.x, 2012.
Sen Gupta, B. K. and Machain-Castillo, M. L.: Benthic foraminifera in oxygen-poor habitats, Mar. Micropaleontol., 20, 183–201, https://doi.org/10.1016/0377-8398(93)90032-S, 1993.
Sen Gupta, B. K., Platon, E., Bernhard, J. M., and Aharon, P.: Foraminiferal colonization of hydrocarbon-seep bacterial mats and underlying sediment, Gulf of Mexico slope, J. Foramin. Res., 27, 292–300, https://doi.org/10.2113/gsjfr.27.4.292, 1997.
Sen Gupta, B. K.: Systematics of modern Foraminifera BT – Modern Foraminifera, edited by: Sen Gupta, B. K., Springer Netherlands, Dordrecht, 7–36, https://doi.org/10.1007/0-306-48104-9_2, 2003.
Seralathan, P. and Hartmann, M.: Molybdenum and vanadium in sediment cores from the NW-African continental margin and their relations to climatic and environmental conditions, Meteor Forschungsergebnisse: Reihe C, Geol. Geophys., 40, 1–17, 1986.
Service, R. F.: New dead zone off Oregon coast hints at sea change in currents, Science, 305, 1099, https://doi.org/10.1126/science.305.5687.1099, 2004.
Severmann, S., Lyons, T. W., Anbar, A., McManus, J., and Gordon, G.: Modern iron isotope perspective on the benthic iron shuttle and the redox evolution of ancient oceans, Geology, 36, 487–490, https://doi.org/10.1130/G24670A.1, 2008.
Sharon, Belanger, C., Du, J., and Mix, A.: Reconstructing paleo-oxygenation for the last 54,000 years in the Gulf of Alaska using cross-validated benthic foraminiferal and geochemical records, Paleocean. Paleoclim., 36, e2020PA003986, https://doi.org/10.1029/2020PA003986, 2021.
Shatz, M., Yosief, T., and Kashman, Y.: Bacteriohopanehexol, a new triterpene from the marine sponge Petrosia species, J. Nat. Prod., 63, 1554–1556, https://doi.org/10.1021/np000190r, 2000.
Shaw, T. J., Gieskes, J. M., and Jahnke, R. A.: Early diagenesis in differing depositional environments: The response of transition metals in pore water, Geochim. Cosmochim. Ac., 54, 1233–1246, https://doi.org/10.1016/0016-7037(90)90149-F, 1990.
Shawar, L., Said-Ahmad, W., Ellis, G. S., and Amrani, A.: Sulfur Isotope composition of individual compounds in immature organic-rich rocks and possible geochemical implications, Geochim. Cosmochim. Ac., 274, 20–44, https://doi.org/10.1016/j.gca.2020.01.034, 2020.
Shawar, L., Grice, K., Holman, A. I., and Amrani, A.: Carbon and Sulfur Isotopic Composition of Alkyl- and Benzo-Thiophenes Provides Insights into Their Origins and Formation Pathways, Org. Geochem., 151, 104163, https://doi.org/10.1016/j.orggeochem.2020.104163, 2021.
Sherwood, O. A., Guilderson, T. P., Batista, F. C., Schiff, J. T., and McCarthy, M. D.: Increasing subtropical North Pacific Ocean nitrogen fixation since the Little Ice Age, Nature, 505, 78–81, https://doi.org/10.1038/nature12784, 2014.
Shiller, A. M. and Boyle, E. A.: Dissolved vanadium in rivers and estuaries, Earth Planet. Sc. Lett., 86, 214–224, https://doi.org/10.1016/0012-821X(87)90222-6, 1987.
Siccha, M., Trommer, G., Schulz, H., Hemleben, C., and Kucera, M.: Factors controlling the distribution of planktonic foraminifera in the Red Sea and implications for the development of transfer functions, Mar. Micropaleontol., 72, 146–156, https://doi.org/10.1016/j.marmicro.2009.04.002, 2009.
Siebert, C., Nägler, T. F., and Kramers, J. D.: Determination of molybdenum isotope fractionation by double-spike multicollector inductively coupled plasma mass spectrometry, Geochem. Geophy. Geosy., 2, 2000GC000124, https://doi.org/10.1029/2000GC000124, 2001
Sigman, D. M., Altabet, M. A., Francois, R., McCorkle, D. C., and Gaillard, J.-F.: The isotopic composition of diatom-bound nitrogen in Southern Ocean sediments, Paleocean. Paleoclim., 14, 118–134, https://doi.org/10.1029/1998PA900018, 1999.
Sigman, D. M., Casciotti, K. L., Andreani, M., Barford, C., Galanter, M., and Böhlke, J. K.: A Bacterial Method for the Nitrogen Isotopic Analysis of Nitrate in Seawater and Freshwater, Anal. Chem., 73, 4145–4153, https://doi.org/10.1021/ac010088e, 2001.
Sigman, D. M., DiFiore, P. J., Hain, M. P., Deutsch, C., Wang, Y., Karl, D. M., Knapp, A. N., Lehmann, M. F., and Pantoja, S.: The dual isotopes of deep nitrate as a constraint on the cycle and budget of oceanic fixed nitrogen, Deep-Sea Res. Pt. I, 56, 1419–1439, https://doi.org/10.1016/j.dsr.2009.04.007, 2009a.
Sigman, D. M., Karsh, K. L., and Casciotti, K. L.: Ocean process tracers: Nitrogen isotopes in the ocean, in: Encyclopedia of Ocean Sciences, edited by: Steele, J. H., Academic Press, Cambridge, Massachusetts, USA, 4138–4153, https://doi.org/10.1006/rwos.2001.0172, 2009b.
Sigman, D. M. and Fripiat, F.: Nitrogen Isotopes in the Ocean, in: Encyclopedia of Ocean Sciences, Elsevier, 263–278, https://doi.org/10.1016/B978-0-12-409548-9.11605-7, 2019.
Singh, A. D., Das, S., and Verma, K.: Impact of climate induced hypoxia on calcifying biota in the Arabian Sea: an evaluation from the micropaleontological records of the Indian margin, Mausam, 62, 647e652, https://doi.org/10.54302/mausam.v62i4.388, 2011.
Singh, A. D., Singh, H., Tripathi, S., and Singh, P.: Evolution and dynamics of the Arabian Sea oxygen minimum zone: Understanding the paradoxes, Evolv, Earth, 1, 100028, https://doi.org/10.1016/j.eve.2023.100028, 2023.
Sinninghe Damsté, J. S., Rijpstra, W. I. C., de Leeuw, J., and Schenck, P. A.: Origin of organic sulphur compounds and sulphur-containing high molecular weight substances in sediments and immature crude oils, Org. Geochem., 13, 593–606, https://doi.org/10.1016/0146-6380(88)90079-4, 1988.
Sinninghe Damsté, J. S., Strous, M., Rijpstra, W. I. C., Hopmans, E. C., Geenevasen, J. A. J., Duin, A. C. T. van, Niftrik, L. A., and vanJetten, M. S. M.: Linearly concatenated cyclobutane lipids form a dense bacterial membrane, Nature, 419, 708–712, https://doi.org/10.1038/nature01128, 2002a.
