Articles | Volume 8, issue 5
https://doi.org/10.5194/bg-8-1351-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-8-1351-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
27 May 2011
Research article |
| 27 May 2011
Modeling biogeochemical processes in sediments from the Rhône River prodelta area (NW Mediterranean Sea)
L. Pastor
Univ. Paris Diderot, Sorbonne Paris Cité, Institut de Physique du Globe de Paris, UMR7154 CNRS, 75013 Paris, France
C. Cathalot
Lab. des Sciences du Climat et de l'Environ., CEA-CNRS UMR 1572, Av. de la Terrasse, 91198 Gif sur Yvette, France
B. Deflandre
Univ. Paris Diderot, Sorbonne Paris Cité, Institut de Physique du Globe de Paris, UMR7154 CNRS, 75013 Paris, France
UMR5805 EPOC – OASU, Université Bordeaux 1 – CNRS, Avenue des Facultés, 33405 Talence cedex, France
E. Viollier
Univ. Paris Diderot, Sorbonne Paris Cité, Institut de Physique du Globe de Paris, UMR7154 CNRS, 75013 Paris, France
K. Soetaert
NIOO-KNAW, Centre for Estuarine and Marine Ecology, Korringaweg 7, 4401 NT Yerseke, The Netherlands
F. J. R. Meysman
NIOO-KNAW, Centre for Estuarine and Marine Ecology, Korringaweg 7, 4401 NT Yerseke, The Netherlands
C. Ulses
Laboratoire d'Aérologie, CNRS et Université de Toulouse, 14 avenue Edouard Belin, 31400 Toulouse, France
E. Metzger
Laboratoire des Bio-Indicateurs Actuels et Fossiles, UPRES EA 2644, UFR Sciences 2 bd Lavoisier, 49045 Angers Cedex 01, France
C. Rabouille
Lab. des Sciences du Climat et de l'Environ., CEA-CNRS UMR 1572, Av. de la Terrasse, 91198 Gif sur Yvette, France
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Kyle Delwiche, Junyao Gu, Harold Hemond, and Sarah P. Preheim
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Nathaniel Kemnitz, William M. Berelson, Douglas E. Hammond, Laura Morine, Maria Figueroa, Timothy W. Lyons, Simon Scharf, Nick Rollins, Elizabeth Petsios, Sydnie Lemieux, and Tina Treude
Biogeosciences, 17, 2381–2396, https://doi.org/10.5194/bg-17-2381-2020, https://doi.org/10.5194/bg-17-2381-2020, 2020
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Our paper shows how sedimentation in a very low oxygen setting provides a unique record of environmental change. We look at the past 250 years through the filter of sediment accumulation via radioisotope dating and other physical and chemical analyses of these sediments. We conclude, remarkably, that there has been very little change in net sediment mass accumulation through the past 100–150 years, yet just prior to 1900 CE, sediments were accumulating at 50 %–70 % of today's rate.
Dario Fussmann, Avril Jean Elisabeth von Hoyningen-Huene, Andreas Reimer, Dominik Schneider, Hana Babková, Robert Peticzka, Andreas Maier, Gernot Arp, Rolf Daniel, and Patrick Meister
Biogeosciences, 17, 2085–2106, https://doi.org/10.5194/bg-17-2085-2020, https://doi.org/10.5194/bg-17-2085-2020, 2020
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Dolomite (CaMg(CO3)2) is supersaturated in many aquatic settings (e.g., seawater) on modern Earth but does not precipitate directly from the fluid, a fact known as the dolomite problem. The widely acknowledged concept of dolomite precipitation involves microbial extracellular polymeric substances (EPSs) and anoxic conditions as important drivers. In contrast, results from Lake Neusiedl support an alternative concept of Ca–Mg carbonate precipitation under aerobic and alkaline conditions.
Aurèle Vuillemin, André Friese, Richard Wirth, Jan A. Schuessler, Anja M. Schleicher, Helga Kemnitz, Andreas Lücke, Kohen W. Bauer, Sulung Nomosatryo, Friedhelm von Blanckenburg, Rachel Simister, Luis G. Ordoñez, Daniel Ariztegui, Cynthia Henny, James M. Russell, Satria Bijaksana, Hendrik Vogel, Sean A. Crowe, Jens Kallmeyer, and the Towuti Drilling Project
Science team
Biogeosciences, 17, 1955–1973, https://doi.org/10.5194/bg-17-1955-2020, https://doi.org/10.5194/bg-17-1955-2020, 2020
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Ferruginous lakes experience restricted primary production due to phosphorus trapping by ferric iron oxides under oxic conditions. We report the presence of large crystals of vivianite, a ferrous iron phosphate, in sediments from Lake Towuti, Indonesia. We address processes of P retention linked to diagenesis of iron phases. Vivianite crystals had light Fe2+ isotope signatures and contained mineral inclusions consistent with antecedent processes of microbial sulfate and iron reduction.
Sonja Geilert, Patricia Grasse, Kristin Doering, Klaus Wallmann, Claudia Ehlert, Florian Scholz, Martin Frank, Mark Schmidt, and Christian Hensen
Biogeosciences, 17, 1745–1763, https://doi.org/10.5194/bg-17-1745-2020, https://doi.org/10.5194/bg-17-1745-2020, 2020
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Marine silicate weathering is a key process of the marine silica cycle; however, its controlling processes are not well understood. In the Guaymas Basin, silicate weathering has been studied under markedly differing ambient conditions. Environmental settings like redox conditions or terrigenous input of reactive silicates appear to be major factors controlling marine silicate weathering. These factors need to be taken into account in future oceanic mass balances of Si and in modeling studies.
Jessica B. Volz, Laura Haffert, Matthias Haeckel, Andrea Koschinsky, and Sabine Kasten
Biogeosciences, 17, 1113–1131, https://doi.org/10.5194/bg-17-1113-2020, https://doi.org/10.5194/bg-17-1113-2020, 2020
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Potential future deep-sea mining of polymetallic nodules at the seafloor is expected to severely harm the marine environment. However, the consequences on deep-sea ecosystems are still poorly understood. This study on surface sediments from man-made disturbance tracks in the Pacific Ocean shows that due to the removal of the uppermost sediment layer and thereby the loss of organic matter, the geochemical system in the sediments is disturbed for millennia before reaching a new equilibrium.
