Articles | Volume 14, issue 14
https://doi.org/10.5194/bg-14-3585-2017
© Author(s) 2017. 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-14-3585-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
27 Jul 2017
Research article |
| 27 Jul 2017
Sediment phosphorus speciation and mobility under dynamic redox conditions
Chris T. Parsons
CORRESPONDING AUTHOR
Ecohydrology Research Group and The Water Institute, University of
Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada
Fereidoun Rezanezhad
Ecohydrology Research Group and The Water Institute, University of
Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada
David W. O'Connell
Ecohydrology Research Group and The Water Institute, University of
Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada
Department of Civil, Structural and Environmental Engineering, Trinity
College Dublin, College Green, Museum Building, Dublin, Ireland
Philippe Van Cappellen
Ecohydrology Research Group and The Water Institute, University of
Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada
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Eunji Byun, Fereidoun Rezanezhad, Stephanie Slowinski, Christina Lam, Saraswati Bhusal, Stephanie Wright, William L. Quinton, Kara L. Webster, and Philippe Van Cappellen
SOIL, 11, 309–321, https://doi.org/10.5194/soil-11-309-2025, https://doi.org/10.5194/soil-11-309-2025, 2025
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To investigate how added nutrient nitrogen (N) and phosphorus (P) affect subarctic peatlands, we sampled peat soils from bog and fen type peatlands in the Northwest Territories, Canada, and measured CO2 and CH4 production rates by means of laboratory incubations. Our short-term experiments show that changes in nutrient concentrations in soil water can significantly affect microbial carbon cycling, suggesting the necessity of additional considerations of wildfire and permafrost thaw impacts on peatland carbon storage.
Nathaniel B. Weston, Cynthia Troy, Patrick J. Kearns, Jennifer L. Bowen, William Porubsky, Christelle Hyacinthe, Christof Meile, Philippe Van Cappellen, and Samantha B. Joye
Biogeosciences, 21, 4837–4851, https://doi.org/10.5194/bg-21-4837-2024, https://doi.org/10.5194/bg-21-4837-2024, 2024
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Nitrous oxide (N2O) is a potent greenhouse and ozone-depleting gas produced largely from microbial nitrogen cycling processes, and human activities have resulted in increases in atmospheric N2O. We investigate the role of physical and chemical disturbances to soils and sediments in N2O production. We demonstrate that physicochemical perturbation increases N2O production, microbial community adapts over time, and initial perturbation appears to confer resilience to subsequent disturbance.
Hannah Adams, Jane Ye, Bhaleka D. Persaud, Stephanie Slowinski, Homa Kheyrollah Pour, and Philippe Van Cappellen
Earth Syst. Sci. Data, 14, 5139–5156, https://doi.org/10.5194/essd-14-5139-2022, https://doi.org/10.5194/essd-14-5139-2022, 2022
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Climate warming and land-use changes are altering the environmental factors that control the algal
productivityin lakes. To predict how environmental factors like nutrient concentrations, ice cover, and water temperature will continue to influence lake productivity in this changing climate, we created a dataset of chlorophyll-a concentrations (a compound found in algae), associated water quality parameters, and solar radiation that can be used to for a wide range of research questions.
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Amanda C. Semler and Anne E. Dekas
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Biogeosciences, 21, 3041–3052, https://doi.org/10.5194/bg-21-3041-2024, https://doi.org/10.5194/bg-21-3041-2024, 2024
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Nicole Burdanowitz, Gerhard Schmiedl, Birgit Gaye, Philipp M. Munz, and Hartmut Schulz
Biogeosciences, 21, 1477–1499, https://doi.org/10.5194/bg-21-1477-2024, https://doi.org/10.5194/bg-21-1477-2024, 2024
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We analyse benthic foraminifera, nitrogen isotopes and lipids in a sediment core from the Gulf of Oman to investigate how the oxygen minimum zone (OMZ) and bottom water (BW) oxygenation have reacted to climatic changes since 43 ka. The OMZ and BW deoxygenation was strong during the Holocene, but the OMZ was well ventilated during the LGM period. We found an unstable mode of oscillating oxygenation states, from moderately oxygenated in cold stadials to deoxygenated in warm interstadials in MIS 3.
Maxime Daviray, Emmanuelle Geslin, Nils Risgaard-Petersen, Vincent V. Scholz, Marie Fouet, and Edouard Metzger
Biogeosciences, 21, 911–928, https://doi.org/10.5194/bg-21-911-2024, https://doi.org/10.5194/bg-21-911-2024, 2024
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Coastal marine sediments are subject to major acidification processes because of climate change and human activities, but these processes can also result from biotic activity. We studied the sediment acidifcation effect on benthic calcareous foraminifera in intertidal mudflats. The strong pH decrease in sediments probably caused by cable bacteria led to calcareous test dissolution of living and dead foraminifera, threatening the test preservation and their robustness as environmental proxies.
Sebastian J. E. Krause, Jiarui Liu, David J. Yousavich, DeMarcus Robinson, David W. Hoyt, Qianhui Qin, Frank Wenzhöfer, Felix Janssen, David L. Valentine, and Tina Treude
Biogeosciences, 20, 4377–4390, https://doi.org/10.5194/bg-20-4377-2023, https://doi.org/10.5194/bg-20-4377-2023, 2023
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Methane is a potent greenhouse gas, and hence it is important to understand its sources and sinks in the environment. Here we present new data from organic-rich surface sediments below an oxygen minimum zone off the coast of California (Santa Barbara Basin) demonstrating the simultaneous microbial production and consumption of methane, which appears to be an important process preventing the build-up of methane in these sediments and the emission into the water column and atmosphere.
Sinan Xu, Bo Liu, Sandra Arndt, Sabine Kasten, and Zijun Wu
Biogeosciences, 20, 2251–2263, https://doi.org/10.5194/bg-20-2251-2023, https://doi.org/10.5194/bg-20-2251-2023, 2023
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We use a reactive continuum model based on a lognormal distribution (l-RCM) to inversely determine model parameters μ and σ at 123 sites across the global ocean. Our results show organic matter (OM) reactivity is more than 3 orders of magnitude higher in shelf than in abyssal regions. In addition, OM reactivity is higher than predicted in some specific regions, yet the l-RCM can still capture OM reactivity features in these regions.