Sinninghe Damsté, J. S., Schouten, S., Hopmans, E. C., van Duin, A. C. T., and Geenevasen, J. A. J.: Crenarchaeol: the characteristic core glycerol dibiphytanyl glycerol tetraether membrane lipid of cosmopolitan pelagic crenarchaeota, J. Lipid Res., 43, 1641–1651, https://doi.org/10.1194/jlr.m200148-jlr200, 2002b.
Sinninghe Damsté, J. S., Rijpstra, W. I. C., and Reichart, G. J.: The influence of oxic degradation on the sedimentary biomarker record II. Evidence from Arabian Sea sediments, Geochim. Cosmochim. Ac., 66, 2737–2754, https://doi.org/10.1016/S0016-7037(02)00865-7, 2002c.
Sinninghe Damsté, J. S., Kuypers, M. M. M., Schouten, S., Schulte, S., and Rullkötter, J.: The lycopane
Skinner, L. C., Sadekov, A., Brandon, M., Greaves, M., Plancherel, Y., de La Fuente, M., Gottschalk, J., Souanef-Ureta, S., Sevilgen, D. S., and Scrivner, A. E.: Rare Earth Elements in early-diagenetic foraminifer `coatings': Pore-water controls and potential palaeoceanographic applications, Geochim. Cosmochim. Ac., 245, 118–132, https://doi.org/10.1016/j.gca.2018.10.027, 2019.
Sliter, W. V.: Test ultrastructure of some living benthic foraminifers, Lethaia, 7, 5–16, https://doi.org/10.1111/j.1502-3931.1974.tb00880.x, 1974.
Smart, C. W., King, S. C., Gooday, A. J., Murray, J. W., and Thomas, E.: A benthic foraminiferal proxy of pulsed organic matter paleofluxes, Mar. Micropaleontol., 23, 89–99, https://doi.org/10.1016/0377-8398(94)90002-7, 1994.
Smith, P. B.: Ecology of benthonic species, Geol. Surv. Prof. Paper, 429, 1–48, https://doi.org/10.3133/pp429B, 1964.
Smit, N. T., Rush, D., Sahonero-Canavesi, D. X., Verweij, M., Rasigraf, O., Cruz, S. G., Jetten, M. S. M., Sinninghe Damsté, J. S., and Schouten, S.: Demethylated hopanoids in “Ca. Methylomirabilis oxyfera” as biomarkers for environmental nitrite-dependent methane oxidation, Org. Geochem., 137, 103899, https://doi.org/10.1016/j.orggeochem.2019.07.008, 2019.
Sollai, M., Hopmans, E. C., Schouten, S., Keil, R. G., and Sinninghe Damsté, J. S.: Intact polar lipids of Thaumarchaeota and anammox bacteria as indicators of N cycling in the eastern tropical North Pacific oxygen-deficient zone, Biogeosciences, 12, 4725–4737, https://doi.org/10.5194/bg-12-4725-2015, 2015.
Speijer, R. P., Van Loo, D., Masschaele, B., Vlassenbroeck, J., Cnudde, V., and Jacobs P.: Quantifying foraminiferal growth with high-resolution X-ray computed tomography: New opportunities in foraminiferal ontogeny, phylogeny, and paleoceanographic applications, Geosphere, 4, 760–763, https://doi.org/10.1130/GES00176.1, 2008.
Sperling, E. A., Frieder, C. A., Raman, A. V., Girguis, P. R., Levin, L. A., and Knoll, A. H.: Oxygen, ecology, and the Cambrian radiation of animals, P. Natl. Acad. Sci.., 110, 13446–13451, https://doi.org/10.1073/pnas.1312778110, 2013.
Sperling, E. A., Knoll, A. H., and Girguis, P. R.: The ecological physiology of Earth's second oxygen revolution, Ann. Rev. Ecol. Evol. Syst., 46, 215–235, https://doi.org/10.1146/annurev-ecolsys-110512-135808, 2015.
Sperling, E. A., Boag, T. H., Duncan, M. I., Endriga, C. R., Marquez, J. A., Mills, D. B., Monarrez, P. M., Sclafani, J. A., Stockey, R. G., and Payne, J. L.: Breathless through time: oxygen and animals across Earth's history, Biol. Bull., 243, 184–206, https://doi.org/10.1086/721754, 2022.
Stal, L. J.: Is the distribution of nitrogen-fixing cyanobacteria in the oceans related to temperature?, Environ. Microbiol., 11, 1632–1645, https://doi.org/10.1111/j.1758-2229.2009.00016.x, 2009.
Stassen, P., Thomas, E., and Speijer, R. P.: Paleocene–Eocene Thermal Maximum environmental change in the New Jersey Coastal Plain: benthic foraminiferal biotic events, Mar. Micropal., 115, 1–23, https://doi.org/10.1016/j.marmicro.2014.12.001, 2015.
Steen, A. D., Kusch, S., Abdulla, H. A., Cakić, N., Coffinet, S., Dittmar, T., Fulton, J. M., Galy, V., Hinrichs, K. -U., Ingalls, A. E., Koch, B. P., Kujawinski, E., Liu, Z., Osterholz, H., Rush, D., Seidel, M., Sepúlveda, J., and Wakeham, S. G.: Analytical and computational advances, opportunities, and challenges in marine organic biogeochemistry in an era of “omics.”, Front. Mar. Sci., 7, 3815, https://doi.org/10.3389/fmars.2020.00718, 2020.
Steinhardt, J., Cléroux, C., Ullgren, J., de Nooijer, L., Durgadoo, J. V., Brummer, G. J., and Reichart, G. J.: Anti-cyclonic eddy imprint on calcite geochemistry of several planktonic foraminiferal species in the Mozambique Channel, Mar. Micropaleontol., 113, 20–33, https://doi.org/10.1016/j.marmicro.2014.09.001, 2014.
Stirling, C. H., Andersen, M. B., Warthmann, R., and Halliday, A. N.: Isotope fractionation of 238U and 235U during biologically-mediated uranium reduction, Geochim. Cosmochim. Ac., 163, 200–218, https://doi.org/10.1016/j.gca.2015.03.017, 2015.
St-Onge, G., Mulder, T., Francus, P., and Long, B.: Chapter two continuous physical properties of cored marine sediments, Dev. Mar. Geol., 1, 63–98, https://doi.org/10.1016/S1572-5480(07)01007-X, 2007.
Stramma, L., Johnson, G. C., Sprintall, J., and Mohrholz, V.: Expanding Oxygen-Minimum Zones in the Tropical Oceans, Science, 320, 655–658, https://doi.org/10.1126/science.1153847, 2008.
Stramma, L., Schmidtko, S., Levin, L. A., and Johnson, G. C.: Ocean oxygen minima expansions and their biological impacts, Deep-Sea Res. Pt. I, 57, 587–595, https://doi.org/10.1016/J.DSR.2010.01.005, 2010.
Studer, A. S., Martinez-Garcia, A., Jaccard, S. L., Girault, F. E., Sigman, D. M., and Haug, G. H.: Enhanced stratification and seasonality in the Subarctic Pacific upon Northern Hemisphere Glaciation–New evidence from diatom-bound nitrogen isotopes, alkenones and archaeal tetraethers, Earth Planet. Sc. Lett., 351/352, 84–94, https://doi.org/10.1016/j.epsl.2012.07.029, 2012.