Ralf Conrad, Melanie Klose, and Alex Enrich-Prast
Biogeosciences, 17, 1063–1069, https://doi.org/10.5194/bg-17-1063-2020, https://doi.org/10.5194/bg-17-1063-2020, 2020
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Lake sediments release the greenhouse gas CH4. Acetate is an important precursor. Although Amazonian lake sediments all contained acetate-consuming methanogens, measurement of the turnover of labeled acetate showed that some sediments converted acetate not to CH4 plus CO2, as expected, but only to CO2. Our results indicate the operation of acetate-oxidizing microorganisms couples the oxidation process to syntrophic methanogenic partners and/or to the reduction of organic compounds.
Jens Rassmann, Eryn M. Eitel, Bruno Lansard, Cécile Cathalot, Christophe Brandily, Martial Taillefert, and Christophe Rabouille
Biogeosciences, 17, 13–33, https://doi.org/10.5194/bg-17-13-2020, https://doi.org/10.5194/bg-17-13-2020, 2020
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In this paper, we use a large set of measurements made using in situ and lab techniques to elucidate the cause of dissolved inorganic carbon fluxes in sediments from the Rhône delta and its companion compound alkalinity, which carries the absorption capacity of coastal waters with respect to atmospheric CO2. We show that sediment processes (sulfate reduction, FeS precipitation and accumulation) are crucial in generating the alkalinity fluxes observed in this study by in situ incubation chambers.
Sophie A. L. Paul, Matthias Haeckel, Michael Bau, Rajina Bajracharya, and Andrea Koschinsky
Biogeosciences, 16, 4829–4849, https://doi.org/10.5194/bg-16-4829-2019, https://doi.org/10.5194/bg-16-4829-2019, 2019
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We studied the upper 10 m of deep-sea sediments, including pore water, in the Peru Basin to understand small-scale variability of trace metals. Our results show high spatial variability related to topographical variations, which in turn impact organic matter contents, degradation processes, and trace metal cycling. Another interesting finding was the influence of dissolving buried nodules on the surrounding sediment and trace metal cycling.
Sarah Paradis, Antonio Pusceddu, Pere Masqué, Pere Puig, Davide Moccia, Tommaso Russo, and Claudio Lo Iacono
Biogeosciences, 16, 4307–4320, https://doi.org/10.5194/bg-16-4307-2019, https://doi.org/10.5194/bg-16-4307-2019, 2019
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Chronic deep bottom trawling in the Gulf of Castellammare (SW Mediterranean) erodes large volumes of sediment, exposing over-century-old sediment depleted in organic matter. Nevertheless, the arrival of fresh and nutritious sediment recovers superficial organic matter in trawling grounds and leads to high turnover rates, partially and temporarily mitigating the impacts of bottom trawling. However, this deposition is ephemeral and it will be swiftly eroded by the passage of the next trawler.
Zhichao Zhou, Bo Liang, Li-Ying Wang, Jin-Feng Liu, Bo-Zhong Mu, Hojae Shim, and Ji-Dong Gu
Biogeosciences, 16, 4229–4241, https://doi.org/10.5194/bg-16-4229-2019, https://doi.org/10.5194/bg-16-4229-2019, 2019
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This study shows a core bacterial microbiome with a small proportion of shared operational taxonomic units of common sequences among all oil reservoirs. Dominant methanogenesis shifts from the hydrogenotrophic pathway in water phase to the acetoclastic pathway in the oil phase at high temperatures, but the opposite is true at low temperatures. There are also major functional metabolism differences between the two phases for amino acids, hydrocarbons, and carbohydrates.
Annika Fiskal, Longhui Deng, Anja Michel, Philip Eickenbusch, Xingguo Han, Lorenzo Lagostina, Rong Zhu, Michael Sander, Martin H. Schroth, Stefano M. Bernasconi, Nathalie Dubois, and Mark A. Lever
Biogeosciences, 16, 3725–3746, https://doi.org/10.5194/bg-16-3725-2019, https://doi.org/10.5194/bg-16-3725-2019, 2019
Hanni Vigderovich, Lewen Liang, Barak Herut, Fengping Wang, Eyal Wurgaft, Maxim Rubin-Blum, and Orit Sivan
Biogeosciences, 16, 3165–3181, https://doi.org/10.5194/bg-16-3165-2019, https://doi.org/10.5194/bg-16-3165-2019, 2019
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Microbial iron reduction participates in important biogeochemical cycles. In the last decade iron reduction has been observed in many aquatic sediments below its classical zone, in the methane production zone, suggesting a link between the two cycles. Here we present evidence for microbial iron reduction in the methanogenic depth of the oligotrophic SE Mediterranean continental shelf using mainly geochemical and microbial sedimentary profiles and suggest possible mechanisms for this process.
Haoyi Yao, Wei-Li Hong, Giuliana Panieri, Simone Sauer, Marta E. Torres, Moritz F. Lehmann, Friederike Gründger, and Helge Niemann
Biogeosciences, 16, 2221–2232, https://doi.org/10.5194/bg-16-2221-2019, https://doi.org/10.5194/bg-16-2221-2019, 2019
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How methane is transported in the sediment is important for the microbial community living on methane. Here we report an observation of a mini-fracture that facilitates the advective gas transport of methane in the sediment, compared to the diffusive fluid transport without a fracture. We found contrasting bio-geochemical signals in these different transport modes. This finding can help to fill the gap in the fracture network system in modulating methane dynamics in surface sediments.
Laura A. Casella, Sixin He, Erika Griesshaber, Lourdes Fernández-Díaz, Martina Greiner, Elizabeth M. Harper, Daniel J. Jackson, Andreas Ziegler, Vasileios Mavromatis, Martin Dietzel, Anton Eisenhauer, Sabino Veintemillas-Verdaguer, Uwe Brand, and Wolfgang W. Schmahl
Biogeosciences, 15, 7451–7484, https://doi.org/10.5194/bg-15-7451-2018, https://doi.org/10.5194/bg-15-7451-2018, 2018
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Biogenic carbonates record past environmental conditions. Fossil shell chemistry and microstructure change as metastable biogenic carbonates are replaced by inorganic calcite. Simulated diagenetic alteration at 175 °C of different shell microstructures showed that (nacreous) shell aragonite and calcite were partially replaced by coarse inorganic calcite crystals due to dissolution–reprecipitation reactions. EBSD maps allowed for qualitative assessment of the degree of diagenetic overprint.
