Articles | Volume 20, issue 3
https://doi.org/10.5194/bg-20-597-2023
© Author(s) 2023. 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-20-597-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
06 Feb 2023
Research article |
| 06 Feb 2023
| 06 Feb 2023
Nature and origin of variations in pelagic carbonate production in the tropical ocean since the mid-Miocene (ODP Site 927)
MARUM – Centre for Marine Environmental
Sciences, University of Bremen, Leobener Straße 8, 28359 Bremen, Germany
Thomas Westerhold
MARUM – Centre for Marine Environmental
Sciences, University of Bremen, Leobener Straße 8, 28359 Bremen, Germany
Heiko Pälike
MARUM – Centre for Marine Environmental
Sciences, University of Bremen, Leobener Straße 8, 28359 Bremen, Germany
Torsten Bickert
MARUM – Centre for Marine Environmental
Sciences, University of Bremen, Leobener Straße 8, 28359 Bremen, Germany
Karl-Heinz Baumann
Geoscience Department, University of Bremen, Klagenfurter Straße,
P.O. Box 330440, 28359 Bremen, Germany
Michal Kucera
MARUM – Centre for Marine Environmental
Sciences, University of Bremen, Leobener Straße 8, 28359 Bremen, Germany
Related authors
No articles found.
Julia de Entrambasaguas, Thomas Westerhold, Heather L. Jones, and Laia Alegret
J. Micropalaeontol., 43, 303–322, https://doi.org/10.5194/jm-43-303-2024, https://doi.org/10.5194/jm-43-303-2024, 2024
Short summary
Short summary
The Gulf Stream plays a crucial role in the ocean stability and climate regulation of the Northern Hemisphere. By analysing the fossil microorganisms that lived in the water column and the ocean floor, as well as reconstructing the ancient ocean's biogeochemistry, we were able to trace longitudinal shifts in the Gulf Stream during the late Eocene (36 Ma). Our results provide insight into the Gulf Stream's behaviour and the NW Atlantic's palaeoceanography during the Late Eocene (ca. 36 Ma).
Marci M. Robinson, Kenneth G. Miller, Tali L. Babila, Timothy J. Bralower, James V. Browning, Marlow J. Cramwinckel, Monika Doubrawa, Gavin L. Foster, Megan K. Fung, Sean Kinney, Maria Makarova, Peter P. McLaughlin, Paul N. Pearson, Ursula Röhl, Morgan F. Schaller, Jean M. Self-Trail, Appy Sluijs, Thomas Westerhold, James D. Wright, and James C. Zachos
Sci. Dril., 33, 47–65, https://doi.org/10.5194/sd-33-47-2024, https://doi.org/10.5194/sd-33-47-2024, 2024
Short summary
Short summary
The Paleocene–Eocene Thermal Maximum (PETM) is the closest geological analog to modern anthropogenic CO2 emissions, but its causes and the responses remain enigmatic. Coastal plain sediments can resolve this uncertainty, but their discontinuous nature requires numerous sites to constrain events. Workshop participants identified 10 drill sites that target the PETM and other interesting intervals. Our post-drilling research will provide valuable insights into Earth system responses.
Heather M. Stoll, Leopoldo D. Pena, Ivan Hernandez-Almeida, José Guitián, Thomas Tanner, and Heiko Pälike
Clim. Past, 20, 25–36, https://doi.org/10.5194/cp-20-25-2024, https://doi.org/10.5194/cp-20-25-2024, 2024
Short summary
Short summary
The Oligocene and early Miocene periods featured dynamic glacial cycles on Antarctica. In this paper, we use Sr isotopes in marine carbonate sediments to document a change in the location and intensity of continental weathering during short periods of very intense Antarctic glaciation. Potentially, the weathering intensity of old continental rocks on Antarctica was reduced during glaciation. We also show improved age models for correlation of Southern Ocean and North Atlantic sediments.
Mariem Saavedra-Pellitero, Karl-Heinz Baumann, Nuria Bachiller-Jareno, Harold Lovell, Nele Manon Vollmar, and Elisa Malinverno
EGUsphere, https://doi.org/10.5194/egusphere-2023-2801, https://doi.org/10.5194/egusphere-2023-2801, 2023
Short summary
Short summary
In this manuscript we combine micropalaeontology and remote-sensing. We compare the calcium carbonate produced by tiny marine algae called coccolithophores to satellite-derived particulate organic carbon in the Southern Ocean. They show good agreement north of the polar front, but hugely differ south of it. We argue that those highly reflective values could be due to small opal particles and we highlight the need to improve satellite algorithms in this unexplored part of the ocean.
Sabrina Hohmann, Michal Kucera, and Anne de Vernal
Clim. Past, 19, 2027–2051, https://doi.org/10.5194/cp-19-2027-2023, https://doi.org/10.5194/cp-19-2027-2023, 2023
Short summary
Short summary
Drivers for dinocyst assemblage compositions differ regionally and through time. Shifts in the assemblages can sometimes only be interpreted robustly by locally and sometimes globally calibrated transfer functions, questioning the reliability of environmental reconstructions. We suggest the necessity of a thorough evaluation of transfer function performance and significance for downcore applications to disclose the drivers for present and fossil dinocyst assemblages in a studied core location.
Michal Kučera and Geert-Jan A. Brummer
J. Micropalaeontol., 42, 33–34, https://doi.org/10.5194/jm-42-33-2023, https://doi.org/10.5194/jm-42-33-2023, 2023
Ji-Eun Kim, Thomas Westerhold, Laia Alegret, Anna Joy Drury, Ursula Röhl, and Elizabeth M. Griffith
Clim. Past, 18, 2631–2641, https://doi.org/10.5194/cp-18-2631-2022, https://doi.org/10.5194/cp-18-2631-2022, 2022
Short summary
Short summary
This study attempts to gain a better understanding of the marine biological carbon pump and ecosystem functioning under warmer-than-today conditions. Our records from marine sediments show the Pacific tropical marine biological carbon pump was driven by variations in seasonal insolation in the tropics during the Late Cretaceous and may play a key role in modulating climate and the carbon cycle globally in the future.
Franziska Tell, Lukas Jonkers, Julie Meilland, and Michal Kucera
Biogeosciences, 19, 4903–4927, https://doi.org/10.5194/bg-19-4903-2022, https://doi.org/10.5194/bg-19-4903-2022, 2022
Short summary
Short summary
This study analyses the production of calcite shells formed by one of the main Arctic pelagic calcifiers, the foraminifera N. pachyderma. Using vertically resolved profiles of shell concentration, size and weight, we show that calcification occurs throughout the upper 300 m with an average production flux below the calcification zone of 8 mg CaCO3 m−2 d−1 representing 23 % of the total pelagic biogenic carbonate production. The production flux is attenuated in the twilight zone by dissolution.
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
Short summary
Short summary
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.
David De Vleeschouwer, Marion Peral, Marta Marchegiano, Angelina Füllberg, Niklas Meinicke, Heiko Pälike, Gerald Auer, Benjamin Petrick, Christophe Snoeck, Steven Goderis, and Philippe Claeys
Clim. Past, 18, 1231–1253, https://doi.org/10.5194/cp-18-1231-2022, https://doi.org/10.5194/cp-18-1231-2022, 2022
Short summary
Short summary
The Leeuwin Current transports warm water along the western coast of Australia: from the tropics to the Southern Hemisphere midlatitudes. Therewith, the current influences climate in two ways: first, as a moisture source for precipitation in southwestern Australia; second, as a vehicle for Equator-to-pole heat transport. In this study, we study sediment cores along the Leeuwin Current pathway to understand its ocean–climate interactions between 4 and 2 Ma.
Geert-Jan A. Brummer and Michal Kučera
J. Micropalaeontol., 41, 29–74, https://doi.org/10.5194/jm-41-29-2022, https://doi.org/10.5194/jm-41-29-2022, 2022
Short summary
Short summary
To aid researchers working with living planktonic foraminifera, we provide a comprehensive review of names that we consider appropriate for extant species. We discuss the reasons for the decisions we made and provide a list of species and genus-level names as well as other names that have been used in the past but are considered inappropriate for living taxa, stating the reasons.
Nele Manon Vollmar, Karl-Heinz Baumann, Mariem Saavedra-Pellitero, and Iván Hernández-Almeida
Biogeosciences, 19, 585–612, https://doi.org/10.5194/bg-19-585-2022, https://doi.org/10.5194/bg-19-585-2022, 2022
Short summary
Short summary
We studied recent (sub-)fossil remains of a type of algae (coccolithophores) off southernmost Chile and across the Drake Passage, adding to the scarce knowledge that exists in the Southern Ocean, a rapidly changing environment. We found that those can be used to reconstruct the surface ocean conditions in the north but not in the south. We also found variations in shape in the dominant species Emiliania huxleyi depending on the location, indicating subtle adaptations to environmental conditions.
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
Short summary
Short summary
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.
Gerhard Fischer, Oscar E. Romero, Johannes Karstensen, Karl-Heinz Baumann, Nasrollah Moradi, Morten Iversen, Götz Ruhland, Marco Klann, and Arne Körtzinger
Biogeosciences, 18, 6479–6500, https://doi.org/10.5194/bg-18-6479-2021, https://doi.org/10.5194/bg-18-6479-2021, 2021
Short summary
Short summary
Low-oxygen eddies in the eastern subtropical North Atlantic can form an oasis for phytoplankton growth. Here we report on particle flux dynamics at the oligotrophic Cape Verde Ocean Observatory. We observed consistent flux patterns during the passages of low-oxygen eddies. We found distinct flux peaks in late winter, clearly exceeding background fluxes. Our findings suggest that the low-oxygen eddies sequester higher organic carbon than expected for oligotrophic settings.
Lukas Jonkers, Oliver Bothe, and Michal Kucera
Clim. Past, 17, 2577–2581, https://doi.org/10.5194/cp-17-2577-2021, https://doi.org/10.5194/cp-17-2577-2021, 2021
Julie Meilland, Michael Siccha, Maike Kaffenberger, Jelle Bijma, and Michal Kucera
Biogeosciences, 18, 5789–5809, https://doi.org/10.5194/bg-18-5789-2021, https://doi.org/10.5194/bg-18-5789-2021, 2021
Short summary
Short summary
Planktonic foraminifera population dynamics has long been assumed to be controlled by synchronous reproduction and ontogenetic vertical migration (OVM). Due to contradictory observations, this concept became controversial. We here test it in the Atlantic ocean for four species of foraminifera representing the main clades. Our observations support the existence of synchronised reproduction and OVM but show that more than half of the population does not follow the canonical trajectory.
Anna Joy Drury, Diederik Liebrand, Thomas Westerhold, Helen M. Beddow, David A. Hodell, Nina Rohlfs, Roy H. Wilkens, Mitchell Lyle, David B. Bell, Dick Kroon, Heiko Pälike, and Lucas J. Lourens
Clim. Past, 17, 2091–2117, https://doi.org/10.5194/cp-17-2091-2021, https://doi.org/10.5194/cp-17-2091-2021, 2021
Short summary
Short summary
We use the first high-resolution southeast Atlantic carbonate record to see how climate dynamics evolved since 30 million years ago (Ma). During ~ 30–13 Ma, eccentricity (orbital circularity) paced carbonate deposition. After the mid-Miocene Climate Transition (~ 14 Ma), precession (Earth's tilt direction) increasingly drove carbonate variability. In the latest Miocene (~ 8 Ma), obliquity (Earth's tilt) pacing appeared, signalling increasing high-latitude influence.
Charlotte L. Spencer-Jones, Erin L. McClymont, Nicole J. Bale, Ellen C. Hopmans, Stefan Schouten, Juliane Müller, E. Povl Abrahamsen, Claire Allen, Torsten Bickert, Claus-Dieter Hillenbrand, Elaine Mawbey, Victoria Peck, Aleksandra Svalova, and James A. Smith
Biogeosciences, 18, 3485–3504, https://doi.org/10.5194/bg-18-3485-2021, https://doi.org/10.5194/bg-18-3485-2021, 2021
Short summary
Short summary
Long-term ocean temperature records are needed to fully understand the impact of West Antarctic Ice Sheet collapse. Glycerol dialkyl glycerol tetraethers (GDGTs) are powerful tools for reconstructing ocean temperature but can be difficult to apply to the Southern Ocean. Our results show active GDGT synthesis in relatively warm depths of the ocean. This research improves the application of GDGT palaeoceanographic proxies in the Southern Ocean.
Markus Raitzsch, Jelle Bijma, Torsten Bickert, Michael Schulz, Ann Holbourn, and Michal Kučera
Clim. Past, 17, 703–719, https://doi.org/10.5194/cp-17-703-2021, https://doi.org/10.5194/cp-17-703-2021, 2021
Short summary
Short summary
At approximately 14 Ma, the East Antarctic Ice Sheet expanded to almost its current extent, but the role of CO2 in this major climate transition is not entirely known. We show that atmospheric CO2 might have varied on 400 kyr cycles linked to the eccentricity of the Earth’s orbit. The resulting change in weathering and ocean carbon cycle affected atmospheric CO2 in a way that CO2 rose after Antarctica glaciated, helping to stabilize the climate system on its way to the “ice-house” world.
