Articles | Volume 17, issue 18
https://doi.org/10.5194/bg-17-4571-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-4571-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
18 Sep 2020
Research article |
| 18 Sep 2020
| 18 Sep 2020
Mineralization of organic matter in boreal lake sediments: rates, pathways, and nature of the fermenting substrates
INRS-ETE, Université du Québec, 490 rue de la Couronne,
Québec (QC), Canada G1K 9A9
Geotop, Interuniversity research and training centre in geosciences, 201 Président-Kennedy Ave., Montréal (QC), Canada H2X 3Y7
Norwegian Institute for Water Research (NIVA),
Gaustadalléen 21, 0349 Oslo, Norway
Yves Gélinas
Geotop, Interuniversity research and training centre in geosciences, 201 Président-Kennedy Ave., Montréal (QC), Canada H2X 3Y7
Department of Chemistry and Biochemistry, Concordia University, 7141 Sherbrooke Street West, Montreal (QC), Canada H4B 1R6
André Tessier
INRS-ETE, Université du Québec, 490 rue de la Couronne,
Québec (QC), Canada G1K 9A9
Charles Gobeil
INRS-ETE, Université du Québec, 490 rue de la Couronne,
Québec (QC), Canada G1K 9A9
Geotop, Interuniversity research and training centre in geosciences, 201 Président-Kennedy Ave., Montréal (QC), Canada H2X 3Y7
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François Clayer, Jan Erik Thrane, Kuria Ndungu, Andrew King, Peter Dörsch, and Thomas Rohrlack
Biogeosciences, 21, 1903–1921, https://doi.org/10.5194/bg-21-1903-2024, https://doi.org/10.5194/bg-21-1903-2024, 2024
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Determination of dissolved greenhouse gas (GHG) in freshwater allows us to estimate GHG fluxes. Mercuric chloride (HgCl2) is used to preserve water samples prior to GHG analysis despite its environmental and health impacts and interferences with water chemistry in freshwater. Here, we tested the effects of HgCl2, two substitutes and storage time on GHG in water from two boreal lakes. Preservation with HgCl2 caused overestimation of CO2 concentration with consequences for GHG flux estimation.
François Clayer, Leah Jackson-Blake, Daniel Mercado-Bettín, Muhammed Shikhani, Andrew French, Tadhg Moore, James Sample, Magnus Norling, Maria-Dolores Frias, Sixto Herrera, Elvira de Eyto, Eleanor Jennings, Karsten Rinke, Leon van der Linden, and Rafael Marcé
Hydrol. Earth Syst. Sci., 27, 1361–1381, https://doi.org/10.5194/hess-27-1361-2023, https://doi.org/10.5194/hess-27-1361-2023, 2023
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We assessed the predictive skill of forecasting tools over the next season for water discharge and lake temperature. Tools were forced with seasonal weather predictions; however, most of the prediction skill originates from legacy effects and not from seasonal weather predictions. Yet, when skills from seasonal weather predictions are present, additional skill comes from interaction effects. Skilful lake seasonal predictions require better weather predictions and realistic antecedent conditions.
Leah A. Jackson-Blake, François Clayer, Sigrid Haande, James E. Sample, and S. Jannicke Moe
Hydrol. Earth Syst. Sci., 26, 3103–3124, https://doi.org/10.5194/hess-26-3103-2022, https://doi.org/10.5194/hess-26-3103-2022, 2022
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We develop a Gaussian Bayesian network (GBN) for seasonal forecasting of lake water quality and algal bloom risk in a nutrient-impacted lake in southern Norway. Bayesian networks are powerful tools for environmental modelling but are almost exclusively discrete. We demonstrate that a continuous GBN is a promising alternative approach. Predictive performance of the GBN was similar or improved compared to a discrete network, and it was substantially less time-consuming and subjective to develop.