Studer, A. S., Ellis, K. K., Oleynik, S., Sigman, D. M., and Haug, G. H.: Size-specific opal-bound nitrogen isotope measurements in North Pacific sediments, Geochim. Cosmochim. Ac., 120, 179–194, https://doi.org/10.1016/j.gca.2013.06.041, 2013.
Studer, A. S., Sigman, D. M., Martínez-García, A., Benz, V., Winckler, G., Kuhn, G., Esper, O., Lamy, F., Jaccard, S. L., Wacker, L., Oleynik, S., Gersonde, R., and Haug, G. H.: Antarctic Zone nutrient conditions during the last two glacial cycles: Antarctic zone nutrient conditions, Paleocean. Paleoclim., 30, 845–862, https://doi.org/10.1002/2014PA002745, 2015.
Studer, A. S., Mekik, F., Ren, H., Hain, M. P., Oleynik, S., Martínez-García, A., Haug, G. H., and Sigman, D. M.: Ice Age-Holocene Similarity of Foraminifera-Bound Nitrogen Isotope Ratios in the Eastern Equatorial Pacific, Paleoceanogr. Paleocl., 36, e2020PA004063, https://doi.org/10.1029/2020PA004063, 2021.
Summons, R. E. and Powell, T. G.: Identification of aryl isoprenoids in source rocksand crude oils: biological markers for the green sulphur bacteria, Geochim. Cosmochim. Ac., 51, 557–566, https://doi.org/10.1016/0016-7037(87)90069-X, 1987.
Sun, X., Kop, L. F. M., Lau, M. C. Y., Frank, J., Jayakumar, A., Lücker, S., and Ward, B. B.: Uncultured Nitrospina-like species are major nitrite oxidizing bacteria in oxygen minimum zones, ISME J., 13, 2391–2402, https://doi.org/10.1038/s41396-019-0443-7, 2019.
Sundby, B. and Silverberg, N.: Manganese fluxes in the benthic boundary layer 1, Limnol. Oceanogr., 30, 372–381, https://doi.org/10.4319/lo.1985.30.2.0372, 1985.
Sundby, B., Martinez, P., and Gobeil, C.: Comparative geochemistry of cadmium, rhenium, uranium, and molybdenum in continental margin sediments, Geochim. Cosmochim. Ac., 68, 2485–2493, https://doi.org/10.1016/j.gca.2003.08.011, 2004.
Suokhrie, T., Saraswat, R., and Nigam, R.: Lack of denitrification causes a difference in benthic foraminifera living in the oxygen deficient zones of the Bay of Bengal and the Arabian Sea, Mar. Pollut. Bull., 153, 110992, https://doi.org/10.1016/j.marpolbul.2020.110992, 2020.
Sweere, T., van den Boorn, S., Dickson, A. J., and Reichart, G.-J.: Definition of new trace-metal proxies for the controls on organic matter enrichment in marine sediments based on Mn, Co, Mo and Cd concentrations, Chem. Geol., 441, 235–245, 2016.
Sweere, T., Hennekam, R., Vance, D., and Reichart, G.-J.: Molybdenum isotope constraints on the temporal development of sulfidic conditions during Mediterranean sapropel intervals, Geochem. Perspect., 17, 16–20, https://doi.org/10.7185/geochemlet.2108, 2021.
Szymczak-Żyla, M., Kowalewska, G., and Louda, J. W.: The influence of microorganisms on chlorophyll a degradation in the marine environment, Limnol. Oceanogr., 53, 851–862, https://doi.org/10.4319/lo.2008.53.2.0851, 2008.
Szymczak-Żyła, M., Krajewska, M., Winogradow, A., Zaborska, A., Breedveld, G. D., and Kowalewska, G.: Tracking trends in eutrophication based on pigments in recent coastal sediments, Oceanologia, 59, 1–17, https://doi.org/10.1016/j.oceano.2016.08.003, 2017.
Takano, Y., Illyina, T., Tiputra, T., Eddebbar, Y. A., Berthet, S., Bopp, L., Buitenhuis, E., Butenschön, M., Christan, J. R., Dunne, J. P., Gröger, M., Hayashida, H., Hieronymus, J., Koenigk, T., Krasting, J., Long, M. C., Lovato, T., Nakano, H., Palmieri, J., Schwinger, J., Séférian, R., Suntharalingam, P., Tatebe, H., Tsujino, H., Urawaka, S., Watanabe, M., and Yool, A.: Simulations of ocean deoxygenation in the historical era: insights from forced and coupled models, Front. Mar. Sci., 10, 1139917, https://doi.org/10.3389/fmars.2023.1139917, 2023.
Talbot, H. M., Watson, D. F., Murrell, J. C., Carter, J. F., and Farrimond, P.: Analysis of intact bacteriohopanepolyols from methanotrophic bacteria by reversed-phase high-performance liquid chromatography-atmospheric pressure chemical ionisation mass spectrometry, J. Chromatogr. A, 921, 175–185, https://doi.org/10.1016/S0021-9673(01)00871-8, 2001.
Talbot, H. M., Summons, R. E., Jahnke, L. L., Cockell, C. S., Rohmer, M., and Farrimond, P.: Cyanobacterial bacteriohopanepolyol signatures from cultures and natural environmental settings, Org. Geochem., 39, 232–263, https://doi.org/10.1016/j.orggeochem.2007.08.006, 2008.
Talbot, H. M., Bischoff, J., Inglis, G. N., Collinson, M. E., and Pancost, R. D.: Polyfunctionalised bio- and geohopanoids in the Eocene Cobham Lignite, Org. Geochem., 96, 77–92, https://doi.org/10.1016/j.orggeochem.2016.03.006, 2016.
Tanaka, A., Nakano, T., and Ikehara, K.: X-ray computerized tomography analysis and density estimation using a sediment core from the Challenger Mound area in the Porcupine Seabight, off Western Ireland, Earth Planet. Space, 63, 103–110, https://doi.org/10.5047/eps.2010.12.006, 2011.
Tarhan, L. G., Droser, M. L., Planavsky, N. J., and Johnston, D. T.: Protracted development of bioturbation through the early Palaeozoic Era, Nat. Geosci., 8, 865–869, https://doi.org/10.1038/ngeo2537, 2015.
Tavera Martínez, L., Marchant, M., Muñoz, P., and Abdala Díaz, R. T.: Spatial and Vertical Benthic Foraminifera Diversity in the Oxygen Minimum Zone of Mejillones Bay, Northern Chile, Front. Mar. Sci., 9, 357, https://doi.org/10.3389/fmars.2022.821564, 2022.
Tebo, B. M., Bargar, J. R., Clement, B., Dick, G., Murray, K. J., Parker, D., Verity, R., and Webb, S. M.: Biogenic manganese oxides: properties and mechanisms of formation, Annu. Rev. Earth Pl. Sc., 32, 287–328, https://doi.org/10.1146/annurev.earth.32.101802.120213, 2004.
Ten Haven, H. L., de Leeuw, J. W., Rullkötter, J., and Sinninghe Damsté J. S.: Restricted utility of the pristane
Tesdal, J.-E., Galbraith, E. D., and Kienast, M.: Nitrogen isotopes in bulk marine sediment: linking seafloor observations with subseafloor records, Biogeosciences, 10, 101–118, https://doi.org/10.5194/bg-10-101-2013, 2013.