Christiane Schmidt, Emmanuelle Geslin, Joan M. Bernhard, Charlotte LeKieffre, Mette Marianne Svenning, Helene Roberge, Magali Schweizer, and Giuliana Panieri
Biogeosciences, 19, 3897–3909, https://doi.org/10.5194/bg-19-3897-2022, https://doi.org/10.5194/bg-19-3897-2022, 2022
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This study is the first to show non-selective deposit feeding in the foraminifera Nonionella labradorica and the possible uptake of methanotrophic bacteria. We carried out a feeding experiment with a marine methanotroph to examine the ultrastructure of the cell and degradation vacuoles using transmission electron microscopy (TEM). The results revealed three putative methanotrophs at the outside of the cell/test, which could be taken up via non-targeted grazing in seeps or our experiment.
James P. J. Ward, Katharine R. Hendry, Sandra Arndt, Johan C. Faust, Felipe S. Freitas, Sian F. Henley, Jeffrey W. Krause, Christian März, Allyson C. Tessin, and Ruth L. Airs
Biogeosciences, 19, 3445–3467, https://doi.org/10.5194/bg-19-3445-2022, https://doi.org/10.5194/bg-19-3445-2022, 2022
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The seafloor plays an important role in the cycling of silicon (Si), a key nutrient that promotes marine primary productivity. In our model study, we disentangle major controls on the seafloor Si cycle to better anticipate the impacts of continued warming and sea ice melt in the Barents Sea. We uncover a coupling of the iron redox and Si cycles, dissolution of lithogenic silicates, and authigenic clay formation, comprising a Si sink that could have implications for the Arctic Ocean Si budget.
Hanni Vigderovich, Werner Eckert, Michal Elul, Maxim Rubin-Blum, Marcus Elvert, and Orit Sivan
Biogeosciences, 19, 2313–2331, https://doi.org/10.5194/bg-19-2313-2022, https://doi.org/10.5194/bg-19-2313-2022, 2022
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Anaerobic oxidation of methane (AOM) is one of the major processes limiting the release of the greenhouse gas methane from natural environments. Here we show that significant AOM exists in the methane zone of lake sediments in natural conditions and even after long-term (ca. 18 months) anaerobic slurry incubations with two stages. Methanogens were most likely responsible for oxidizing the methane, and humic substances and iron oxides are likely electron acceptors to support this oxidation.
Bjorn Sundby, Pierre Anschutz, Pascal Lecroart, and Alfonso Mucci
Biogeosciences, 19, 1421–1434, https://doi.org/10.5194/bg-19-1421-2022, https://doi.org/10.5194/bg-19-1421-2022, 2022
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A glacial–interglacial methane-fuelled redistribution of reactive phosphorus between the oceanic and sedimentary phosphorus reservoirs can occur in the ocean when falling sea level lowers the pressure on the seafloor, destabilizes methane hydrates, and triggers the dissolution of P-bearing iron oxides. The mass of phosphate potentially mobilizable from the sediment is similar to the size of the current oceanic reservoir. Hence, this process may play a major role in the marine phosphorus cycle.
Florian Lauryssen, Philippe Crombé, Tom Maris, Elliot Van Maldegem, Marijn Van de Broek, Stijn Temmerman, and Erik Smolders
Biogeosciences, 19, 763–776, https://doi.org/10.5194/bg-19-763-2022, https://doi.org/10.5194/bg-19-763-2022, 2022
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Surface waters in lowland regions have a poor surface water quality, mainly due to excess nutrients like phosphate. Therefore, we wanted to know the phosphate levels without humans, also called the pre-industrial background. Phosphate binds strongly to sediment particles, suspended in the river water. In this research we used sediments deposited by a river as an archive for surface water phosphate back to 1800 CE. Pre-industrial phosphate levels were estimated at one-third of the modern levels.
Gerard J. M. Versteegh, Andrea Koschinsky, Thomas Kuhn, Inken Preuss, and Sabine Kasten
Biogeosciences, 18, 4965–4984, https://doi.org/10.5194/bg-18-4965-2021, https://doi.org/10.5194/bg-18-4965-2021, 2021
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Oxygen penetrates sediments not only from the ocean bottom waters but also from the basement. The impact of the latter is poorly understood. We show that this basement oxygen has a clear impact on the nitrogen cycle, the redox state, and the distribution of manganese, nickel cobalt and organic matter in the sediments. This is important for (1) global biogeochemical cycles, (2) understanding sedimentary life and (3) the interpretation of the sediment record to reconstruct the past.
Annika Fiskal, Eva Anthamatten, Longhui Deng, Xingguo Han, Lorenzo Lagostina, Anja Michel, Rong Zhu, Nathalie Dubois, Carsten J. Schubert, Stefano M. Bernasconi, and Mark A. Lever
Biogeosciences, 18, 4369–4388, https://doi.org/10.5194/bg-18-4369-2021, https://doi.org/10.5194/bg-18-4369-2021, 2021
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Microbially produced methane can serve as a carbon source for freshwater macrofauna most likely through grazing on methane-oxidizing bacteria. This study investigates the contributions of different carbon sources to macrofaunal biomass. Our data suggest that the average contribution of methane-derived carbon is similar between different fauna but overall remains low. This is further supported by the low abundance of methane-cycling microorganisms.
Astrid Hylén, Sebastiaan J. van de Velde, Mikhail Kononets, Mingyue Luo, Elin Almroth-Rosell, and Per O. J. Hall
Biogeosciences, 18, 2981–3004, https://doi.org/10.5194/bg-18-2981-2021, https://doi.org/10.5194/bg-18-2981-2021, 2021
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Sediments in oxygen-depleted ocean areas release high amounts of phosphorus, feeding algae that consume oxygen upon degradation, leading to further phosphorus release. Oxygenation is thought to trap phosphorus in the sediment and break this feedback. We studied the sediment phosphorus cycle in a previously anoxic area after an inflow of oxic water. Surprisingly, the sediment phosphorus release increased, showing that feedbacks between phosphorus release and oxygen depletion can be hard to break.