Leah A. Jackson-Blake, François Clayer, Elvira de Eyto, Andrew S. French, María Dolores Frías, Daniel Mercado-Bettín, Tadhg Moore, Laura Puértolas, Russell Poole, Karsten Rinke, Muhammed Shikhani, Leon van der Linden, and Rafael Marcé
Hydrol. Earth Syst. Sci., 26, 1389–1406, https://doi.org/10.5194/hess-26-1389-2022, https://doi.org/10.5194/hess-26-1389-2022, 2022
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We explore, together with stakeholders, whether seasonal forecasting of water quantity, quality, and ecology can help support water management at five case study sites, primarily in Europe. Reliable forecasting, a season in advance, has huge potential to improve decision-making. However, managers were reluctant to use the forecasts operationally. Key barriers were uncertainty and often poor historic performance. The importance of practical hands-on experience was also highlighted.
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Determination of dissolved greenhouse gas (GHG) in freshwater allows us to estimate GHG fluxes. Mercuric chloride (HgCl2) is used to preserve water samples prior to GHG analysis despite its environmental and health impacts and interferences with water chemistry in freshwater. Here, we tested the effects of HgCl2, two substitutes and storage time on GHG in water from two boreal lakes. Preservation with HgCl2 caused overestimation of CO2 concentration with consequences for GHG flux estimation.
François Clayer, Leah Jackson-Blake, Daniel Mercado-Bettín, Muhammed Shikhani, Andrew French, Tadhg Moore, James Sample, Magnus Norling, Maria-Dolores Frias, Sixto Herrera, Elvira de Eyto, Eleanor Jennings, Karsten Rinke, Leon van der Linden, and Rafael Marcé
Hydrol. Earth Syst. Sci., 27, 1361–1381, https://doi.org/10.5194/hess-27-1361-2023, https://doi.org/10.5194/hess-27-1361-2023, 2023
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Leah A. Jackson-Blake, François Clayer, Sigrid Haande, James E. Sample, and S. Jannicke Moe
Hydrol. Earth Syst. Sci., 26, 3103–3124, https://doi.org/10.5194/hess-26-3103-2022, https://doi.org/10.5194/hess-26-3103-2022, 2022
Short summary
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We develop a Gaussian Bayesian network (GBN) for seasonal forecasting of lake water quality and algal bloom risk in a nutrient-impacted lake in southern Norway. Bayesian networks are powerful tools for environmental modelling but are almost exclusively discrete. We demonstrate that a continuous GBN is a promising alternative approach. Predictive performance of the GBN was similar or improved compared to a discrete network, and it was substantially less time-consuming and subjective to develop.
Leah A. Jackson-Blake, François Clayer, Elvira de Eyto, Andrew S. French, María Dolores Frías, Daniel Mercado-Bettín, Tadhg Moore, Laura Puértolas, Russell Poole, Karsten Rinke, Muhammed Shikhani, Leon van der Linden, and Rafael Marcé
Hydrol. Earth Syst. Sci., 26, 1389–1406, https://doi.org/10.5194/hess-26-1389-2022, https://doi.org/10.5194/hess-26-1389-2022, 2022
Short summary
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We explore, together with stakeholders, whether seasonal forecasting of water quantity, quality, and ecology can help support water management at five case study sites, primarily in Europe. Reliable forecasting, a season in advance, has huge potential to improve decision-making. However, managers were reluctant to use the forecasts operationally. Key barriers were uncertainty and often poor historic performance. The importance of practical hands-on experience was also highlighted.