Teske, A., Wawer, C., Muyzer, G., and Ramsing, N.B.: Distribution of sulfate-reducing bacteria in a stratified fjord (Mariager Fjord, Denmark) as evaluated by most-probable-number counts and denaturing gradient gel electrophoresis of PCR-amplified ribosomal DNA fragments, Appl. Environ. Microb., 62, 1405–1415, https://doi.org/10.1128/aem.62.4.1405-1415.1996, 1996.
Tessin, A., Chappaz, A., Hendy, I., and Sheldon, N.: Molybdenum speciation as a paleo-redox proxy: A case study from Late Cretaceous Western Interior Seaway black shales, Geology, 47, 59–62, https://doi.org/10.1130/g45785.1, 2018.
Tetard, M., Licari, L., and Beaufort, L.: Oxygen history off Baja California over the last 80 kyr: A new foraminiferal-based record, Paleocean. Paleoclim., 32, 246–264, https://doi.org/10.1002/2016PA003034, 2017.
Tetard, M., Licari, L., Ovsepyan, E., Tachikawa, K., and Beaufort, L.: Toward a global calibration for quantifying past oxygenation in oxygen minimum zones using benthic Foraminifera, Biogeosciences, 18, 2827–2841, https://doi.org/10.5194/bg-18-2827-2021, 2021a.
Tetard, M., Ovsepyan, E., and Licari, L.: Eubuliminella Tenuata as a New Proxy for Quantifying Past Bottom Water Oxygenation, Mar. Micropaleontol., 166, 102016, https://doi.org/10.1016/j.marmicro.2021.102016, 2021b.
Tetard, M., Prebble, J., and Cortese, G.: Dissolved oxygen affinities of hundreds of benthic foraminiferal species, Mar. Micropaleontol., 190, 102380, https://doi.org/10.1016/j.marmicro.2024.102380, 2024.
Thamdrup, B.: New pathways and processes in the global nitrogen cycle, Annu. Rev. Ecol. Evol. S., 43, 407–428, https://doi.org/10.1146/annurev-ecolsys-102710-145048, 2012.
Thamdrup, B., Fossing, H., and Jørgensen, B. B.: Manganese, iron and sulfur cycling in a coastal marine sediment, Aarhus Bay, Denmark, Geochim. Cosmochim. Ac., 58, 5115–5129, https://doi.org/10.1016/0016-7037(94)90298-4, 1994a.
Thamdrup, B., Glud, R. N., and Hansen, J. W.: Manganese oxidation and in situ manganese fluxes from a coastal sediment, Geochim. Cosmochim. Ac., 58, 2563–2570, https://doi.org/10.1016/0016-7037(94)90032-9, 1994b.
Thamdrup, B., Dalsgaard, T., and Revsbech N. P.: Widespread functional anoxia in the oxygen minimum zone of the Eastern South Pacific, Deep-Sea Res., Pt. I, 65, 36–45, https://doi.org/10.1016/j.dsr.2012.03.001, 2012.
Thiel, V., Peckmann, J., Seifert, R., Wehrung, P., Reitner, J., and Michaelis, W.: Highly isotopically depleted isoprenoids: Molecular markers for ancient methane venting, Geochim. Cosmochim. Ac., 63, 3959–3966, https://doi.org/10.1016/S0016-7037(99)00177-5, 1999.
Thomas, N. C., Bradbury, H. J., and Hodell, D. A.: Changes in North Atlantic deep-water oxygenation across the Middle Pleistocene Transition, Science, 377, 654–659, https://doi.org/10.1126/science.abj7761, 2022.
Thomson, J., Brown, L., Nixon, S., Cook, G. T., and MacKenzie, A. B.: Bioturbation and Holocene sediment accumulation fluxes in the north-east Atlantic Ocean (Benthic Boundary Layer experiment sites), Mar. Geol., 169, 21–39, https://doi.org/10.1016/S0025-3227(00)00077-3, 2000.
Tian, C. and Wang, L.: Stable isotope variations of daily precipitation from 2014–2018 in the central United States, Sci. Data, 6, 190018, https://doi.org/10.1038/sdata.2019.18, 2019.
Tissot, F. L. H., Chen, S., Go, B. M., Naziemiec, M., Healy, G., Bekker, A., Swart, P. K., and Dauphas, N.: Controls of eustacy and diagenis on the 238U
Titelboim D., Lord O. T., and Schmidt D. N.: Thermal Stress Reduces Carbonate Production of Benthic Foraminifera and Changes the Material Properties of Their Shells, ICES J. Mar. Sci., 78, 3202–3211, https://doi.org/10.1093/icesjms/fsab186, 2021.
Tjallingii, R., Röhl, U., Kölling, M., and Bickert, T.: Influence of the water content on X-ray fluorescence core-scanning measurements in soft marine sediments, Geochem. Geophy. Geosy., 8, Q02004, https://doi.org/10.1029/2006GC001393, 2007.
Todd C. L., Schmidt D. N., Robinson M. M., and De Schepper S.: Planktic Foraminiferal Test Size and Weight Response to the Late Pliocene Environment, Paleocean. Paleoclim., 35, e2019PA003738, https://doi.org/10.1029/2019PA003738, 2020.
Tossell, J.: Calculating the partitioning of the isotopes of Mo between oxidic and sulfidic species in aqueous solution, Geochim. Cosmochim. Ac., 69, 2981–2993, https://doi.org/10.1016/j.gca.2005.01.016, 2005.
Tribovillard, N., Algeo, T. J., Lyons, T., and Riboulleau, A.: Trace metals as paleoredox and paleoproductivity proxies: An update, Chem. Geol., 232, 12–32, https://doi.org/10.1016/j.chemgeo.2006.02.012, 2006.
Tribovillard, N., Algeo, T. J., Baudin, F., and Riboulleau, A.: Analysis of marine environmental conditions based onmolybdenum–uranium covariation – Applications to Mesozoic paleoceanography, Chem. Geol., 324/325, 46–58, https://doi.org/10.1016/j.chemgeo.2011.09.009, 2012.
Tromp, T. K., Van Cappellen, P., and Key, R. M.: A global model for the early diagenesis of organic carbon and organic phosphorus in marine sediments, Geochim. Cosmochim. Ac., 59, 1259–1284, https://doi.org/10.1016/0016-7037(95)00042-X, 1995.
Truesdale, V. W. and Bailey, G. W.: Dissolved iodate and total iodine during an extreme hypoxic event in the Southern Benguela system, Estuar. Coast. Shelf S., 50, 751–760, https://doi.org/10.1006/ecss.2000.0609, 2000.
Trust, B. A. and Fry, B.: Stable sulphur isotopes in plants: A review, Plant Cell Environ., 15, 1105–1110, https://doi.org/10.1111/j.1365-3040.1992.tb01661.x, 1992.
Tyson, R. V.: Sedimentation rate, dilution, preservation and total organic carbon: some results of a modelling study, Org. Geochem., 32, 333–339, https://doi.org/10.1016/S0146-6380(00)00161-3, 2001.
Umling, N. E. and Thunell, R. C.: Mid-depth respired carbon storage and oxygenation of the eastern equatorial Pacific over the last 25,000 years, Quaternary Sci. Rev., 189, 43–56, https://doi.org/10.1016/j.quascirev.2018.04.002, 2018.