Catarina Cavaleiro, Antje H. L. Voelker, Heather Stoll, Karl-Heinz Baumann, and Michal Kucera
Clim. Past, 16, 2017–2037, https://doi.org/10.5194/cp-16-2017-2020, https://doi.org/10.5194/cp-16-2017-2020, 2020
Douglas Lessa, Raphaël Morard, Lukas Jonkers, Igor M. Venancio, Runa Reuter, Adrian Baumeister, Ana Luiza Albuquerque, and Michal Kucera
Biogeosciences, 17, 4313–4342, https://doi.org/10.5194/bg-17-4313-2020, https://doi.org/10.5194/bg-17-4313-2020, 2020
Short summary
Short summary
We observed that living planktonic foraminifera had distinct vertically distributed communities across the Subtropical South Atlantic. In addition, a hierarchic alternation of environmental parameters was measured to control the distribution of planktonic foraminifer's species depending on the water depth. This implies that not only temperature but also productivity and subsurface processes are signed in fossil assemblages, which could be used to perform paleoceanographic reconstructions.
Lukas Jonkers, Olivier Cartapanis, Michael Langner, Nick McKay, Stefan Mulitza, Anne Strack, and Michal Kucera
Earth Syst. Sci. Data, 12, 1053–1081, https://doi.org/10.5194/essd-12-1053-2020, https://doi.org/10.5194/essd-12-1053-2020, 2020
Oscar E. Romero, Karl-Heinz Baumann, Karin A. F. Zonneveld, Barbara Donner, Jens Hefter, Bambaye Hamady, Vera Pospelova, and Gerhard Fischer
Biogeosciences, 17, 187–214, https://doi.org/10.5194/bg-17-187-2020, https://doi.org/10.5194/bg-17-187-2020, 2020
Short summary
Short summary
Monitoring of the multiannual evolution of populations representing different trophic levels allows for obtaining insights into the impact of climate variability in marine coastal upwelling ecosystems. By using a multiyear, continuous (1,900 d) sediment trap record, we assess the dynamics and fluxes of calcareous, organic and siliceous microorganisms off Mauritania (NW Africa). The experiment allowed for the recognition of a general sequence of seasonal variations of the main populations.
Anna Jentzen, Joachim Schönfeld, Agnes K. M. Weiner, Manuel F. G. Weinkauf, Dirk Nürnberg, and Michal Kučera
J. Micropalaeontol., 38, 231–247, https://doi.org/10.5194/jm-38-231-2019, https://doi.org/10.5194/jm-38-231-2019, 2019
Short summary
Short summary
The study assessed the population dynamics of living planktic foraminifers on a weekly, seasonal, and interannual timescale off the coast of Puerto Rico to improve our understanding of short- and long-term variations. The results indicate a seasonal change of the faunal composition, and over the last decades. Lower standing stocks and lower stable carbon isotope values of foraminifers in shallow waters can be linked to the hurricane Sandy, which passed the Greater Antilles during autumn 2012.
Mariem Saavedra-Pellitero, Karl-Heinz Baumann, Miguel Ángel Fuertes, Hartmut Schulz, Yann Marcon, Nele Manon Vollmar, José-Abel Flores, and Frank Lamy
Biogeosciences, 16, 3679–3702, https://doi.org/10.5194/bg-16-3679-2019, https://doi.org/10.5194/bg-16-3679-2019, 2019
Short summary
Short summary
Open ocean phytoplankton include coccolithophore algae, a key element in carbon cycle regulation with important feedbacks to the climate system. We document latitudinal variability in both coccolithophore assemblage and the mass variation in one particular species, Emiliania huxleyi, for a transect across the Drake Passage (in the Southern Ocean). Coccolithophore abundance, diversity and maximum depth habitat decrease southwards, coinciding with changes in the predominant E. huxleyi morphotypes.
Mitchell Lyle, Anna Joy Drury, Jun Tian, Roy Wilkens, and Thomas Westerhold
Clim. Past, 15, 1715–1739, https://doi.org/10.5194/cp-15-1715-2019, https://doi.org/10.5194/cp-15-1715-2019, 2019
Short summary
Short summary
Ocean sediment records document changes in Earth’s carbon cycle and ocean productivity. We present 8 Myr CaCO3 and bulk sediment records from seven eastern Pacific scientific drill sites to identify intervals of excess CaCO3 dissolution (high carbon storage in the oceans) and excess burial of plankton hard parts indicating high productivity. We define the regional extent of production intervals and explore the impact of the closure of the Atlantic–Pacific Panama connection on CaCO3 burial.
Mattia Greco, Lukas Jonkers, Kerstin Kretschmer, Jelle Bijma, and Michal Kucera
Biogeosciences, 16, 3425–3437, https://doi.org/10.5194/bg-16-3425-2019, https://doi.org/10.5194/bg-16-3425-2019, 2019
Short summary
Short summary
To be able to interpret the paleoecological signal contained in N. pachyderma's shells, its habitat depth must be known. Our investigation on 104 density profiles of this species from the Arctic and North Atlantic shows that specimens reside closer to the surface when sea-ice and/or surface chlorophyll concentrations are high. This is in contrast with previous investigations that pointed at the position of the deep chlorophyll maximum as the main driver of N. pachyderma vertical distribution.
Haruka Takagi, Katsunori Kimoto, Tetsuichi Fujiki, Hiroaki Saito, Christiane Schmidt, Michal Kucera, and Kazuyoshi Moriya
Biogeosciences, 16, 3377–3396, https://doi.org/10.5194/bg-16-3377-2019, https://doi.org/10.5194/bg-16-3377-2019, 2019
Short summary
Short summary
Photosymbiosis (endosymbiosis with algae) is an evolutionary important ecology for many marine organisms but has poorly been identified among planktonic foraminifera. In this study, we identified and characterized photosymbiosis of various species of planktonic foraminifera by focusing on their photosynthesis–related features. We finally proposed a new framework showing a potential strength of photosymbiosis, which will serve as a basis for future ecological studies of planktonic foraminifera.
Christopher J. Hollis, Tom Dunkley Jones, Eleni Anagnostou, Peter K. Bijl, Marlow Julius Cramwinckel, Ying Cui, Gerald R. Dickens, Kirsty M. Edgar, Yvette Eley, David Evans, Gavin L. Foster, Joost Frieling, Gordon N. Inglis, Elizabeth M. Kennedy, Reinhard Kozdon, Vittoria Lauretano, Caroline H. Lear, Kate Littler, Lucas Lourens, A. Nele Meckler, B. David A. Naafs, Heiko Pälike, Richard D. Pancost, Paul N. Pearson, Ursula Röhl, Dana L. Royer, Ulrich Salzmann, Brian A. Schubert, Hannu Seebeck, Appy Sluijs, Robert P. Speijer, Peter Stassen, Jessica Tierney, Aradhna Tripati, Bridget Wade, Thomas Westerhold, Caitlyn Witkowski, James C. Zachos, Yi Ge Zhang, Matthew Huber, and Daniel J. Lunt
Geosci. Model Dev., 12, 3149–3206, https://doi.org/10.5194/gmd-12-3149-2019, https://doi.org/10.5194/gmd-12-3149-2019, 2019
Short summary
Short summary
The Deep-Time Model Intercomparison Project (DeepMIP) is a model–data intercomparison of the early Eocene (around 55 million years ago), the last time that Earth's atmospheric CO2 concentrations exceeded 1000 ppm. Previously, we outlined the experimental design for climate model simulations. Here, we outline the methods used for compilation and analysis of climate proxy data. The resulting climate
atlaswill provide insights into the mechanisms that control past warm climate states.
Andreia Rebotim, Antje Helga Luise Voelker, Lukas Jonkers, Joanna J. Waniek, Michael Schulz, and Michal Kucera
J. Micropalaeontol., 38, 113–131, https://doi.org/10.5194/jm-38-113-2019, https://doi.org/10.5194/jm-38-113-2019, 2019
Short summary
Short summary
To reconstruct subsurface water conditions using deep-dwelling planktonic foraminifera, we must fully understand how the oxygen isotope signal incorporates into their shell. We report δ18O in four species sampled in the eastern North Atlantic with plankton tows. We assess the size and crust effect on the isotopic δ18O and compared them with predictions from two equations. We reveal different patterns of calcite addition with depth, highlighting the need to perform species-specific calibrations.
Lukas Jonkers and Michal Kučera
Clim. Past, 15, 881–891, https://doi.org/10.5194/cp-15-881-2019, https://doi.org/10.5194/cp-15-881-2019, 2019
Short summary
Short summary
Fossil plankton assemblages have been widely used to reconstruct SST. In such approaches, full taxonomic resolution is often used. We assess whether this is required for reliable reconstructions as some species may not respond to SST. We find that only a few species are needed for low reconstruction errors but that species selection has a pronounced effect on reconstructions. We suggest that the sensitivity of a reconstruction to species pruning can be used as a measure of its robustness.
Marcus P. S. Badger, Thomas B. Chalk, Gavin L. Foster, Paul R. Bown, Samantha J. Gibbs, Philip F. Sexton, Daniela N. Schmidt, Heiko Pälike, Andreas Mackensen, and Richard D. Pancost
Clim. Past, 15, 539–554, https://doi.org/10.5194/cp-15-539-2019, https://doi.org/10.5194/cp-15-539-2019, 2019
Short summary
Short summary
Understanding how atmospheric CO2 has affected the climate of the past is an important way of furthering our understanding of how CO2 may affect our climate in the future. There are several ways of determining CO2 in the past; in this paper, we ground-truth one method (based on preserved organic matter from alga) against the record of CO2 preserved as bubbles in ice cores over a glacial–interglacial cycle. We find that there is a discrepancy between the two.
Nadia Al-Sabouni, Isabel S. Fenton, Richard J. Telford, and Michal Kučera
J. Micropalaeontol., 37, 519–534, https://doi.org/10.5194/jm-37-519-2018, https://doi.org/10.5194/jm-37-519-2018, 2018
Short summary
Short summary
In this study we investigate consistency in species-level identifications and whether disagreements are predictable. Overall, 21 researchers from across the globe identified sets of 300 specimens or digital images of planktonic foraminifera. Digital identifications tended to be more disparate. Participants trained by the same person often had more similar identifications. Disagreements hardly affected transfer-function temperature estimates but produced larger differences in diversity metrics.
Kerstin Kretschmer, Lukas Jonkers, Michal Kucera, and Michael Schulz
Biogeosciences, 15, 4405–4429, https://doi.org/10.5194/bg-15-4405-2018, https://doi.org/10.5194/bg-15-4405-2018, 2018
Short summary
Short summary
The fossil shells of planktonic foraminifera are widely used to reconstruct past climate conditions. To do so, information about their seasonal and vertical habitat is needed. Here we present an updated version of a planktonic foraminifera model to better understand species-specific habitat dynamics under climate change. This model produces spatially and temporally coherent distribution patterns, which agree well with available observations, and can thus aid the interpretation of proxy records.
Tom Dunkley Jones, Hayley R. Manners, Murray Hoggett, Sandra Kirtland Turner, Thomas Westerhold, Melanie J. Leng, Richard D. Pancost, Andy Ridgwell, Laia Alegret, Rob Duller, and Stephen T. Grimes
Clim. Past, 14, 1035–1049, https://doi.org/10.5194/cp-14-1035-2018, https://doi.org/10.5194/cp-14-1035-2018, 2018
Short summary
Short summary
The Paleocene–Eocene Thermal Maximum (PETM) is a transient global warming event associated with a doubling of atmospheric carbon dioxide concentrations. Here we document a major increase in sediment accumulation rates on a subtropical continental margin during the PETM, likely due to marked changes in hydro-climates and sediment transport. These high sedimentation rates persist through the event and may play a key role in the removal of carbon from the atmosphere by the burial of organic carbon.
Thomas Westerhold, Ursula Röhl, Roy H. Wilkens, Philip D. Gingerich, William C. Clyde, Scott L. Wing, Gabriel J. Bowen, and Mary J. Kraus
Clim. Past, 14, 303–319, https://doi.org/10.5194/cp-14-303-2018, https://doi.org/10.5194/cp-14-303-2018, 2018
Short summary
Short summary
Here we present a high-resolution timescale synchronization of continental and marine deposits for one of the most pronounced global warming events, the Paleocene–Eocene Thermal Maximum, which occurred 56 million years ago. New high-resolution age models for the Bighorn Basin Coring Project (BBCP) drill cores help to improve age models for climate records from deep-sea drill cores and for the first time point to a concurrent major change in marine and terrestrial biota 54.25 million years ago.
Anna Joy Drury, Thomas Westerhold, David Hodell, and Ursula Röhl
Clim. Past, 14, 321–338, https://doi.org/10.5194/cp-14-321-2018, https://doi.org/10.5194/cp-14-321-2018, 2018
Short summary
Short summary
North Atlantic Site 982 is key to our understanding of climate evolution over the past 12 million years. However, the stratigraphy and age model are unverified. We verify the composite splice using XRF core scanning data and establish a revised benthic foraminiferal stable isotope astrochronology from 8.0–4.5 million years ago. Our new stratigraphy accurately correlates the Atlantic and the Mediterranean and suggests a connection between late Miocene cooling and dynamic ice sheet expansion.
Joost Frieling, Gert-Jan Reichart, Jack J. Middelburg, Ursula Röhl, Thomas Westerhold, Steven M. Bohaty, and Appy Sluijs
Clim. Past, 14, 39–55, https://doi.org/10.5194/cp-14-39-2018, https://doi.org/10.5194/cp-14-39-2018, 2018
Short summary
Short summary
Past periods of rapid global warming such as the Paleocene–Eocene Thermal Maximum are used to study biotic response to climate change. We show that very high peak PETM temperatures in the tropical Atlantic (~ 37 ºC) caused heat stress in several marine plankton groups. However, only slightly cooler temperatures afterwards allowed highly diverse plankton communities to bloom. This shows that tropical plankton communities may be susceptible to extreme warming, but may also recover rapidly.
