Articles | Volume 15, issue 11
https://doi.org/10.5194/bg-15-3357-2018
© Author(s) 2018. 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-15-3357-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Jun 2018
Research article |
| 07 Jun 2018
Reconciling drainage and receiving basin signatures of the Godavari River system
Muhammed Ojoshogu Usman
CORRESPONDING AUTHOR
Geological Institute, ETH Zürich, Sonneggstrasse 5, 8092
Zürich, Switzerland
Frédérique Marie Sophie Anne Kirkels
Department of Earth Sciences, Utrecht University, Heidelberglaan 2,
3584 CS Utrecht, the Netherlands
Huub Michel Zwart
Department of Earth Sciences, Utrecht University, Heidelberglaan 2,
3584 CS Utrecht, the Netherlands
Sayak Basu
Department of Earth Sciences, Indian Institute of Science Education
and Research Kolkata, 741246 Mohanpur, West Bengal, India
Camilo Ponton
Division of Geological and Planetary Science, California Institute of
Technology, 1200 East California Boulevard, Pasadena, California 91125, USA
Thomas Michael Blattmann
Geological Institute, ETH Zürich, Sonneggstrasse 5, 8092
Zürich, Switzerland
Michael Ploetze
Institute for Geotechnical Engineering, ETH Zürich,
Stefano-Franscini-Platz 3, 8093 Zürich, Switzerland
Negar Haghipour
Geological Institute, ETH Zürich, Sonneggstrasse 5, 8092
Zürich, Switzerland
Laboratory of Ion Beam Physics, ETH Zürich, Otto-Stern-Weg 5, 8093
Zürich, Switzerland
Cameron McIntyre
Geological Institute, ETH Zürich, Sonneggstrasse 5, 8092
Zürich, Switzerland
Laboratory of Ion Beam Physics, ETH Zürich, Otto-Stern-Weg 5, 8093
Zürich, Switzerland
Scottish Universities Environmental Research Centre AMS Laboratory,
Rankine Avenue, East Kilbride, G75 0QF Glasgow, Scotland
Francien Peterse
Department of Earth Sciences, Utrecht University, Heidelberglaan 2,
3584 CS Utrecht, the Netherlands
Maarten Lupker
Geological Institute, ETH Zürich, Sonneggstrasse 5, 8092
Zürich, Switzerland
Liviu Giosan
Geology and Geophysics Department, Woods Hole Oceanographic
Institution, 86 Water Street, Woods Hole, Massachusetts 02543, USA
Timothy Ian Eglinton
Geological Institute, ETH Zürich, Sonneggstrasse 5, 8092
Zürich, Switzerland
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Frida S. Hoem, Adrián López-Quirós, Suzanna van de Lagemaat, Johan Etourneau, Marie-Alexandrine Sicre, Carlota Escutia, Henk Brinkhuis, Francien Peterse, Francesca Sangiorgi, and Peter K. Bijl
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Yord W. Yedema, Francesca Sangiorgi, Appy Sluijs, Jaap S. Sinninghe Damsté, and Francien Peterse
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Franziska A. Lechleitner, Christopher C. Day, Oliver Kost, Micah Wilhelm, Negar Haghipour, Gideon M. Henderson, and Heather M. Stoll
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Elena T. Bruni, Richard F. Ott, Vincenzo Picotti, Negar Haghipour, Karl W. Wegmann, and Sean F. Gallen
Earth Surf. Dynam., 9, 771–793, https://doi.org/10.5194/esurf-9-771-2021, https://doi.org/10.5194/esurf-9-771-2021, 2021
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The Klados River catchment contains seemingly overlarge, well-preserved alluvial terraces and fans. Unlike previous studies, we argue that the deposits formed in the Holocene based on their position relative to a paleoshoreline uplifted in 365 CE and seven radiocarbon dates. We also find that constant sediment supply from high-lying landslide deposits disconnected the valley from regional tectonics and climate controls, which resulted in fan and terrace formation guided by stochastic events.
Jannik Martens, Evgeny Romankevich, Igor Semiletov, Birgit Wild, Bart van Dongen, Jorien Vonk, Tommaso Tesi, Natalia Shakhova, Oleg V. Dudarev, Denis Kosmach, Alexander Vetrov, Leopold Lobkovsky, Nikolay Belyaev, Robie W. Macdonald, Anna J. Pieńkowski, Timothy I. Eglinton, Negar Haghipour, Salve Dahle, Michael L. Carroll, Emmelie K. L. Åström, Jacqueline M. Grebmeier, Lee W. Cooper, Göran Possnert, and Örjan Gustafsson
Earth Syst. Sci. Data, 13, 2561–2572, https://doi.org/10.5194/essd-13-2561-2021, https://doi.org/10.5194/essd-13-2561-2021, 2021
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Tessa Sophia van der Voort, Thomas Michael Blattmann, Muhammed Usman, Daniel Montluçon, Thomas Loeffler, Maria Luisa Tavagna, Nicolas Gruber, and Timothy Ian Eglinton
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Hannah Gies, Frank Hagedorn, Maarten Lupker, Daniel Montluçon, Negar Haghipour, Tessa Sophia van der Voort, and Timothy Ian Eglinton
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Michael Sarnthein, Kevin Küssner, Pieter M. Grootes, Blanca Ausin, Timothy Eglinton, Juan Muglia, Raimund Muscheler, and Gordon Schlolaut
Clim. Past, 16, 2547–2571, https://doi.org/10.5194/cp-16-2547-2020, https://doi.org/10.5194/cp-16-2547-2020, 2020
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The dating technique of 14C plateau tuning uses U/Th-based model ages, refinements of the Lake Suigetsu age scale, and the link of surface ocean carbon to the globally mixed atmosphere as basis of age correlation. Our synthesis employs data of 20 sediment cores from the global ocean and offers a coherent picture of global ocean circulation evolving over glacial-to-deglacial times on semi-millennial scales to be compared with climate records stored in marine sediments, ice cores, and speleothems.
Ann G. Dunlea, Liviu Giosan, and Yongsong Huang
Clim. Past, 16, 2533–2546, https://doi.org/10.5194/cp-16-2533-2020, https://doi.org/10.5194/cp-16-2533-2020, 2020
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Appy Sluijs, Joost Frieling, Gordon N. Inglis, Klaas G. J. Nierop, Francien Peterse, Francesca Sangiorgi, and Stefan Schouten
Clim. Past, 16, 2381–2400, https://doi.org/10.5194/cp-16-2381-2020, https://doi.org/10.5194/cp-16-2381-2020, 2020
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We revisit 15-year-old reconstructions of sea surface temperatures in the Arctic Ocean for the late Paleocene and early Eocene epochs (∼ 57–53 million years ago) based on the distribution of fossil membrane lipids of archaea preserved in Arctic Ocean sediments. We find that improvements in the methods over the past 15 years do not lead to different results. However, data quality is now higher and potential biases better characterized. Results confirm remarkable Arctic warmth during this time.
Loes G. J. van Bree, Francien Peterse, Allix J. Baxter, Wannes De Crop, Sigrid van Grinsven, Laura Villanueva, Dirk Verschuren, and Jaap S. Sinninghe Damsté
Biogeosciences, 17, 5443–5463, https://doi.org/10.5194/bg-17-5443-2020, https://doi.org/10.5194/bg-17-5443-2020, 2020
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Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are used as a paleothermometer based on their temperature dependence in global soils, but aquatic production complicates their use in lakes. BrGDGTs in the water column of Lake Chala, East Africa, respond to oxygen conditions and mixing. Changes in their signal can be linked to bacterial community composition rather than membrane adaptation to changing conditions. Their integrated signal in the sediment reflects mean air temperature.
Marius L. Huber, Maarten Lupker, Sean F. Gallen, Marcus Christl, and Ananta P. Gajurel
Earth Surf. Dynam., 8, 769–787, https://doi.org/10.5194/esurf-8-769-2020, https://doi.org/10.5194/esurf-8-769-2020, 2020
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Large boulders found in two Himalayan valleys show signs of long fluvial transport (>10 km). Paleo-discharges required to mobilize these boulders exceed typical monsoon discharges. Exposure dating shows that a cluster of these boulders was emplaced ca. 5 kyr ago. This period is coeval with a weakening of the Indian monsoon and glacier retreat in the area. We, therefore, suggest that glacier lake outburst floods are likely mechanisms that can explain these exceptional transport processes.
Margot J. Cramwinckel, Lineke Woelders, Emiel P. Huurdeman, Francien Peterse, Stephen J. Gallagher, Jörg Pross, Catherine E. Burgess, Gert-Jan Reichart, Appy Sluijs, and Peter K. Bijl
Clim. Past, 16, 1667–1689, https://doi.org/10.5194/cp-16-1667-2020, https://doi.org/10.5194/cp-16-1667-2020, 2020
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Phases of past transient warming can be used as a test bed to study the environmental response to climate change independent of tectonic change. Using fossil plankton and organic molecules, here we reconstruct surface ocean temperature and circulation in and around the Tasman Gateway during a warming phase 40 million years ago termed the Middle Eocene Climatic Optimum. We find that plankton assemblages track ocean circulation patterns, with superimposed variability being related to temperature.
Erin L. McClymont, Heather L. Ford, Sze Ling Ho, Julia C. Tindall, Alan M. Haywood, Montserrat Alonso-Garcia, Ian Bailey, Melissa A. Berke, Kate Littler, Molly O. Patterson, Benjamin Petrick, Francien Peterse, A. Christina Ravelo, Bjørg Risebrobakken, Stijn De Schepper, George E. A. Swann, Kaustubh Thirumalai, Jessica E. Tierney, Carolien van der Weijst, Sarah White, Ayako Abe-Ouchi, Michiel L. J. Baatsen, Esther C. Brady, Wing-Le Chan, Deepak Chandan, Ran Feng, Chuncheng Guo, Anna S. von der Heydt, Stephen Hunter, Xiangyi Li, Gerrit Lohmann, Kerim H. Nisancioglu, Bette L. Otto-Bliesner, W. Richard Peltier, Christian Stepanek, and Zhongshi Zhang
Clim. Past, 16, 1599–1615, https://doi.org/10.5194/cp-16-1599-2020, https://doi.org/10.5194/cp-16-1599-2020, 2020
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We examine the sea-surface temperature response to an interval of climate ~ 3.2 million years ago, when CO2 concentrations were similar to today and the near future. Our geological data and climate models show that global mean sea-surface temperatures were 2.3 to 3.2 ºC warmer than pre-industrial climate, that the mid-latitudes and high latitudes warmed more than the tropics, and that the warming was particularly enhanced in the North Atlantic Ocean.