Sebastiaan J. van de Velde, Rebecca K. James, Ine Callebaut, Silvia Hidalgo-Martinez, and Filip J. R. Meysman
Biogeosciences, 18, 1451–1461, https://doi.org/10.5194/bg-18-1451-2021, https://doi.org/10.5194/bg-18-1451-2021, 2021
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Some 540 Myr ago, animal life evolved in the ocean. Previous research suggested that when these early animals started inhabiting the seafloor, they retained phosphorus in the seafloor, thereby limiting photosynthesis in the ocean. We studied salt marsh sediments with and without animals and found that their impact on phosphorus retention is limited, which implies that their impact on the global environment might have been less drastic than previously assumed.
Martijn Hermans, Nils Risgaard-Petersen, Filip J. R. Meysman, and Caroline P. Slomp
Biogeosciences, 17, 5919–5938, https://doi.org/10.5194/bg-17-5919-2020, https://doi.org/10.5194/bg-17-5919-2020, 2020
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This paper demonstrates that the recently discovered cable bacteria are capable of using a mineral, known as siderite, as a source for the formation of iron oxides. This work also demonstrates that the activity of cable bacteria can lead to a distinct subsurface layer in the sediment that can be used as a marker for their activity.
Torben Windirsch, Guido Grosse, Mathias Ulrich, Lutz Schirrmeister, Alexander N. Fedorov, Pavel Y. Konstantinov, Matthias Fuchs, Loeka L. Jongejans, Juliane Wolter, Thomas Opel, and Jens Strauss
Biogeosciences, 17, 3797–3814, https://doi.org/10.5194/bg-17-3797-2020, https://doi.org/10.5194/bg-17-3797-2020, 2020
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To extend the knowledge on circumpolar deep permafrost carbon storage, we examined two deep permafrost deposit types (Yedoma and alas) in central Yakutia. We found little but partially undecomposed organic carbon as a result of largely changing sedimentation processes. The carbon stock of the examined Yedoma deposits is about 50 % lower than the general Yedoma domain mean, implying a very hetererogeneous Yedoma composition, while the alas is approximately 80 % below the thermokarst deposit mean.
Anna Plass, Christian Schlosser, Stefan Sommer, Andrew W. Dale, Eric P. Achterberg, and Florian Scholz
Biogeosciences, 17, 3685–3704, https://doi.org/10.5194/bg-17-3685-2020, https://doi.org/10.5194/bg-17-3685-2020, 2020
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We compare the cycling of Fe and Cd in sulfidic sediments of the Peruvian oxygen minimum zone. Due to the contrasting solubility of their sulfide minerals, the sedimentary Fe release and Cd burial fluxes covary with spatial and temporal distributions of H2S. Depending on the solubility of their sulfide minerals, sedimentary trace metal fluxes will respond differently to ocean deoxygenation/expansion of H2S concentrations, which may change trace metal stoichiometry of upwelling water masses.
Biqing Zhu, Manuel Kübler, Melanie Ridoli, Daniel Breitenstein, and Martin H. Schroth
Biogeosciences, 17, 3613–3630, https://doi.org/10.5194/bg-17-3613-2020, https://doi.org/10.5194/bg-17-3613-2020, 2020
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We provide evidence that the greenhouse gas methane (CH4) is enclosed in calcareous glacier-forefield sediments across Switzerland. Geochemical analyses confirmed that this ancient CH4 has its origin in the calcareous parent bedrock. Our estimate of the total quantity of CH4 enclosed in sediments across Switzerland indicates a large CH4 mass (~105 t CH4). We produced evidence that CH4 is stable in its enclosed state, but additional experiments are needed to elucidate its long-term fate.
Matteo Puglini, Victor Brovkin, Pierre Regnier, and Sandra Arndt
Biogeosciences, 17, 3247–3275, https://doi.org/10.5194/bg-17-3247-2020, https://doi.org/10.5194/bg-17-3247-2020, 2020
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A reaction-transport model to assess the potential non-turbulent methane flux from the East Siberian Arctic sediments to water columns is applied here. We show that anaerobic oxidation of methane (AOM) is an efficient filter except for high values of sedimentation rate and advective flow, which enable considerable non-turbulent steady-state methane fluxes. Significant transient methane fluxes can also occur during the building-up phase of the AOM-performing biomass microbial community.
Kyle Delwiche, Junyao Gu, Harold Hemond, and Sarah P. Preheim
Biogeosciences, 17, 3135–3147, https://doi.org/10.5194/bg-17-3135-2020, https://doi.org/10.5194/bg-17-3135-2020, 2020
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In this study, we investigate whether bubbles transport sediments containing arsenic and cyanobacteria from the bottom to the top of a polluted lake. We measured arsenic and cyanobacteria from bubble traps in the lake and from an experimental bubble column in the laboratory. We found that bubble transport was not an important source of arsenic in the surface waters but that bubbles could transport enough cyanobacteria to the surface to exacerbate harmful algal blooms.
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.
Cited articles
Aller, R. C.: Bioturbation and remineralization of sedimentary organic matter: effects of redox oscillation, Chem. Geol., 114, 331–345, https://doi.org/10.1016/0009-2541(94)90062-0, 1994.
Aller, R. C.: Conceptual models of early diagenetic processes: The muddy seafloor as an unsteady, batch reactor, J. Mar. Res., 62, 815–835, https://doi.org/10.1357/0022240042880837, 2004.
Amirbahman, A., Lake, B. A., and Norton, S. A.: Seasonal phosphorus dynamics in the surficial sediment of two shallow temperate lakes: a solid-phase and pore-water study, Hydrobiologia, 701, 65–77, https://doi.org/10.1007/s10750-012-1257-z, 2013.
Baldwin, D. S.: The phosphorus composition of a diverse series of Australian sediments, Hydrobiologia, 335, 63–73, https://doi.org/10.1007/BF00013684, 1996.
Berner, R. A.: Stoichiometric models for nutrient regeneration m anoxic sediments1: Nutrient regeneration, Limnol. Oceanogr., 22, 781–786, https://doi.org/10.4319/lo.1977.22.5.0781, 1977.