Catarina V. Guerreiro, Karl-Heinz Baumann, Geert-Jan A. Brummer, Gerhard Fischer, Laura F. Korte, Ute Merkel, Carolina Sá, Henko de Stigter, and Jan-Berend W. Stuut
Biogeosciences, 14, 4577–4599, https://doi.org/10.5194/bg-14-4577-2017, https://doi.org/10.5194/bg-14-4577-2017, 2017
Short summary
Short summary
Our study provides insights into the factors governing the spatio-temporal variability of coccolithophores in the equatorial North Atlantic and illustrates how this supposedly oligotrophic and stable open-ocean region actually reveals significant ecological variability. We provide evidence for Saharan dust and the Amazon River acting as fertilizers for phytoplankton and highlight the the importance of the thermocline depth for coccolithophore productivity in the lower photic zone.
Thomas Westerhold, Ursula Röhl, Thomas Frederichs, Claudia Agnini, Isabella Raffi, James C. Zachos, and Roy H. Wilkens
Clim. Past, 13, 1129–1152, https://doi.org/10.5194/cp-13-1129-2017, https://doi.org/10.5194/cp-13-1129-2017, 2017
Short summary
Short summary
We assembled a very accurate geological timescale from the interval 47.8 to 56.0 million years ago, also known as the Ypresian stage. We used cyclic variations in the data caused by periodic changes in Earthäs orbit around the sun as a metronome for timescale construction. Our new data compilation provides the first geological evidence for chaos in the long-term behavior of planetary orbits in the solar system, as postulated almost 30 years ago, and a possible link to plate tectonics events.
Roy H. Wilkens, Thomas Westerhold, Anna J. Drury, Mitchell Lyle, Thomas Gorgas, and Jun Tian
Clim. Past, 13, 779–793, https://doi.org/10.5194/cp-13-779-2017, https://doi.org/10.5194/cp-13-779-2017, 2017
Short summary
Short summary
Here we introduce the Code for Ocean Drilling Data (CODD), a unified and consistent system for integrating disparate data streams such as micropaleontology, physical properties, core images, geochemistry, and borehole logging. As a test case, data from Ocean Drilling Program Leg 154 (Ceara Rise – western equatorial Atlantic) were assembled into a new regional composite benthic stable isotope record covering the last 5 million years.
Raphaël Morard, Franck Lejzerowicz, Kate F. Darling, Béatrice Lecroq-Bennet, Mikkel Winther Pedersen, Ludovic Orlando, Jan Pawlowski, Stefan Mulitza, Colomban de Vargas, and Michal Kucera
Biogeosciences, 14, 2741–2754, https://doi.org/10.5194/bg-14-2741-2017, https://doi.org/10.5194/bg-14-2741-2017, 2017
Short summary
Short summary
The exploitation of deep-sea sedimentary archive relies on the recovery of mineralized skeletons of pelagic organisms. Planktonic groups leaving preserved remains represent only a fraction of the total marine diversity. Environmental DNA left by non-fossil organisms is a promising source of information for paleo-reconstructions. Here we show how planktonic-derived environmental DNA preserves ecological structure of planktonic communities. We use planktonic foraminifera as a case study.
Lukas Jonkers and Michal Kučera
Clim. Past, 13, 573–586, https://doi.org/10.5194/cp-13-573-2017, https://doi.org/10.5194/cp-13-573-2017, 2017
Short summary
Short summary
Planktonic foraminifera – the most important proxy carriers in palaeoceanography – adjust their seasonal and vertical habitat. They are thought to do so in a way that minimises the change in their environment, implying that proxy records based on these organisms may not capture the full amplitude of past climate change. Here we demonstrate that they indeed track a particular thermal habitat and suggest that this could lead to a 40 % underestimation of reconstructed temperature change.
Philipp M. Munz, Stephan Steinke, Anna Böll, Andreas Lückge, Jeroen Groeneveld, Michal Kucera, and Hartmut Schulz
Clim. Past, 13, 491–509, https://doi.org/10.5194/cp-13-491-2017, https://doi.org/10.5194/cp-13-491-2017, 2017
Short summary
Short summary
We present the results of several independent proxies of summer SST and upwelling SST from the Oman margin indicative of monsoon strength during the early Holocene. In combination with indices of carbonate preservation and bottom water redox conditions, we demonstrate that a persistent solar influence was modulating summer monsoon intensity. Furthermore, bottom water conditions are linked to atmospheric forcing, rather than changes of intermediate water masses.
Andreia Rebotim, Antje H. L. Voelker, Lukas Jonkers, Joanna J. Waniek, Helge Meggers, Ralf Schiebel, Igaratza Fraile, Michael Schulz, and Michal Kucera
Biogeosciences, 14, 827–859, https://doi.org/10.5194/bg-14-827-2017, https://doi.org/10.5194/bg-14-827-2017, 2017
Short summary
Short summary
Planktonic foraminifera species depth habitat remains poorly constrained and the existing conceptual models are not sufficiently tested by observational data. Here we present a synthesis of living planktonic foraminifera abundance data in the subtropical eastern North Atlantic from vertical plankton tows. We also test potential environmental factors influencing the species depth habitat and investigate yearly or lunar migration cycles. These findings may impact paleoceanographic studies.
Mathieu Martinez, Sergey Kotov, David De Vleeschouwer, Damien Pas, and Heiko Pälike
Clim. Past, 12, 1765–1783, https://doi.org/10.5194/cp-12-1765-2016, https://doi.org/10.5194/cp-12-1765-2016, 2016
Short summary
Short summary
Identification of Milankovitch cycles within the sedimentary record depends on spectral analyses, but these can be biased because there are always slight uncertainties in the sample position within a sedimentary column. Here, we simulate uncertainties in the sample position and show that a tight control on the inter-sample distance together with a density of 6–12 samples per precession cycle are needed to accurately reconstruct the contribution of the orbital forcing on past climate changes.
Gerhard Fischer, Johannes Karstensen, Oscar Romero, Karl-Heinz Baumann, Barbara Donner, Jens Hefter, Gesine Mollenhauer, Morten Iversen, Björn Fiedler, Ivanice Monteiro, and Arne Körtzinger
Biogeosciences, 13, 3203–3223, https://doi.org/10.5194/bg-13-3203-2016, https://doi.org/10.5194/bg-13-3203-2016, 2016
Short summary
Short summary
Particle fluxes at the Cape Verde Ocean Observatory in the eastern tropical North Atlantic for the period December 2009 until May 2011 are discussed based on deep sediment trap time-series data collected at 1290 and 3439 m water depths. The typically open-ocean flux pattern with weak seasonality is modified by the appearance of a highly productive and low oxygen eddy in winter 2010. The eddy passage was accompanied by high biogenic and lithogenic fluxes, lasting from December 2009 to May 2010.
Oliver Friedrich, Sietske J. Batenburg, Kazuyoshi Moriya, Silke Voigt, Cécile Cournède, Iris Möbius, Peter Blum, André Bornemann, Jens Fiebig, Takashi Hasegawa, Pincelli M. Hull, Richard D. Norris, Ursula Röhl, Thomas Westerhold, Paul A. Wilson, and IODP Expedition
Clim. Past Discuss., https://doi.org/10.5194/cp-2016-51, https://doi.org/10.5194/cp-2016-51, 2016
Manuscript not accepted for further review
Short summary
Short summary
A lack of knowledge on the timing of Late Cretaceous climatic change inhibits our understanding of underlying causal mechanisms. Therefore, we used an expanded deep ocean record from the North Atlantic that shows distinct sedimentary cyclicity suggesting orbital forcing. A high-resolution carbon-isotope record from bulk carbonates allows to identify global trends in the carbon cycle. Our new carbon isotope record and the established cyclostratigraphy may serve as a future reference site.
Claudia Agnini, David J. A. Spofforth, Gerald R. Dickens, Domenico Rio, Heiko Pälike, Jan Backman, Giovanni Muttoni, and Edoardo Dallanave
Clim. Past, 12, 883–909, https://doi.org/10.5194/cp-12-883-2016, https://doi.org/10.5194/cp-12-883-2016, 2016
Short summary
Short summary
In this paper we present records of stable C and O isotopes, CaCO3 content, and changes in calcareous nannofossil assemblages in a upper Paleocene-lower Eocene rocks now exposed in northeast Italy. Modifications of nannoplankton assemblages and carbon isotopes are strictly linked one to each other and always display the same ranking and spacing. The integration of this two data sets represents a significative improvement in our capacity to correlate different sections at a very high resolution.
T. Westerhold, U. Röhl, T. Frederichs, S. M. Bohaty, and J. C. Zachos
Clim. Past, 11, 1181–1195, https://doi.org/10.5194/cp-11-1181-2015, https://doi.org/10.5194/cp-11-1181-2015, 2015
Short summary
Short summary
Testing hypotheses for mechanisms and dynamics of past climate change relies on the accuracy of geological dating. Development of a highly accurate geological timescale for the Cenozoic Era has previously been hampered by discrepancies between radioisotopic and astronomical dating methods, as well as a stratigraphic gap in the middle Eocene. We close this gap and provide a fundamental advance in establishing a reliable and highly accurate geological timescale for the last 66 million years.
L. Jonkers and M. Kučera
Biogeosciences, 12, 2207–2226, https://doi.org/10.5194/bg-12-2207-2015, https://doi.org/10.5194/bg-12-2207-2015, 2015
I. Hessler, S. P. Harrison, M. Kucera, C. Waelbroeck, M.-T. Chen, C. Anderson, A. de Vernal, B. Fréchette, A. Cloke-Hayes, G. Leduc, and L. Londeix
Clim. Past, 10, 2237–2252, https://doi.org/10.5194/cp-10-2237-2014, https://doi.org/10.5194/cp-10-2237-2014, 2014
T. Westerhold, U. Röhl, H. Pälike, R. Wilkens, P. A. Wilson, and G. Acton
Clim. Past, 10, 955–973, https://doi.org/10.5194/cp-10-955-2014, https://doi.org/10.5194/cp-10-955-2014, 2014
M. T. Horigome, P. Ziveri, M. Grelaud, K.-H. Baumann, G. Marino, and P. G. Mortyn
Biogeosciences, 11, 2295–2308, https://doi.org/10.5194/bg-11-2295-2014, https://doi.org/10.5194/bg-11-2295-2014, 2014
A. J. Enge, U. Witte, M. Kucera, and P. Heinz
Biogeosciences, 11, 2017–2026, https://doi.org/10.5194/bg-11-2017-2014, https://doi.org/10.5194/bg-11-2017-2014, 2014
C. Berger, K. J. S. Meier, H. Kinkel, and K.-H. Baumann
Biogeosciences, 11, 929–944, https://doi.org/10.5194/bg-11-929-2014, https://doi.org/10.5194/bg-11-929-2014, 2014
W. C. Clyde, P. D. Gingerich, S. L. Wing, U. Röhl, T. Westerhold, G. Bowen, K. Johnson, A. A. Baczynski, A. Diefendorf, F. McInerney, D. Schnurrenberger, A. Noren, K. Brady, and the BBCP Science Team
Sci. Dril., 16, 21–31, https://doi.org/10.5194/sd-16-21-2013, https://doi.org/10.5194/sd-16-21-2013, 2013
M. F. G. Weinkauf, T. Moller, M. C. Koch, and M. Kučera
Biogeosciences, 10, 6639–6655, https://doi.org/10.5194/bg-10-6639-2013, https://doi.org/10.5194/bg-10-6639-2013, 2013
Y. Milker, R. Rachmayani, M. F. G. Weinkauf, M. Prange, M. Raitzsch, M. Schulz, and M. Kučera
Clim. Past, 9, 2231–2252, https://doi.org/10.5194/cp-9-2231-2013, https://doi.org/10.5194/cp-9-2231-2013, 2013
Karl-Heinz Baumann and Babette Boeckel
J. Micropalaeontol., 32, 123–133, https://doi.org/10.1144/jmpaleo2011-007, https://doi.org/10.1144/jmpaleo2011-007, 2013
R. J. Telford, C. Li, and M. Kucera
Clim. Past, 9, 859–870, https://doi.org/10.5194/cp-9-859-2013, https://doi.org/10.5194/cp-9-859-2013, 2013
D. Liebrand, L. J. Lourens, D. A. Hodell, B. de Boer, R. S. W. van de Wal, and H. Pälike
Clim. Past, 7, 869–880, https://doi.org/10.5194/cp-7-869-2011, https://doi.org/10.5194/cp-7-869-2011, 2011
Related subject area
Paleobiogeoscience: Marine Record
Coupled otolith and foraminifera oxygen and carbon stable isotopes evidence paleoceanographic changes and fish metabolic responses
Ideas and perspectives: Human impacts alter the marine fossil record
Were early Archean carbonate factories major carbon sinks on the juvenile Earth?