Leticia G. Luz, Thiago P. Santos, Timothy I. Eglinton, Daniel Montluçon, Blanca Ausin, Negar Haghipour, Silvia M. Sousa, Renata H. Nagai, and Renato S. Carreira
Clim. Past, 16, 1245–1261, https://doi.org/10.5194/cp-16-1245-2020, https://doi.org/10.5194/cp-16-1245-2020, 2020
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Two sediment cores retrieved from the SE Brazilian continental margin were studied using multiple organic (alkenones) and inorganic (oxygen isotopes in carbonate shells and water) proxies to reconstruct the sea surface temperature (SST) over the last 50 000 years. The findings indicate the formation of strong thermal gradients in the region during the last climate transition, a feature that may become more frequent in the future scenario of global water circulation changes.
Jingjing Guo, Miriam Glendell, Jeroen Meersmans, Frédérique Kirkels, Jack J. Middelburg, and Francien Peterse
Biogeosciences, 17, 3183–3201, https://doi.org/10.5194/bg-17-3183-2020, https://doi.org/10.5194/bg-17-3183-2020, 2020
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The fluxes of soil organic carbon (OC) transport from land to sea are poorly constrained, mostly due to the lack of a specific tracer for soil OC. Here we evaluate the use of specific molecules derived from soil bacteria as a tracer for soil OC in a small river catchment. We find that the initial soil signal is lost upon entering the aquatic environment. However, the local environmental history of the catchment is reflected by these molecules in the lake sediments that act as their sink.
Emily Dearing Crampton-Flood, Lars J. Noorbergen, Damian Smits, R. Christine Boschman, Timme H. Donders, Dirk K. Munsterman, Johan ten Veen, Francien Peterse, Lucas Lourens, and Jaap S. Sinninghe Damsté
Clim. Past, 16, 523–541, https://doi.org/10.5194/cp-16-523-2020, https://doi.org/10.5194/cp-16-523-2020, 2020
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The mid-Pliocene warm period (mPWP; 3.3–3.0 million years ago) is thought to be the last geological interval with similar atmospheric carbon dioxide concentrations as the present day. Further, the mPWP was 2–3 °C warmer than present, making it a good analogue for estimating the effects of future climate change. Here, we construct a new precise age model for the North Sea during the mPWP, and provide a detailed reconstruction of terrestrial and marine climate using a multi-proxy approach.
Johannes Hepp, Imke Kathrin Schäfer, Verena Lanny, Jörg Franke, Marcel Bliedtner, Kazimierz Rozanski, Bruno Glaser, Michael Zech, Timothy Ian Eglinton, and Roland Zech
Biogeosciences, 17, 741–756, https://doi.org/10.5194/bg-17-741-2020, https://doi.org/10.5194/bg-17-741-2020, 2020
Tessa Sophia van der Voort, Utsav Mannu, Frank Hagedorn, Cameron McIntyre, Lorenz Walthert, Patrick Schleppi, Negar Haghipour, and Timothy Ian Eglinton
Biogeosciences, 16, 3233–3246, https://doi.org/10.5194/bg-16-3233-2019, https://doi.org/10.5194/bg-16-3233-2019, 2019
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The carbon stored in soils is the largest reservoir of organic carbon on land. In the context of greenhouse gas emissions and a changing climate, it is very important to understand how stable the carbon in the soil is and why. The deeper parts of the soil have often been overlooked even though they store a lot of carbon. In this paper, we discovered that although deep soil carbon is expected to be old and stable, there can be a significant young component that cycles much faster.
Charlotte Miller, Jemma Finch, Trevor Hill, Francien Peterse, Marc Humphries, Matthias Zabel, and Enno Schefuß
Clim. Past, 15, 1153–1170, https://doi.org/10.5194/cp-15-1153-2019, https://doi.org/10.5194/cp-15-1153-2019, 2019
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Here we reconstruct vegetation and precipitation, in eastern South Africa, over the last 32 000 years, by measuring the stable carbon and hydrogen isotope composition of plant waxes from Mfabeni peat bog (KwaZulu-Natal). Our results indicate that the late Quaternary climate in eastern South Africa did not respond directly to orbital forcing or to changes in sea-surface temperatures. Our findings stress the influence of the Southern Hemisphere westerlies in driving climate change in the region.
Yvonne Boose, Philipp Baloh, Michael Plötze, Johannes Ofner, Hinrich Grothe, Berko Sierau, Ulrike Lohmann, and Zamin A. Kanji
Atmos. Chem. Phys., 19, 1059–1076, https://doi.org/10.5194/acp-19-1059-2019, https://doi.org/10.5194/acp-19-1059-2019, 2019
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The role non-mineral components play in the freezing behavior of atmospheric desert dust is not well known. In this study, we use chemical imaging methods to investigate this for airborne and surface-collected desert dust samples. We find that in most cases the ice nucleation behavior is determined by the dust mineralogical composition. However, volatile organic material can coat active sites and decrease the dust ice nucleation ability, while biological particles can significantly increase it.
Liviu Giosan, William D. Orsi, Marco Coolen, Cornelia Wuchter, Ann G. Dunlea, Kaustubh Thirumalai, Samuel E. Munoz, Peter D. Clift, Jeffrey P. Donnelly, Valier Galy, and Dorian Q. Fuller
Clim. Past, 14, 1669–1686, https://doi.org/10.5194/cp-14-1669-2018, https://doi.org/10.5194/cp-14-1669-2018, 2018
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Climate reorganization during the early neoglacial anomaly (ENA) may explain the Harappan civilization metamorphosis from an urban, expansive culture to a rural, geographically-confined one. Landcover change is a candidate for causing this climate instability. During ENA agriculture along the flood-deficient floodplains of the Indus became too risky, which pushed people out. In the same time the Himalayan piedmont received augmented winter rain and steady summer precipitation, pulling people in.
Loeka L. Jongejans, Jens Strauss, Josefine Lenz, Francien Peterse, Kai Mangelsdorf, Matthias Fuchs, and Guido Grosse
Biogeosciences, 15, 6033–6048, https://doi.org/10.5194/bg-15-6033-2018, https://doi.org/10.5194/bg-15-6033-2018, 2018
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Arctic warming mobilizes belowground organic matter in northern high latitudes. This study focused on the size of organic carbon pools and organic matter quality in ice-rich permafrost on the Baldwin Peninsula, West Alaska. We analyzed biogeochemistry and found that three-quarters of the carbon is stored in degraded permafrost deposits. Nonetheless, using biomarker analyses, we showed that the organic matter in undisturbed yedoma permafrost has a higher potential for decomposition.
Julian D. Hartman, Francesca Sangiorgi, Ariadna Salabarnada, Francien Peterse, Alexander J. P. Houben, Stefan Schouten, Henk Brinkhuis, Carlota Escutia, and Peter K. Bijl
Clim. Past, 14, 1275–1297, https://doi.org/10.5194/cp-14-1275-2018, https://doi.org/10.5194/cp-14-1275-2018, 2018
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We reconstructed sea surface temperatures for the Oligocene and Miocene periods (34–11 Ma) based on archaeal lipids from a site close to the Wilkes Land coast, Antarctica. Our record suggests generally warm to temperate surface waters: on average 17 °C. Based on the lithology, glacial and interglacial temperatures could be distinguished, showing an average 3 °C offset. The long-term temperature trend resembles the benthic δ18O stack, which may have implications for ice volume reconstructions.
Julie Lattaud, Frédérique Kirkels, Francien Peterse, Chantal V. Freymond, Timothy I. Eglinton, Jens Hefter, Gesine Mollenhauer, Sergio Balzano, Laura Villanueva, Marcel T. J. van der Meer, Ellen C. Hopmans, Jaap S. Sinninghe Damsté, and Stefan Schouten
Biogeosciences, 15, 4147–4161, https://doi.org/10.5194/bg-15-4147-2018, https://doi.org/10.5194/bg-15-4147-2018, 2018
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Long-chain diols (LCDs) are biomarkers that occur widespread in marine environments and also in lakes and rivers. In this study, we looked at the distribution of LCDs in three river systems (Godavari, Danube, and Rhine) in relation to season, precipitation, and temperature. We found out that the LCDs are likely being produced in calm areas of the river systems and that marine LCDs have a different distribution than riverine LCDs.
Liviu Giosan, Thet Naing, Myo Min Tun, Peter D. Clift, Florin Filip, Stefan Constantinescu, Nitesh Khonde, Jerzy Blusztajn, Jan-Pieter Buylaert, Thomas Stevens, and Swe Thwin
Earth Surf. Dynam., 6, 451–466, https://doi.org/10.5194/esurf-6-451-2018, https://doi.org/10.5194/esurf-6-451-2018, 2018
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Here we provide the first results on the evolution of the Ayeyarwady delta, the last unstudied megadelta of Asia. In addition to its intrinsic value as a founding study on the Holocene development of this region, we advance new ideas on the climate control of monsoonal deltas as well as describe for the first time a feedback mechanism between tectonics and tidal hydrodynamics that can explain the peculiarities of the Ayeyarwady delta.
Timme H. Donders, Niels A. G. M. van Helmond, Roel Verreussel, Dirk Munsterman, Johan ten Veen, Robert P. Speijer, Johan W. H. Weijers, Francesca Sangiorgi, Francien Peterse, Gert-Jan Reichart, Jaap S. Sinninghe Damsté, Lucas Lourens, Gesa Kuhlmann, and Henk Brinkhuis
Clim. Past, 14, 397–411, https://doi.org/10.5194/cp-14-397-2018, https://doi.org/10.5194/cp-14-397-2018, 2018
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The buildup and melting of ice during the early glaciations in the Northern Hemisphere, around 2.5 million years ago, were far shorter in duration than during the last million years. Based on molecular compounds and microfossils from sediments dating back to the early glaciations we show that the temperature on land and in the sea changed simultaneously and was a major factor in the ice buildup in the Northern Hemisphere. These data provide key insights into the dynamics of early glaciations.