Wytze K. Lenstra, Matthias Egger, Niels A. G. M. van Helmond, Emma Kritzberg, Daniel J. Conley, and Caroline P. Slomp
Biogeosciences, 15, 6979–6996, https://doi.org/10.5194/bg-15-6979-2018, https://doi.org/10.5194/bg-15-6979-2018, 2018
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We show that burial rates of phosphorus (P) in an estuary in the northern Baltic Sea are very high. We demonstrate that at high sedimentation rates, P retention in the sediment is related to the formation of vivianite. With a reactive transport model, we assess the sensitivity of sedimentary vivianite formation. We suggest that enrichments of iron and P in the sediment are linked to periods of enhanced riverine input of Fe, which subsequently strongly enhances P burial in coastal sediments.
Jiarui Liu, Gareth Izon, Jiasheng Wang, Gilad Antler, Zhou Wang, Jie Zhao, and Matthias Egger
Biogeosciences, 15, 6329–6348, https://doi.org/10.5194/bg-15-6329-2018, https://doi.org/10.5194/bg-15-6329-2018, 2018
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Our work provides new insights into the biogeochemical cycling of iron, methane and phosphorus. We found that vivianite, an iron-phosphate mineral, is pervasive in methane-rich sediments, suggesting that iron reduction at depth is coupled to phosphorus and methane cycling on a much greater spatial scale than previously assumed. Acting as an important burial mechanism for iron and phosphorus, vivianite authigenesis may be an under-considered process in both modern and ancient settings alike.
Marc A. Besseling, Ellen C. Hopmans, R. Christine Boschman, Jaap S. Sinninghe Damsté, and Laura Villanueva
Biogeosciences, 15, 4047–4064, https://doi.org/10.5194/bg-15-4047-2018, https://doi.org/10.5194/bg-15-4047-2018, 2018
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Benthic archaea comprise a significant part of the total prokaryotic biomass in marine sediments. Here, we compared the archaeal diversity and intact polar lipid (IPL) composition in both surface and subsurface sediments with different oxygen regimes in the Arabian Sea oxygen minimum zone. The oxygenated sediments were dominated by Thaumarchaeota and IPL-GDGT-0. The anoxic sediment contained highly diverse archaeal communities and high relative abundances of IPL-GDGT-1 to -4.
Georgina Robinson, Thomas MacTavish, Candida Savage, Gary S. Caldwell, Clifford L. W. Jones, Trevor Probyn, Bradley D. Eyre, and Selina M. Stead
Biogeosciences, 15, 1863–1878, https://doi.org/10.5194/bg-15-1863-2018, https://doi.org/10.5194/bg-15-1863-2018, 2018
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This study examined the effect of adding carbon to a sediment-based effluent treatment system to treat nitrogen-rich aquaculture waste. The research was conducted in incubation chambers to measure the exchange of gases and nutrients across the sediment–water interface and examine changes in the sediment microbial community. Adding carbon increased the amount of nitrogen retained in the treatment system, thereby reducing the levels of nitrogen needing to be discharged to the environment.
Daniele Brigolin, Christophe Rabouille, Bruno Bombled, Silvia Colla, Salvatrice Vizzini, Roberto Pastres, and Fabio Pranovi
Biogeosciences, 15, 1347–1366, https://doi.org/10.5194/bg-15-1347-2018, https://doi.org/10.5194/bg-15-1347-2018, 2018
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We present the result of a study carried out in the north-western Adriatic Sea by combining two different types of models with field sampling. A mussel farm was taken as a local source of perturbation to the natural flux of particulate organic carbon to the sediment. Differences in fluxes were primarily associated with mussel physiological conditions. Although restricted, these changes in particulate organic carbon fluxes induced visible effects on sediment biogeochemistry.
Volker Brüchert, Lisa Bröder, Joanna E. Sawicka, Tommaso Tesi, Samantha P. Joye, Xiaole Sun, Igor P. Semiletov, and Vladimir A. Samarkin
Biogeosciences, 15, 471–490, https://doi.org/10.5194/bg-15-471-2018, https://doi.org/10.5194/bg-15-471-2018, 2018
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We determined the aerobic and anaerobic degradation rates of land- and marine-derived organic material in East Siberian shelf sediment. Marine plankton-derived organic carbon was the main source for the oxic dissolved carbon dioxide production, whereas terrestrial organic material significantly contributed to the production of carbon dioxide under anoxic conditions. Our direct degradation rate measurements provide new constraints for the present-day Arctic marine carbon budget.
Jack J. Middelburg
Biogeosciences, 15, 413–427, https://doi.org/10.5194/bg-15-413-2018, https://doi.org/10.5194/bg-15-413-2018, 2018
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Organic carbon processing at the seafloor is studied by geologists to better understand the sedimentary record, by biogeochemists to quantify burial and respiration, by organic geochemists to elucidate compositional changes, and by ecologists to follow carbon transfers within food webs. These disciplinary approaches have their strengths and weaknesses. This award talk provides a synthesis, highlights the role of animals in sediment carbon processing and presents some new concepts.
Craig Smeaton, William E. N. Austin, Althea L. Davies, Agnes Baltzer, John A. Howe, and John M. Baxter
Biogeosciences, 14, 5663–5674, https://doi.org/10.5194/bg-14-5663-2017, https://doi.org/10.5194/bg-14-5663-2017, 2017
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Fjord sediments are recognised as hotspots for the burial and long-term storage of carbon. In this study, we use the Scottish fjords as a natural laboratory. Using geophysical and geochemical analysis in combination with upscaling techniques, we have generated the first full national sedimentary C inventory for a fjordic system. The results indicate that the Scottish fjords on a like-for-like basis are more effective as C stores than their terrestrial counterparts, including Scottish peatlands.
Perran Louis Miall Cook, Adam John Kessler, and Bradley David Eyre
Biogeosciences, 14, 4061–4069, https://doi.org/10.5194/bg-14-4061-2017, https://doi.org/10.5194/bg-14-4061-2017, 2017
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Nitrogen is the key nutrient that typically limits productivity in coastal waters. One of the key controls on the amount of bioavailable nitrogen is the process of denitrification, which converts nitrate (bioavailable) into nitrogen gas. Previous studies suggest high rates of denitrification may take place within carbonate sediments, and one explanation for this is that this process may take place within the sand grains. Here we show evidence to support this hypothesis.
Chris T. Parsons, Fereidoun Rezanezhad, David W. O'Connell, and Philippe Van Cappellen
Biogeosciences, 14, 3585–3602, https://doi.org/10.5194/bg-14-3585-2017, https://doi.org/10.5194/bg-14-3585-2017, 2017
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Phosphorus (P) has accumulated in sediments due to past human activities. The re-release of this P to water contributes to the growth of harmful algal blooms. Our research improves our mechanistic understanding of how P is partitioned between different chemical forms and between sediment and water under dynamic conditions. We demonstrate that P trapped within iron minerals may be less mobile during anoxic conditions than previously thought due to reversible changes to P forms within sediment.