K. Lalonde, A. V. Vähätalo, and Y. Gélinas
Biogeosciences, 11, 3707–3719, https://doi.org/10.5194/bg-11-3707-2014, https://doi.org/10.5194/bg-11-3707-2014, 2014
M. Alkhatib, P. A. del Giorgio, Y. Gelinas, and M. F. Lehmann
Biogeosciences, 10, 7609–7622, https://doi.org/10.5194/bg-10-7609-2013, https://doi.org/10.5194/bg-10-7609-2013, 2013
H. Wu, C. Peng, M. Lucotte, N. Soumis, Y. Gélinas, É. Duchemin, J.-B. Plouhinec, A. Ouellet, and Z. Guo
Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmdd-6-3509-2013, https://doi.org/10.5194/gmdd-6-3509-2013, 2013
Revised manuscript not accepted
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Sigrid Trier Kjær, Sebastian Westermann, Nora Nedkvitne, and Peter Dörsch
EGUsphere, https://doi.org/10.5194/egusphere-2024-562, https://doi.org/10.5194/egusphere-2024-562, 2024
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Permafrost peatlands are thawing due to climate change, releasing large quantities of carbon that degrades upon thawing and is released as CO2, CH4, or dissolved organic carbon (DOC). We incubated thawed Norwegian permafrost peat plateaus and thermokarst pond sediment found next to permafrost for up to 350 days to measure carbon loss. CO2 production was largest initially, while CH4 production increased over time. The largest carbon loss was measured at the top of the peat plateau core as DOC.
Justine Trémeau, Beñat Olascoaga, Leif Backman, Esko Karvinen, Henriikka Vekuri, and Liisa Kulmala
Biogeosciences, 21, 949–972, https://doi.org/10.5194/bg-21-949-2024, https://doi.org/10.5194/bg-21-949-2024, 2024
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We studied urban lawns and meadows in the Helsinki metropolitan area, Finland. We found that meadows are more resistant to drought events but that they do not increase carbon sequestration compared with lawns. Moreover, the transformation from lawns to meadows did not demonstrate any negative climate effects in terms of greenhouse gas emissions. Even though social and economic aspects also steer urban development, these results can guide planning to consider carbon-smart options.
Ralf C. H. Aben, Daniel van de Craats, Jim Boonman, Stijn H. Peeters, Bart Vriend, Coline C. F. Boonman, Ype van der Velde, Gilles Erkens, and Merit van den Berg
EGUsphere, https://doi.org/10.5194/egusphere-2024-403, https://doi.org/10.5194/egusphere-2024-403, 2024
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Drained peatlands cause high CO2 emissions. Raising the groundwater table can lower emissions. We used automated flux chamber measurements on 12 sites for up to 4 years and found a linear association between annual water table depth and CO2 emission. We also found that the average amount of carbon above the water table better predicted annual CO2 emission than water table depth and that water infiltration systems—used to effectively raise the water table—can be used to mitigate CO2 emissions.
Guantao Chen, Edzo Veldkamp, Muhammad Damris, Bambang Irawan, Aiyen Tjoa, and Marife D. Corre
Biogeosciences, 21, 513–529, https://doi.org/10.5194/bg-21-513-2024, https://doi.org/10.5194/bg-21-513-2024, 2024
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We established an oil palm management experiment in a large-scale oil palm plantation in Jambi, Indonesia. We recorded oil palm fruit yield and measured soil CO2, N2O, and CH4 fluxes. After 4 years of treatment, compared with conventional fertilization with herbicide weeding, reduced fertilization with mechanical weeding did not reduce yield and soil greenhouse gas emissions, which highlights the legacy effects of over a decade of conventional management prior to the start of the experiment.
Elizabeth Gachibu Wangari, Ricky Mwangada Mwanake, Tobias Houska, David Kraus, Gretchen Maria Gettel, Ralf Kiese, Lutz Breuer, and Klaus Butterbach-Bahl
Biogeosciences, 20, 5029–5067, https://doi.org/10.5194/bg-20-5029-2023, https://doi.org/10.5194/bg-20-5029-2023, 2023
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Agricultural landscapes act as sinks or sources of the greenhouse gases (GHGs) CO2, CH4, or N2O. Various physicochemical and biological processes control the fluxes of these GHGs between ecosystems and the atmosphere. Therefore, fluxes depend on environmental conditions such as soil moisture, soil temperature, or soil parameters, which result in large spatial and temporal variations of GHG fluxes. Here, we describe an example of how this variation may be studied and analyzed.