Blanca Ausín, Diana Zúñiga, Jose A. Flores, Catarina Cavaleiro, María Froján, Nicolás Villacieros-Robineau, Fernando Alonso-Pérez, Belén Arbones, Celia Santos, Francisco de la Granda, Carmen G. Castro, Fátima Abrantes, Timothy I. Eglinton, and Emilia Salgueiro
Biogeosciences, 15, 245–262, https://doi.org/10.5194/bg-15-245-2018, https://doi.org/10.5194/bg-15-245-2018, 2018
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A systematic investigation of the coccolithophore ecology was performed for the first time in the NW Iberian Margin to broaden our knowledge on the use of fossil coccoliths in marine sediment records to infer environmental conditions in the past. Coccolithophores proved to be significant primary producers and their abundance and distribution was favoured by warmer and nutrient–depleted waters during the upwelling regime, seasonally controlled offshore and influenced by coastal processes onshore.
Lorenz Wüthrich, Claudio Brändli, Régis Braucher, Heinz Veit, Negar Haghipour, Carla Terrizzano, Marcus Christl, Christian Gnägi, and Roland Zech
E&G Quaternary Sci. J., 66, 57–68, https://doi.org/10.5194/egqsj-66-57-2017, https://doi.org/10.5194/egqsj-66-57-2017, 2017
Liviu Giosan, Camilo Ponton, Muhammed Usman, Jerzy Blusztajn, Dorian Q. Fuller, Valier Galy, Negar Haghipour, Joel E. Johnson, Cameron McIntyre, Lukas Wacker, and Timothy I. Eglinton
Earth Surf. Dynam., 5, 781–789, https://doi.org/10.5194/esurf-5-781-2017, https://doi.org/10.5194/esurf-5-781-2017, 2017
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A reconstruction of erosion in the core monsoon zone of India provides unintuitive but fundamental insights: in contrast to semiarid regions that experience enhanced erosion during erratic rain events, the monsoon is annual and acts as a veritable
erosional pumpaccelerating when the land cover is minimal. The existence of such a monsoon erosional pump promises to reconcile conflicting views on the land–sea sediment and carbon transfer as well as the monsoon evolution on longer timescales.
Jaap H. Nienhuis, Andrew D. Ashton, Albert J. Kettner, and Liviu Giosan
Earth Surf. Dynam., 5, 585–603, https://doi.org/10.5194/esurf-5-585-2017, https://doi.org/10.5194/esurf-5-585-2017, 2017
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The Ebro Delta in Spain has a distinctive coastline shape, the origin of which has been debated. Here we show with two simple models, one of the Ebro River and one of its delta, that is it possible to reproduce this distinctive shape under constant sediment supply, wave climate, and sea-level conditions. We also find that the majority of the delta grew in the last 2000 years, when a great increase in sediment supply from the Ebro River allowed it to accelerate its growth.
Maarten Lupker, Jérôme Lavé, Christian France-Lanord, Marcus Christl, Didier Bourlès, Julien Carcaillet, Colin Maden, Rainer Wieler, Mustafizur Rahman, Devojit Bezbaruah, and Liu Xiaohan
Earth Surf. Dynam., 5, 429–449, https://doi.org/10.5194/esurf-5-429-2017, https://doi.org/10.5194/esurf-5-429-2017, 2017
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We use geochemical approaches (10Be) on river sediments to quantify the erosion rates across the Tsangpo-Brahmaputra (TB) catchment in the eastern Himalayas. Our approach confirms the high erosion rates in the eastern Himalayan syntaxis region and we suggest that the abrasion of landslide material in the syntaxis is a key process in explaining how erosion signals are transferred to the sediment load.
Imke K. Schäfer, Verena Lanny, Jörg Franke, Timothy I. Eglinton, Michael Zech, Barbora Vysloužilová, and Roland Zech
SOIL, 2, 551–564, https://doi.org/10.5194/soil-2-551-2016, https://doi.org/10.5194/soil-2-551-2016, 2016
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For this study we systematically investigated the molecular pattern of leaf waxes in litter and topsoils along a European transect to assess their potential for palaeoenvironmental reconstruction. Our results show that leaf wax patterns depend on the type of vegetation. The vegetation signal is not only found in the litter; it can also be preserved to some degree in the topsoil.
Robert B. Sparkes, Ayça Doğrul Selver, Örjan Gustafsson, Igor P. Semiletov, Negar Haghipour, Lukas Wacker, Timothy I. Eglinton, Helen M. Talbot, and Bart E. van Dongen
The Cryosphere, 10, 2485–2500, https://doi.org/10.5194/tc-10-2485-2016, https://doi.org/10.5194/tc-10-2485-2016, 2016
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The permafrost in eastern Siberia contains large amounts of carbon frozen in soils and sediments. Continuing global warming is thawing the permafrost and releasing carbon to the Arctic Ocean. We used pyrolysis-GCMS, a chemical fingerprinting technique, to study the types of carbon being deposited on the continental shelf. We found large amounts of permafrost-sourced carbon being deposited up to 200 km offshore.
Maarten Lupker, Christian France-Lanord, and Bruno Lartiges
Earth Surf. Dynam., 4, 675–684, https://doi.org/10.5194/esurf-4-675-2016, https://doi.org/10.5194/esurf-4-675-2016, 2016
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Rivers export the products of continental weathering to the oceans. It is important to accurately constrain these fluxes to better understand global biogeochemical cycles. The riverine export of major cation species in particular contributes to regulate the long-term carbon cycle. In this work we quantify some additional fluxes to the ocean that may occur when solid sediments react with seawater in estuaries. These fluxes have been only poorly constrained so far.
Tessa Sophia van der Voort, Frank Hagedorn, Cameron McIntyre, Claudia Zell, Lorenz Walthert, Patrick Schleppi, Xiaojuan Feng, and Timothy Ian Eglinton
Biogeosciences, 13, 3427–3439, https://doi.org/10.5194/bg-13-3427-2016, https://doi.org/10.5194/bg-13-3427-2016, 2016
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This study explores heterogeneity in 14C content of soil organic matter (SOM) at different spatial scales and across climatic and geologic gradients, which is essential for a better understanding of SOM stability. Results reveal that despite dissimilar environmental conditions, 14C contents in topsoils is relatively uniform and 14C trends with depth are similar. Plot-scale variability is significant. Statistical analysis found a significant correlation of 14C contents (0–5 cm) and temperature.
F. Peterse, C. M. Moy, and T. I. Eglinton
Biogeosciences, 12, 933–943, https://doi.org/10.5194/bg-12-933-2015, https://doi.org/10.5194/bg-12-933-2015, 2015
Related subject area
Biogeochemistry: Land - Sea Coupling
Reconciling the paradox of soil organic carbon erosion by water
The dispersal of fluvially discharged and marine, shelf-produced particulate organic matter in the northern Gulf of Mexico
Carbon dynamics at the river–estuarine transition: a comparison among tributaries of Chesapeake Bay
From soil to sea: sources and transport of organic carbon traced by tetraether lipids in the monsoonal Godavari River, India
Dissolved organic matter characterization in soils and streams in a small coastal low-Arctic catchment
Regional-scale phytoplankton dynamics and their association with glacier meltwater runoff in Svalbard
Riverine nitrogen supply to the global ocean and its limited impact on global marine primary production: a feedback study using an Earth system model
Rain-fed streams dilute inorganic nutrients but subsidise organic-matter-associated nutrients in coastal waters of the northeast Pacific Ocean
Ideas and perspectives: Biogeochemistry – some key foci for the future
Spatio-temporal variations in lateral and atmospheric carbon fluxes from the Danube Delta
Technical note: Seamless gas measurements across the land–ocean aquatic continuum – corrections and evaluation of sensor data for CO2, CH4 and O2 from field deployments in contrasting environments
Enrichment of trace metals from acid sulfate soils in sediments of the Kvarken Archipelago, eastern Gulf of Bothnia, Baltic Sea
Organic iron complexes enhance iron transport capacity along estuarine salinity gradients of Baltic estuaries
Particulate organic matter controls benthic microbial N retention and N removal in contrasting estuaries of the Baltic Sea
Export fluxes of dissolved inorganic carbon to the northern Indian Ocean from the Indian monsoonal rivers
The ballast effect of lithogenic matter and its influences on the carbon fluxes in the Indian Ocean
Integrating multimedia models to assess nitrogen losses from the Mississippi River basin to the Gulf of Mexico
Impacts of flocculation on the distribution and diagenesis of iron in boreal estuarine sediments
Sources, fluxes, and behaviors of fluorescent dissolved organic matter (FDOM) in the Nakdong River Estuary, Korea
Effects of changes in nutrient loading and composition on hypoxia dynamics and internal nutrient cycling of a stratified coastal lagoon
Carbon degradation in agricultural soils flooded with seawater after managed coastal realignment
A global hotspot for dissolved organic carbon in hypermaritime watersheds of coastal British Columbia
Nitrogen transformations along a shallow subterranean estuary
Modelling nutrient retention in the coastal zone of an eutrophic sea
Patterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrost
Modelling the impact of riverine DON removal by marine bacterioplankton on primary production in the Arctic Ocean
Seasonal response of air–water CO2 exchange along the land–ocean aquatic continuum of the northeast North American coast.