Clint M. Miller, Gerald R. Dickens, Martin Jakobsson, Carina Johansson, Andrey Koshurnikov, Matt O'Regan, Francesco Muschitiello, Christian Stranne, and Carl-Magnus Mörth
Biogeosciences, 14, 2929–2953, https://doi.org/10.5194/bg-14-2929-2017, https://doi.org/10.5194/bg-14-2929-2017, 2017
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Continental slopes north of the East Siberian Sea are assumed to hold large amounts of methane. We present pore water chemistry from the 2014 SWERUS-C3 expedition. These are among the first results generated from this vast climatically sensitive region, and they imply that abundant methane, including gas hydrates, do not characterize the East Siberian Sea slope or rise. This contradicts previous modeling and discussions, which due to the lack of data are almost entirely based assumption.
Laura A. Casella, Erika Griesshaber, Xiaofei Yin, Andreas Ziegler, Vasileios Mavromatis, Dirk Müller, Ann-Christine Ritter, Dorothee Hippler, Elizabeth M. Harper, Martin Dietzel, Adrian Immenhauser, Bernd R. Schöne, Lucia Angiolini, and Wolfgang W. Schmahl
Biogeosciences, 14, 1461–1492, https://doi.org/10.5194/bg-14-1461-2017, https://doi.org/10.5194/bg-14-1461-2017, 2017
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Mollusc shells record past environments. Fossil shell chemistry and microstructure change as metastable biogenic aragonite transforms to stable geogenic calcite. We simulated this alteration of Arctica islandica shells by hydrothermal treatments. Below 175 °C the shell aragonite survived for weeks. At 175 °C the replacement of the original material starts after 4 days and yields submillimetre-sized calcites preserving the macroscopic morphology as well as the original internal micromorphology.
Jung-Ho Hyun, Sung-Han Kim, Jin-Sook Mok, Hyeyoun Cho, Tongsup Lee, Verona Vandieken, and Bo Thamdrup
Biogeosciences, 14, 941–958, https://doi.org/10.5194/bg-14-941-2017, https://doi.org/10.5194/bg-14-941-2017, 2017
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The surface sediments of the Ulleung Basin (UB) in the East Sea are characterized by high organic carbon contents (> 2.5 %, dry wt.) and very high concentrations of Mn oxides (> 200 μmol cm−3) and Fe oxides (up to 100 μmol cm−3). For the first time in deep offshore sediments on the Asian margin with water depth over 2000 m, we report that Mn reduction and Fe reduction were the dominant organic carbon (Corg) oxidation pathways, comprising 45 % and 20 % of total Corg oxidation, respectively.
Jens Rassmann, Bruno Lansard, Lara Pozzato, and Christophe Rabouille
Biogeosciences, 13, 5379–5394, https://doi.org/10.5194/bg-13-5379-2016, https://doi.org/10.5194/bg-13-5379-2016, 2016
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In situ O2 and pH measurements as well as determination of porewater concentrations of dissolved inorganic carbon, total alkalinity, sulfate and calcium have been measured in the sediments of the Rhône prodelta. Biogeochemical activity decreased with distance from the river mouth. Oxic processes decreased the carbonate saturation state (Ω) by lowering pH, whereas anaerobic organic matter degradation, dominated by sulfate reduction, was accompanied by increasing Ω and carbonate precipitation.
Matthias Egger, Peter Kraal, Tom Jilbert, Fatimah Sulu-Gambari, Célia J. Sapart, Thomas Röckmann, and Caroline P. Slomp
Biogeosciences, 13, 5333–5355, https://doi.org/10.5194/bg-13-5333-2016, https://doi.org/10.5194/bg-13-5333-2016, 2016
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By combining detailed geochemical analyses with diagenetic modeling, we provide new insights into how methane dynamics may strongly overprint burial records of iron, sulfur and phosphorus in marine systems subject to changes in organic matter loading or water column salinity. A better understanding of these processes will improve our ability to read ancient sediment records and thus to predict the potential consequences of global warming and human-enhanced inputs of nutrients to the ocean.
Jianlin Zhao, Kristof Van Oost, Longqian Chen, and Gerard Govers
Biogeosciences, 13, 4735–4750, https://doi.org/10.5194/bg-13-4735-2016, https://doi.org/10.5194/bg-13-4735-2016, 2016
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We used a novel approach to reassess erosion rates on the CLP. We found that both current average topsoil erosion rates and the maximum magnitude of the erosion-induced carbon sink are overestimated on the CLP. Although average topsoil losses on the CLP are still high, a major increase in agricultural productivity occurred since 1980. Hence, erosion is currently not a direct threat to agricultural productivity on the CLP but the long-term effects of erosion on soil quality remain important.
Heiko Sahling, Christian Borowski, Elva Escobar-Briones, Adriana Gaytán-Caballero, Chieh-Wei Hsu, Markus Loher, Ian MacDonald, Yann Marcon, Thomas Pape, Miriam Römer, Maxim Rubin-Blum, Florence Schubotz, Daniel Smrzka, Gunter Wegener, and Gerhard Bohrmann
Biogeosciences, 13, 4491–4512, https://doi.org/10.5194/bg-13-4491-2016, https://doi.org/10.5194/bg-13-4491-2016, 2016
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We were excited about nature’s diversity when we discovered spectacular flows of heavy oil at the seafloor with the remotely operated vehicle QUEST 4000 m in Campeche Bay, southern Gulf of Mexico. Vigorous methane gas bubble emissions lead to massive gas hydrate deposits at water depth as deep as 3420 m. The hydrates formed metre-sized mounds at the seafloor that were densely overgrown by vestimentiferan tubeworms and other seep-typical organisms.
Clare Woulds, Steven Bouillon, Gregory L. Cowie, Emily Drake, Jack J. Middelburg, and Ursula Witte
Biogeosciences, 13, 4343–4357, https://doi.org/10.5194/bg-13-4343-2016, https://doi.org/10.5194/bg-13-4343-2016, 2016
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Estuarine sediments are important locations for carbon cycling and burial. We used tracer experiments to investigate how site conditions affect the way in which seafloor biological communities cycle carbon. We showed that while total respiration rates are primarily determined by temperature, total carbon processing by the biological community is strongly related to
its biomass. Further, we saw a distinct pattern of carbon cycling in sandy sediment, in which uptake by bacteria dominates.