Origin and role of non-skeletal carbonate in coralligenous build-ups: new geobiological perspectives in biomineralization processes
Serpulid microbialitic bioherms from the upper Sarmatian (Middle Miocene) of the central Paratethys Sea (NW Hungary) – witnesses of a microbial sea
Massive corals record deforestation in Malaysian Borneo through sediments in river discharge
Calcification response of planktic foraminifera to environmental change in the western Mediterranean Sea during the industrial era
Variation in calcification of Reticulofenestra coccoliths over the Oligocene–Early Miocene
The influence of near-surface sediment hydrothermalism on the TEX86 tetraether-lipid-based proxy and a new correction for ocean bottom lipid overprinting
Testing the effect of bioturbation and species abundance upon discrete-depth individual foraminifera analysis
Test-size evolution of the planktonic foraminifer Globorotalia menardii in the eastern tropical Atlantic since the Late Miocene
Distribution of coccoliths in surface sediments across the Drake Passage and calcification of Emiliania huxleyi morphotypes
Vertical distribution of planktic foraminifera through an oxygen minimum zone: how assemblages and test morphology reflect oxygen concentrations
Reconstructing past variations in environmental conditions and paleoproductivity over the last ∼ 8000 years off north-central Chile (30° S)
A 15-million-year-long record of phenotypic evolution in the heavily calcified coccolithophore Helicosphaera and its biogeochemical implications
Shell chemistry of the boreal Campanian bivalve Rastellum diluvianum (Linnaeus, 1767) reveals temperature seasonality, growth rates and life cycle of an extinct Cretaceous oyster
Southern California margin benthic foraminiferal assemblages record recent centennial-scale changes in oxygen minimum zone
Baseline for ostracod-based northwestern Pacific and Indo-Pacific shallow-marine paleoenvironmental reconstructions: ecological modeling of species distributions
Neogene Caribbean elasmobranchs: diversity, paleoecology and paleoenvironmental significance of the Cocinetas Basin assemblage (Guajira Peninsula, Colombia)
Coastal primary productivity changes over the last millennium: a case study from the Skagerrak (North Sea)
A 1500-year multiproxy record of coastal hypoxia from the northern Baltic Sea indicates unprecedented deoxygenation over the 20th century
Technical note: An empirical method for absolute calibration of coccolith thickness
Reconstructing Holocene temperature and salinity variations in the western Baltic Sea region: a multi-proxy comparison from the Little Belt (IODP Expedition 347, Site M0059)
The oxic degradation of sedimentary organic matter 1400 Ma constrains atmospheric oxygen levels
Geochemical and microstructural characterisation of two species of cool-water bivalves (Fulvia tenuicostata and Soletellina biradiata) from Western Australia
Ecological response to collapse of the biological pump following the mass extinction at the Cretaceous–Paleogene boundary
Quantifying the Cenozoic marine diatom deposition history: links to the C and Si cycles
Anthropogenically induced environmental changes in the northeastern Adriatic Sea in the last 500 years (Panzano Bay, Gulf of Trieste)
Palaeohydrological changes over the last 50 ky in the central Gulf of Cadiz: complex forcing mechanisms mixing multi-scale processes
Dinocyst assemblage constraints on oceanographic and atmospheric processes in the eastern equatorial Atlantic over the last 44 kyr
Sedimentary response to sea ice and atmospheric variability over the instrumental period off Adélie Land, East Antarctica
Equatorward phytoplankton migration during a cold spell within the Late Cretaceous super-greenhouse
Upwellings mitigated Plio-Pleistocene heat stress for reef corals on the Florida platform (USA)
Millennial changes in North Atlantic oxygen concentrations
Vanishing coccolith vital effects with alleviated carbon limitation
Late Pleistocene glacial–interglacial shell-size–isotope variability in planktonic foraminifera as a function of local hydrography
Coral records of reef-water pH across the central Great Barrier Reef, Australia: assessing the influence of river runoff on inshore reefs
Records of past mid-depth ventilation: Cretaceous ocean anoxic event 2 vs. Recent oxygen minimum zones
Organomineral nanocomposite carbon burial during Oceanic Anoxic Event 2
Non-invasive imaging methods applied to neo- and paleo-ontological cephalopod research
Icehouse–greenhouse variations in marine denitrification
Changes in calcification of coccoliths under stable atmospheric CO2
Southern Hemisphere imprint for Indo-Asian summer monsoons during the last glacial period as revealed by Arabian Sea productivity records
The calcareous nannofossil Prinsiosphaera achieved rock-forming abundances in the latest Triassic of western Tethys: consequences for the δ13C of bulk carbonate
The Little Ice Age: evidence from a sediment record in Gullmar Fjord, Swedish west coast
Nitrogen isotopes in bulk marine sediment: linking seafloor observations with subseafloor records
Quantitative reconstruction of sea-surface conditions over the last 150 yr in the Beaufort Sea based on dinoflagellate cyst assemblages: the role of large-scale atmospheric circulation patterns
Spatial linkages between coral proxies of terrestrial runoff across a large embayment in Madagascar
Pteropods from the Caribbean Sea: variations in calcification as an indicator of past ocean carbonate saturation
Sedimentary organic matter and carbonate variations in the Chukchi Borderland in association with ice sheet and ocean-atmosphere dynamics over the last 155 kyr
Konstantina Agiadi, Iuliana Vasiliev, Geanina Butiseacă, George Kontakiotis, Danae Thivaiou, Evangelia Besiou, Stergios Zarkogiannis, Efterpi Koskeridou, Assimina Antonarakou, and Andreas Mulch
Biogeosciences, 21, 3869–3881, https://doi.org/10.5194/bg-21-3869-2024, https://doi.org/10.5194/bg-21-3869-2024, 2024
Short summary
Short summary
Seven million years ago, the marine gateway connecting the Mediterranean Sea with the Atlantic Ocean started to close, and, as a result, water circulation ceased. To find out how this phenomenon affected the fish living in the Mediterranean Sea, we examined the changes in the isotopic composition of otoliths of two common fish species. Although the species living at the surface fared pretty well, the bottom-water fish starved and eventually became extinct in the Mediterranean.
Rafał Nawrot, Martin Zuschin, Adam Tomašových, Michał Kowalewski, and Daniele Scarponi
Biogeosciences, 21, 2177–2188, https://doi.org/10.5194/bg-21-2177-2024, https://doi.org/10.5194/bg-21-2177-2024, 2024
Short summary
Short summary
The youngest fossil record is a crucial source of data on the history of marine ecosystems and their long-term alteration by humans. However, human activities that reshape ecosystems also alter sedimentary and biological processes that control the formation of the geological archives recording those impacts. Thus, humans have been transforming the marine fossil record in ways that affect our ability to reconstruct past ecological and climate dynamics.
Wanli Xiang, Jan-Peter Duda, Andreas Pack, Mark van Zuilen, and Joachim Reitner
EGUsphere, https://doi.org/10.5194/egusphere-2024-1007, https://doi.org/10.5194/egusphere-2024-1007, 2024
Short summary
Short summary
We investigated the formation of early Archean (~3.5–3.4 Ga) carbonates in the Pilbara Craton, Western Australia, demonstrating the presence of an oceanic crust-, an organo-carbonate-, and a microbial carbonate factory. Notably, (a)biotic organic matter as well as hydrothermal fluids were centrally involved in carbonate precipitation. Since carbonates are widespread in the Archean, they may have constituted major carbon sinks that modulated early Earth’s carbon cycle and, hence, climate system.
Mara Cipriani, Carmine Apollaro, Daniela Basso, Pietro Bazzicalupo, Marco Bertolino, Valentina Alice Bracchi, Fabio Bruno, Gabriele Costa, Rocco Dominici, Alessandro Gallo, Maurizio Muzzupappa, Antonietta Rosso, Rossana Sanfilippo, Francesco Sciuto, Giovanni Vespasiano, and Adriano Guido
Biogeosciences, 21, 49–72, https://doi.org/10.5194/bg-21-49-2024, https://doi.org/10.5194/bg-21-49-2024, 2024
Short summary
Short summary
Who constructs the build-ups of the Mediterranean Sea? What is the role of skeletal and soft-bodied organisms in these bioconstructions? Do bacteria play a role in their formation? In this research, for the first time, the coralligenous of the Mediterranean shelf is studied from a geobiological point of view with an interdisciplinary biological and geological approach, highlighting important biotic relationships that can be used in interpreting the fossil build-up systems.
Mathias Harzhauser, Oleg Mandic, and Werner E. Piller
Biogeosciences, 20, 4775–4794, https://doi.org/10.5194/bg-20-4775-2023, https://doi.org/10.5194/bg-20-4775-2023, 2023
Short summary
Short summary
Bowl-shaped spirorbid microbialite bioherms formed during the late Middle Miocene (Sarmatian) in the central Paratethys Sea under a warm, arid climate. The microbialites and the surrounding sediment document a predominance of microbial activity in the shallow marine environments of the sea at that time. Modern microbialites are not analogues for these unique structures, which reflect a series of growth stages with an initial “start-up stage”, massive “keep-up stage” and termination of growth.
Walid Naciri, Arnoud Boom, Matthew Payne, Nicola Browne, Noreen J. Evans, Philip Holdship, Kai Rankenburg, Ramasamy Nagarajan, Bradley J. McDonald, Jennifer McIlwain, and Jens Zinke
Biogeosciences, 20, 1587–1604, https://doi.org/10.5194/bg-20-1587-2023, https://doi.org/10.5194/bg-20-1587-2023, 2023
Short summary
Short summary
In this study, we tested the ability of massive boulder-like corals to act as archives of land use in Malaysian Borneo to palliate the lack of accurate instrumental data on deforestation before the 1980s. We used mass spectrometry to measure trace element ratios in coral cores to use as a proxy for sediment in river discharge. Results showed an extremely similar increase between our proxy and the river discharge instrumental record, demonstrating the use of these corals as reliable archives.
Thibauld M. Béjard, Andrés S. Rigual-Hernández, José A. Flores, Javier P. Tarruella, Xavier Durrieu de Madron, Isabel Cacho, Neghar Haghipour, Aidan Hunter, and Francisco J. Sierro
Biogeosciences, 20, 1505–1528, https://doi.org/10.5194/bg-20-1505-2023, https://doi.org/10.5194/bg-20-1505-2023, 2023
Short summary
Short summary
The Mediterranean Sea is undergoing a rapid and unprecedented environmental change. Planktic foraminifera calcification is affected on different timescales. On seasonal and interannual scales, calcification trends differ according to the species and are linked mainly to sea surface temperatures and carbonate system parameters, while comparison with pre/post-industrial assemblages shows that all three species have reduced their calcification between 10 % to 35 % according to the species.
José Guitián, Miguel Ángel Fuertes, José-Abel Flores, Iván Hernández-Almeida, and Heather Stoll
Biogeosciences, 19, 5007–5019, https://doi.org/10.5194/bg-19-5007-2022, https://doi.org/10.5194/bg-19-5007-2022, 2022
Short summary
Short summary
The effect of environmental conditions on the degree of calcification of marine phytoplankton remains unclear. This study implements a new microscopic approach to quantify the calcification of ancient coccolithophores, using North Atlantic sediments. Results show significant differences in the thickness and shape factor of coccoliths for samples with minimum dissolution, providing the first evaluation of phytoplankton physiology adaptation to million-year-scale variable environmental conditions.
Jeremy N. Bentley, Gregory T. Ventura, Clifford C. Walters, Stefan M. Sievert, and Jeffrey S. Seewald
Biogeosciences, 19, 4459–4477, https://doi.org/10.5194/bg-19-4459-2022, https://doi.org/10.5194/bg-19-4459-2022, 2022
Short summary
Short summary
We demonstrate the TEX86 (TetraEther indeX of 86 carbon atoms) paleoclimate proxy can become heavily impacted by the ocean floor archaeal community. The impact results from source inputs, their diagenetic and catagenetic alteration, and further overprint by the additions of lipids from the ocean floor sedimentary archaeal community. We then present a method to correct the overprints by using IPLs (intact polar lipids) extracted from both water column and subsurface archaeal communities.
Bryan C. Lougheed and Brett Metcalfe
Biogeosciences, 19, 1195–1209, https://doi.org/10.5194/bg-19-1195-2022, https://doi.org/10.5194/bg-19-1195-2022, 2022
Short summary
Short summary
Measurements on sea-dwelling shelled organisms called foraminifera retrieved from deep-sea sediment cores have been used to reconstruct sea surface temperature (SST) variation. To evaluate the method, we use a computer model to simulate millions of single foraminifera and how they become mixed in the sediment after being deposited on the seafloor. We compare the SST inferred from the single foraminifera in the sediment core to the true SST in the water, thus quantifying method uncertainties.
Thore Friesenhagen
Biogeosciences, 19, 777–805, https://doi.org/10.5194/bg-19-777-2022, https://doi.org/10.5194/bg-19-777-2022, 2022
Short summary
Short summary
Size measurements of the planktonic foraminifer Globorotalia menardii and related forms are used to investigate the shell-size evolution for the last 8 million years in the eastern tropical Atlantic Ocean. Long-term changes in the shell size coincide with major climatic, palaeogeographic and palaeoceanographic changes and suggest the occurrence of a new G. menardii type in the Atlantic Ocean ca. 2 million years ago.
Nele Manon Vollmar, Karl-Heinz Baumann, Mariem Saavedra-Pellitero, and Iván Hernández-Almeida
Biogeosciences, 19, 585–612, https://doi.org/10.5194/bg-19-585-2022, https://doi.org/10.5194/bg-19-585-2022, 2022
Short summary
Short summary
We studied recent (sub-)fossil remains of a type of algae (coccolithophores) off southernmost Chile and across the Drake Passage, adding to the scarce knowledge that exists in the Southern Ocean, a rapidly changing environment. We found that those can be used to reconstruct the surface ocean conditions in the north but not in the south. We also found variations in shape in the dominant species Emiliania huxleyi depending on the location, indicating subtle adaptations to environmental conditions.