Vairavamurthy, A., Mopper, K., and Taylor, B. F.: Occurrence of particle-bound polysulfides and significance of their reaction with organic matters in marine sediments, Geophys. Res. Lett., 19, 2043–2046, https://doi.org/10.1029/92GL01995, 1992.
Vairavamurthy, A.: Using X-Ray Absorption to Probe Sulfur Oxidation States in Complex Molecules, Spectrochim. Ac. A, 54, 2009–2017, https://doi.org/10.1016/S1386-1425(98)00153-X, 1998.
Valdés, J. and Tapia, J.: Spatial monitoring of metals and As in coastal sediments of northern Chile: An evaluation of background values for the analysis of local environmental conditions, Mar. Pollut. Bull., 145, 624–640, https://doi.org/10.1016/j.marpolbul.2019.06.036, 2019.
Valdés, J., Sifeddine, A., Boussafir, M., and Ortlieb, L.: Redox conditions in a coastal zone of the Humboldt system (Mejillones, 23° S). Influence on the preservation of redox-sensitive metals, J. Geochem. Explor., 140, 1–10, https://doi.org/10.1016/j.gexplo.2014.01.002, 2014.
Valdés, J., Sifeddine, A., Guiñez, M., and Castillo, A.: Oxygen minimum zone variability during the last 700 years in a coastal upwelling area of the Humboldt system (Mejillones, 23° S, Chile). A new approach from geochemical signature, Prog. Oceanogr., 193, 102520, https://doi.org/10.1016/j.pocean.2021.102520, 2021.
Valdés, J., Ortlieb, L., Sifeddine, A., and Castillo, A.: Human-induced metals accumulation in sediments of an industrialized bay of northern Chile. An enrichment and ecological risk assessment based on preindustrial values, Mar. Pollut. Bull., 189, 114723, https://doi.org/10.1016/j.marpolbul.2023.114723, 2023.
Van De Velde, S., Mills, B. J., Meysman, F. J., Lenton, T. M., and Poulton, S. W.: Early Palaeozoic ocean anoxia and global warming driven by the evolution of shallow burrowing, Nat. Commun., 9, 2554, https://doi.org/10.1038/s41467-018-04973-4, 2018.
Van der Weijden, C. H.: Pitfalls of normalization of marine geochemical data using a common divisor, Mar. Geol., 184, 167–187, https://doi.org/10.1016/S0025-3227(01)00297-3, 2002.
Van der Zwaan, G. J., Duijnstee, A. I., Den Dulk, M., Ernst, S. R., Jannink, N. T., and Kouwenhoven, T. J.: Benthic foraminifers: proxies or problems?: a review of paleocological concepts, Earth Sci. Rev., 46, 213–236, https://doi.org/10.1016/S0012-8252(99)00011-2, 1999.
Van Dijk, I., Mouret, A., Cotte, M., Le Houedec, S., Oron, S., Reichart, G.J., Reyes-Herrera, J., Filipsson, H. L. and Barras, C.: Chemical heterogeneity of Mg, Mn, Na, S, and Sr in benthic foraminiferal calcite, Front. Earth Sci., 7, 281, https://doi.org/10.3389/feart.2019.00281, 2019.
Van Dijk, I., De Nooijer, L. J., Barras, C., and Reichart, G. J.: Mn Incorporation in Large Benthic Foraminifera: Differences Between Species and the Impact of pCO2, Front. Earth Sci., 8, 567701, https://doi.org/10.3389/feart.2020.567701, 2020.
van Dongen, B. E., Talbot, H. M., Schouten, S., Pearson, P. N., and Pancost, R. D.: Well preserved Palaeogene and Cretaceous biomarkers from the Kilwa area, Tanzania, Org. Geochem., 37, 539–557, https://doi.org/10.1016/j.orggeochem.2006.01.003, 2006.
van Dongen, B. E., Schouten, S., and Sinninghe Damsté, J. S.: Preservation of carbohydrates through sulfurization in a Jurassic euxinic shelf sea: Examination of the Blackstone Band TOC cycle in the Kimmeridge Clay Formation, UK, Org. Geochem., 37, 1052–73, https://doi.org/10.1016/j.orggeochem.2006.05.007, 2006.
Van Kaam-Peters, H. M. E., Schouten, S., Köster, J., and Sinninghe Damstè, J. S.: Controls on the molecular and carbon isotopic composition of organic matter deposited in a Kimmeridgian euxinic shelf sea: evidence for preservation of carbohydrates through sulfurisation, Geochim. Cosmochim. Ac., 62, 3259–83, https://doi.org/10.1016/S0016-7037(98)00231-2, 1998.
van Kemenade, Z. R., Villanueva, L., Hopmans, E. C., Kraal, P., Witte, H. J., Sinninghe Damsté, J. S., and Rush, D.: Bacteriohopanetetrol-x: constraining its application as a lipid biomarker for marine anammox using the water column oxygen gradient of the Benguela upwelling system, Biogeosciences, 19, 201–221, https://doi.org/10.5194/bg-19-201-2022, 2022.
van Meer, G., Voelker, D. R., and Feigenson, G. W.: Membrane lipids: where they are and how they behave, Nat. Rev. Mol. Cell Biol., 9, 112–124, https://doi.org/10.1038/nrm2330, 2008.
Van Vliet, D. M., Meijenfeldt, F. A. B., Dutilh, B. E., Villanueva, L., Sinninghe Damsté, J. S., Stams, A. J. M., and Sánchez-Andrea, I.: The bacterial sulfur cycle in expanding dysoxic and euxinic marine waters, Environ. Microbiol., 23, 2834–2857, https://doi.org/10.1111/1462-2920.15265, 2021.
Vaquer-Sunyer, R. and Duarte, C.M.: Thresholds of hypoxia for marine biodiversity, P. Natl. Acad. Sci. USA, 105, 15452–15457, https://doi.org/10.1073/pnas.0803833105, 2008.
Vedamati, J., Chan, C., and Moffett, J. W.: Distribution of dissolved manganese in the Peruvian Upwelling and Oxygen Minimum Zone, Geochim. Cosmochim. Ac., 156, 222–240, https://doi.org/10.1016/j.gca.2014.10.026, 2015.
Vickerman, K: The diversity and ecological significance of Protozoa, Biodivers. Conserv., 1, 334–341, https://doi.org/10.1007/BF00693769, 1992.
Volz, J. B., Liu, B., Köster, M., Henkel, S., Koschinsky, A., and Kasten, S.: Post-depositional manganese mobilization during the last glacial period in sediments of the eastern Clarion-Clipperton Zone, Pacific Ocean, Earth Planet. Sci. Lett., 532, 116012, https://doi.org/10.1016/j.epsl.2019.116012, 2020.
Vorlicek, T. P., Chappaz, A., Groskreutz, L. M., Young, N., and Lyons, T. W.: A new analytical approach to determining Mo and Re speciation in sulfidic waters, Chem. Geol., 403, 52–57, https://doi.org/10.1016/j.chemgeo.2015.03.003, 2015.