Bonneville, S., Van Cappellen, P., and Behrends, T.: Microbial reduction of iron(III) oxyhydroxides: effects of mineral solubility and availability, Chem. Geol., 212, 255–268, https://doi.org/10.1016/j.chemgeo.2004.08.015, 2004.
Bowman, J. and Theysmeyer, T.: 2013 RBG Marsh Sediment Quality Assessment (No. Report No. 2014-14), Royal Botanical Gardens, Burlington, Ontario, 2014.
Cade-Menun, B. J.: Characterizing phosphorus in environmental and agricultural samples by 31P nuclear magnetic resonance spectroscopy, Talanta, 66, 359–371, https://doi.org/10.1016/j.talanta.2004.12.024, 2005.
Cade-Menun, B. J. and Preston, C. M.: A Comparison of Soil Extraction Procedures for 31P NMR Spectroscopy, Soil Sci., 161, 770–785, https://doi.org/10.1097/00010694-199611000-00006, 1996.
Cade-Menun, B. J., Navaratnam, J. A., and Walbridge, M. R.: Characterizing Dissolved and Particulate Phosphorus in Water with 31P Nuclear Magnetic Resonance Spectroscopy, Environ. Sci. Technol., 40, 7874–7880, https://doi.org/10.1021/es061843e, 2006.
Cade-Menun, B. J., Carter, M. R., James, D. C., and Liu, C. W.: Phosphorus forms and chemistry in the soil profile under long-term conservation tillage: a phosphorus-31 nuclear magnetic resonance study, J. Environ. Qual., 39, 1647–1656, 2010.
Caldeira, C. L., Ciminelli, V. S. T., and Osseo-Asare, K.: The role of carbonate ions in pyrite oxidation in aqueous systems, Geochim. Cosmochim. Acta, 74, 1777–1789, https://doi.org/10.1016/j.gca.2009.12.014, 2010.
Caraco, N. F., Cole, J. J., and Likens, G. E.: Evidence for sulphate-controlled phosphorus release from sediments of aquatic systems, Nature, 341, 316–318, https://doi.org/10.1038/341316a0, 1989.
Chorover, J. and Amistadi, M. K.: Reaction of forest floor organic matter at goethite, birnessite and smectite surfaces, Geochim. Cosmochim. Acta, 65, 95–109, https://doi.org/10.1016/S0016-7037(00)00511-1, 2001.
Chow-Fraser, P., Lougheed, V., Le Thiec, V., Crosbie, B., Simser, L., and Lord, J.: Long-term response of the biotic community to fluctuating water levels and changes in water quality in Cootes Paradise Marsh, a degraded coastal wetland of Lake Ontario, Wetl. Ecol. Manag., 6, 19–42, https://doi.org/10.1023/A:1008491520668, 1998.
Chun, C. L., Ochsner, U., Byappanahalli, M. N., Whitman, R. L., Tepp, W. H., Lin, G., Johnson, E. A., Peller, J., and Sadowsky, M. J.: Association of Toxin-Producing Clostridium botulinum with the Macroalga Cladophora in the Great Lakes, Environ. Sci. Technol., 47, 2587–2594, https://doi.org/10.1021/es304743m, 2013.
Cline, J. D.: Spectrophotometric determination of hydrogen sulfide in natural waters, Limnol. Oceanogr., 14, 454–458, https://doi.org/10.4319/lo.1969.14.3.0454, 1969.
Conley, D. J., Paerl, H. W., Howarth, R. W., Boesch, D. F., Seitzinger, S. P., Havens, K. E., Lancelot, C., and Likens, G. E.: ECOLOGY: Controlling Eutrophication: Nitrogen and Phosphorus, Science, 323, 1014–1015, https://doi.org/10.1126/science.1167755, 2009.
Corazza, C. and Tironi, S.: European Parliament supports ban of phosphates in consumer detergents (Press Release No. IP/11/1542), European Commission, Brussels, Belgium, 2011.
DeAngelis, K. M., Silver, W. L., Thompson, A. W., and Firestone, M. K.: Microbial communities acclimate to recurring changes in soil redox potential status, Environ. Microbiol., 12, 3137–3149, https://doi.org/10.1111/j.1462-2920.2010.02286.x, 2010.
Deng, S., Popova, I. E., Dick, L., and Dick, R.: Bench scale and microplate format assay of soil enzyme activities using spectroscopic and fluorometric approaches, Appl. Soil Ecol., 64, 84–90, https://doi.org/10.1016/j.apsoil.2012.11.002, 2013.
Doolette, A. L., Smernik, R. J., and Dougherty, W. J.: Spiking Improved Solution Phosphorus-31 Nuclear Magnetic Resonance Identification of Soil Phosphorus Compounds, Soil Sci. Soc. Am. J., 73, 919–927, https://doi.org/10.2136/sssaj2008.0192, 2009.
Dunn, C., Jones, T. G., Girard, A., and Freeman, C.: Methodologies for Extracellular Enzyme Assays from Wetland Soils, Wetlands, 34, 9–17, https://doi.org/10.1007/s13157-013-0475-0, 2013.
Einsele, W.: Über die Beziehungen des Eisenkreislaufs zum Phosphatkreislauf im eutrophen See, Arch. Hydrobiol., 29, 664–686, 1936.
Fisher, J. B., Lick, W. J., McCall, P. L., and Robbins, J. A.: Vertical mixing of lake sediments by tubificid oligochaetes, J. Geophys. Res., 85, 3997–4006, https://doi.org/10.1029/JC085iC07p03997, 1980.
Frohne, T., Rinklebe, J., Diaz-Bone, R. A., and Du Laing, G.: Controlled variation of redox conditions in a floodplain soil: Impact on metal mobilization and biomethylation of arsenic and antimony, Geoderma, 160, 414–424, https://doi.org/10.1016/j.geoderma.2010.10.012, 2011.
Furukawa, Y., Bentley, S. J., and Lavoie, D. L.: Bioirrigation modeling in experimental benthic mesocosms, J. Mar. Res., 59, 417–452, https://doi.org/10.1357/002224001762842262, 2001.
Gächter, R. and Meyer, J. S.: The role of microorganisms in mobilization and fixation of phosphorus in sediments, Hydrobiologia, 253, 103–121, https://doi.org/10.1007/BF00050731, 1993.