Catherine V. Davis, Karen Wishner, Willem Renema, and Pincelli M. Hull
Biogeosciences, 18, 977–992, https://doi.org/10.5194/bg-18-977-2021, https://doi.org/10.5194/bg-18-977-2021, 2021
Práxedes Muñoz, Lorena Rebolledo, Laurent Dezileau, Antonio Maldonado, Christoph Mayr, Paola Cárdenas, Carina B. Lange, Katherine Lalangui, Gloria Sanchez, Marco Salamanca, Karen Araya, Ignacio Jara, Gabriel Easton, and Marcel Ramos
Biogeosciences, 17, 5763–5785, https://doi.org/10.5194/bg-17-5763-2020, https://doi.org/10.5194/bg-17-5763-2020, 2020
Short summary
Short summary
We analyze marine sedimentary records to study temporal changes in oxygen and productivity in marine waters of central Chile. We observed increasing oxygenation and decreasing productivity from 6000 kyr ago to the modern era that seem to respond to El Niño–Southern Oscillation activity. In the past centuries, deoxygenation and higher productivity are re-established, mainly in the northern zones of Chile and Peru. Meanwhile, in north-central Chile the deoxygenation trend is maintained.
Luka Šupraha and Jorijntje Henderiks
Biogeosciences, 17, 2955–2969, https://doi.org/10.5194/bg-17-2955-2020, https://doi.org/10.5194/bg-17-2955-2020, 2020
Short summary
Short summary
The cell size, degree of calcification and growth rates of coccolithophores impact their role in the carbon cycle and may also influence their adaptation to environmental change. Combining insights from culture experiments and the fossil record, we show that the selection for smaller cells over the past 15 Myr has been a common adaptive trait among different lineages. However, heavily calcified species maintained a more stable biogeochemical output than the ancestral lineage of E. huxleyi.
Niels J. de Winter, Clemens V. Ullmann, Anne M. Sørensen, Nicolas Thibault, Steven Goderis, Stijn J. M. Van Malderen, Christophe Snoeck, Stijn Goolaerts, Frank Vanhaecke, and Philippe Claeys
Biogeosciences, 17, 2897–2922, https://doi.org/10.5194/bg-17-2897-2020, https://doi.org/10.5194/bg-17-2897-2020, 2020
Short summary
Short summary
In this study, we present a detailed investigation of the chemical composition of 12 specimens of very well preserved, 78-million-year-old oyster shells from southern Sweden. The chemical data show how the oysters grew, the environment in which they lived and how old they became and also provide valuable information about which chemical measurements we can use to learn more about ancient climate and environment from such shells. In turn, this can help improve climate reconstructions and models.
Hannah M. Palmer, Tessa M. Hill, Peter D. Roopnarine, Sarah E. Myhre, Katherine R. Reyes, and Jonas T. Donnenfield
Biogeosciences, 17, 2923–2937, https://doi.org/10.5194/bg-17-2923-2020, https://doi.org/10.5194/bg-17-2923-2020, 2020
Short summary
Short summary
Modern climate change is causing expansions of low-oxygen zones, with detrimental impacts to marine life. To better predict future ocean oxygen change, we study past expansions and contractions of low-oxygen zones using microfossils of seafloor organisms. We find that, along the San Diego margin, the low-oxygen zone expanded into more shallow water in the last 400 years, but the conditions within and below the low-oxygen zone did not change significantly in the last 1500 years.
Yuanyuan Hong, Moriaki Yasuhara, Hokuto Iwatani, and Briony Mamo
Biogeosciences, 16, 585–604, https://doi.org/10.5194/bg-16-585-2019, https://doi.org/10.5194/bg-16-585-2019, 2019
Short summary
Short summary
This study analyzed microfaunal assemblages in surface sediments from 52 sites in Hong Kong marine waters. We selected 18 species for linear regression modeling to statistically reveal the relationship between species distribution and environmental factors. These results show environmental preferences of commonly distributed species on Asian coasts, providing a robust baseline for past environmental reconstruction of the broad Asian region using microfossils in sediment cores.
Jorge Domingo Carrillo-Briceño, Zoneibe Luz, Austin Hendy, László Kocsis, Orangel Aguilera, and Torsten Vennemann
Biogeosciences, 16, 33–56, https://doi.org/10.5194/bg-16-33-2019, https://doi.org/10.5194/bg-16-33-2019, 2019
Short summary
Short summary
By combining taxonomy and geochemistry, we corroborated the described paleoenvironments from a Neogene fossiliferous deposit of South America. Shark teeth specimens were used for taxonomic identification and as proxies for geochemical analyses. With a multidisciplinary approach we refined the understanding about the paleoenvironmental setting and the paleoecological characteristics of the studied groups, in our case, for the bull shark and its incursions into brackish waters.
Anna Binczewska, Bjørg Risebrobakken, Irina Polovodova Asteman, Matthias Moros, Amandine Tisserand, Eystein Jansen, and Andrzej Witkowski
Biogeosciences, 15, 5909–5928, https://doi.org/10.5194/bg-15-5909-2018, https://doi.org/10.5194/bg-15-5909-2018, 2018
Short summary
Short summary
Primary productivity is an important factor in the functioning and structuring of the coastal ecosystem. Thus, two sediment cores from the Skagerrak (North Sea) were investigated in order to obtain a comprehensive picture of primary productivity changes during the last millennium and identify associated forcing factors (e.g. anthropogenic, climate). The cores were dated and analysed for palaeoproductivity proxies and palaeothermometers.
Sami A. Jokinen, Joonas J. Virtasalo, Tom Jilbert, Jérôme Kaiser, Olaf Dellwig, Helge W. Arz, Jari Hänninen, Laura Arppe, Miia Collander, and Timo Saarinen
Biogeosciences, 15, 3975–4001, https://doi.org/10.5194/bg-15-3975-2018, https://doi.org/10.5194/bg-15-3975-2018, 2018
Short summary
Short summary
Oxygen deficiency is a major environmental problem deteriorating seafloor habitats especially in the coastal ocean with large human impact. Here we apply a wide set of chemical and physical analyses to a 1500-year long sediment record and show that, although long-term climate variability has modulated seafloor oxygenation in the coastal northern Baltic Sea, the oxygen loss over the 20th century is unprecedentedly severe, emphasizing the need to reduce anthropogenic nutrient input in the future.
Saúl González-Lemos, José Guitián, Miguel-Ángel Fuertes, José-Abel Flores, and Heather M. Stoll
Biogeosciences, 15, 1079–1091, https://doi.org/10.5194/bg-15-1079-2018, https://doi.org/10.5194/bg-15-1079-2018, 2018
Short summary
Short summary
Changes in atmospheric carbon dioxide affect ocean chemistry and the ability of marine organisms to manufacture shells from calcium carbonate. We describe a technique to obtain more reproducible measurements of the thickness of calcium carbonate shells made by microscopic marine algae called coccolithophores, which will allow researchers to compare how the shell thickness responds to variations in ocean chemistry in the past and present.
Ulrich Kotthoff, Jeroen Groeneveld, Jeanine L. Ash, Anne-Sophie Fanget, Nadine Quintana Krupinski, Odile Peyron, Anna Stepanova, Jonathan Warnock, Niels A. G. M. Van Helmond, Benjamin H. Passey, Ole Rønø Clausen, Ole Bennike, Elinor Andrén, Wojciech Granoszewski, Thomas Andrén, Helena L. Filipsson, Marit-Solveig Seidenkrantz, Caroline P. Slomp, and Thorsten Bauersachs
Biogeosciences, 14, 5607–5632, https://doi.org/10.5194/bg-14-5607-2017, https://doi.org/10.5194/bg-14-5607-2017, 2017
Short summary
Short summary
We present reconstructions of paleotemperature, paleosalinity, and paleoecology from the Little Belt (Site M0059) over the past ~ 8000 years and evaluate the applicability of numerous proxies. Conditions were lacustrine until ~ 7400 cal yr BP. A transition to brackish–marine conditions then occurred within ~ 200 years. Salinity proxies rarely allowed quantitative estimates but revealed congruent results, while quantitative temperature reconstructions differed depending on the proxies used.
Shuichang Zhang, Xiaomei Wang, Huajian Wang, Emma U. Hammarlund, Jin Su, Yu Wang, and Donald E. Canfield
Biogeosciences, 14, 2133–2149, https://doi.org/10.5194/bg-14-2133-2017, https://doi.org/10.5194/bg-14-2133-2017, 2017
Liza M. Roger, Annette D. George, Jeremy Shaw, Robert D. Hart, Malcolm Roberts, Thomas Becker, Bradley J. McDonald, and Noreen J. Evans
Biogeosciences, 14, 1721–1737, https://doi.org/10.5194/bg-14-1721-2017, https://doi.org/10.5194/bg-14-1721-2017, 2017
Short summary
Short summary
The shell compositions of bivalve species from south Western Australia are described here to better understand the factors involved in their formation. The shell composition can be used to reconstruct past environmental conditions, but certain species manifest an offset compared to the environmental parameters measured. As shown here, shells that experience the same conditions can present different compositions in relation to structure, organic composition and environmental conditions.
Johan Vellekoop, Lineke Woelders, Sanem Açikalin, Jan Smit, Bas van de Schootbrugge, Ismail Ö. Yilmaz, Henk Brinkhuis, and Robert P. Speijer
Biogeosciences, 14, 885–900, https://doi.org/10.5194/bg-14-885-2017, https://doi.org/10.5194/bg-14-885-2017, 2017
Short summary
Short summary
The Cretaceous–Paleogene boundary, ~ 66 Ma, is characterized by a mass extinction. We studied groups of both surface-dwelling and bottom-dwelling organisms to unravel the oceanographic consequences of these extinctions. Our integrated records indicate that a reduction of the transport of organic matter to the sea floor resulted in enhanced recycling of nutrients in the upper water column and decreased food supply at the sea floor in the first tens of thousands of years after the extinctions.
Johan Renaudie
Biogeosciences, 13, 6003–6014, https://doi.org/10.5194/bg-13-6003-2016, https://doi.org/10.5194/bg-13-6003-2016, 2016
Short summary
Short summary
Marine planktonic diatoms are today both the main silica and carbon exporter to the deep sea. However, 50 million years ago, radiolarians were the main silica exporter and diatoms were a rare, geographically restricted group. Quantification of their rise to dominance suggest that diatom abundance is primarily controlled by the continental weathering and has a negative feedback, observable on a geological timescale, on the carbon cycle.
Jelena Vidović, Rafał Nawrot, Ivo Gallmetzer, Alexandra Haselmair, Adam Tomašových, Michael Stachowitsch, Vlasta Ćosović, and Martin Zuschin
Biogeosciences, 13, 5965–5981, https://doi.org/10.5194/bg-13-5965-2016, https://doi.org/10.5194/bg-13-5965-2016, 2016
Short summary
Short summary
We studied the ecological history of the Gulf of Trieste. Before the 20th century, the only activity here was ore mining, releasing high amounts of mercury into its northern part, Panzano Bay. Mercury did not cause changes to microorganisms, as it is not bioavailable. In the 20th century, agriculture caused nutrient enrichment in the bay and increased diversity of microorganisms. Industrial activities increased the concentrations of pollutants, causing only minor changes to microorganisms.
Aurélie Penaud, Frédérique Eynaud, Antje Helga Luise Voelker, and Jean-Louis Turon
Biogeosciences, 13, 5357–5377, https://doi.org/10.5194/bg-13-5357-2016, https://doi.org/10.5194/bg-13-5357-2016, 2016
Short summary
Short summary
This paper presents new analyses conducted at high resolution in the Gulf of Cadiz over the last 50 ky. Palaeohydrological changes in these subtropical latitudes are discussed through dinoflagellate cyst assemblages but also dinocyst transfer function results, implying sea surface temperature and salinity as well as annual productivity reconstructions. This study is thus important for our understanding of past and future productivity regimes, also implying consequences on the biological pump.
William Hardy, Aurélie Penaud, Fabienne Marret, Germain Bayon, Tania Marsset, and Laurence Droz
Biogeosciences, 13, 4823–4841, https://doi.org/10.5194/bg-13-4823-2016, https://doi.org/10.5194/bg-13-4823-2016, 2016
Short summary
Short summary
Our approach is based on a multi-proxy study from a core collected off the Congo River and discusses surface oceanic conditions (upwelling cells, river-induced upwelling), land–sea interactions and terrestrial erosion and in particular enables us to spatially constrain the migration of atmospheric systems. This paper thus presents new data highlighting, with the highest resolution ever reached in this region, the great correlation between phytoplanktonic organisms and monsoonal mechanisms.
Philippine Campagne, Xavier Crosta, Sabine Schmidt, Marie Noëlle Houssais, Olivier Ther, and Guillaume Massé
Biogeosciences, 13, 4205–4218, https://doi.org/10.5194/bg-13-4205-2016, https://doi.org/10.5194/bg-13-4205-2016, 2016
Short summary
Short summary
Diatoms and biomarkers have been recently used for palaeoclimate reconstructions in the Southern Ocean. Few sediment-based ecological studies have investigated their relationships with environmental conditions. Here, we compare high-resolution sedimentary records with meteorological data to study relationships between our proxies and recent atmospheric and sea surface changes. Our results indicate that coupled wind pattern and sea surface variability act as the proximal forcing at that scale.
Niels A. G. M. van Helmond, Appy Sluijs, Nina M. Papadomanolaki, A. Guy Plint, Darren R. Gröcke, Martin A. Pearce, James S. Eldrett, João Trabucho-Alexandre, Ireneusz Walaszczyk, Bas van de Schootbrugge, and Henk Brinkhuis
Biogeosciences, 13, 2859–2872, https://doi.org/10.5194/bg-13-2859-2016, https://doi.org/10.5194/bg-13-2859-2016, 2016
Short summary
Short summary
Over the past decades large changes have been observed in the biogeographical dispersion of marine life resulting from climate change. To better understand present and future trends it is important to document and fully understand the biogeographical response of marine life during episodes of environmental change in the geological past.