Wagner, C. L., Stassen, P., Thomas, E., Lippert, P. C., and Lascu, I.: Magnetofossils and benthic foraminifera record changes in food supply and deoxygenation of the coastal marine seafloor during the paleocene-eocene thermal maximum, Paleocean. Paleoclim., 37, e2022PA004502, https://doi.org/10.1029/2022PA004502, 2022.
Wakeham, S. G., Freeman, K. H., Pease, T. K., and Hayes, J. M.: A photoautotrophic source for lycopane in marine water columns, Geochim. Cosmochim. Ac., 57, 159–165, https://doi.org/10.1016/0016-7037(93)90476-d, 1993.
Wakeham, S. G., Sinninghe Damsté, J. S., Kohnen, M. E. L., and De Leeuw, J. W.: Organic sulfur compounds formed during early diagenesis in Black Sea sediments, Geochim. Cosmochim. Ac., 59, 521–33, https://doi.org/10.1016/0016-7037(94)00361-O, 1995.
Wakeham, S. G., Lee, C., Hedges, J. I., Hernes, P. J., and Peterson, M. J.: Molecular indicators of diagenetic status in marine organic matter, Geochim. Cosmochim. Ac., 61, 5363–5369, https://doi.org/10.1016/S0016-7037(97)00312-8, 1997.
Wakeham, S. G., Amann, R., Freeman, K. H., Hopmans, E. C., Jørgensen, B. B., Putnam, I. F., Schouten, S., Sinninghe Damsté, J. S., Talbot, H. M., and Woebken, D.: Microbial ecology of the stratified water column of the Black Sea as revealed by a comprehensive biomarker study, Org. Geochem., 38, 2070–2097, https://doi.org/10.1016/j.orggeochem.2007.08.003, 2007.
Wakeham, S. G.: Organic biogeochemistry in the oxygen-deficient ocean: A review, Org. Geochem., 149, 104096, https://doi.org/10.1016/j.orggeochem.2020.104096, 2020.
Wang, X. T., Prokopenko, M. G., Sigman, D. M., Adkins, J. F., Robinson, L. F., Ren, H., Oleynik, S., Williams, B., and Haug, G. H.: Isotopic composition of carbonate-bound organic nitrogen in deep-sea scleractinian corals: A new window into past biogeochemical change, Earth Planet. Sci. Lett., 400, 243–250, https://doi.org/10.1016/j.epsl.2014.05.048, 2014.
Wang, X. T., Sigman, D. M., Cohen, A. L., Sinclair, D. J., Sherrell, R. M., Weigand, M. A., Erler, D. V., and Ren, H.: Isotopic composition of skeleton-bound organic nitrogen in reef-building symbiotic corals: A new method and proxy evaluation at Bermuda, Geochim. Cosmochim. Ac., 148, 179–190, https://doi.org/10.1016/j.gca.2014.09.017, 2015.
Wang, X., Planavsky, N. J., Reinhard, C. T., Hein, J. R., and Johnson, T. M.: A Cenozoic seawater redox record derived from 238U
Wang, X. T., Sigman, D. M., Cohen, A. L., Sinclair, D. J., Sherrell, R. M., Cobb, K. M., Erler, D. V., Stolarski, J., Kitahara, M. V., and Ren, H.: Influence of open ocean nitrogen supply on the skeletal δ15N of modern shallow-water scleractinian corals, Earth Planet. Sci. Lett., 441, 125–132, https://doi.org/10.1016/j.epsl.2016.02.032, 2016b.
Wang, Y., Hendy, I. L., Latimer, J. C., and Bilardello, D.: Diagenesis and iron paleo-redox proxies: New perspectives from magnetic and iron speciation analyses in the Santa Barbara Basin, Chem. Geol., 519, 95–109, https://doi.org/10.1016/j.chemgeo.2019.04.018, 2019a.
Wang, W. -L., Moore, J. K., Martiny, A. C., and Primeau, F. W.: Convergent estimates of marine nitrogen fixation, Nature, 566, 205–211, https://doi.org/10.1038/s41586-019-0911-2, 2019b.
Wang, Y., Lu, W., Costa, K. M., and Nielsen, S. G.: Beyond anoxia: Exploring sedimentary thallium isotopes in paleo-redox reconstructions from a new core top collection, Geochim. Cosmochim. Ac., 333, 347–361, https://doi.org/10.1016/j.gca.2022.07.022, 2022a.
Wang, X. T., Wang, Y., Auderset, A., Sigman, D. M., Ren, H., Martínez-García, A., Haug, G. H., Su, Z., Zhang, Y. G., Rasmussen, B., Sessions, A. L., and Fischer, W. W.: Oceanic nutrient rise and the late Miocene inception of Pacific oxygen-deficient zones, P. Natl. Acad. Sci., 119, e2204986119, https://doi.org/10.1073/pnas.2204986119, 2022b.
Wang, X., Algeo, T. J., Li, C., and Zhu, M.: Spatial pattern of marine oxygenation set by tectonic and ecological drivers over the Phanerozoic, Nat. Geol., 16, 1020–1026, https://doi.org/10.1038/s41561-023-01296-y, 2023.
Wang, Y., Costa, K. M., Lu, W., Hines, S. K., and Nielsen, S. G.: Global oceanic oxygenation controlled by the Southern Ocean through the last deglaciation, Sci. Adv., 10, eadk2506, https://doi.org/10.1126/sciadv.adk2506, 2024.
Wanty, R. B. and Goldhaber, M. B.: Thermodynamics and Kinetics of Reactions Involving Vanadium in Natural Systems: Accumulation of Vanadium in Sedimentary Rocks, Geochim. Cosmochim. Ac., 56, 1471–1483, https://doi.org/10.1016/0016-7037(92)90217-7, 1992.
Ward, B. B., Tuit, C. B., Jayakumar, A., Rich, J. J., Moffett, J., Wajih, S., and Naqvi, A.: Organic carbon, and not copper, controls denitrification in oxygen minimum zones of the ocean, Deep-Sea Res. Pt. I, 55, 1672–1683, https://doi.org/10.1016/j.dsr.2008.07.005, 2008.
Waser, N., Yin, K., Yu, Z., Tada, K., Harrison, P., Turpin, D., and Calvert, S.: Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability, Mar. Ecol. Prog. Ser., 169, 29–41, https://doi.org/10.3354/meps169029, 1998.
Wehrli, B. and Stumm, W.: Vanadyl in natural waters: Adsorption and hydrolysis promote oxygenation, Geochim. Cosmochim. Ac., 53, 69–77, https://doi.org/10.1016/0016-7037(89)90273-1, 1989.
Weigand, M. A., Foriel, J., Barnett, B., Oleynik, S., and Sigman, D. M.: Updates to instrumentation and protocols for isotopic analysis of nitrate by the denitrifier method: Denitrifier method protocols and instrumentation updates, Rapid Commun. Mass Sp., 30, 1365–1383, https://doi.org/10.1002/rcm.7570, 2016.
Weijers, J. W. H., Lim, K. L. H., Aquilina, A., Sinninghe Damsté, J. S., and Pancost, R. D.: Biogeochemical controls on glycerol dialkyl glycerol tetraether lipid distributions in sediments characterized by diffusive methane flux, Geochem. Geophy. Geosy., 12, Q10010, https://doi.org/10.1029/2011GC003724, 2011.