Gächter, R. and Müller, B.: Why the Phosphorus Retention of Lakes Does Not Necessarily Depend on the Oxygen Supply to Their Sediment Surface, Limnol. Oceanogr., 48, 929–933, https://doi.org/10.4319/lo.2003.48.2.0929, 2003.
Gächter, R., Meyer, J. S., and Mares, A.: Contribution of bacteria to release and fixation of phosphorus in lake sediments: Bacteria and P in sediments, Limnol. Oceanogr., 33, 1542–1558, https://doi.org/10.4319/lo.1988.33.6part2.1542, 1988.
Gardner, W. H.: Water Content, in: Methods of Soil Analysis: Physical and Mineralogical Methods, Agronomy, Soil Science Society of America, Madison, Wisconsin, 493–544, 1986.
Gehin, A., Greneche, J.-M., Tournassat, C., Brendle, J., Rancourt, D. G., and Charlet, L.: Reversible surface-sorption-induced electron-transfer oxidation of Fe(II) at reactive sites on a synthetic clay mineral, Geochim. Cosmochim. Acta, 71, 863–876, https://doi.org/10.1016/j.gca.2006.10.019, 2007.
Gerke, J.: Phosphate adsorption by humic/Fe-oxide mixtures aged at pH 4 and 7 and by poorly ordered Fe-oxide, Geoderma, 59, 279–288, https://doi.org/10.1016/0016-7061(93)90074-U, 1993.
Gerke, J.: Humic (Organic Matter)-Al(Fe)-Phosphate Complexes: An Underestimated Phosphate Form in Soils and Source of Plant-Available Phosphate, Soil Sci., 175, 417–425, https://doi.org/10.1097/SS.0b013e3181f1b4dd, 2010.
Gorham, E. and Boyce, F. M.: Influence of Lake Surface Area and Depth Upon Thermal Stratification and the Depth of the Summer Thermocline, J. Gt. Lakes Res., 15, 233–245, https://doi.org/10.1016/S0380-1330(89)71479-9, 1989.
Grybos, M., Davranche, M., Gruau, G., Petitjean, P., and Pedrot, M.: Increasing pH drives organic matter solubilization from wetland soils under reducing conditions, Geoderma, 154, 13–19, https://doi.org/10.1016/j.geoderma.2009.09.001, 2009.
Hansen, J. C., Cade-Menun, B. J., and Strawn, D. G.: Phosphorus Speciation in Manure-Amended Alkaline Soils, J. Environ. Qual., 33, 1521–1527, https://doi.org/10.2134/jeq2004.1521, 2004.
Hedley, M. J., White, R. E., and Nye, P. H.: Plant-Induced changes in the rhizosphere of rape (Brassica Napus Var.Emerald) seedlings: III. Changes in L value, soil phosphate fractions and phosphatase activity, New Phytol., 91, 45–56, https://doi.org/10.1111/j.1469-8137.1982.tb03291.x, 1982.
Hölker, F., Vanni, M. J., Kuiper, J. J., Meile, C., Grossart, H.-P., Stief, P., Adrian, R., Lorke, A., Dellwig, O., Brand, A., Hupfer, M., Mooij, W. M., Nützmann, G., and Lewandowski, J.: Tube-dwelling invertebrates: tiny ecosystem engineers have large effects in lake ecosystems, Ecol. Monogr., 85, 333–351, https://doi.org/10.1890/14-1160.1, 2015.
Hongve, D.: Cycling of iron, manganese, and phosphate in a meromictic lake, Limnol. Oceanogr., 42, 635–647, https://doi.org/10.4319/lo.1997.42.4.0635, 1997.
Hupfer, M., Gloess, S., and Grossart, H.: Polyphosphate-accumulating microorganisms in aquatic sediments, Aquat. Microb. Ecol., 47, 299–311, https://doi.org/10.3354/ame047299, 2007.
Hyacinthe, C. and Van Cappellen, P.: An authigenic iron phosphate phase in estuarine sediments: composition, formation and chemical reactivity, Mar. Chem., 91, 227–251, https://doi.org/10.1016/j.marchem.2004.04.006, 2004.
Jensen, D. L., Boddum, J. K., Tjell, J. C., and Christensen, T. H.: The solubility of rhodochrosite (MnCO3) and siderite (FeCO3) in anaerobic aquatic environments, Appl. Geochem., 17, 503–511, https://doi.org/10.1016/S0883-2927(01)00118-4, 2002.
Jensen, H. S., Kristensen, P., Jeppesen, E., and Skytthe, A.: Iron:phosphorus ratio in surface sediment as an indicator of phosphate release from aerobic sediments in shallow lakes, Hydrobiologia, 235–236, 731–743, https://doi.org/10.1007/BF00026261, 1992.
Jørgensen, C., Inglett, K. S., Jensen, H. S., Reitzel, K., and Reddy, K. R.: Characterization of biogenic phosphorus in outflow water from constructed wetlands, Geoderma, 257–258, 58–66, https://doi.org/10.1016/j.geoderma.2015.01.019, 2015.
Joshi, S. R., Kukkadapu, R. K., Burdige, D. J., Bowden, M. E., Sparks, D. L., and Jaisi, D. P.: Organic Matter Remineralization Predominates Phosphorus Cycling in the Mid-Bay Sediments in the Chesapeake Bay, Environ. Sci. Technol., 49, 5887–5896, https://doi.org/10.1021/es5059617, 2015.
Kang, H. and Freeman, C.: Phosphatase and arylsulphatase activities in wetland soils: annual variation and controlling factors, Soil Biol. Biochem., 31, 449–454, https://doi.org/10.1016/S0038-0717(98)00150-3, 1999.
Katsev, S., Tsandev, I., L'Heureux, I., and Rancourt, D. G.: Factors controlling long-term phosphorus efflux from lake sediments: Exploratory reactive-transport modeling, Chem. Geol., 234, 127–147, https://doi.org/10.1016/j.chemgeo.2006.05.001, 2006.