Here we investigate the response of phytoplankton, the base of the marine food web, to a rapid cold spell, interrupting greenhouse conditions during the Cretaceous.
Thomas C. Brachert, Markus Reuter, Stefan Krüger, Julia Kirkerowicz, and James S. Klaus
Biogeosciences, 13, 1469–1489, https://doi.org/10.5194/bg-13-1469-2016, https://doi.org/10.5194/bg-13-1469-2016, 2016
Short summary
Short summary
We present stable isotope proxy data and calcification records from fossil reef corals. The corals investigated derive from the Florida carbonate platform and are of middle Pliocene to early Pleistocene age. From the data we infer an environment subject to intermittent upwelling on annual to decadal timescales. Calcification rates were enhanced during periods of upwelling. This is likely an effect of dampened SSTs during the upwelling.
B. A. A. Hoogakker, D. J. R. Thornalley, and S. Barker
Biogeosciences, 13, 211–221, https://doi.org/10.5194/bg-13-211-2016, https://doi.org/10.5194/bg-13-211-2016, 2016
Short summary
Short summary
Models predict a decrease in future ocean O2, driven by surface water warming and freshening in the polar regions, causing a reduction in ocean circulation. Here we assess this effect in the past, focussing on the response of deep and intermediate waters from the North Atlantic during large-scale ice rafting and millennial-scale cooling events of the last glacial.
Our assessment agrees with the models but also highlights the importance of biological processes driving ocean O2 change.
M. Hermoso, I. Z. X. Chan, H. L. O. McClelland, A. M. C. Heureux, and R. E. M. Rickaby
Biogeosciences, 13, 301–312, https://doi.org/10.5194/bg-13-301-2016, https://doi.org/10.5194/bg-13-301-2016, 2016
B. Metcalfe, W. Feldmeijer, M. de Vringer-Picon, G.-J. A. Brummer, F. J. C. Peeters, and G. M. Ganssen
Biogeosciences, 12, 4781–4807, https://doi.org/10.5194/bg-12-4781-2015, https://doi.org/10.5194/bg-12-4781-2015, 2015
Short summary
Short summary
Iron biogeochemical budgets during the natural ocean fertilisation experiment KEOPS-2 showed that complex circulation and transport pathways were responsible for differences in the mode and strength of iron supply, with vertical supply dominant on the plateau and lateral supply dominant in the plume. The exchange of iron between dissolved, biogenic and lithogenic pools was highly dynamic, resulting in a decoupling of iron supply and carbon export and controlling the efficiency of fertilisation.
J. P. D'Olivo, M. T. McCulloch, S. M. Eggins, and J. Trotter
Biogeosciences, 12, 1223–1236, https://doi.org/10.5194/bg-12-1223-2015, https://doi.org/10.5194/bg-12-1223-2015, 2015
Short summary
Short summary
The boron isotope composition in the skeleton of massive Porites corals from the central Great Barrier Reef is used to reconstruct the seawater pH over the 1940-2009 period. The long-term decline in the coral-reconstructed seawater pH is in close agreement with estimates based on the CO2 uptake by surface waters due to rising atmospheric levels. We also observed a significant relationship between terrestrial runoff data and the inshore coral boron isotopes records.
J. Schönfeld, W. Kuhnt, Z. Erdem, S. Flögel, N. Glock, M. Aquit, M. Frank, and A. Holbourn
Biogeosciences, 12, 1169–1189, https://doi.org/10.5194/bg-12-1169-2015, https://doi.org/10.5194/bg-12-1169-2015, 2015
Short summary
Short summary
Today’s oceans show distinct mid-depth oxygen minima while whole oceanic basins became transiently anoxic in the Mesozoic. To constrain past bottom-water oxygenation, we compared sediments from the Peruvian OMZ with the Cenomanian OAE 2 from Morocco. Corg accumulation rates in laminated OAE 2 sections match Holocene rates off Peru. Laminated deposits are found at oxygen levels of < 7µmol kg-1; crab burrows appear at 10µmol kg-1 today, both defining threshold values for palaeoreconstructions.
S. C. Löhr and M. J. Kennedy
Biogeosciences, 11, 4971–4983, https://doi.org/10.5194/bg-11-4971-2014, https://doi.org/10.5194/bg-11-4971-2014, 2014
R. Hoffmann, J. A. Schultz, R. Schellhorn, E. Rybacki, H. Keupp, S. R. Gerden, R. Lemanis, and S. Zachow
Biogeosciences, 11, 2721–2739, https://doi.org/10.5194/bg-11-2721-2014, https://doi.org/10.5194/bg-11-2721-2014, 2014
T. J. Algeo, P. A. Meyers, R. S. Robinson, H. Rowe, and G. Q. Jiang
Biogeosciences, 11, 1273–1295, https://doi.org/10.5194/bg-11-1273-2014, https://doi.org/10.5194/bg-11-1273-2014, 2014
C. Berger, K. J. S. Meier, H. Kinkel, and K.-H. Baumann
Biogeosciences, 11, 929–944, https://doi.org/10.5194/bg-11-929-2014, https://doi.org/10.5194/bg-11-929-2014, 2014
T. Caley, S. Zaragosi, J. Bourget, P. Martinez, B. Malaizé, F. Eynaud, L. Rossignol, T. Garlan, and N. Ellouz-Zimmermann
Biogeosciences, 10, 7347–7359, https://doi.org/10.5194/bg-10-7347-2013, https://doi.org/10.5194/bg-10-7347-2013, 2013
N. Preto, C. Agnini, M. Rigo, M. Sprovieri, and H. Westphal
Biogeosciences, 10, 6053–6068, https://doi.org/10.5194/bg-10-6053-2013, https://doi.org/10.5194/bg-10-6053-2013, 2013
I. Polovodova Asteman, K. Nordberg, and H. L. Filipsson
Biogeosciences, 10, 1275–1290, https://doi.org/10.5194/bg-10-1275-2013, https://doi.org/10.5194/bg-10-1275-2013, 2013
J.-E. Tesdal, E. D. Galbraith, and M. Kienast
Biogeosciences, 10, 101–118, https://doi.org/10.5194/bg-10-101-2013, https://doi.org/10.5194/bg-10-101-2013, 2013
L. Durantou, A. Rochon, D. Ledu, G. Massé, S. Schmidt, and M. Babin
Biogeosciences, 9, 5391–5406, https://doi.org/10.5194/bg-9-5391-2012, https://doi.org/10.5194/bg-9-5391-2012, 2012
C. A. Grove, J. Zinke, T. Scheufen, J. Maina, E. Epping, W. Boer, B. Randriamanantsoa, and G.-J. A. Brummer
Biogeosciences, 9, 3063–3081, https://doi.org/10.5194/bg-9-3063-2012, https://doi.org/10.5194/bg-9-3063-2012, 2012
D. Wall-Palmer, M. B. Hart, C. W. Smart, R. S. J. Sparks, A. Le Friant, G. Boudon, C. Deplus, and J. C. Komorowski
Biogeosciences, 9, 309–315, https://doi.org/10.5194/bg-9-309-2012, https://doi.org/10.5194/bg-9-309-2012, 2012
S. F. Rella and M. Uchida
Biogeosciences, 8, 3545–3553, https://doi.org/10.5194/bg-8-3545-2011, https://doi.org/10.5194/bg-8-3545-2011, 2011
Cited articles
Beerling, D. J. and Royer, D. L.: Reconstructions of atmospheric carbon
dioxide concentrations over the past 65 million years are heading towards
consensus. It is time for systematic testing of the proxies, against
measurements and against each other, Nat. Geosci., 4, 418–420,
https://doi.org/10.1038/ngeo1186, 2011.
Bell, D. B., Jung, S. J. A., and Kroon, D.: The Plio-Pleistocene development
of Atlantic deep-water circulation and its influence on climate trends,
Quaternary Sci. Rev., 123, 265–282,
https://doi.org/10.1016/j.quascirev.2015.06.026, 2015.
Berger, W. H., Bonneau, M. C., and Parker, F. L.: Foraminifera on the
deep-sea floor – lysocline and dissolution rate, Oceanol. Ac., 5, 249–258, 1982.
Bickert, T., Cordes, R., and Wefer, G.: Late Pliocene to mid-Pleistocene
(2.6–1.0 My) carbonate dissolution in the western equatorial Atlantic:
results of leg 154, Ceara Rise, in: Proceedings of the Ocean Drilling
Program, Sci. Res., 154, 229–237, 1997.
Bickert, T., Haug, G. H., and Tiedemann, R.: Late Neogene benthic stable
isotope record of Ocean Drilling Program Site 999: Implications for
Caribbean paleoceanography, organic carbon burial, and the Messinian
Salinity Crisis, Paleoceanography, 19, PA1023,
https://doi.org/10.1029/2002PA000799, 2004.
Boudreau, B. P., Middelburg, J. J., and Luo, Y.: The role of calcification
in carbonate compensation, Nat. Geosci., 11, 894–900,
https://doi.org/10.1038/s41561-018-0259-5, 2018.
Brummer, G. J. A. and van Eijden, A. J. M.: “Blue-ocean” paleoproductivity
estimates from pelagic carbonate mass accumulation rates, Mar.
Micropaleontol., 19, 99–117,
https://doi.org/10.1016/0377-8398(92)90023-D, 1992.
Cavaleiro, C., Voelker, A. H. L., Stoll, H., Baumann, K.-H., Kulhanek, D.
K., Naafs, B. D. A., Stein, R., Grützner, J., Ventura, C., and Kucera,
M.: Insolation forcing of coccolithophore productivity in the North Atlantic
during the Middle Pleistocene, Quaternary Sci. Rev., 191, 318–336,
https://doi.org/10.1016/j.quascirev.2018.05.027, 2018.
Cavaleiro, C., Voelker, A. H. L., Stoll, H., Baumann, K.-H., and Kucera, M.:
Coccolithophore productivity at the western Iberian Margin during the Middle
Pleistocene (310–455 ka) – evidence from coccolith Sr
Chalk, T. B., Foster, G. L., and Wilson, P. A.: Dynamic storage of glacial
CO2 in the Atlantic Ocean revealed by boron [CO
Clark, P. U. and Huybers, P.: Interglacial and future sea level: Global
change, Nature, 462, 856–857, https://doi.org/10.1038/462856a, 2009.
Cornuault, P., Westerhold, T., Pälike, H., Bickert, T., Baumann, K.-H., and Kucera, M.: Carbonate accumulation rate calculation derived from previously published carbonate content data, for the five sites of the Leg 154, Ceara Rise, tropical Atlantic from 0 to 16 Ma, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.945848, 2022a.
Cornuault, P., Westerhold, T., Pälike, H., Bickert, T., Baumann, K. H., and Kucera, M.: Magnetic susceptibility of ODP Site 154-927, Pliocene Warm Period (3095 to 3307 ka) interval, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.945773, 2022b
Cornuault, P., Westerhold, T., Pälike, H., Bickert, T., Baumann, K.-H., and Kucera, M.: Oxygen and carbon stable isotopes ratios from benthic foraminifera from Miocene Climatic Optimum (MCO) (15589 to 15964 ka) time interval, ODP Hole 154-927A, Ceara Rise, tropical Atlantic Ocean, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.945812, 2022c.
Cornuault, P., Westerhold, T., Pälike, H., Bickert, T., Baumann, K.-H., and Kucera, M.:
Carbonate content analyses and accumulation rate data for the marine isotopic stage (MIS) 5, MIS 9, MIS KM5 and MCO, ODP Site 154-927, Ceara Rise, tropical Atlantic Ocean, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.945789, 2022d.
Cornuault, P., Westerhold, T., Pälike, H., Bickert, T., Baumann, K.-H., and Kucera, M.: Splice composition of ODP Site 154-927, 110.43 mcd to 119.79 mcd interval, Ceara Rise, tropical Atlantic, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.945707, 2022e.
Cullen, J. L. and Curry, W. B.: Variations in planktonic foraminifer faunas
and carbonate preservation at site 927: Evidence for changing surface water
conditions in the western tropical Atlantic ocean during the middle
Pleistocene, in: Proceedings of the Ocean Drilling Program, edited by: Shackleton, N. J., Curry, W. B., Richter, C., and Bralower, T. J., Sci. Results, Vol. 154, College Station, TX, Ocean Drilling Program, 207–228, https://doi.org/10.2973/odp.proc.sr.154.111.1997, 1997.
Curry, W. B. and Cullen, J. L.: Carbonate production and dissolution in the
western equatorial Atlantic during the last 1 My, in: Proceedings of the
Ocean Drilling Program, edited by: Shackleton, N. J., Curry, W. B., Richter, C., and Bralower, T. J., Scientific Results, Vol. 154, College Station, TX, Ocean Drilling Program, 189–199, https://doi.org/10.2973/odp.proc.sr.154.112.1997, 1997.
Curry, W. B., Shackleton, N. J., Richter, C., and et al. (Eds.): Proceedings
of the Ocean Drilling Program, 154 Initial Reports, Ocean Drilling Program,
https://doi.org/10.2973/odp.proc.ir.154.1995, 1995.
De Vleeschouwer, D., Vahlenkamp, M., Crucifix, M., and Pälike, H.:
Alternating Southern and Northern Hemisphere climate response to
astronomical forcing during the past 35 My, Geology, 45, 375–378,
https://doi.org/10.1130/G38663.1, 2017.