Quantification of iron-rich volcanogenic dust emissions and deposition over the ocean from Icelandic dust sources
Effects of seabird nitrogen input on biomass and carbon accumulation after 50 years of primary succession on a young volcanic island, Surtsey
Impact of river discharge, upwelling and vertical mixing on the nutrient loading and productivity of the Canadian Beaufort Shelf
Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments
Antarctic ice sheet fertilises the Southern Ocean
Nutrient dynamics in tropical rivers, lagoons, and coastal ecosystems of eastern Hainan Island, South China Sea
Bioavailability of riverine dissolved organic matter in three Baltic Sea estuaries and the effect of catchment land use
Seasonal dissolved inorganic nitrogen and phosphorus budgets for two sub-tropical estuaries in south Florida, USA
Export of 134 Cs and 137 Cs in the Fukushima river systems at heavy rains by Typhoon Roke in September 2011
The fate of riverine nutrients on Arctic shelves
External forcings, oceanographic processes and particle flux dynamics in Cap de Creus submarine canyon, NW Mediterranean Sea
Radium-based estimates of cesium isotope transport and total direct ocean discharges from the Fukushima Nuclear Power Plant accident
Tracing inputs of terrestrial high molecular weight dissolved organic matter within the Baltic Sea ecosystem
The role of alkalinity generation in controlling the fluxes of CO2 during exposure and inundation on tidal flats
Coupling of fog and marine microbial content in the near-shore coastal environment
Spatialized N budgets in a large agricultural Mediterranean watershed: high loading and low transfer
Effects of water discharge and sediment load on evolution of modern Yellow River Delta, China, over the period from 1976 to 2009
Carbon isotopes and lipid biomarker investigation of sources, transport and degradation of terrestrial organic matter in the Buor-Khaya Bay, SE Laptev Sea
Contribution of riverine nutrients to the silicon biogeochemistry of the global ocean – a model study
Molecular and radiocarbon constraints on sources and degradation of terrestrial organic carbon along the Kolyma paleoriver transect, East Siberian Sea
Impact of changes in river fluxes of silica on the global marine silicon cycle: a model comparison
Kristof Van Oost and Johan Six
Biogeosciences, 20, 635–646, https://doi.org/10.5194/bg-20-635-2023, https://doi.org/10.5194/bg-20-635-2023, 2023
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The direction and magnitude of the net erosion-induced land–atmosphere C exchange have been the topic of a big scientific debate for more than a decade now. Many have assumed that erosion leads to a loss of soil carbon to the atmosphere, whereas others have shown that erosion ultimately leads to a carbon sink. Here, we show that the soil carbon erosion source–sink paradox is reconciled when the broad range of temporal and spatial scales at which the underlying processes operate are considered.
Yord W. Yedema, Francesca Sangiorgi, Appy Sluijs, Jaap S. Sinninghe Damsté, and Francien Peterse
Biogeosciences, 20, 663–686, https://doi.org/10.5194/bg-20-663-2023, https://doi.org/10.5194/bg-20-663-2023, 2023
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Terrestrial organic matter (TerrOM) is transported to the ocean by rivers, where its burial can potentially form a long-term carbon sink. This burial is dependent on the type and characteristics of the TerrOM. We used bulk sediment properties, biomarkers, and palynology to identify the dispersal patterns of plant-derived, soil–microbial, and marine OM in the northern Gulf of Mexico and show that plant-derived OM is transported further into the coastal zone than soil and marine-produced TerrOM.
Paul A. Bukaveckas
Biogeosciences, 19, 4209–4226, https://doi.org/10.5194/bg-19-4209-2022, https://doi.org/10.5194/bg-19-4209-2022, 2022
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Inland waters play an important role in the global carbon cycle by storing, transforming and transporting carbon from land to sea. Comparatively little is known about carbon dynamics at the river–estuarine transition. A study of tributaries of Chesapeake Bay showed that biological processes exerted a strong effect on carbon transformations. Peak carbon retention occurred during periods of elevated river discharge and was associated with trapping of particulate matter.
Frédérique M. S. A. Kirkels, Huub M. Zwart, Muhammed O. Usman, Suning Hou, Camilo Ponton, Liviu Giosan, Timothy I. Eglinton, and Francien Peterse
Biogeosciences, 19, 3979–4010, https://doi.org/10.5194/bg-19-3979-2022, https://doi.org/10.5194/bg-19-3979-2022, 2022
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Soil organic carbon (SOC) that is transferred to the ocean by rivers forms a long-term sink of atmospheric CO2 upon burial on the ocean floor. We here test if certain bacterial membrane lipids can be used to trace SOC through the monsoon-fed Godavari River basin in India. We find that these lipids trace the mobilisation and transport of SOC in the wet season but that these lipids are not transferred far into the sea. This suggests that the burial of SOC on the sea floor is limited here.
Niek Jesse Speetjens, George Tanski, Victoria Martin, Julia Wagner, Andreas Richter, Gustaf Hugelius, Chris Boucher, Rachele Lodi, Christian Knoblauch, Boris P. Koch, Urban Wünsch, Hugues Lantuit, and Jorien E. Vonk
Biogeosciences, 19, 3073–3097, https://doi.org/10.5194/bg-19-3073-2022, https://doi.org/10.5194/bg-19-3073-2022, 2022
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Climate change and warming in the Arctic exceed global averages. As a result, permanently frozen soils (permafrost) which store vast quantities of carbon in the form of dead plant material (organic matter) are thawing. Our study shows that as permafrost landscapes degrade, high concentrations of organic matter are released. Partly, this organic matter is degraded rapidly upon release, while another significant fraction enters stream networks and enters the Arctic Ocean.
Thorben Dunse, Kaixing Dong, Kjetil Schanke Aas, and Leif Christian Stige
Biogeosciences, 19, 271–294, https://doi.org/10.5194/bg-19-271-2022, https://doi.org/10.5194/bg-19-271-2022, 2022
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We investigate the effect of glacier meltwater on phytoplankton dynamics in Svalbard. Phytoplankton forms the basis of the marine food web, and its seasonal dynamics depend on the availability of light and nutrients, both of which are affected by glacier runoff. We use satellite ocean color, an indicator of phytoplankton biomass, and glacier mass balance modeling to find that the overall effect of glacier runoff on marine productivity is positive within the major fjord systems of Svalbard.
Miriam Tivig, David P. Keller, and Andreas Oschlies
Biogeosciences, 18, 5327–5350, https://doi.org/10.5194/bg-18-5327-2021, https://doi.org/10.5194/bg-18-5327-2021, 2021
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Nitrogen is one of the most important elements for life in the ocean. A major source is the riverine discharge of dissolved nitrogen. While global models often omit rivers as a nutrient source, we included nitrogen from rivers in our Earth system model and found that additional nitrogen affected marine biology not only locally but also in regions far off the coast. Depending on regional conditions, primary production was enhanced or even decreased due to internal feedbacks in the nitrogen cycle.
Kyra A. St. Pierre, Brian P. V. Hunt, Suzanne E. Tank, Ian Giesbrecht, Maartje C. Korver, William C. Floyd, Allison A. Oliver, and Kenneth P. Lertzman
Biogeosciences, 18, 3029–3052, https://doi.org/10.5194/bg-18-3029-2021, https://doi.org/10.5194/bg-18-3029-2021, 2021
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Using 4 years of paired freshwater and marine water chemistry from the Central Coast of British Columbia (Canada), we show that coastal temperate rainforest streams are sources of organic nitrogen, iron, and carbon to the Pacific Ocean but not the inorganic nutrients easily used by marine phytoplankton. This distinction may have important implications for coastal food webs and highlights the need to sample all nutrients in fresh and marine waters year-round to fully understand coastal dynamics.
Thomas S. Bianchi, Madhur Anand, Chris T. Bauch, Donald E. Canfield, Luc De Meester, Katja Fennel, Peter M. Groffman, Michael L. Pace, Mak Saito, and Myrna J. Simpson
Biogeosciences, 18, 3005–3013, https://doi.org/10.5194/bg-18-3005-2021, https://doi.org/10.5194/bg-18-3005-2021, 2021
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Better development of interdisciplinary ties between biology, geology, and chemistry advances biogeochemistry through (1) better integration of contemporary (or rapid) evolutionary adaptation to predict changing biogeochemical cycles and (2) universal integration of data from long-term monitoring sites in terrestrial, aquatic, and human systems that span broad geographical regions for use in modeling.
Marie-Sophie Maier, Cristian R. Teodoru, and Bernhard Wehrli
Biogeosciences, 18, 1417–1437, https://doi.org/10.5194/bg-18-1417-2021, https://doi.org/10.5194/bg-18-1417-2021, 2021
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Based on a 2-year monitoring study, we found that the freshwater system of the Danube Delta, Romania, releases carbon dioxide and methane to the atmosphere. The amount of carbon released depends on the freshwater feature (river branches, channels and lakes), season and hydrologic condition, affecting the exchange with the wetland. Spatial upscaling should therefore consider these factors. Furthermore, the Danube Delta increases the amount of carbon reaching the Black Sea via the Danube River.
Anna Rose Canning, Peer Fietzek, Gregor Rehder, and Arne Körtzinger
Biogeosciences, 18, 1351–1373, https://doi.org/10.5194/bg-18-1351-2021, https://doi.org/10.5194/bg-18-1351-2021, 2021
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The paper describes a novel, fully autonomous, multi-gas flow-through set-up for multiple gases that combines established, high-quality oceanographic sensors in a small and robust system designed for use across all salinities and all types of platforms. We describe the system and its performance in all relevant detail, including the corrections which improve the accuracy of these sensors, and illustrate how simultaneous multi-gas set-ups can provide an extremely high spatiotemporal resolution.
Joonas J. Virtasalo, Peter Österholm, Aarno T. Kotilainen, and Mats E. Åström
Biogeosciences, 17, 6097–6113, https://doi.org/10.5194/bg-17-6097-2020, https://doi.org/10.5194/bg-17-6097-2020, 2020
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Rivers draining the acid sulphate soils of western Finland deliver large amounts of metals (e.g. Cd, Co, Cu, La, Mn, Ni, and Zn) to the coastal sea. To better understand metal enrichment in the sea floor, we analysed metal contents and grain size distribution in nine sediment cores, which increased in the 1960s and 1970s and stayed at high levels afterwards. The enrichment is visible more than 25 km out from the river mouths. Organic aggregates are suggested as the key seaward metal carriers.