Kim, D.-K., Zhang, W., Rao, Y. R., Watson, S., Mugalingam, S., Labencki, T., Dittrich, M., Morley, A., and Arhonditsis, G. B.: Improving the representation of internal nutrient recycling with phosphorus mass balance models: A case study in the Bay of Quinte, Ontario, Canada. Ecol. Model., 256, 53–68, https://doi.org/10.1016/j.ecolmodel.2013.02.017, 2013.
Kizewski, F. R., Boyle, P., Hesterberg, D., and Martin, J. D.: Mixed Anion (Phosphate/Oxalate) Bonding to Iron(III) Materials, J. Am. Chem. Soc., 132, 2301–2308, https://doi.org/10.1021/ja908807b, 2010a.
Kizewski, F. R., Hesterberg, D., and Martin, J.: Phosphate sorption to organic matter/ferrihydrite systems as affected by aging time, 19th World Congress of Soil Science, Soil Solutions for a Changing World, Brisbane, Australia, 1–6 August, 2010b.
Klein, A. R., Baldwin, D. S., Singh, B., and Silvester, E. J.: Salinity-induced acidification in a wetland sediment through the displacement of clay-bound iron(II), Environ. Chem., 7, 413–421, https://doi.org/10.1071/EN10057, 2010.
Kortstee, G. J. J., Appeldoorn, K. J., Bonting, C. F. C., Niel, E. W. J., and Veen, H. W.: Biology of polyphosphate-accumulating bacteria involved in enhanced biological phosphorus removal, FEMS Microbiol. Rev., 15, 137–153, https://doi.org/10.1111/j.1574-6976.1994.tb00131.x, 1994.
Krom, M. D. and Berner, R. A.: The diagenesis of phosphorus in a nearshore marine sediment. Geochim. Cosmochim. Acta 45, 207–216, https://doi.org/10.1016/0016-7037(81)90164-2, 1981.
Lagauzère, S., Boyer, P., Stora, G., and Bonzom, J.-M.: Effects of uranium-contaminated sediments on the bioturbation activity of Chironomus riparius larvae (Insecta, Diptera) and Tubifex tubifex worms (Annelida, Tubificidae), Chemosphere, 76, 324–334, https://doi.org/10.1016/j.chemosphere.2009.03.062, 2009.
Li, W., Joshi, S. R., Hou, G., Burdige, D. J., Sparks, D. L., and Jaisi, D. P.: Characterizing Phosphorus Speciation of Chesapeake Bay Sediments Using Chemical Extraction, 31P NMR, and X-ray Absorption Fine Structure Spectroscopy, Environ. Sci. Technol., 49, 203–211, https://doi.org/10.1021/es504648d, 2015.
Liger, E., Charlet, L., and Van Cappellen, P.: Surface catalysis of uranium(VI) reduction by iron(II), Geochim. Cosmochim. Acta, 63, 2939–2955, https://doi.org/10.1016/S0016-7037(99)00265-3, 1999.
Mallin, M. A., McIver, M. R., Wells, H. A., Parsons, D. C., and Johnson, V. L.: Reversal of eutrophication following sewage treatment upgrades in the New River Estuary, North Carolina, Estuaries, 28, 750–760, https://doi.org/10.1007/BF02732912, 2005.
Manning, B. A.: Modeling Arsenate Competitive Adsorption on Kaolinite, Montmorillonite and Illite, Clays Clay Miner., 44, 609–623, https://doi.org/10.1346/CCMN.1996.0440504, 1996.
Matisoff, G. and Wang, X.: Solute transport in sediments by freshwater infaunal bioirrigators, Limnol. Oceanogr., 43, 1487–1499, https://doi.org/10.4319/lo.1998.43.7.1487, 1998.
Matisoff, G., Kaltenberg, E. M., Steely, R. L., Hummel, S. K., Seo, J., Gibbons, K. J., Bridgeman, T. B., Seo, Y., Behbahani, M., James, W. F., Johnson, L. T., Doan, P., Dittrich, M., Evans, M. A., and Chaffin, J. D.: Internal loading of phosphorus in western Lake Erie, J. Gt. Lakes Res., 42, 775–788, https://doi.org/10.1016/j.jglr.2016.04.004, 2016.
Mayer, T., Rosa, F., Mayer, R., and Charlton, M.: Relationship Between the Sediment Geochemistry and Phosphorus Fluxes in a Great Lakes Coastal Marsh, Cootes Paradise, ON, Canada, Water Air Soil Poll. Focus, 6, 495–503, https://doi.org/10.1007/s11267-006-9033-6, 2006.
McCall, P. L. and Fisher, J. B.: Effects of Tubificid Oligochaetes on Physical and Chemical Properties of Lake Erie Sediments, in: Aquatic Oligochaete Biology, edited by: Brinkhurst, R. and Cook, D., Springer US, 253–317, 1980.
McLaughlin, C. and Pike, K.: Muddied Waters: The Ongoing Challenge of Sediment and Phosphorus for Hamilton Harbour Remediation (2014 Towards Safe Harbour Report), Bay Area Restoration Council, Hamilton, Ontario, 2014.
Mikutta, C. and Kretzschmar, R.: Spectroscopic Evidence for Ternary Complex Formation between Arsenate and Ferric Iron Complexes of Humic Substances, Environ. Sci. Technol., 45, 9550–9557, https://doi.org/10.1021/es202300w, 2011.
Mortimer, C. H.: The exchange of dissolved substances between mud and water in lakes, J. Ecol., 29, 280–329, 1941.
Mortimer, C. H.: Chemical Exchanges Between Sediments and Water in the Great Lakes-Speculations on Probable Regulatory Mechanisms, Limnol. Oceanogr., 16, 387–404, https://doi.org/10.4319/lo.1971.16.2.0387, 1971.
Murphy, J. and Riley, J. P.: A modified single solution method for the determination of phosphate in natural waters, Anal. Chim. Acta, 27, 31–36, https://doi.org/10.1016/S0003-2670(00)88444-5, 1962.
National Water Quality Monitoring Council: 4500-P E, Phosphorus by Ascorbic Acid, Standard Methods for the Examination of Water and Wastewater, National Water Quality Monitoring Council, Washington, DC, USA, 1992.