Welander, P. V. and Summons, R. E.: Discovery, taxonomic distribution, and phenotypic characterization of a gene required for 3-methylhopanoid production, P. Natl. Acad. Sci. USA, 109, 12905–12910, https://doi.org/10.1073/pnas.1208255109, 2012.
Weltje, G. J. and Tjallingii, R.: Calibration of XRF core scanners for quantitative geochemical logging of sediment cores: Theory and application, Earth Planet. Sc. Lett., 274, 423–438, https://doi.org/10.1016/j.epsl.2008.07.054, 2008.
Werne, J. P., Hollander, D. J., Behrens, A., Schaeffer, P., Albrecht, P., and Sinninghe Damsté, J. S.: Timing of Early Diagenetic Sulfurization of Organic Matter: A Precursor-Product Relationship in Holocene Sediments of the Anoxic Cariaco Basin, Venezuela, Geochim. Cosmochim. Ac., 64, 1741–1751, https://doi.org/10.1016/S0016-7037(99)00366-X, 2000.
Westerhold, T., Marwan, N., Drury, A. J., Liebrand, D., Agnini, C., Anagnostou, E., Barnet, J. S. K., Bohaty, S. M., De Vleeschouwer, D., Florindo, F., Frederichs, T., Hodell, D. A., Holbourn, A. E., Kroon, D., Lauretano, V., Littler, K., Lourens, L. J., Lyle, M., Pälike, H., Röhl, U., Tian, J., Wilkens, R. H., Wilson, P. A., and Zachos, J. C.: An astronomically dated record of Earth's climate and its predictability over the last 66 million years, Science, 369, 1383–1387, https://doi.org/10.1126/science.aba6853, 2020.
White, A. E., Foster, R. A., Benitez-Nelson, C. R., Masqué, P., Verdeny, E., Popp, B. N., Arthur, K. E., and Prahl, F. G.: Nitrogen fixation in the Gulf of California and the eastern tropical North Pacific, Prog. Oceanogr., 109, 1–17, https://doi.org/10.1016/j.pocean.2012.09.002, 2013.
Wignall, P. B. and Newton, R.: Pyrite framboid diameter as a measure of oxygen deficiency in ancient mudrocks, Am. J. Sci., 298, 537–552, https://doi.org/10.2475/ajs.298.7.537, 1998.
Wignall, P. B., Newton, R., and Brookfield, M. E.: Pyrite framboid evidence for oxygen-poor deposition during the Permian–Triassic crisis in Kashmir, Palaeogeogr. Palaeocl., 216, 183–188, https://doi.org/10.1016/j.palaeo.2004.10.009, 2005.
Wilfert, P., Krause, S., Liebetrau, V., Schönfeld, J., Haeckel, M., Linke, P., and Treude, T.: Response of anaerobic methanotrophs and benthic foraminifera to 20 years of methane emission from a gas blowout in the North Sea, Mar. Petrol. Geol., 68, 731–742, https://doi.org/10.1016/j.marpetgeo.2015.07.012, 2015.
Wilkin, R. T. and Barnes, H. L.: Pyrite formation in an anoxic estuarine basin, Am. J. Sci., 297, 620–650, https://doi.org/10.2475/ajs.297.6.620, 1997.
Wilkin, R. T., Barnes, H. L., and Brantley, S. L.: The size distribution of framboidal pyrite in modern sediments: an indicator of redox conditions, Geochim. Cosmochim. Ac., 60, 3897–3912, https://doi.org/10.1016/0016-7037(96)00209-8, 1996.
Wilkin, R. T., Arthur, M. A., and Dean, W. E.: History of water-column anoxia in the Black Sea indicated by pyrite framboid size distributions, Earth Planet. Sc. Lett., 148, 517–525, https://doi.org/10.1016/S0016-7037(01)00552-X, 1997.
Wilkinson, M. D., Dumontier, M., Aalbersberg, Ij. J., Appleton, G., Axton, M., Baak, A., Blomberg, N., Boiten, J.-W., Santos, L. B. da S., Bourne, P. E., Bouwman, J., Brookes, A. J., Clark, T., Crosas, M., Dillo, I., Dumon, O., Edmunds, S., Evelo, C. T., Finkers, R., Gonzalez-Beltran, A., Gray, A. J. G., Groth, P., Goble, C., Grethe, J. S., Heringa, J., Hoen, P. A. C. 't, Hooft, R., Kuhn, T., Kok, R., Kok, J., Lusher, S. J., Martone, M. E., Mons, A., Packer, A. L., Persson, B., Rocca-Serra, P., Roos, M., van Schaik, R., Sansone, S.-A., Schultes, E., Sengstag, T., Slater, T., Strawn, G., Swertz, M. A., Thompson, M., Lei, J. van der, van Mulligen, E., Velterop, J., Waagmeester, A., Wittenburg, P., Wolstencroft, K., Zhao, J., and Mons, B.: The FAIR Guiding Principles for scientific data management and stewardship, Sci. Data, 3, 1–9, https://doi.org/10.1038/sdata.2016.18, 2016.
Winkelbauer, H. A., Cordova-Rodriguez, K., Reyes-Macaya, D., Scott, J., Glock, N., Lu, Z., Hamilton, E., Chenery, S., Holdship, P., Dormon, C., and Hoogakker, B.: Foraminifera iodine to calcium ratios: approach and cleaning, Geochem. Geophy. Geosy., 22, e2021GC009811, https://doi.org/10.1029/2021GC009811, 2021.
Winkelbauer, H. A., Hoogakker, B. A., Chance, R. J., Davis, C. V., Anthony, C. J., Bischoff, J., Carpenter, L. J., Chenery, S., Hamilton, E. M., Holdship, P., and Peck, V. L.: Planktic foraminifera iodine/calcium ratios from plankton tows, Front. Mar. Sci., 10, 179, https://doi.org/10.3389/fmars.2023.1095570, 2023.
Woehle, C., Roy, A. S., Glock, N., Wein, T., Weissenbach, J., Rosenstiel, P., Hiebenthal, C., Michels, J., Schönfeld, J., and Dagan, T.: A novel eukaryotic denitrification pathway in foraminifera, Curr. Biol., 28, 2536–2543, https://doi.org/10.1016/j.cub.2018.06.027, 2018.
Woehle, C., Roy, A.-S., Glock, N., Michels, J., Wein, T., Weissenbach, J., Romero, D., Hiebenthal, C., Gorb, S. N., Schönfeld, J., and Dagan, T.: Denitrification in foraminifera has an ancient origin and is complemented by associated bacteria, P. Natl. Acad. Sci. USA, 119, e2200198119, https://doi.org/10.1073/pnas.2200198119, 2022.
Wollenburg, J., Raitzsch, M., and Tiedemann, R.: Novel high-pressure culture experiments on deep-sea benthic foraminifera – Evidence for methane seepage-related δ13C of Cibicides wuellerstorfi, Mar. Micropal., 117, 47–64, https://doi.org/10.1016/j.marmicro.2015.04.003, 2015.
Wollenburg, J. E., Bijma, J., Cremer, C., Bickmeyer, U., and Colombo Zittier, Z. M.: Permanent ectoplasmic structures in deep-sea Cibicides and Cibicidoides taxa – long-term observations at in situ pressure, Biogeosciences 18, 3903–3915, https://doi.org/10.5194/bg-18-3903-2021, 2021.