De Vleeschouwer, D., Drury, A. J., Vahlenkamp, M., Rochholz, F., Liebrand,
D., and Pälike, H.: High-latitude biomes and rock weathering mediate
climate–carbon cycle feedbacks on eccentricity timescales, Nat.
Commun., 11, 5013, https://doi.org/10.1038/s41467-020-18733-w, 2020.
Dodson, J. and Macphail, M. K.: Palynological evidence for aridity events
and vegetation change during the Middle Pliocene, a warm period in
Southwestern Australia, Glob. Planet. Change, 41, 285–307,
https://doi.org/10.1016/j.gloplacha.2004.01.013, 2004.
Drury, A. J., Liebrand, D., Westerhold, T., Beddow, H. M., Hodell, D. A., Rohlfs, N., Wilkens, R. H., Lyle, M., Bell, D. B., Kroon, D., Pälike, H., and Lourens, L. J.: Climate, cryosphere and carbon cycle controls on Southeast Atlantic orbital-scale carbonate deposition since the Oligocene (30–0 Ma), Clim. Past, 17, 2091–2117, https://doi.org/10.5194/cp-17-2091-2021, 2021.
Feely, R. A.: Impact of Anthropogenic CO2 on the CaCO3 System in
the Oceans, Science, 305, 362–366, https://doi.org/10.1126/science.1097329,
2004.
Foster, G. L., Lear, C. H., and Rae, J. W. B.: The evolution of pCO2,
ice volume and climate during the middle Miocene, Earth Pl.
Sc. Lett., 341, 243–254,
https://doi.org/10.1016/j.epsl.2012.06.007, 2012.
Frenz, M., Baumann, K.-H., Boeckel, B., Hoppner, R., and Henrich, R.:
Quantification of Foraminifer and Coccolith Carbonate in South Atlantic
Surface Sediments by Means of Carbonate Grain-Size Distributions, J.
Sediment. Res., 75, 464–475, https://doi.org/10.2110/jsr.2005.036,
2005.
Frenz, M., Henrich, R., and Zychla, B.: Carbonate preservation patterns at
the Ceará Rise – Evidence for the Pliocene super conveyor, Mar.
Geol., 232, 173–180, https://doi.org/10.1016/j.margeo.2006.07.006, 2006.
Gehlen, M., Gangstø, R., Schneider, B., Bopp, L., Aumont, O., and Ethe, C.: The fate of pelagic CaCO3 production in a high CO2 ocean: a model study, Biogeosciences, 4, 505–519, https://doi.org/10.5194/bg-4-505-2007, 2007.
Gouveia, N. A., Gherardi, D. F. M., and Aragão, L. E. O. C.: The Role of
the Amazon River Plume on the Intensification of the Hydrological Cycle,
Geophys. Res. Lett., 9, 12221–12229, https://doi.org/10.1029/2019GL084302, 2019.
Gröger, M., Henrich, R., and Bickert, T.: Glacial–interglacial
variability in lower North Atlantic deep water: inference from silt
grain-size analysis and carbonate preservation in the western equatorial
Atlantic, Mar. Geol., 201, 321–332,
https://doi.org/10.1016/S0025-3227(03)00263-9, 2003a.
Gröger, M., Henrich, R., and Bickert, T.: Variability of silt grain size
and planktonic foraminiferal preservation in Plio/Pleistocene sediments from
the western equatorial Atlantic and Caribbean, Mar. Geol., 201,
307–320, https://doi.org/10.1016/S0025-3227(03)00264-0, 2003b.
Haq, B. U., Hardenbol, J., and Vail, P. R.: Chronology of Fluctuating Sea
Levels Since the Triassic, Science, 235, 1156–1167,
https://doi.org/10.1126/science.235.4793.1156, 1987.
Harris, S. E., Mix, A. C., and King, T.: Biogenic and terrigenous
sedimentation at Ceara Rise, western tropical Atlantic, supports
Pliocene–Pleistocene deep-water linkage between hemispheres, in:
Proceedings of the Ocean Drilling Program, edited by: Shackleton, N. J., Curry, W. B., Richter, C., and Bralower, T. J., Proc. ODP, Sci. Results, Vol. 154, College Station, TX, Ocean Drilling Program, 331–345, https://doi.org/10.2973/odp.proc.sr.154.114.1997, 1997.
Haywood, A. M., Valdes, P. J., and Sellwood, B. W.: Global scale
palaeoclimate reconstruction of the middle Pliocene climate using the UKMO
GCM: initial results, Glob. Planet. Change, 25, 239–256,
https://doi.org/10.1016/S0921-8181(00)00028-X, 2000.
Haywood, A. M., Dolan, A. M., Pickering, S. J., Dowsett, H. J., McClymont,
E. L., Prescott, C. L., Salzmann, U., Hill, D. J., Hunter, S. J., Lunt, D.
J., Pope, J. O., and Valdes, P. J.: On the identification of a Pliocene time
slice for data-model comparison, Philos. T. R.
Soc. A, 371,
20120515, https://doi.org/10.1098/rsta.2012.0515, 2013.
Henson, S. A., Sanders, R., and Madsen, E.: Global patterns in efficiency of
particulate organic carbon export and transfer to the deep ocean, Global
Biogeochem. Cy., 26, GB1028, https://doi.org/10.1029/2011GB004099,
2012.
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.
Herrford, J., Brandt, P., and Zenk, W.: Property changes of deep and bottom
waters in the Western Tropical Atlantic, Deep-Sea Res. Pt. I, 124, 103–125,
https://doi.org/10.1016/j.dsr.2017.04.007, 2017.
Holbourn, A., Kuhnt, W., Schulz, M., Flores, J.-A., and Andersen, N.:
Orbitally-paced climate evolution during the middle Miocene “Monterey”
carbon-isotope excursion, Earth Pl. Sc. Lett., 261,
534–550, https://doi.org/10.1016/j.epsl.2007.07.026, 2007.
Holbourn, A., Kuhnt, W., Kochhann, K. G. D., Andersen, N., and Sebastian
Meier, K. J.: Global perturbation of the carbon cycle at the onset of the
Miocene Climatic Optimum, Geology, 43, 123–126,
https://doi.org/10.1130/G36317.1, 2015.
Holbourn, A. E., Kuhnt, W., Clemens, S. C., Kochhann, K. G. D., Jöhnck,
J., Lübbers, J., and Andersen, N.: Late Miocene climate cooling and
intensification of southeast Asian winter monsoon, Nat. Commun., 9, 1584,
https://doi.org/10.1038/s41467-018-03950-1, 2018.
Howard, W. R.: A warm future in the past, Nature, 388, 418–419,
https://doi.org/10.1038/41201, 1997.
Katz, M. E., Katz, D. R., Wright, J. D., Miller, K. G., Pak, D. K.,
Shackleton, N. J., and Thomas, E.: Early Cenozoic benthic foraminiferal
isotopes: Species reliability and interspecies correction factors,
Paleoceanography, 18, 1024, https://doi.org/10.1029/2002PA000798, 2003.
King, T. A., Ellis, W. G., Murray, D. W., Shackleton, N. J., and Harris, S.:
23. Miocene evolution of carbonate sedimentation at the Ceara Rise: A
multivariate data/proxy approach, edited by: Shackleton, N. J., Curry, W. B., Richter, C., and Bralower, T. J., Proc. ODP, Sci. Results, Vol. 154, College Station, TX, Ocean Drilling Program, 349–365, https://doi.org/10.2973/odp.proc.sr.154.116.1997,
1997.
Kopp, R. E., Simons, F. J., Mitrovica, J. X., Maloof, A. C., and
Oppenheimer, M.: Probabilistic assessment of sea level during the last
interglacial stage, Nature, 462, 863–868, https://doi.org/10.1038/nature08686,
2009.
Kukla, G.: How long and how stable was the last interglacial?, Quaternary
Sci. Rev., 16, 605–612,
https://doi.org/10.1016/S0277-3791(96)00114-X, 1997.
Kurschner, W. M., Kvacek, Z., and Dilcher, D. L.: The impact of Miocene
atmospheric carbon dioxide fluctuations on climate and the evolution of
terrestrial ecosystems, P. Natl. Acad. Sci. USA,
105, 449–453, https://doi.org/10.1073/pnas.0708588105, 2008.
Landschützer, P., Gruber, N., Bakker, D. C. E., and Schuster, U.: Recent
variability of the global ocean carbon sink, Global Biogeochem. Cy.,
28, 927–949, https://doi.org/10.1002/2014GB004853, 2014.
Laskar, J., Robutel, P., Joutel, F., Gastineau, M., Correia, A. C. M., and
Levrard, B.: A long-term numerical solution for the insolation quantities of
the Earth, Astron. Astrophys., 428, 261–285,
https://doi.org/10.1051/0004-6361:20041335, 2004.
Leroy, S. and Dupont, L.: Development of vegetation and continental aridity
in northwestern Africa during the Late Pliocene: the pollen record of ODP
site 658, Palaeogeogr. Palaeocl., 109, 295–316,
https://doi.org/10.1016/0031-0182(94)90181-3, 1994.
Liebrand, D., Beddow, H. M., Lourens, L. J., Pälike, H., Raffi, I.,
Bohaty, S. M., Hilgen, F. J., Saes, M. J. M., Wilson, P. A., van Dijk, A.
E., Hodell, D. A., Kroon, D., Huck, C. E., and Batenburg, S. J.:
Cyclostratigraphy and eccentricity tuning of the early Oligocene through
early Miocene (30.1–17.1 Ma): Cibicides mundulus stable oxygen and carbon isotope records
from Walvis Ridge Site 1264, Earth Pl. Sc. Lett., 450,
392–405, https://doi.org/10.1016/j.epsl.2016.06.007, 2016.
Lisiecki, L. E. and Raymo, M. E.: A Pliocene-Pleistocene stack of 57
globally distributed benthic δ18O records, Paleoceanography,
20, PA1003, https://doi.org/10.1029/2004PA001071, 2005.
Lunt, D. J., Foster, G. L., Haywood, A. M., and Stone, E. J.: Late Pliocene
Greenland glaciation controlled by a decline in atmospheric CO2 levels,
Nature, 454, 1102–1105, https://doi.org/10.1038/nature07223, 2008.
Lunt, D. J., Haywood, A. M., Schmidt, G. A., Salzmann, U., Valdes, P. J.,
and Dowsett, H. J.: Earth system sensitivity inferred from Pliocene
modelling and data, Nat. Geosci., 3, 60–64,
https://doi.org/10.1038/ngeo706, 2010.
Lyle, M.: Neogene carbonate burial in the Pacific Ocean, Paleoceanography,
18, 1059, https://doi.org/10.1029/2002PA000777, 2003.
Lyle, M., Drury, A. J., Tian, J., Wilkens, R., and Westerhold, T.: Late
Miocene to Holocene high-resolution eastern equatorial Pacific carbonate
records: stratigraphy linked by dissolution and paleoproductivity, Clim. Past, 15, 1715–1739, https://doi.org/10.5194/cp-15-1715-2019, 2019.
Marino, M., Maiorano, P., Tarantino, F., Voelker, A., Capotondi, L., Girone,
A., Lirer, F., Flores, J.-A., and Naafs, B. D. A.: Coccolithophores as proxy
of seawater changes at orbital-to-millennial scale during middle Pleistocene
Marine Isotope Stages 14-9 in North Atlantic core MD01-2446,
Paleoceanography, 29, 518–532, https://doi.org/10.1002/2013PA002574, 2014.
Mejía, L. M., Méndez-Vicente, A., Abrevaya, L., Lawrence, K. T.,
Ladlow, C., Bolton, C., Cacho, I., and Stoll, H.: A diatom record of
CO2 decline since the late Miocene, Earth Pl. Sc.
Lett., 479, 18–33, https://doi.org/10.1016/j.epsl.2017.08.034, 2017.
Meyers, S. R.: Astrochron: An R package for astrochronology, https://cran.r-project.org/package=astrochron (last access: 18 January 2023). 2014.
Miller, K. G., Wright, J. D., Browning, J. V., Kulpecz, A., Kominz, M.,
Naish, T. R., Cramer, B. S., Rosenthal, Y., Peltier, W. R., and Sosdian, S.:
High tide of the warm Pliocene: Implications of global sea level for
Antarctic deglaciation, Geology, 40, 407–410,
https://doi.org/10.1130/G32869.1, 2012.
Milliman, J. D.: Production and accumulation of calcium carbonate in the
ocean: budget of a nonsteady state, Global Biogeochem. Cy., 7,
927–957, 1993.
Müller, U. C. and Kukla, G. J.: North Atlantic Current and European
environments during the declining stage of the last interglacial, Geology,
32, 1009, https://doi.org/10.1130/G20901.1, 2004.
Naish, T., Powell, R., Levy, R., Wilson, G., Scherer, R., Talarico, F.,
Krissek, L., Niessen, F., Pompilio, M., Wilson, T., Carter, L., DeConto, R.,
Huybers, P., McKay, R., Pollard, D., Ross, J., Winter, D., Barrett, P.,
Browne, G., Cody, R., Cowan, E., Crampton, J., Dunbar, G., Dunbar, N.,
Florindo, F., Gebhardt, C., Graham, I., Hannah, M., Hansaraj, D., Harwood,
D., Helling, D., Henrys, S., Hinnov, L., Kuhn, G., Kyle, P., Läufer, A.,
Maffioli, P., Magens, D., Mandernack, K., McIntosh, W., Millan, C., Morin,
R., Ohneiser, C., Paulsen, T., Persico, D., Raine, I., Reed, J., Riesselman,
C., Sagnotti, L., Schmitt, D., Sjunneskog, C., Strong, P., Taviani, M.,
Vogel, S., Wilch, T., and Williams, T.: Obliquity-paced Pliocene West
Antarctic ice sheet oscillations, Nature, 458, 322–328,
https://doi.org/10.1038/nature07867, 2009.