Christine Alewell, Axel Birkholz, Katrin Meusburger, Yael Schindler Wildhaber, and Lionel Mabit
Biogeosciences, 13, 1587–1596, https://doi.org/10.5194/bg-13-1587-2016, https://doi.org/10.5194/bg-13-1587-2016, 2016
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Origin of suspended sediments in rivers is of crucial importance for optimization of catchment management. Sediment source attribution to a lowland river in central Switzerland with compound specific stable isotopes analysis (CSIA) indicated that 65 % of the suspended sediments originated from agricultural land during base flow, while forest was the dominant source during high flow. We achieved significant differences in CSIA signature from land uses dominated by C3 plant cultivation.
Ulrike Lomnitz, Stefan Sommer, Andrew W. Dale, Carolin R. Löscher, Anna Noffke, Klaus Wallmann, and Christian Hensen
Biogeosciences, 13, 1367–1386, https://doi.org/10.5194/bg-13-1367-2016, https://doi.org/10.5194/bg-13-1367-2016, 2016
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The study presents a P budget including the P input from the water column, the P burial in the sediments, as well as the P release from the sediments. We found that the P input could not maintain the P release rates. Consideration of other P sources, e.g., terrigenous P and P released from the dissolution of Fe oxyhydroxides, showed that none of these can account for the missing P. Thus, it is likely that abundant sulfide-oxidizing bacteria release the missing P during our measurement period.
J. Maltby, S. Sommer, A. W. Dale, and T. Treude
Biogeosciences, 13, 283–299, https://doi.org/10.5194/bg-13-283-2016, https://doi.org/10.5194/bg-13-283-2016, 2016
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The concurrence of methanogenesis and sulfate reduction was investigated in surface sediments (0–25cm b.s.f.) traversing the Peruvian margin. Surface methanogenesis was mainly based on non-competitive substrates to avoid competition with sulfate reducers. Accordingly, surface methanogenesis was mainly controlled by the availability of labile organic matter. The high relevance of surface methanogenesis especially on the shelf indicates its underestimated role within benthic methane budgeting.
Cited articles
\label{subsec:references} Aller, R. C., Blair, N. E., Xia, Q., and Rude, P. D.: Remineralization rates, recycling, and storage of carbon in Amazon shelf sediments, Cont. Shelf Res., 16, 753–786, 1996.
Aloisi, J. C., Cambon, J. P., Carbonne, J., Cauwet, G., Millot, C., Monaco, A., and Pauc, H.: Origin and role of the bottom nepheloid layer in the tranfer of particles into the marine environment – application to the gulf of lions, Oceanol. Acta, 5, 481–491, 1982.
Anschutz, P., Zhong, S. J., Sundby, B., Mucci, A., and Gobeil, C.: Burial efficiency of phosphorus and the geochemistry of iron in continental margin sediments, Limnol. Oceanogr., 43, 53–64, 1998.
Anschutz, P., Sundby, B., Lefrancois, L., Luther, G. W., and Mucci, A.: Interactions between metal oxides and species of nitrogen and iodine in bioturbated marine sediments, Geochim. Cosmochim. Ac., 64, 2751–2763, 2000.
Antonelli, C., Provansal, M., and Vella, C.: Recent morphological channel changes in a deltaic environment. The case of the Rh\^{}one River, France, Geomorphology, 57, 385–402, 2004.
Berelson, W. M., Hammond, D. E., and Cutter, G. A.: In situ measurements of calcium carbonate dissolution rates in deep-sea sediments, Geochim. Cosmochim. Ac., 54, 3013–3020, 1990.
Berg, P., Risgaard-Petersen, N., and Rysgaard, S.: Interpretation of measured concentration profiles in sediment pore water, Limnol. Oceanogr., 43(7), 1500–1510, 1998.
Berg, P., Rysgaard, S., and Thamdrup, B.: Dynamic, modeling of early diagenesis and nutrient cycling, A case study in an arctic marine sediment, Am. J. Sci., 303, 905–955, 2003.
Berner, R. A.: Stoichiometric models for nutrient regeneration in anoxic sediments, Limnol. Oceanogr. 22, 781–786, 1977.
Berner, R. A.: Early Diagenesis: A Theoretical Approach. Princeton Series in Geochemistry, edited by: Princeton, N. J., Princeton University Press, Princeton, 241 pp., 1980.
Berner, R. A.: Sedimentary pyrite formation: An update, Geochim. Cosmochim. Ac., 48(4), 605–615, 1984.
Berner, R. A.: Biogeochemical cycles of carbon and sulfur and their effect on atmospheric oxygen over phanerozoic time, Global Planet. Change, 75, 97–122, 1989.
Berner, E. K. and Berner, R. A.: Global environments: Water, Air and Geochemical cycles, Prentice-Hall: Upper Saddle River, NJ, 1996.
Boudreau, B. P.: Mathematics of tracer mixing in sediments. 1. Spatially-dependent, diffusive mixing, Am. J. Sci., 286, 161–198, 1986.
Boudreau, B. P.: Modeling the sulfide-oxygen reaction and associated pH gradients in porewaters, Geochim. Cosmochim. Ac., 55, 145–159, 1991.
Boudreau, B. P.: Diagenetic models and their implementation: Modeling transport and reactions in aquatic sediments, Springer-Verlag, Heidelberg, 414 pp., 1997.
Borges, A. V.: Do we have enough pieces of the jigsaw to integrate CO2 fluxes in the coastal ocean?, Estuaries, 28, 3–27, 2005.
Buscail, R., Pocklington, R., and Germain, C.: Seasonal variability of the organic-matter in a sedimentary coastal environment – sources, degradation and accumulation (continental shelf of the Gulf-of-Lions, Northwestern Mediterranean-Sea), Cont. Shelf Res., 15, 843–869, 1995.
Canfield, D. E.: Sulfate reduction and oxic respiration in marine sediments: implications for organic carbon preservation in euxinic environments, Deep-Sea Res. Pt. I, 36, 121–138, 1989.
Canfield, D. E.: Factors influencing organic carbon preservation in marine sediments, Chem. Geol., 114, 315–329, 1994.
Canfield, D. E. and Berner, R. A.: Dissolution and pyritization of magnetite in anoxic marine sediments, Geochim. Cosmochim. Ac., 51, 645–659, 1987.