Wörmer, L., Lipp, J. S., Schröder, J. M., and Hinrichs, K.-U.: Application of two new LC–ESI–MS methods for improved detection of intact polar lipids (IPLs) in environmental samples, Org. Geochem., 59, 10–21, https://doi.org/10.1016/j.orggeochem.2013.03.004, 2013.
Woulds, C., Andersson, J. H., Cowie, G. L., Middelburg, J. J., and Levin, L. A.: The short-term fate of organic carbon in marine sediments: Comparing the Pakistan margin to other regions, Deep-Sea Res. Pt. II, 56, 393–402, https://doi.org/10.1016/j.dsr2.2008.10.008, 2009.
Wu, F., Qi, Y., Yu, H., Tian, S., Hou, Z., and Huang, F.: Vanadium isotope measurement by MC-ICP-MS, Chem. Geol., 421, 17–25, https://doi.org/10.1016/j.chemgeo.2015.11.027, 2016.
Yu, J., Elderfield, H., Jin, Z., and Booth, L.: A strong temperature effect on U
Xie, S., Liu, X.-L., Schubotz, F., Wakeham, S. G., and Hinrichs, K.-U.: Distribution of glycerol ether lipids in the oxygen minimum zone of the Eastern Tropical North Pacific Ocean, Org. Geochem., 71, 60–71, https://doi.org/10.1016/j.orggeochem.2014.04.006, 2014.
Yevenes, M. A., Figueroa, R., and Parra, O.: Seasonal drought effects on the water quality of the Biobío River, Central Chile, Environ. Sci. Pollut. Res., 25, 13844–13856, https://doi.org/10.1007/s11356-018-1415-6, 2018.
Zahn, R., Winn, K., and Sarnthein, M.: Benthic foraminiferal δ13C and accumulation rates of organic carbon: Uvigerina peregrina group and Cibicidoides wuellerstorfi, Paleocean. Paleoclim., 1, 27–42, https://doi.org/10.1029/PA001i001p00027, 1986.
Zarkogiannis, S. D., Iwasaki, S., Rae, J. W. B., Schmidt, M. W., Mortyn, P. G., Kontakiotis, G., Hertzberg, J. E., and Rickaby, R. E. M.: Calcification, Dissolution and Test Properties of Modern Planktonic Foraminifera From the Central Atlantic Ocean, Front. Mar. Sci., 9, 64801, https://doi.org/10.3389/fmars.2022.864801, 2022.
Zarriess, M. and Mackensen, A.: Testing the impact of seasonal phytodetritus deposition on δ13C of epibenthic foraminifer Cibicidoides wuellerstorfi: A 31,000 year high-resolution record from the northwest African continental slope, Paleocean. Paleoclim., 26, PA2202, https://doi.org/10.1029/2010PA001944, 2011.
Zhang, F., Romaniello, S. J., Algeo, T. J., Lau, K. V., Clapham, M. E., Richoz, S., Herrmann, A. D., Smith, H., Horacek, M., and Anbar, A. D.: Multiple episodes of extensive marine anoxia linked to global warming and continental weathering following the latest Permian mass extinction, Sci. Adv., 4, e1602921, https://doi.org/10.1126/sciadv.1602921, 2018.
Zhang, F., Lenton, T. M., del Rey, Á., Romaniello, S. J., Chen, X., Planavsky, N. J., Clarkson, M. O., Dahl, T. W., Lau, K. V., and Wang, W.: Uranium isotopes in marine carbonates as a global ocean paleoredox proxy: a critical review, Geochim. Cosmochim. Ac., 287, 27–49, https://doi.org/10.1016/j.gca.2020.05.011, 2020.
Zhang, F., Stockey, R. G., Xiao, S., Shen, S.-Z., Dahl, T. W., Wei, G.-Y., Cao, M., Li, Z., Kang, J., Anbar, A. D., and Planavsky, N. J.: Uranium isotope evidence for extensive shallow water anoxia in the early Tonian oceans, Earth Planet. Sc. Lett., 583, 117437, https://doi.org/10.1016/j.epsl.2022.117437, 2022.
Zheng, Y., Anderson, R. F., van Geen, A., and Fleisher, M. Q.: Preservation of particulate non-lithogenic uranium in marine sediments, Geochim. Cosmochim. Ac., 66, 3085–3092, https://doi.org/10.1016/S0016-7037(01)00632-9, 2002a.
Zheng, Y., Anderson, R. F., van Geen, A., and Fleisher, M. Q.: Remobilization of authigenic uranium in marine sediments by bioturbation, Geochim. Cosmochim. Ac., 66, 1759–1772, https://doi.org/10.1016/S0016-7037(01)00886-9, 2002b.
Zehr, J. P.: Nitrogen fixation by marine cyanobacteria, Trends Microbiol., 19, 162–173, https://doi.org/10.1016/j.tim.2010.12.004, 2011.
Zhou, X., Thomas, E., Rickaby, R. E. M., Winguth, A. M. E., and Lu, Z.: I
Zhou, X., Thomas, E., Winguth, A. M. E., Ridgwell, A., Scher, H., Hoogakker, B. A. A., Rickaby, R. E. M., and Lu, Z.: Expanded oxygen minimum zones during the late Paleocene-early Eocene: Hints from multiproxy comparison and ocean modeling, Paleocean. Paleoclim. 31, 1532–1546, https://doi.org/10.1002/2016PA003020, 2016.
Zhou, X., Hess, A. V., Bu, K., Sagawa, T., and Rosenthal, Y.: Simultaneous determination of I
Zhou, Y. and McManus, J. F.: Authigenic uranium deposition in the glacial North Atlantic: Implications for changes in oxygenation, carbon storage, and deep water-mass geometry, Quaternary Sci. Rev., 300, 107914, https://doi.org/10.1016/j.quascirev.2022.107914, 2023.
Zindorf, M., Rush, D., Jaeger, J., Mix, A., Penkrot, M. L., Schnetger, B., Sidgwick, F. R., Talbot, H. M., Land, C. van der, Wagner, T., Walczak, M., and März, C.: Reconstructing oxygen deficiency in the glacial Gulf of Alaska: Combining biomarkers and trace metals as paleo-redox proxies, Chem. Geol., 558, 119864, https://doi.org/10.1016/j.chemgeo.2020.119864, 2020.
Zonneveld, K. A. F., Versteegh, G. J. M., Kasten, S., Eglinton, T.I., Emeis, K. C., Huguet, C., Koch, B. P., de Lange, G. J., de Leeuw, J. W., Middelburg, J. J., Mollenhauer, G., Prahl, F. G., Rethemeyer, J., and Wakeham, S. G.: Selective preservation of organic matter in marine environments; processes and impact on the sedimentary record, Biogeosciences, 7, 483–511, https://doi.org/10.5194/bg-7-483-2010, 2010.
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Paleo-oxygen proxies can extend current records, constrain pre-anthropogenic baselines, provide datasets necessary to test climate models under different boundary conditions, and ultimately understand how ocean oxygenation responds on longer timescales. Here we summarize current proxies used for the reconstruction of Cenozoic seawater oxygen levels. This includes an overview of the proxy's history, how it works, resources required, limitations, and future recommendations.
Paleo-oxygen proxies can extend current records, constrain pre-anthropogenic baselines, provide...
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