Pagani, M., Liu, Z., LaRiviere, J., and Ravelo, A. C.: High Earth-system
climate sensitivity determined from Pliocene carbon dioxide concentrations,
Nat. Geosci., 3, 27–30, https://doi.org/10.1038/ngeo724, 2010.
Paillard, D., Labeyrie, L., and Yiou, P.: Macintosh Program performs
time-series analysis, Eos Trans. AGU, 77, 379–379,
https://doi.org/10.1029/96EO00259, 1996.
Pälike, H., Frazier, J., and Zachos, J. C.: Extended orbitally forced
palaeoclimatic records from the equatorial Atlantic Ceara Rise, Quaternary
Sci. Rev., 25, 3138–3149,
https://doi.org/10.1016/j.quascirev.2006.02.011, 2006a.
Pälike, H., Norris, R. D., Herrle, J. O., Wilson, P. A., Coxall, H. K.,
Lear, C. H., Shackleton, N. J., Tripati, A. K., and Wade, B. S.: The
Heartbeat of the Oligocene Climate System, Science, 314, 1894–1898,
https://doi.org/10.1126/science.1133822, 2006b.
Pälike, H., Lyle, M., Nishi, H., Raffi, I., Gamage, K., Klaus, A., and
Expedition 320/321 Scientists (Eds.): Proceedings of the Integrated Ocean
Drilling Program, 320/321, International Ocean Discovery Program,
https://doi.org/10.2204/iodp.proc.320321.2010, 2010.
Passow, U. and Carlson, C.: The biological pump in a high CO2 world,
Mar. Ecol. Prog. Ser., 470, 249–271,
https://doi.org/10.3354/meps09985, 2012.
Past Interglacials Working Group of PAGES: Interglacials of the last 800,000
years, Rev. Geophys., 54, 162–219,
https://doi.org/10.1002/2015RG000482, 2016.
Paul, H. A., Zachos, J. C., Flower, B. P., and Tripati, A.: Orbitally
induced climate and geochemical variability across the Oligocene/Miocene
boundary, Paleoceanography, 15, 471–485,
https://doi.org/10.1029/1999PA000443, 2000.
Petit, J. R., Jouzel, J., Raynaud, D., Barkov, N. I., Barnola, J.-M.,
Basile, I., Bender, M., Chappellaz, J., Davis, M., Delaygue, G., Delmotte,
M., Kotlyakov, V. M., Legrand, M., Lipenkov, V. Y., Lorius, C., PÉpin,
L., Ritz, C., Saltzman, E., and Stievenard, M.: Climate and atmospheric
history of the past 420,000 years from the Vostok ice core, Antarctica,
Nature, 399, 429–436, https://doi.org/10.1038/20859, 1999.
Pollard, D. and DeConto, R. M.: Modelling West Antarctic ice sheet growth
and collapse through the past five million years, Nature, 458, 329–332,
https://doi.org/10.1038/nature07809, 2009.
Pound, M. J., Haywood, A. M., Salzmann, U., and Riding, J. B.: Global
vegetation dynamics and latitudinal temperature gradients during the Mid to
Late Miocene (15.97–5.33 Ma), Earth-Sci. Rev., 112, 1–22,
https://doi.org/10.1016/j.earscirev.2012.02.005, 2012.
Preiss-Daimler, I. V., Henrich, R., and Bickert, T.: The final Miocene
carbonate crash in the Atlantic: Assessing carbonate accumulation,
preservation and production, Mar. Geol., 343, 39–46,
https://doi.org/10.1016/j.margeo.2013.06.010, 2013.
R Core Team: R: A language and environment for statistical computing. R
Foundation for Statistical Computing, Vienna, Austria, 2021.
Raffi, I., Wade, B. S., Pälike, H., Beu, A. G., Cooper, R., Crundwell,
M. P., Krijgsman, W., Moore, T., Raine, I., Sardella, R., and Vernyhorova,
Y. V.: The Neogene Period, in: Geologic Time Scale 2020, Elsevier,
1141–1215, https://doi.org/10.1016/B978-0-12-824360-2.00029-2, 2020.
Raitzsch, M., Bijma, J., Bickert, T., Schulz, M., Holbourn, A., and Kučera, M.: Atmospheric carbon dioxide variations across the middle Miocene climate transition, Clim. Past, 17, 703–719, https://doi.org/10.5194/cp-17-703-2021, 2021.
Rasband, W. S.: ImageJ, https://imagej.net/ij/index.html (last access: 18 January 2023), 1997.
Rathmann, S. and Kuhnert, H.: Carbonate ion effect on Mg/Ca, Sr/Ca and
stable isotopes on the benthic foraminifera Oridorsalis umbonatus off Namibia, Mar.
Micropaleontol., 66, 120–133,
https://doi.org/10.1016/j.marmicro.2007.08.001, 2008.
Ravelo, A. C. and Wara, M. W.: The Role of the Tropical Oceans on Global
Climate During a Warm Period and a Major Climate Transition, Oceanography,
17, 32–41, https://doi.org/10.5670/oceanog.2004.28, 2004.
Ruddiman, W. F.: A Paleoclimatic Enigma?, Science, 328, 838–839,
https://doi.org/10.1126/science.1188292, 2010.
Rühlemann, C., Diekmann, B., Mulitza, S., and Frank, M.: Late Quaternary
changes of western equatorial Atlantic surface circulation and Amazon
lowland climate recorded in Ceará Rise deep-sea sediments,
Paleoceanography, 16, 293–305, https://doi.org/10.1029/1999PA000474, 2001.
Salzmann, U., Williams, M., Haywood, A. M., Johnson, A. L. A., Kender, S.,
and Zalasiewicz, J.: Climate and environment of a Pliocene warm world,
Palaeogeogr. Palaeocl., 309, 1–8,
https://doi.org/10.1016/j.palaeo.2011.05.044, 2011.
Sarmiento, J. L. and Gruber, N.: Ocean biogeochemical dynamics, Princeton
University Press, Princeton, 503 pp., ISBN: 978-0-691-01707-5, 2006.
Sarmiento, J. L., Gruber, N., Brzezinski, M. A., and Dunne, J. P.:
High-latitude controls of thermocline nutrients and low latitude biological
productivity, Nature, 427, 56–60, https://doi.org/10.1038/nature02127,
2004.
Schlitzer, R.: Ocean Data View, version 5.1.7, https://odv.awi.de (last access: 18 January 2023), 2018.
Seki, O., Foster, G. L., Schmidt, D. N., Mackensen, A., Kawamura, K., and
Pancost, R. D.: Alkenone and boron-based Pliocene pCO2 records, Earth
Pl. Sc. Lett., 292, 201–211,
https://doi.org/10.1016/j.epsl.2010.01.037, 2010.
Shackleton, N. J. and Crowhurst, S.: Sediment fluxes based on an orbitally
tuned time scale 5 Ma to 14 Ma, Site 926, in: Proceedings of the Ocean
Drilling Program, edited by: Shackleton, N. J., Curry, W. B., Richter, C., and Bralower, T. J., Proc. ODP, Sci. Results, Vol. 154, College Station, TX, Ocean Drilling Program, 69–82, https://doi.org/10.2973/odp.proc.sr.154.102.1997, 1997.
Shackleton, N. J., Crowhurst, S. J., Weedon, G. P., and Laskar, J.:
Astronomical calibration of Oligocene–Miocene time, Philos.
T. R. Soc. Lond. Ser. A, 357, 1907–1929,
https://doi.org/10.1098/rsta.1999.0407, 1999.
Sirocko, F., Seelos, K., Schaber, K., Rein, B., Dreher, F., Diehl, M.,
Lehne, R., Jäger, K., Krbetschek, M., and Degering, D.: A late Eemian
aridity pulse in central Europe during the last glacial inception, Nature,
436, 833–836, https://doi.org/10.1038/nature03905, 2005.
Stap, L. B., de Boer, B., Ziegler, M., Bintanja, R., Lourens, L. J., and van
de Wal, R. S. W.: CO2 over the past 5 million years: Continuous
simulation and new δ11B-based proxy data, Earth Pl.
Sci. Lett., 439, 1–10, https://doi.org/10.1016/j.epsl.2016.01.022,
2016.
Stolz, K. and Baumann, K.-H.: Changes in palaeoceanography and palaeoecology
during Marine Isotope Stage (MIS) 5 in the eastern North Atlantic (ODP Site
980) deduced from calcareous nannoplankton observations, Palaeogeogr.
Palaeocl., 292, 295–305,
https://doi.org/10.1016/j.palaeo.2010.04.002, 2010.
Sutherland, R., Dos Santos, Z., Agnini, C., Alegret, L., Lam, A. R.,
Westerhold, T., Drake, M. K., Harper, D. T., Dallanave, E., Newsam, C.,
Cramwinckel, M. J., Dickens, G. R., Collot, J., Etienne, S. J. G.,
Bordenave, A., Stratford, W. R., Zhou, X., Li, H., and Asatryan, G.: Neogene
Mass Accumulation Rate of Carbonate Sediment Across Northern Zealandia,
Tasman Sea, Southwest Pacific, Paleoceanogr. Paleocl., 37, e2021PA004294,
https://doi.org/10.1029/2021PA004294, 2022.
Tiedemann, R. and Franz, S. O.: Deep-water circulation, chemistry, and
terrigenous sediment supply in the equatorial Atlantic during the Pliocene,
3.3–2.6 Ma and 5–4.5 Ma, in: Proceedings of the Ocean Drilling
Program, edited by: Shackleton, N. J., Curry, W. B., Richter, C., and Bralower, T. J., Proc. ODP, Sci. Results, Vol. 154, College Station, TX, Ocean Drilling Program, 299–318, https://doi.org/10.2973/odp.proc.sr.154.120.1997,
1997.
Vervoort, P., Kirtland Turner, S., Rochholz, F., and Ridgwell, A.: Earth
System Model Analysis of How Astronomical Forcing Is Imprinted Onto the
Marine Geological Record: The Role of the Inorganic (Carbonate) Carbon Cycle
and Feedbacks, Paleoceanogr. Paleocl., 36, e2020PA004090,
https://doi.org/10.1029/2020PA004090, 2021.
Voelker, A. H. L., Rodrigues, T., Billups, K., Oppo, D., McManus, J., Stein,
R., Hefter, J., and Grimalt, J. O.: Variations in mid-latitude North
Atlantic surface water properties during the mid-Brunhes (MIS 9–14) and
their implications for the thermohaline circulation, Clim. Past, 6,
531–552, https://doi.org/10.5194/cp-6-531-2010, 2010.
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.
Wilkens, R. H., Westerhold, T., Drury, A. J., Lyle, M., Gorgas, T., and
Tian, J.: Revisiting the Ceara Rise, equatorial Atlantic Ocean: isotope
stratigraphy of ODP Leg 154 from 0 to 5 Ma, Clim. Past, 13,
779–793, https://doi.org/10.5194/cp-13-779-2017, 2017.
Yasuhara, M., Wei, C.-L., Kucera, M., Costello, M. J., Tittensor, D. P.,
Kiessling, W., Bonebrake, T. C., Tabor, C. R., Feng, R., Baselga, A.,
Kretschmer, K., Kusumoto, B., and Kubota, Y.: Past and future decline of
tropical pelagic biodiversity, P. Natl. Acad.
Sci. USA, 117, 12891–12896,
https://doi.org/10.1073/pnas.1916923117, 2020.
You, Y., Huber, M., Muller, R. D., Poulsen, C. J., and Ribbe, J.: Simulation
of the Middle Miocene Climate Optimum, Geophys. Res. Lett., 36,
L04702, https://doi.org/10.1029/2008GL036571, 2009.
Zachos, J.: Trends, Rhythms, and Aberrations in Global Climate 65 Ma to
Present, Science, 292, 686–693, https://doi.org/10.1126/science.1059412,
2001a.
Zachos, J. C.: Climate Response to Orbital Forcing Across the
Oligocene-Miocene Boundary, Science, 292, 274–278,
https://doi.org/10.1126/science.1058288, 2001b.
Zachos, J. C., Dickens, G. R., and Zeebe, R. E.: An early Cenozoic
perspective on greenhouse warming and carbon-cycle dynamics, Nature, 451,
279–283, https://doi.org/10.1038/nature06588, 2008.
Zeeden, C., Hilgen, F., Westerhold, T., Lourens, L., Röhl, U., and
Bickert, T.: Revised Miocene splice, astronomical tuning and calcareous
plankton biochronology of ODP Site 926 between 5 and 14.4 Ma,
Palaeogeogr. Palaeocl., 369, 430–451,
https://doi.org/10.1016/j.palaeo.2012.11.009, 2013.
Zeeden, C., Meyers, S. R., Lourens, L. J., and Hilgen, F. J.: Testing
astronomically tuned age models, Paleoceanography, 30, 369–383,
https://doi.org/10.1002/2014PA002762, 2015.
Short summary
We generated high-resolution records of carbonate accumulation rate from the Miocene to the Quaternary in the tropical Atlantic Ocean to characterize the variability in pelagic carbonate production during warm climates. It follows orbital cycles, responding to local changes in tropical conditions, as well as to long-term shifts in climate and ocean chemistry. These changes were sufficiently large to play a role in the carbon cycle and global climate evolution.
We generated high-resolution records of carbonate accumulation rate from the Miocene to the...
Altmetrics
Final-revised paper
Preprint