Nikolausz, M., Kappelmeyer, U., Szekely, A., Rusznyak, A., Marialigeti, K., and Kastner, M.: Diurnal redox fluctuation and microbial activity in the rhizosphere of wetland plants, Eur. J. Soil Biol., 44, 324–333, https://doi.org/10.1016/j.ejsobi.2008.01.003, 2008.
Nürnberg, G. K.: Prediction of Phosphorus Release Rates from Total and Reductant-Soluble Phosphorus in Anoxic Lake Sediments, Can. J. Fish. Aquat. Sci., 45, 453–462, https://doi.org/10.1139/f88-054, 1988.
O'Connell, D. W., Jensen, M. M., Jakobsen, R., Thamdrup, B., Andersen, T. J., Kovacs, A., and Hansen, H. C. B.: Vivianite formation and its role in phosphorus retention in Lake Ørn, Denmark, Chem. Geol., 409, 42–53, https://doi.org/10.1016/j.chemgeo.2015.05.002, 2015.
Olsen, S. R. and Watanabe, F. S.: A Method to Determine a Phosphorus Adsorption Maximum of Soils as Measured by the Langmuir Isotherm1, Soil Sci. Soc. Am. J., 21, 144–149, https://doi.org/10.2136/sssaj1957.03615995002100020004x, 1957.
Olsen, S. R., Cole, C. V., Watanabe, F. S., and Dean, L. A.: Estimation of available phosphorus in soils by extraction with sodium bicarbonate, US Dep. Agric. Circ., 939, 1–19, 1954.
Painter, D., Hampton, L., and Simser, W. L.: Cootes Paradise Water Turbidity: Sources and Recommendations, NWRI Contribution Paper No. 91-15, Burlington, Ontario, p. 18, 1991.
Pallasser, R., Minasny, B., and McBratney, A. B.: Soil carbon determination by thermogravimetrics, PeerJ, 1, e6, https://doi.org/10.7717/peerj.6, 2013.
Paraskova, J. V., Jørgensen, C., Reitzel, K., Pettersson, J., Rydin, E., and Sjöberg, P. J. R.: Speciation of Inositol Phosphates in Lake Sediments by Ion-Exchange Chromatography Coupled with Mass Spectrometry, Inductively Coupled Plasma Atomic Emission Spectroscopy, and 31P NMR Spectroscopy, Anal. Chem., 87, 2672–2677, https://doi.org/10.1021/ac5033484, 2015.
Parkhurst, D. L. and Appelo, C. A. J.: User's guide to PHREEQC (Version 3): A computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculations, US Geological Survey Reston, VA, 1999.
Parsons, C. T., Couture, R.-M., Omoregie, E. O., Bardelli, F., Greneche, J.-M., Roman-Ross, G., and Charlet, L.: The impact of oscillating redox conditions: Arsenic immobilisation in contaminated calcareous floodplain soils, Environ. Pollut., 178, 254–263, https://doi.org/10.1016/j.envpol.2013.02.028, 2013.
Peiffer, S., Behrends, T., Hellige, K., Larese-Casanova, P., Wan, M., and Pollok, K.: Pyrite formation and mineral transformation pathways upon sulfidation of ferric hydroxides depend on mineral type and sulfide concentration, Chem. Geol., 400, 44–55, https://doi.org/10.1016/j.chemgeo.2015.01.023, 2015.
Pelegri, S. P. and Blackburn, T. H.: Effects of Tubifex tubifex (Oligochaeta: Tubificidae) on N-mineralization in freshwater sediments, measured with isotopes, Aquat. Microb. Ecol., 9, 289–294, 1995.
Penn, M. R., Auer, M. T., Doerr, S. M., Driscoll, C. T., Brooks, C. M., and Effler, S. W.: Seasonality in phosphorus release rates from the sediments of a hypereutrophic lake under a matrix of pH and redox conditions, Can. J. Fish. Aquat. Sci., 57, 1033–1041, https://doi.org/10.1139/f00-035, 2000.
Phillips, G., Jackson, R., Bennett, C., and Chilvers, A.: The importance of sediment phosphorus release in the restoration of very shallow lakes (The Norfolk Broads, England) and implications for biomanipulation, Hydrobiologia, 275–276, 445–456, https://doi.org/10.1007/BF00026733, 1994.
Pomeroy, R.: Auxiliary Pretreatment by Zinc Acetate in Sulfide Analyses, Anal. Chem., 26, 571–572, https://doi.org/10.1021/ac60087a047, 1954.
Pretty, J. N., Mason, C. F., Nedwell, D. B., Hine, R. E., Leaf, S., and Dils, R.: Environmental Costs of Freshwater Eutrophication in England and Wales, Environ. Sci. Technol., 37, 201–208, https://doi.org/10.1021/es020793k, 2003.
Reddy, K. R. and DeLaune, R. D.: Biogeochemistry of wetlands: science and applications, CRC Press, Boca Raton, 2008.
Reddy, K. R., Newman, S., Osborne, T. Z., White, J. R., and Fitz, H. C.: Phosphorous Cycling in the Greater Everglades Ecosystem: Legacy Phosphorous Implications for Management and Restoration, Crit. Rev. Environ. Sci. Technol., 41, 149–186, https://doi.org/10.1080/10643389.2010.530932, 2011.
Reitzel, K., Ahlgren, J., DeBrabandere, H., Waldebäck, M., Gogoll, A., Tranvik, L., and Rydin, E.: Degradation rates of organic phosphorus in lake sediment, Biogeochemistry, 82, 15–28, https://doi.org/10.1007/s10533-006-9049-z, 2007.
Rezanezhad, F., Couture, R.-M., Kovac, R., O'Connell, D., and Van Cappellen, P.: Water table fluctuations and soil biogeochemistry: An experimental approach using an automated soil column system, J. Hydrol., 509, 245–256, https://doi.org/10.1016/j.jhydrol.2013.11.036, 2014.
Rickard, D. and Morse, J. W.: Acid volatile sulfide (AVS), Mar. Chem., 97, 141–197, https://doi.org/10.1016/j.marchem.2005.08.004, 2005.
Routledge, I.: City of Hamilton: King Street (Dundas) Wastewater Treatment Plant, 2011 Annual Report (Annual Report No. Works Number 120001372), The City of Hamilton, Environment and Sustainable Infrastructure Division, Hamilton, Ontario, 2012.