Simon David Herzog, Per Persson, Kristina Kvashnina, and Emma Sofia Kritzberg
Biogeosciences, 17, 331–344, https://doi.org/10.5194/bg-17-331-2020, https://doi.org/10.5194/bg-17-331-2020, 2020
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Fe concentrations in boreal rivers are increasing strongly in several regions in Northern Europe. This study focuses on how Fe speciation and interaction with organic matter affect stability of Fe across estuarine salinity gradients. The results confirm a positive relationship between the relative contribution of organically complexed Fe and stability. Moreover, organically complexed Fe was more prevalent at high flow conditions and more dominant further upstream in a catchment.
Ines Bartl, Dana Hellemann, Christophe Rabouille, Kirstin Schulz, Petra Tallberg, Susanna Hietanen, and Maren Voss
Biogeosciences, 16, 3543–3564, https://doi.org/10.5194/bg-16-3543-2019, https://doi.org/10.5194/bg-16-3543-2019, 2019
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Irrespective of variable environmental settings in estuaries, the quality of organic particles is an important factor controlling microbial processes that facilitate a reduction of land-derived nitrogen loads to the open sea. Through the interplay of biogeochemical processing, geomorphology, and hydrodynamics, organic particles may function as a carrier and temporary reservoir of nitrogen, which has a major impact on the efficiency of nitrogen load reduction.
Moturi S. Krishna, Rongali Viswanadham, Mamidala H. K. Prasad, Vuravakonda R. Kumari, and Vedula V. S. S. Sarma
Biogeosciences, 16, 505–519, https://doi.org/10.5194/bg-16-505-2019, https://doi.org/10.5194/bg-16-505-2019, 2019
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An order-of-magnitude variability in DIC was found within the Indian estuaries due to significant variability in size of rivers, precipitation pattern and lithology in the catchments. Indian monsoonal estuaries annually export ∼ 10.3 Tg of DIC to the northern Indian Ocean, of which 75 % enters into the Bay of Bengal. Our results indicated that chemical weathering of carbonate and silicate minerals by soil CO2 is the major source of DIC in the Indian monsoonal rivers.
Tim Rixen, Birgit Gaye, Kay-Christian Emeis, and Venkitasubramani Ramaswamy
Biogeosciences, 16, 485–503, https://doi.org/10.5194/bg-16-485-2019, https://doi.org/10.5194/bg-16-485-2019, 2019
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Data obtained from sediment trap experiments in the Indian Ocean indicate that lithogenic matter ballast increases organic carbon flux rates on average by 45 % and by up to 62 % at trap locations in the river-influenced regions of the Indian Ocean. Such a strong lithogenic matter ballast effect implies that land use changes and the associated enhanced transport of lithogenic matter may significantly affect the CO2 uptake of the organic carbon pump in the receiving ocean areas.
Yongping Yuan, Ruoyu Wang, Ellen Cooter, Limei Ran, Prasad Daggupati, Dongmei Yang, Raghavan Srinivasan, and Anna Jalowska
Biogeosciences, 15, 7059–7076, https://doi.org/10.5194/bg-15-7059-2018, https://doi.org/10.5194/bg-15-7059-2018, 2018
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Elevated levels of nutrients in surface water, which originate from deposition of atmospheric N, drainage from agricultural fields, and discharges from sewage treatment plants, cause explosive algal blooms that impair water quality. The complex cycling of nutrients through the land, air, and water requires an integrated multimedia modeling system linking air, land surface, and stream processes to assess their sources, transport, and transformation in large river basins for decision making.
Tom Jilbert, Eero Asmala, Christian Schröder, Rosa Tiihonen, Jukka-Pekka Myllykangas, Joonas J. Virtasalo, Aarno Kotilainen, Pasi Peltola, Päivi Ekholm, and Susanna Hietanen
Biogeosciences, 15, 1243–1271, https://doi.org/10.5194/bg-15-1243-2018, https://doi.org/10.5194/bg-15-1243-2018, 2018
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Iron is a common dissolved element in river water, recognizable by its orange-brown colour. Here we show that when rivers reach the ocean much of this iron settles to the sediments by a process known as flocculation. The iron is then used by microbes in coastal sediments, which are important hotspots in the global carbon cycle.
Shin-Ah Lee and Guebuem Kim
Biogeosciences, 15, 1115–1122, https://doi.org/10.5194/bg-15-1115-2018, https://doi.org/10.5194/bg-15-1115-2018, 2018
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The fluorescent dissolved organic matter (FDOM) delivered from riverine discharges significantly affects carbon and biogeochemical cycles in coastal waters. Our results show that the terrestrial concentrations of humic-like FDOM in river water were 60–80 % higher in the summer and fall, while the in situ production of protein-like FDOM was 70–80 % higher in the spring. Our results suggest that there are large seasonal changes in riverine fluxes of FDOM components to the ocean.
Yafei Zhu, Andrew McCowan, and Perran L. M. Cook
Biogeosciences, 14, 4423–4433, https://doi.org/10.5194/bg-14-4423-2017, https://doi.org/10.5194/bg-14-4423-2017, 2017
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We used a 3-D coupled hydrodynamic–biogeochemical water quality model to investigate the effects of changes in catchment nutrient loading and composition on the phytoplankton dynamics, development of hypoxia and internal nutrient dynamics in a stratified coastal lagoon system. The results highlighted the need to reduce both total nitrogen and total phosphorus for water quality improvement in estuarine systems.
Kamilla S. Sjøgaard, Alexander H. Treusch, and Thomas B. Valdemarsen
Biogeosciences, 14, 4375–4389, https://doi.org/10.5194/bg-14-4375-2017, https://doi.org/10.5194/bg-14-4375-2017, 2017
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Permanent flooding of low-lying coastal areas is a growing threat due to climate-change-related sea-level rise. To reduce coastal damage, buffer zones can be created by managed coastal realignment where existing dykes are breached and new dykes are built further inland. We studied the impacts on organic matter degradation in soils flooded with seawater by managed coastal realignment and suggest that most of the organic carbon present in coastal soils will be permanently preserved after flooding.
Allison A. Oliver, Suzanne E. Tank, Ian Giesbrecht, Maartje C. Korver, William C. Floyd, Paul Sanborn, Chuck Bulmer, and Ken P. Lertzman
Biogeosciences, 14, 3743–3762, https://doi.org/10.5194/bg-14-3743-2017, https://doi.org/10.5194/bg-14-3743-2017, 2017
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Rivers draining small watersheds of the outer coastal Pacific temperate rainforest export some of the highest yields of dissolved organic carbon (DOC) in the world directly to the ocean. This DOC is largely derived from soils and terrestrial plants. Rainfall, temperature, and watershed characteristics such as wetlands and lakes are important controls on DOC export. This region may be significant for carbon export and linking terrestrial carbon to marine ecosystems.
Mathilde Couturier, Gwendoline Tommi-Morin, Maude Sirois, Alexandra Rao, Christian Nozais, and Gwénaëlle Chaillou
Biogeosciences, 14, 3321–3336, https://doi.org/10.5194/bg-14-3321-2017, https://doi.org/10.5194/bg-14-3321-2017, 2017
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At the land–ocean interface, subterranean estuaries (STEs) are a critical transition pathway of nitrogen. Environmental conditions in the groundwater lead to nitrogen transformation, altering the nitrogen species and concentrations exported to the coastal ocean. This study highlights the role of a STE in processing groundwater-derived N in a shallow boreal STE, far from anthropogenic pressures. Biogeochemical transformations provide new N species from terrestrial origin to the coastal ocean.
Elin Almroth-Rosell, Moa Edman, Kari Eilola, H. E. Markus Meier, and Jörgen Sahlberg
Biogeosciences, 13, 5753–5769, https://doi.org/10.5194/bg-13-5753-2016, https://doi.org/10.5194/bg-13-5753-2016, 2016
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Nutrients from land have been discussed to increase eutrophication in the open sea. This model study shows that the coastal zone works as an efficient filter. Water depth and residence time regulate the retention that occurs mostly in the sediment due to processes such as burial and denitrification. On shorter timescales the retention capacity might seem less effective when the land load of nutrients decreases, but with time the coastal zone can import nutrients from the open sea.
B. W. Abbott, J. B. Jones, S. E. Godsey, J. R. Larouche, and W. B. Bowden
Biogeosciences, 12, 3725–3740, https://doi.org/10.5194/bg-12-3725-2015, https://doi.org/10.5194/bg-12-3725-2015, 2015
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As high latitudes warm, carbon and nitrogen stored in permafrost soil will be vulnerable to erosion and transport to Arctic streams and rivers. We sampled outflow from 83 permafrost collapse features in Alaska. Permafrost collapse caused substantial increases in dissolved organic carbon and inorganic nitrogen but decreased methane concentration by 90%. Upland thermokarst may be a dominant linkage transferring carbon and nutrients from terrestrial to aquatic ecosystems as the Arctic warms.
V. Le Fouest, M. Manizza, B. Tremblay, and M. Babin
Biogeosciences, 12, 3385–3402, https://doi.org/10.5194/bg-12-3385-2015, https://doi.org/10.5194/bg-12-3385-2015, 2015
G. G. Laruelle, R. Lauerwald, J. Rotschi, P. A. Raymond, J. Hartmann, and P. Regnier
Biogeosciences, 12, 1447–1458, https://doi.org/10.5194/bg-12-1447-2015, https://doi.org/10.5194/bg-12-1447-2015, 2015
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This study quantifies the exchange of carbon dioxide (CO2) between the atmosphere and the land-ocean aquatic continuum (LOAC) of the northeast North American coast, which consists of rivers, estuaries, and the coastal ocean. Our analysis reveals significant variations of the flux intensity both in time and space across the study area. Ice cover, snowmelt, and the intensity of the estuarine filter are identified as important control factors of the CO2 exchange along the LOAC.
O. Arnalds, H. Olafsson, and P. Dagsson-Waldhauserova
Biogeosciences, 11, 6623–6632, https://doi.org/10.5194/bg-11-6623-2014, https://doi.org/10.5194/bg-11-6623-2014, 2014
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Iceland is one of the largest dust sources on Earth. Based on two separate methods, we estimate dust emissions to range between 30 and 40 million tons annually. Ocean deposition ranges between 5.5 and 13.8 million tons. Calculated iron deposition in oceans around Iceland ranges between 0.56 to 1.4 million tons, which are distributed over wide areas. Iron is a limiting nutrient for primary production in these waters, and dust is likely to affect oceanic Fe levels around Iceland.