Canfield, D. E., Jorgensen, B. B., Fossing, H., Glud, R., Gundersen, J., Ramsing, N. B., Thamdrup, B., Hansen, J. W., Nielsen, L. P., and Hall, P. O.: J. Pathways of organic-carbon oxidation in three continental-margin sediments, Mar. Geol., 113, 27–40, 1993a.
Canfield, D. E., Thamdrup, B., and Hansen, J. W.: The anaerobic degradation of organic-matter in danish coastal sediments – iron reduction, manganese reduction, and sulfate reduction, Geochim. Cosmochim. Ac., 57, 3867–3883, 1993b.
Cathalot, C., Rabouille, C., Pastor, L., Deflandre, B., Viollier, E., Buscail, R., Grémare, A., Treignier, C., and Pruski, A.: Temporal variability of carbon recycling in coastal sediments influenced by rivers: assessing the impact of flood inputs in the Rhône River prodelta, Biogeosciences, 7, 1187–1205, https://doi.org/10.5194/bg-7-1187-2010, 2010.
Chanton, J. P., Martens, C. S., and Goldhaber, M. B.: Biogeochemical cycling in an organic-rich coastal marine basin. 7. Sulfur mass balance, oxygen uptake and sulfide retention, Geochim. Cosmochim. Ac., 51, 1187–1199. 1987.
Chen, C. T. A. and Borges, A. V.: Reconciling opposing views on carbon cycling in the coastal ocean: continental shelves as sinks and near-shore ecosystems as sources of atmospheric CO2, Deep-Sea Res. Pt. II, 56, 578–590, 2009.
Cline, J. D.: Spectrophotometric determination of hydrogen sulfide in natural waters, Limnol. Oceanog. 14, 454–458, 1969.
Copin-Montegut, C.: Alkalinity and carbon budgets in the Mediterranean Sea, Global Biogeochem. Cy., 7, 915–925, 1993.
Dedieu, K., Rabouille, C., Gilbert, F., Soetaert, K., Metzger, E., Simonucci, C., Jézéquel, D., Prévot, F., Anschutz, P., Hulth, S., Ogier, S., and Mesnage, V.: Coupling of carbon, nitrogen and oxygen cycles in sediments from a Mediterranean lagoon: a seasonal perspective, Mar. Ecol. Progr. Ser., 346, 45–59, 2007.
Deflandre, B., Mucci, A., Gagne, J. P., Guignard, C., and Sundby, B.: Early diagenetic processes in coastal marine sediments disturbed by a catastrophic sedimentation event, Geochim. Cosmochim. Ac., 66, 2547–2558, 2002.
Durrieu De Madron, X. D., Abassi, A., Heussner, S., Monaco, A., Aloisi, J. C., Radakovitch, O., Giresse, P., Buscail, R., and Kerhervé, P.: Particulate matter and organic carbon budgets for the gulf of lions (NW mediterranean), Oceanol. Acta, 23, 717–730, 2000.
Dhakar, S. P. and Burdige, D. J.: A coupled, non-linear, steady state model for early diagenetic processes in pelagic sediments, Am. J. Sci., 296, 244–265, 1996.
Drexler, T. M. and Nittrouer, C. A.: Stratigraphic signatures due to the flood deposition near the Rhône River: Gulf of Lions, northwest Mediterranean Sea, Cont. Shelf Res., 28(15), 2000–2016, 2008.
Epping, E., van der Zee, C., Soetaert, K., and Helder, W.: On the oxidation and burial of organic carbon in sediments of the Iberian Margin and Nazare Canyon (NE Atlantic), Progr. Oceanogr., 52, 399–431, 2002.
Gatti, J., Petrenko, A., Devenon, J.-L., Leredde, Y., and Ulses, C.: The Rhône river dilution zone present in the northeastern shelf of the Gulf of Lion in December 2003, Cont. Shelf Res., 26, 1794–1805, 2006.
Garcia-Garcia, A., Orange, D., Lorenson, T., Radakovitch, O., Tesi, T., Miserocchi, S., Berné, S., Friend, P. L., Nittrouer, C., and Normand, A.: Shallow gas off the Rh\^{}one prodelta, Gulf of Lions, Mar. Geol., 234(1–4), 215–231, 2006.
Haese, R. R., Schramm, J., van der Loeff, M. M. R., and Schulz, H. D.: A comparative study of iron and manganese diagenesis in continental slope and deep sea basin sediments off Uruguay (SW Atlantic), Int. J. Earth Sci., 88, 619–629, 2000.
Hall, P. O. and Aller, R. C.: Rapid, small-volume, flow injection analysis for $§igma$CO2 and NH4+ in marine and freshwaters, Limnol. Oceanogr., 37, 1113–1119, 1992.
Hansen, H. P.: Determination of oxygen, Methods of Seawater Analysis, Wiley-VCH Verlag GmbH, 75–89, 2007.
Hansen, H. P. and Koroleff, F.: Determination of nutrients, Methods of Seawater Analysis, Wiley-VCH Verlag GmbH, 159–228, 2007.
Hargrave, B. T. and Phillips, G. A.: Decay times of organic-carbon in sedimented detritus in a macrotidal estuary, Mar. Ecol.-Prog. Ser., 56, 271–279, 1989.
Hargrave, B. T., Holmer, M., and Newcombe, C. P.: Towards a classification of organic enrichment in marine sediments based on biogeochemical indicators, Mar. Pollut. Bull., 56(5), 810–824, 2008.
Hedges, J. I. and Keil, R. G.: Sedimentary organic matter preservation: an assessment and speculative synthesis, Mar. Chem., 49, 81–115, 1995.
Henrichs, S. M. and Reeburgh, W. S.: Anaerobic mineralization of marine sediment organic matter: rates and the role of anaerobic processes in the oceanic carbon economy, Geomicrobiology, 5, 191–236, 1987.
Helder, W.: Early diagenesis and sediment-water exchange in the Golfe du Lion, European Commission, Brussel, 1989.
Herman, P. M. J., Soetaert, K., Middelburg, J. J., Heip, C., Lohse, L., Epping, E., Helder, W., Antia, A. N., and Peinert, R.: The seafloor as the ultimate sediment trap-using sediment properties to constrain benthic-pelagic exchange processes at the goban spur, Deep-Sea Res. Pt. II, 48, 3245–3264, 2001.
Holligans, P. M. and Reiners, W. A.: Predicting the responses of the coastal zone to global change, Adv. Ecol. Res., 22, 211–255, 1992.
Huerta-Diaz, M. A. and Morse, J. W.: A quantitative method for determination of trace-metal concentrations in sedimentary pyrite, Mar. Chem., 29, 119–144, 1990.