Ruttenberg, K. C.: Development of a sequential extraction method for different forms of phosphorus in marine sediments, Limnol. Oceanogr., 37, 1460–1482, https://doi.org/10.4319/lo.1992.37.7.1460, 1992.
Sannigrahi, P. and Ingall, E.: Polyphosphates as a source of enhanced P fluxes in marine sediments overlain by anoxic waters: Evidence from 31P NMR, Geochem. Trans., 6, 52, https://doi.org/10.1063/1.1946447, 2005.
Semkin, R. G., McLarty, A. W., and Craig, D.: A water quality study of Cootes Paradise, Ontario Ministry of Environment, West Central Region, Toronto, Ontario, 1976.
Sharma, P., Ofner, J., and Kappler, A.: Formation of Binary and Ternary Colloids and Dissolved Complexes of Organic Matter, Fe and As, Environ. Sci. Technol., 44, 4479–4485, https://doi.org/10.1021/es100066s, 2010.
Sharpley, A. N., Chapra, S. C., Wedepohl, R., Sims, J. T., Daniel, T. C., and Reddy, K. R.: Managing Agricultural Phosphorus for Protection of Surface Waters: Issues and Options, J. Environ. Qual., 23, 437–451, https://doi.org/10.2134/jeq1994.00472425002300030006x, 1994.
Sibanda, H. M. and Young, S. D.: Competitive adsorption of humus acids and phosphate on goethite, gibbsite and two tropical soils, J. Soil Sci., 37, 197–204, https://doi.org/10.1111/j.1365-2389.1986.tb00020.x, 1986.
Sirová, D., Rejmánková, E., Carlson, E., and Vrba, J.: Current standard assays using artificial substrates overestimate phosphodiesterase activity, Soil Biol. Biochem., 56, 75–79, https://doi.org/10.1016/j.soilbio.2012.02.008, 2013.
Smith, V. H. and Schindler, D. W.: Eutrophication science: where do we go from here?, Trends Ecol. Evol., 24, 201–207, https://doi.org/10.1016/j.tree.2008.11.009, 2009.
Søndergaard, M., Jensen, J. P., and Jeppesen, E.: Role of sediment and internal loading of phosphorus in shallow lakes, Hydrobiologia, 506–509, 135–145, https://doi.org/10.1023/B:HYDR.0000008611.12704.dd, 2003.
Song, K.-Y., Zoh, K.-D., and Kang, H.: Release of phosphate in a wetland by changes in hydrological regime, Sci. Total Environ., 380, 13–18, https://doi.org/10.1016/j.scitotenv.2006.11.035, 2007.
Stookey, L. L.: Ferrozine – a new spectrophotometric reagent for iron, Anal. Chem., 42, 779–781, https://doi.org/10.1021/ac60289a016, 1970.
Stumm, W. and Morgan, J. J.: Aquatic Chemistry, 3rd Edn., John Wiley & Sons, New York, 1996.
Theysmeyer, T., Smith, T., and Simser, L.: West Pond 1999 Study, Royal Botanical Gardens, Science Department, 1999.
Thibault, P.-J., Rancourt, D. G., Evans, R. J., and Dutrizac, J. E.: Mineralogical confirmation of a near-P : Fe = 1 : 2 limiting stoichiometric ratio in colloidal P-bearing ferrihydrite-like hydrous ferric oxide, Geochim. Cosmochim. Acta, 73, 364–376, https://doi.org/10.1016/j.gca.2008.10.031, 2009.
Thompson, A., Chadwick, O. A., Rancourt, D. G., and Chorover, J.: Iron-oxide crystallinity increases during soil redox oscillations, Geochim. Cosmochim. Acta, 70, 1710–1727, https://doi.org/10.1016/j.gca.2005.12.005, 2006.
Turner, B. L., Cade-Menun, B. J., and Westermann, D. T.: Organic phosphorus composition and potential bioavailability in semi-arid arable soils of the Western United States, Soil Sci. Soc. Am. J., 67, 1168–1179, 2003a.
Turner, B. L., Mahieu, N., and Condron, L.: Phosphorus-31 Nuclear Magnetic Resonance Spectral Assignments of Phosphorus Compounds in Soil NaOH–EDTA Extracts, Soil Sci. Soc. Am. J., 67, 497–510, https://doi.org/10.2136/sssaj2003.4970, 2003b.
US EPA: Field Sampling Guidance Document: Sediment Sampling (No. #1215), US Environmental Protection Agency, Region 9 Laboratory, Richmond California, September 1999.
Vetter, Y. A., Deming, J. W., Jumars, P. A., and Krieger-Brockett, B. B.: A Predictive Model of Bacterial Foraging by Means of Freely Released Extracellular Enzymes, Microb. Ecol., 36, 75–92, https://doi.org/10.1007/s002489900095, 1998.
Viollier, E., Inglett, P., Hunter, K., Roychoudhury, A., and Van Cappellen, P.: The ferrozine method revisited: Fe(II)/Fe(III) determination in natural waters, Appl. Geochem., 15, 785–790, https://doi.org/10.1016/S0883-2927(99)00097-9, 2000.
Weishaar, J. L., Aiken, G. R., Bergamaschi, B. A., Fram, M. S., Fujii, R., and Mopper, K.: Evaluation of Specific Ultraviolet Absorbance as an Indicator of the Chemical Composition and Reactivity of Dissolved Organic Carbon, Environ. Sci. Technol., 37, 4702–4708, https://doi.org/10.1021/es030360x, 2003.
Wentzel, M. C., Lötter, L. H., Ekama, G. A., Loewenthal, R. E., and Marais, G. v. R.: Evaluation of Biochemical Models for Biological Excess Phosphorus Removal, Water Sci. Technol., 23, 567–576, 1991.
Yamamoto-Ikemoto, R., Matsui, S., and Komori, T.: Ecological interactions among denitrification, poly-P accumulation, sulfate reduction, and filamentous sulfur bacteria in activated sludge, Water Sci. Technol., 30, 201–210, 1994.
Short summary
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.
Phosphorus (P) has accumulated in sediments due to past human activities. The re-release of this...
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