N. I. W. Leblans, B. D. Sigurdsson, P. Roefs, R. Thuys, B. Magnússon, and I. A. Janssens
Biogeosciences, 11, 6237–6250, https://doi.org/10.5194/bg-11-6237-2014, https://doi.org/10.5194/bg-11-6237-2014, 2014
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We studied the influence of allochthonous N inputs on primary succession and soil development of a 50-year-old volcanic island, Surtsey. Seabirds increased the ecosystem N accumulation rate inside their colony to ~47 kg ha-1 y-1, compared to 0.7 kg ha-1 y-1 outside it. A strong relationship was found between total ecosystem N stock and both total above- and belowground biomass and SOC stock, which shows how fast external N input can boost primary succession and soil formation.
J.-É. Tremblay, P. Raimbault, N. Garcia, B. Lansard, M. Babin, and J. Gagnon
Biogeosciences, 11, 4853–4868, https://doi.org/10.5194/bg-11-4853-2014, https://doi.org/10.5194/bg-11-4853-2014, 2014
H. E. Reader, C. A. Stedmon, and E. S. Kritzberg
Biogeosciences, 11, 3409–3419, https://doi.org/10.5194/bg-11-3409-2014, https://doi.org/10.5194/bg-11-3409-2014, 2014
R. Death, J. L. Wadham, F. Monteiro, A. M. Le Brocq, M. Tranter, A. Ridgwell, S. Dutkiewicz, and R. Raiswell
Biogeosciences, 11, 2635–2643, https://doi.org/10.5194/bg-11-2635-2014, https://doi.org/10.5194/bg-11-2635-2014, 2014
R. H. Li, S. M. Liu, Y. W. Li, G. L. Zhang, J. L. Ren, and J. Zhang
Biogeosciences, 11, 481–506, https://doi.org/10.5194/bg-11-481-2014, https://doi.org/10.5194/bg-11-481-2014, 2014
E. Asmala, R. Autio, H. Kaartokallio, L. Pitkänen, C. A. Stedmon, and D. N. Thomas
Biogeosciences, 10, 6969–6986, https://doi.org/10.5194/bg-10-6969-2013, https://doi.org/10.5194/bg-10-6969-2013, 2013
C. Buzzelli, Y. Wan, P. H. Doering, and J. N. Boyer
Biogeosciences, 10, 6721–6736, https://doi.org/10.5194/bg-10-6721-2013, https://doi.org/10.5194/bg-10-6721-2013, 2013
S. Nagao, M. Kanamori, S. Ochiai, S. Tomihara, K. Fukushi, and M. Yamamoto
Biogeosciences, 10, 6215–6223, https://doi.org/10.5194/bg-10-6215-2013, https://doi.org/10.5194/bg-10-6215-2013, 2013
V. Le Fouest, M. Babin, and J.-É. Tremblay
Biogeosciences, 10, 3661–3677, https://doi.org/10.5194/bg-10-3661-2013, https://doi.org/10.5194/bg-10-3661-2013, 2013
A. Rumín-Caparrós, A. Sanchez-Vidal, A. Calafat, M. Canals, J. Martín, P. Puig, and R. Pedrosa-Pàmies
Biogeosciences, 10, 3493–3505, https://doi.org/10.5194/bg-10-3493-2013, https://doi.org/10.5194/bg-10-3493-2013, 2013
M. A. Charette, C. F. Breier, P. B. Henderson, S. M. Pike, I. I. Rypina, S. R. Jayne, and K. O. Buesseler
Biogeosciences, 10, 2159–2167, https://doi.org/10.5194/bg-10-2159-2013, https://doi.org/10.5194/bg-10-2159-2013, 2013
B. Deutsch, V. Alling, C. Humborg, F. Korth, and C. M. Mörth
Biogeosciences, 9, 4465–4475, https://doi.org/10.5194/bg-9-4465-2012, https://doi.org/10.5194/bg-9-4465-2012, 2012
P. A. Faber, A. J. Kessler, J. K. Bull, I. D. McKelvie, F. J. R. Meysman, and P. L. M. Cook
Biogeosciences, 9, 4087–4097, https://doi.org/10.5194/bg-9-4087-2012, https://doi.org/10.5194/bg-9-4087-2012, 2012
M. E. Dueker, G. D. O'Mullan, K. C. Weathers, A. R. Juhl, and M. Uriarte
Biogeosciences, 9, 803–813, https://doi.org/10.5194/bg-9-803-2012, https://doi.org/10.5194/bg-9-803-2012, 2012
L. Lassaletta, E. Romero, G. Billen, J. Garnier, H. García-Gómez, and J. V. Rovira
Biogeosciences, 9, 57–70, https://doi.org/10.5194/bg-9-57-2012, https://doi.org/10.5194/bg-9-57-2012, 2012
J. Yu, Y. Fu, Y. Li, G. Han, Y. Wang, D. Zhou, W. Sun, Y. Gao, and F. X. Meixner
Biogeosciences, 8, 2427–2435, https://doi.org/10.5194/bg-8-2427-2011, https://doi.org/10.5194/bg-8-2427-2011, 2011
E. S. Karlsson, A. Charkin, O. Dudarev, I. Semiletov, J. E. Vonk, L. Sánchez-García, A. Andersson, and Ö. Gustafsson
Biogeosciences, 8, 1865–1879, https://doi.org/10.5194/bg-8-1865-2011, https://doi.org/10.5194/bg-8-1865-2011, 2011
C. Y. Bernard, H. H. Dürr, C. Heinze, J. Segschneider, and E. Maier-Reimer
Biogeosciences, 8, 551–564, https://doi.org/10.5194/bg-8-551-2011, https://doi.org/10.5194/bg-8-551-2011, 2011
J. E. Vonk, L. Sánchez-García, I. Semiletov, O. Dudarev, T. Eglinton, A. Andersson, and Ö. Gustafsson
Biogeosciences, 7, 3153–3166, https://doi.org/10.5194/bg-7-3153-2010, https://doi.org/10.5194/bg-7-3153-2010, 2010
C. Y. Bernard, G. G. Laruelle, C. P. Slomp, and C. Heinze
Biogeosciences, 7, 441–453, https://doi.org/10.5194/bg-7-441-2010, https://doi.org/10.5194/bg-7-441-2010, 2010
Cited articles
Arnarson, T. and Keil, R.: Changes in organic matter-mineral interactions for
marine sediments with varying oxygen exposure times, Geochim. Cosmochim. Ac.,
71, 3545–3556, https://doi.org/10.1016/j.gca.2007.04.027, 2007.
Asouti, E. and Fuller, D.: Trees and Woodlands in South India:
Archaeological Perspectives, Left Coast Press, Walnut Creek, California,
2008.
Aufdenkampe, A. K., Mayorga, E., Raymond, P. A., Melack, J. M., Doney, S. C.,
Alin, S. R., Aalto, R. E., and Yoo, K.: Riverine coupling of biogeochemical
cycles between land, oceans, and atmosphere, Front. Ecol. Environ., 9, 53–60,
https://doi.org/10.1890/100014, 2011.
Balakrishna, K. and Probst, J.: Organic carbon transport and C ∕ N ratio
variations in a large tropical river: Godavari as a case study, India,
Biogeochemistry, 73, 457–473, https://doi.org/10.1007/s10533-004-0879-2, 2005.
Bao, R., McIntyre, C., Zhao, M., Zhu, C., Kao, S.-J., and Eglinton, T.:
Widespread dispersal and aging of organic carbon in shallow marginal seas, Geology, 44, 791–794, https://doi.org/10.1130/G37948.1, 2016.
Bendle, J. A., Weijers, J. W. H., Maslin, M. A., Sinninghe-Damsté, J. S.,
Schouten, S., Hopmans, E. C., Boot, C. S., and Pancost, R. D.: Major changes in
glacial and Holocene terrestrial temperatures and sources of organic carbon
recorded in the Amazon fan by tetraether lipids, Geochem. Geophy. Geosy., 11, Q12007, https://doi.org/10.1029/2010GC003308, 2010.
Bergmann, J. and Kleeberg, R.: Rietveld analysis of disordered layer
silicates, Material Science Forum, 278–281, 300–305, https://doi.org/10.4028/www.scientific.net/MSF.278-281.300, 1998.
Berner, R.: Burial of organic carbon and pyrite sulfur in the modern ocean:
its geochemical and environmental significance, Am. J. Sci., 282, 451–473,
https://doi.org/10.2475/ajs.282.4.451, 1989.
Berner, R.: The long-term carbon cycle, fossil fuels and atmospheric
composition, Nature, 426, 323–326, https://doi.org/10.1038/nature02131, 2003.
Bhattacharyya, T., Pal, D. K., Mandal, C., Chandran, P., Ray, S. K., Sarkar,
D., Velmourougane, K., Srivastava, R., Tiwary, P., Nagar, A. P., and
Nimkhedkar, S. S.: Soils of India: historical perspective, classification and
recent advances, Curr. Sci., 104, 1308–1323, 2013.
Biksham, G. and Subramanian, V.: Sediment transport of the Godavari River
Basin and its controlling factors, J. Hydrol., 101, 275–290, https://doi.org/10.1016/0022-1694(88)90040-6, 1988.
Bish, D. and Plötze, M.: X-ray powder diffraction with emphasis on
qualitative and quantitative analysis in industrial mineralogy, in: Advances in the characterization of industrial
minerals, edited by: Christidis, G., EMU and Mineralogical Society, London, 36–76, 2011.
Blair, N. and Aller, R.: The Fate of Terrestrial Organic Carbon in the
Marine Environment, Ann. Rev. Mar. Sci., 4, 401–423, https://doi.org/10.1146/annurev-marine-120709-142717, 2012.