Huerta-Diaz, M. A. and Morse, J. W.: Pyritization of trace metals in anoxic marine sediments, Geochim. Cosmochim. Ac., 56, 2681–2702, 1992.
Hulth, S., Tengberg, A., Landen, A., and Hall, P. O. J.: Mineralization and burial of organic carbon in sediments of the Southern Weddell Sea (Antarctica), Deep-Sea Res. Pt. I, 44, 955–981, 1997.
Ingall, E. and Jahnke, R.: Evidence for enhanced phosphorus regeneration from marine sediments overlain by oxygen depleted waters, Geochim. Cosmochim. Ac., 58, 2571–2575, 1994.
Jorgensen, B. B.: Sulfur cycle of a coastal marine sediment (Limfjorden, Denmark), Limnol. Oceanogr., 22, 814–832, 1977.
Jorgensen, B. B., Bang, M., and Blackburn, T. H.: Anaerobic mineralization in marine sediments from the Baltic Sea-North transition, Mar. Ecol. Progr. Ser., 59, 39–54, 1990.
Kasih, G. A. A., Chiba, S., Yamagata, Y., Shimizu, Y., and Haraguchi, K.: Numerical model on the material circulation for coastal sediment in Ago Bay, Japan, J. Mar. Syst., 77, 45–60, 2009.
King, G. M., Howes, B. L., and Dacey, J. W. H.: Short-term end-products of sulfate reduction in a salt marsh formation of acid volatile sulfides, elemental sulfur, and pyrite, Geochim. Cosmochim. Ac., 49, 1561–1566, 1985.
Kostka, J. E. and Luther, G. W.: Partitioning and speciation of solid phase iron in salt-marsh sediments, Geochim. Cosmochim. Ac., 58, 1701–1710, 1994.
Lansard, B., Rabouille, C., Denis, L., and Grenz, C.: In situ oxygen uptake rates by coastal sediments under the influence of the Rhône River (NW Mediterranean Sea), Symposium on Coastal Ecosystem Responses to Changing Nutrient Inputs from Large Temperate and Sub-Tropical Rivers, Fujian, China, 1501–1510, 2005.
Lansard, B., Rabouille, C., Denis, L., and Grenz, C.: Benthic remineralization at the land-ocean interface: a case study of the Rhône River (NW Mediterranean Sea), Estuar. Coast. Shelf Sci., 81, 544–554, 2009.
Littke, R., Baker, D. R., Leythaeuser, D., and Rullkötter, J.: Keys to the depositional history of the Posidonia Shale (Toarcian) in the Hils syncline, Northern Germany. Modern and Ancient Continental Shelf Anoxia, edited by: Tyson, R. V. and Pearson, T. H., Geol. Soc. London, Spec. Publ. 58, 311–334, 1991.
Lückge, A., Ercegovac, M., Strauss, H., and Littke, R.: Early diagenetic alteration of organic matter by sulfate reduction in Quaternary sediments from the Northeastern Arabian Sea, Mar. Geol., 158(1–4), 1–13, 1999.
Mackin, J. E. and Swider, K. T.: Organic matter decomposition pathways and oxygen consumption in coastal marine sediments, J. Mar. Res., 47, 681–716, 1989.
Maerki, M., Muller, B., Dinkel, C., and Wehrli, B.: Mineralization pathways in lake sediments with different oxygen and organic carbon supply, Limnol. Oceanogr., 54, 428–438, 2009.
Marion, C., Dufois, F., Arnaud, M., and Vella, C.: In situ record of sedimentary processes near the Rhône River mouth during winter events (Gulf of Lions, Mediterranean Sea), Cont. Shelf Res., 30(9), 1095–1107, 2010.
Martens, C. S. and Val Klump, J.: Biogeochemical cycling in an organic-rich coastal marine basin 4. An organic carbon budget for sediments dominated by sulfate reduction and methanogenesis, Geochim. Cosmochim. Ac., 48, 1987–2004, 1984.
McKee, B. A., Aller, R. C., Allison, M. A., Bianchi, T. S., and Kineke, G. C.: Transport and transformation of dissolved and particulate materials on continental margins influenced by major rivers: benthic boundary layer and seabed processes, Cont. Shelf Res., 24, 899–926, 2004.
Miralles, J., Radakovitch, O., and Aloisi, J. C.: Pb-210 sedimentation rates from the northwestern mediterranean margin, Mar. Geol., 216, 155–167, 2005.
Monaco, A., de Madron, X. D., Radakovitch, O., Heussner, S., and Carbonne, J.: Origin and variability of downward biogeochemical fluxes on the Rhone continental margin (NW Mediterranean), Deep-Sea Res. Pt. I, 46, 1483–1511, 1999.
Morse, J. W. and Eldridge, P. M.: A non-steady state diagenetic model for changes in sediment biogeochemistry in response to seasonally hypoxic/anoxic conditions in the "dead zone" of the Louisiana shelf, Mar. Chem., 106, 239–255, 2007.
Mucci, A. and Morse, J. W.: The solubility of calcite in seawater solutions of various magnesium concentration, it = 0.697 m at 25°C and one atmosphere total pressure, Geochim. Cosmochim. Ac., 48, 815–822, 1984.
Pastor, L., Deflandre, B., Viollier, E., Cathalot, C., Metzger, E.,Rabouille, C., Escoubeyrou, K., Lloret, E., Pruski, A., Vétion, G., Desmalades, M., Buscail, R., and Grémare, A.: Influence of the organic matter composition on benthic oxygen demand in the Rhône River prodelta (NW Mediterranean Sea), Cont. Shelf Res., 31, 1008–1019, 2011.
Pedersen, T. F. and Price, N. B.: The geochemistry of manganese carbonate in panama basin sediments, Geochim. Cosmochim. Ac., 46, 59–68, 1982.
Pont, D., Simonnet, J. P., and Walter, A. V.: Medium-term changes in suspended sediment delivery to the ocean: Consequences of catchment heterogeneity and river management (Rhône River, France), Estuar. Coast. Shelf Sci., 54, 1–18, 2002.
Pratihary, A. K., Naqvi, S. W. A., Naik, H., Thorat, B. R., Narvenkar, G., Manjunatha, B. R., and Rao, V. P.: Benthic fluxes in a tropical Estuary and their role in the ecosystem, Estuar. Coast. Shelf Sci., 85, 387–398, 2009.