Cole, J. J., Prairie, Y. T., Caraco, N. F., McDowell, W. H., Tranvik, L. J.,
Striegel, R. G., Duarte, C. M., Kortelainen, P., Downing, J. A., Middleburg,
J. J., and Melack, J.: Plumbing the global carbon cycle: Integrating inland
waters into the terrestrial carbon budget, Ecosystems, 10, 171–184, https://doi.org/10.1007/s10021-006-9013-8, 2007.
Coleman, J.: Brahmaputra River: Channel processes and sedimentation, Sediment. Geol., 3, 129–139, https://doi.org/10.1016/0037-0738(69)90010-4, 1969.
Collett, T., Boswell, R., Cochran, J., Kumar, P., Lall, M., Mazumdar, A.,
Raman, M., Ramprasad, T., Riedel, M., Sain, K., Sathe, A., Vishwanath, K., and Party, N. E.: Geologic implications of gas hydrates in the offshore of
India: Results of the National Gas Hydrate Program Expedition 01, Mar. Pet. Geol, 58, 3–28, https://doi.org/10.1016/j.marpetgeo.2014.07.021, 2014.
Craig, H.: The geochemistry of the stable carbon isotopes, Geochim. Cosmochim. Ac., 3, 53–92, https://doi.org/10.1016/0016-7037(53)90001-5, 1953.
Cui, M., Wang, Z., Nageswara Rao, K., Sangode, S. J., Saito, Y., Chen, T.,
Kulkarni, Y. R., Naga Kumar, K. C. V., and Demudu, G.: A mid- to late-Holocene
record of vegetation decline and erosion triggered by monsoon weakening and
human adaptations in the south-east Indian Peninsula, The Holocene, 27,
1976–1987, https://doi.org/10.1177/0959683617715694, 2017.
Degens, E., Kempe, S., and Richey, J.: Summary: biogeochemistry of major
world rivers, in: Biogeochemistry of major world rivers, edited by: Degens, E., Kempe, S., and Richey, J., Wiley, Chichester, 323–348, 1991.
Ertel, J. and Hedges, J.: Sources of sedimentary humic substances: vascular
plant debris, Geochim. Cosmochim. Ac, 49, 2097–2107, https://doi.org/10.1016/0016-7037(85)90067-5, 1985.
Freymond, C. V., Kündig, N., Stark, C., Peterse, F., Buggle, B., Lupker,
M., Plötze, M., Blattmann, T. M., Filip, F., Giosan, L., and Eglinton, T.:
Evolution of biomolecular loadings along a major river system, Geochim. Cosmochim. Ac., 223, 389–404, https://doi.org/10.1016/j.gca.2017.12.010, 2018.
Gadgil, S.: The Indian monsoon and its variability, Ann. Rev. Earth Planet. Sci., 31, 429–467, https://doi.org/10.1146/annurev.earth.31.100901.141251, 2003.
Galy, V. and Eglinton, T.: Protracted storage of biospheric carbon in the
Ganges-Brahmaputra basin, Nat. Geosci., 4, 843–847, https://doi.org/10.1038/ngeo1293,
2011.
Galy, V., France-Lanord, C., and Lartiges, B.: Loading and fate of
particulate organic carbon from the Himalaya to the Ganga–Brahmaputra
delta, Geochim. Cosmochim. Ac., 72, 1767–1787, https://doi.org/10.1016/j.gca.2008.01.027, 2008.
Giosan, L., Ponton, C., Usman, M., Blusztajn, J., Fuller, D. Q., Galy, V.,
Haghipour, N., Johnson, J. E., McIntyre, C., Wacker, L., and Eglinton, T. I.:
Short communication: Massive erosion in monsoonal central India linked to
late Holocene land cover degradation, Earth Surf. Dynam., 5, 781–789,
https://doi.org/10.5194/esurf-5-781-2017, 2017.
Goni, M., Yunker, M., Macdonald, R., and Eglinton, T.: The supply and
preservation of ancient and modern components of organic carbon in the
Canadian Beaufort Shelf of the Arctic Ocean, Mar. Chem., 93, 53–73, https://doi.org/10.1016/j.marchem.2004.08.001, 2005.
Gordon, E. and Goni, M.: Controls on the distribution and accumulation of
terrigenous organic matter in sediments from the Mississippi and Atchafalaya
river margin, Mar. Chem., 92, 331–352, https://doi.org/10.1016/j.marchem.2004.06.035,
2004.
Gunnell, Y., Anupama, K., and Sultan, B.: Response of the South Indian
runoff-harvesting civilization to northeast monsoon rainfall variability
during the last 2000 years: instrumental records and indirect evidence, The Holocene, 17, 207–215, https://doi.org/10.1177/0959683607075835, 2007.
Gupta, L., Subramanian, V., and Ittekkot, V.: Biogeochemistry of particulate
organic matter transported by the Godavari River, India, Biogeochemistry, 38,
103–128, https://doi.org/10.1023/A:1005732519216, 1997.
Hedges, J.: Global biogeochemical cycles: progress and problems, Mar. Chem., 39, 67–93, https://doi.org/10.1016/0304-4203(92)90096-S, 1992.
Hedges, J., Clark, W., Quay, P., Richey, J., Devol, A., and Santos, U.:
Composition and fluxes of particulate organic material in the Amazon river, Limnol. Oceanogr., 31, 717–738, https://doi.org/10.4319/lo.1986.31.4.0717, 1986.
Hilton, R., Galy, A., Hovius, N., Chen, M.-C., Horng, M.-J., and Chen, H.:
Tropical-cyclone-driven erosion of the terrestrial biosphere from mountains, Nat. Geosci., 1, 759–762, https://doi.org/10.1038/ngeo333, 2008.
Hobert, L. and Wetzel, A.: On the relationship between silica and carbonate
diagenesis in dep-sea sediments, Int. J. Earth Sci., 78, 765–778, https://doi.org/10.1007/BF01829321,
1989.
Kale, V.: Fluvial geomorphology of Indian rivers: an overview, Prog. Phys. Geogr., 26, 400–433, https://doi.org/10.1191/0309133302pp343ra, 2002.
Keil, R., Mayer, L., Quay, P., Richey, J., and Hedges, J.: Loss of organic
matter from riverine particles in deltas, Geochim. Cosmochim. Ac., 61, 1507–1511, https://doi.org/10.1016/S0016-7037(97)00044-6, 1997.
Kessarkar, P. M., Rao, V. P., Ahmad, S. M., and Babu, G. A.: Clay minerals and
Sr-Nd isotopes of the sediments along the western margin of India and their
implication for sediment provenance, Mar. Geol., 202, 55–69, https://doi.org/10.1016/S0025-3227(03)00240-8, 2003.
Komada, T., Anderson, M., and Dorfmeier, C.: Carbonate removal from coastal
sediments for the determination of organic carbon and its isotopic
signatures, δ13C and Δ14C: comparison of fumigation and
direct acidification by hydrochloric acid, Limnol. Oceanogr.-Meth., 6,
254–262, https://doi.org/10.4319/lom.2008.6.254, 2008.
Kulkarni, Y. R., Sangode, S. J., Blomendal, J., Meshram, D. C., and Suresh, N.:
Mineral Magnetic Characterization of the Godavari River and Western Bay of
Bengal: Implications to Source to Sink Relations, J. Geol. Soc. India, 85,
71–78, 2015.
Leithold, E., Blair, N., and Perkey, D.: Geomorphologic controls on the age
of particulate organic carbon from small mountainous and upland rivers, Global Biogeochem. Cy., 20, GB3022, https://doi.org/10.1029/2005GB002677, 2006.
Ludwig, W., Probst, J., and Kempe, S.: Predicting the oceanic input of
organic carbon by continental erosion, Global Biogeochem. Cy., 10, 23–41,
https://doi.org/10.1029/95GB02925, 1996.
Manmohan, M., Rao, M., Kamaraju, A., and Yalamarty, S.: Origin and occurence
of Lower Cretaceous high gamma-high resistivity shale- a key stratigraphic
sequence for hydrocarbon exploration in the Krishna-Godavari basin, A.P., J.
Geol. Soc. India, 62, 271–289, 2003.
Marin-Spiotta, E., Gruley, K. E., Crawford, J., Atkinson, E. E., Miesel, J. R.,
Greene, S., Crardona-Correa, C., and Spencer, R.: Paradigm shifts in soil
organic matter research affect interpretations of aquatic carbon cycling:
transcending disciplinary and ecosystem boundaries, Biogeochemistry, 117,
279–297, https://doi.org/10.1007/s10533-013-9949-7, 2014.
Marwick, T., Tamooh, F., Teodoru, C., Borges, V., Darchambeau, F., and
Bouillon, S.: The age of river-transported carbon: A global perspective, Global Biogeochem. Cy., 29, 122–137, https://doi.org/10.1002/2014GB004911, 2015.
Mayer, L.: Relationships between mineral surfaces and organic carbon
concentrations in soils and sediments, Chem. Geol., 114, 347–363, https://doi.org/10.1016/0009-2541(94)90063-9, 1994a.
Mayer, L.: Surface area control of organic carbon accumulation in
continental shelf sediments, Geochim. Cosmochim. Ac., 58, 1271–1284, https://doi.org/10.1016/0016-7037(94)90381-6, 1994b.
McIntyre, C., Wacker, L., Haghipour, N., Blattmann, T., Fahrni, S., Usman,
M., Eglinton, T., and Synal, H.: Online 13C and 14C gas measurement by
EA-IRMS-AMS at ETH Zuürich, Radiocarbon, 59, 893–903, https://doi.org/10.1017/RDC.2016.68, 2016.
Meybeck, M.: Carbon, nitrogen, and phosphorus transport by world rivers, Am. J. Sci., 282, 401–450, https://doi.org/10.2475/ajs.282.4.401, 1982.
Murthy, K., Subramanam, A., Lakshminarayana, S., Chandrasekhar, D., and Rao,
T.: Some geodynamics aspect of the Krishna-Godavari basin, east coast of
India, Cont. Shelf Res., 15, 779–788, https://doi.org/10.1016/0278-4343(94)00044-N,
1995.
Pessenda, L., Gouveia, S., Aravena, R., Gomes, B., Boulet, R., and Ribeiro,
S.: 14C Dating and stable carbon isotopes of soil organic matter in
forst-savanna boundary areas in the southern Brazilian Amazon region, Radiocarbon, 40, 1013–1022, https://doi.org/10.1017/S0033822200018981, 1997.
Philips, S. C., Johnson, J., Underwood, M. B., Guo, J., Giosan, L., and Rose,
K.: Long-timescale variation in bulk and clay mineral composition of Indian
continental margin sediment in the Bay of Bengal, Arabian Sea, and Andaman Sea, Mar. Pet. Geol., 58, 117–138, https://doi.org/10.1016/j.marpetgeo.2014.06.018,
2014.
Ponton, C., Giosan, L., Eglinton, T., Fuller, D., Johnson, J., Kumar, P., and
Collett, T.: Holocene aridification of India, Geophys. Res. Lett., 39,
L03704, https://doi.org/10.1029/2011GL050722, 2012.
Pradhan, U., Wu, Y., Shirodkar, P., Zhang, J., and Zhang, G.: Multi-proxy
evidence for compositional change of organic matter in the largest tropical
(peninsular) river basin of India, J. Hydrol., 519, 999–10009, https://doi.org/10.1016/j.jhydrol.2014.08.018, 2014.
Prasad, S., Anoop, A., Riedel, N., Srakar, S., Menzel, P., Basavaiah, N.,
Krishnan, R., Fuller, D., Plessen, B., Gaye, B., Röhl, U., Wilkes, H.,
Sachse, D., Sawant, R., Wiesner, M., and Stebich, M.: Prolonged monsoon
droughts and links to Indo-Pacific warm pool: A Holocene record from Lonar
Lake, central India, Earth Planet. Sci. Lett., 391, 171–182, https://doi.org/10.1016/j.epsl.2014.01.043, 2014.
Rao, K., Sadakata, N., Malini, B., and Takayasu, K.: Sedimentation processes
and asymmetric development of the Godavari delta, Sepm. Spec. P., 89, 433–449, https://doi.org/10.2110/pec.05.83.0435, 2005.
Sarin, M., Borole, D., and Krishnaswami, S.: Geochemistry and geochronology
of sediments from the Bay of Bengal and the equatorial Indian Ocean, P. Natl. Acad. Sci. USA, 88, 131–154, 1979.
Schefuss, E., Kuhlmann, H., Mollenhauer, G., Prange, M., and Pätzold, J.:
Forcing of wet phases in southeast Africa over the past 17,000 years, Nature, 480, 509–512, https://doi.org/10.1038/nature10685, 2011.
Schefuss, E., Eglinton, T., Spencer-Jones, C., Rullkötter, J., De
Pol-Hols, R., Talbot, H., Grootes, P., and Schneider, R.: Hydrologic control
of carbon cycling and aged carbon discharge in the Congo River basin, Nat. Geosci., 9, 687–690, https://doi.org/10.1038/ngeo2778, 2016.
Schlünz, B. and Schneider, R.: Transport of terrestrial organic carbon
to the oceans by rivers: re-estimating flux-and burial rates, Int. J. Earth Sci., 88, 599–606, https://doi.org/10.1007/s005310050290, 2000.
Shen, C., Yi, W., Sun, Y., Xing, C., Yang, Y., Yuan, C., Li, Z., Peng, S.,
An, Z., and Liu, T.: Distribution of 14C and 13C in forest soils of the
Dinghushan biosphere reserve, Radiocarbon, 43, 671-678, https://doi.org/10.1017/S0033822200041321, 2001.
Shrivastava, J. P. and Pattanayak, S. K.: Basalts of the Eastern Deccan
Volcanic Province, India, Gondwana Res., 5, 649–665, https://doi.org/10.1016/S1342-937X(05)70636-5, 2002.
Silviera, D.: India Book, Classic Publishers, Goa, India, 1993.
Sinha, A., Stott, L., Berkelhammer, M., Cheng, H., Edwards, R. L., Buckley,
B., Aldenderfer, M., and Mudelsee, M.: A global context for megadroughts in
monsoon Asia during the past millenium, Quaternary Sci. Rev.,30, 47–62, https://doi.org/10.1016/j.quascirev.2010.10.005, 2011.
Spencer, R., Hernes, P., Aufdenkampe, A., Baker, A., Gulliver, P., Stubbins,
A., Aiken, G., Dyda, R., Butler, K., Mwamba, V., Mangangu, A., and
Wabakanghanzi, S.: An initial investigation into the organic matter
biogeochemistry of the Congo River, Geochim. Cosmochim. Ac., 84, 614–627,
https://doi.org/10.1016/j.gca.2012.01.013, 2012.
Sridhar, P. N., Ali, M. M., Vethamony, P., Babu, M. T., Ramana, I. V.,
and Jayakumar, S.: Seasonal Occurrence of Unique Sediment Plume in the Bay
of Bengal, Eos Trans. AGU, 89, 22–23, https://doi.org/10.1029/2008EO030002, 2008.
Srivastava, P., Parkash, B., and Pal, D. K.: Clay Minerals in Soils as
Evidence of Holocene Climatic Change, Central Indo-Gangetic Plains,
North-Central India, Quatern. Res., 50, 230–239, https://doi.org/10.1006/qres.1998.1994,
1998.
Stuiver, M. and Polach, H.: Reporting of C-14 data – Discussion, Radiocarbon, 19, 355–363, https://doi.org/10.1017/S0033822200003672, 1977.
Subramanian, V.: Geomorphology of the Deccan volcanic province, in: Deccan Volcanism and Related Basalt Provinces in Other Parts of the
World, edited by: Rao, S., Hindustan Publisher, New Delhi, India, p. 467, 1981.
Syvitski, J. P. M., Vörösmarty, C. J., Kettner, A. J., and Green, P.:
Impacts of humans on the flux of terrestrial sediment to the global coastal ocean, Science, 308, 376–380, https://doi.org/10.1126/science.1109454, 2005.
Tao, S., Eglinton, T., Montlucon, D., McIntyre, C., and Zhang, M.: Pre-aged soil organic carbon as a major component of the Yellow River
suspended load: Regional significance and global relevance, Earth Planet. Sci. Lett., 414, 77–86, https://doi.org/10.1016/j.epsl.2015.01.004, 2015.
Tripathy, G., Singh, S., Bhushan, R., and Ramaswamy, V.: Sr-Nd isotope
composition of the Bay of Bengal Sediments: Impact of Climate on Erosion in
the Himalaya, Geochem. J., 45, 175–186, https://doi.org/10.2343/geochemj.1.0112, 2011.
Trumbore, S., Vogel, J., and Southon, J.: AMS 14C measurements of
fractionated soil organic matter: an approach to deciphering the soil carbon
cycle, Radiocarbon, 31, 644–654, https://doi.org/10.1017/S0033822200012248, 1989.
van der Voort, T. S., Zell, C. I., Hagedorn, F., Feng, X., McIntyre, C. P.,
Haghipour, N., Graf Pannatier, E., and Eglinton, T. I.: Diverse Soil Carbon
Dynamics Expressed at the Molecular Level, Geophys. Res. Lett., 44,
11,840–850, https://doi.org/10.1002/2017GL076188, 2017.
Van Oost, K., Verstraeten, G., Doetterl, S., Notebaert, B., Wiaux, F.,
Broothaerts, N., and Six, J.: Legacy of human-induced C erosion and burial on
soil–atmosphere C exchange, P. Natl. Acad. Sci. USA, 109, 19492–19497,
https://doi.org/10.1073/pnas.1211162109, 2012.
Wacker, L., Bonani, G., Friedrich, M., Hajdas, I., Kromer, B., Němec,
M., Ruff, M., Synal, H.-A., and Vockenhuber, C.: MICADAS: Routine and
High-Precision Radiocarbon Dating, Radiocarbon, 52, 252–262, https://doi.org/10.1017/S0033822200045288, 2010.
Wakeham, S., Canuel, E., Lerberg, E., Mason, P., Sampere, T., and Bianchi,
T.: Partitioning of organic matter in continental margin sediments among
density fractions, Mar. Chem., 115, 211–225, https://doi.org/10.1016/j.marchem.2009.08.005, 2009.
Wang, X., Cammeraat, E., Cerli, C., and Kalbitz, K.: Soil aggregation and the
stabilization of organic carbon as affected by ersosion and deposition, Soil Biol. Biochem., 72, 55–65, https://doi.org/10.1016/j.soilbio.2014.01.018, 2014.
Webster, P. J., Magana, V. O., Palmer, T. N., Shukla, J., Tomas, R. A., Yanai,
M., and Yasunari, T.: Monsoon: processes, predictability, and the prospects for
prediction, J. Geophys. Res., 103, 14451–14510, https://doi.org/10.1029/97JC02719, 1998.
Weijers, J. W. H., Schefuss, E., Schouten, S., and Sinninghe-Damsté, J. S.:
Coupled thermal and hydrological evolution of tropical Africa over the last
deglaciation, Science, 315, 1701–1704, https://doi.org/10.1126/science.1138131, 2007.
Wu, Y., Dittmar, T., Ludwichowski, K., Kattner, G., Zhang, J., Zhu, Z., and
Kock, B.: Tracing suspended organic nitrogen from the Yangtze River
catchment inot the East China Sea, Mar. Chem., 107, 367–377, https://doi.org/10.1016/j.marchem.2007.01.022, 2007.
Zhang, G., Germaine, J., Martin, R., and Whittle, J.: A simple
sample-mounting method for random powder X-ray diffraction, Clay Clay Miner., 51, 218–225, https://doi.org/10.1346/CCMN.2003.0510212, 2003.
Zorzi, C., Goni, M., Anupama, K., Prasad, S., Hanquiez, V., Johnson, J., and
Giosan, L.: Indian monsoon variations during three contrasting climatic
periods: The Holocene, Heinrich Stadial 2 and the last interglacial-glacial
transition, Quaternary Sci. Rev., 125, 50–60, https://doi.org/10.1016/j.quascirev.2015.06.009, 2015.
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