Quintana, C. O., Tang, M., and Kristensen, E.: Simultaneous study of particle reworking, irrigation transport and reaction rates in sediment bioturbated by the polychaetes heteromastus and marenzelleria, J. Exp. Mar. Biol. Ecol., 352, 392–406, 2007.
Rabouille, C. and Gaillard, J. F.: Toward the EDGE: Early diagenetic global explanation: A model depicting the early diagenesis of organic matter, O2, NO3, Mn, and PO4, Geochim. Cosmochim. Ac., 55, 2511–2525, 1991.
Radakovitch, O., Charmasson, S., Arnaud, M., and Bouisset, P.: Pb-210 and caesium accumulation in the Rh\^{}one delta sediments, Estuar. Coast. Shelf Sci., 48, 77–92, 1999.
Raiswell, R., Canfield, D. E., and Berner, R. A.: A comparison of iron extraction methods for the determination of degree of pyritisation and the recognition of iron-limited pyrite formation, Chem. Geol., 111, 101–110, 1994.
Rasmussen, H. and Jorgensen, B. B.: Microelectrode studies of seasonal oxygen uptake in a coastal sediment: role of molecular diffusion, Mar. Ecol. Prog.-Ser., 81, 289–303, 1992.
Revsbech, N. P.: An oxygen microsensor with a guard cathode, Limnol. Oceanogr., 34, 474–478, 1989.
Rhoads, D. C. and Cande, S.: Sediment profile camera for in situ study of organism-sediment relations, Limnol. Oceanogr., 16, 110–114, 1971.
Rizzo, W. M. and Christian, R. R.: Significance of subtidal sediments to heterotrophically mediated oxygen and nutrient dynamics in a temperate estuary, Estuaries, 19, 475–487, 1996.
Rysgaard, S., Thamdrup, B., Risgaard-Petersen, N., Fossing, H., Berg, P., Christensen, P. B., and Dalsgaard, T.: Seasonal carbon and nutrient mineralization in a high-arctic coastal marine sediment, young sound, Northeast Greenland, Mar. Ecol.-Prog. Ser., 175, 261–276, 1998.
Sempéré, R., Charriere, B., Van Wambeke, F., and Cauwet, G.: Carbon inputs of the Rhône River to the Mediterranean Sea: biogeochemical implications, Global Biogeochem. Cy., 14, 669–681, 2000.
Soetaert, K. and Herman, P. M. J.: "A practical guide to ecological modelling – using R as a simulation platform", Springer Science + Business Media, B.V., 372 pp., 2009.
Soetaert, K., Herman, P. M. J., and Middelburg, J. J.: A model of early diagenetic processes from the shelf to abyssal depths, Geochim. Cosmochim. Ac., 60, 1019–1040, 1996a.
Soetaert, K., Herman, P. M. J., and Middelburg, J. J.: Dynamic response of deep-sea sediments to seasonal variations: a model, Limnol. Oceanogr., 41, 1651–1668, 1996b.
Soetaert, K., Herman, P. M. J., Middelburg, J. J., and Heip, C.: Assessing organic matter mineralization rate, degradability and mixing rate in an ocean margin sediment (North-East Atlantic) by diagenetic modelling, J. Mar. Res., 56, 519–534, 1998.
Soetaert, K., Petzoldt, T., and Meysman, F.: marelac: Tools for Aquatic Sciences. R package version 2.1, available at: http://cran.r-project.org/web/packages/marelac, 2010.
Tabatabai, M. A.: A rapid method for determination of sulfate in water samples, Environ. Lett., 7(3), 237–243, 1974.
Tesi, T., Miserocchi, S., Goni, M. A., and Langone, L.: Source, transport and fate of terrestrial organic carbon on the Western Mediterranean Sea, Gulf of Lions, France, Mar. Chem., 105, 101–117, 2007.
Thamdrup, B. and Dalsgaard, T.: The fate of ammonium in anoxic manganese oxide-rich marine sediment, Geochim. Cosmochim. Ac., 64(24), 4157–4164, 2000.
Thamdrup, B., Fossing, H., and Jorgensen, B. B.: Manganese, iron and sulfur cycling in a coastal marine sediment, Aarhus Bay, Denmark, Geochim. Cosmochim. Ac., 58, 5115–5129, 1994.
Thomsen, U., Thamdrup, B., Stahl, D. A., and Canfield, D. E.: Pathways of organic carbon oxidation in a deep lacustrine sediment, Lake Michigan, Limnol. Oceanogr., 49, 2046–2057, 2004.
Tromp, T. K., Van Cappellen, P., and Key, R. M.: A global model for the early diagenesis of organic carbon and organic phosphorus in marine sediments, Geochim. Cosmochim. Acta, 59(7), 1259–1284, 1995.
Van Cappellen, P. and Wang, Y.: Cycling of iron and manganese in surface sediments: a general theory for the coupled transport and reaction of carbon, oxygen, nitrogen, sulfur, iron, and manganese, Am. J. Sci., 296, 197–243, 1996.
Wakeham, S. G., Lee, C., Hedges, J. I., Hernes, P. J., and Peterson, M. L.: Molecular indicators of diagenetic status in marine organic matter, Geochim. Cosmochim. Ac., 61(24), 5363–5369, 1997.
Wang, Y. and Van Capellen, P.: A multicomponent reactive transport model of early diagenesis: application to redox cycling in coastal sediments, Geochim. Cosmochim. Ac., 60, 2993–3014, 1996.
Westrich, J. T. and Berner, R. A.: The role of sedimentary organic matter in bacterial sulfate reduction – the g model tested, Limnol. Oceanogr., 29, 236–249, 1984.
Wijsman, J. W. M., Herman, P. M. J., Middelburg, J. J., and Soetaert, K.: A model for early diagenetic processes in sediments of the continental shelf of the Black Sea, Estuar. Coast. Shelf Sci., 54, 403–421, 2002.
Wollast, R.: Evaluation and comparison of the global carbon cycle in the coastal zone and in the open ocean, in: The Sea, the Global Coastal Ocean, Processes and Methods, edited by: Brink, K. H. and Robinson, A. R., Wiley and Sons, New York, 213–252, 1998.
Zuo, Z., Eisma, D., and Berger, G. W.: Determination of sediment accumulation and mixing rates in the Gulf of Lions, Mediterranean Sea, Oceanol. Acta, 14, 253–262, 1991.
Zuo, Z., Eisma, D., Gieles, R., and Beks, J.: Accumulation rates and sediment deposition in the North-Western Mediterranean, Deep-Sea Res. Pt. II, 44, 597–609, 1997.
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