Laurie C. Menviel, Paul Spence, Andrew E. Kiss, Matthew A. Chamberlain, Hakase Hayashida, Matthew H. England, and Darryn Waugh
Biogeosciences, 20, 4413–4431, https://doi.org/10.5194/bg-20-4413-2023, https://doi.org/10.5194/bg-20-4413-2023, 2023
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As the ocean absorbs 25% of the anthropogenic emissions of carbon, it is important to understand the impact of climate change on the flux of carbon between the ocean and the atmosphere. Here, we use a very high-resolution ocean, sea-ice, carbon cycle model to show that the capability of the Southern Ocean to uptake CO2 has decreased over the last 40 years due to a strengthening and poleward shift of the southern hemispheric westerlies. This trend is expected to continue over the coming century.
Petr Znachor, Jiří Nedoma, Vojtech Kolar, and Anna Matoušů
Biogeosciences, 20, 4273–4288, https://doi.org/10.5194/bg-20-4273-2023, https://doi.org/10.5194/bg-20-4273-2023, 2023
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We conducted intensive spatial sampling of the hypertrophic fishpond to better understand the spatial dynamics of methane fluxes and environmental heterogeneity in fishponds. The diffusive fluxes of methane accounted for only a minor fraction of the total fluxes and both varied pronouncedly within the pond and over the studied summer season. This could be explained only by the water depth. Wind substantially affected temperature, oxygen and chlorophyll a distribution in the pond.
Sofie Sjögersten, Martha Ledger, Matthias Siewert, Betsabé de la Barreda-Bautista, Andrew Sowter, David Gee, Giles Foody, and Doreen S. Boyd
Biogeosciences, 20, 4221–4239, https://doi.org/10.5194/bg-20-4221-2023, https://doi.org/10.5194/bg-20-4221-2023, 2023
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Permafrost thaw in Arctic regions is increasing methane emissions, but quantification is difficult given the large and remote areas impacted. We show that UAV data together with satellite data can be used to extrapolate emissions across the wider landscape as well as detect areas at risk of higher emissions. A transition of currently degrading areas to fen type vegetation can increase emission by several orders of magnitude, highlighting the importance of quantifying areas at risk.
Cole G. Brachmann, Tage Vowles, Riikka Rinnan, Mats P. Björkman, Anna Ekberg, and Robert G. Björk
Biogeosciences, 20, 4069–4086, https://doi.org/10.5194/bg-20-4069-2023, https://doi.org/10.5194/bg-20-4069-2023, 2023
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Herbivores change plant communities through grazing, altering the amount of CO2 and plant-specific chemicals (termed VOCs) emitted. We tested this effect by excluding herbivores and studying the CO2 and VOC emissions. Herbivores reduced CO2 emissions from a meadow community and altered VOC composition; however, community type had the strongest effect on the amount of CO2 and VOCs released. Herbivores can mediate greenhouse gas emissions, but the effect is marginal and community dependent.
Ole Lessmann, Jorge Encinas Fernández, Karla Martínez-Cruz, and Frank Peeters
Biogeosciences, 20, 4057–4068, https://doi.org/10.5194/bg-20-4057-2023, https://doi.org/10.5194/bg-20-4057-2023, 2023
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Based on a large dataset of seasonally resolved methane (CH4) pore water concentrations in a reservoir's sediment, we assess the significance of CH4 emissions due to reservoir flushing. In the studied reservoir, CH4 emissions caused by one flushing operation can represent 7 %–14 % of the annual CH4 emissions and depend on the timing of the flushing operation. In reservoirs with high sediment loadings, regular flushing may substantially contribute to the overall CH4 emissions.
Matti Räsänen, Risto Vesala, Petri Rönnholm, Laura Arppe, Petra Manninen, Markus Jylhä, Jouko Rikkinen, Petri Pellikka, and Janne Rinne
Biogeosciences, 20, 4029–4042, https://doi.org/10.5194/bg-20-4029-2023, https://doi.org/10.5194/bg-20-4029-2023, 2023
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Fungus-growing termites recycle large parts of dead plant material in African savannas and are significant sources of greenhouse gases. We measured CO2 and CH4 fluxes from their mounds and surrounding soils in open and closed habitats. The fluxes scale with mound volume. The results show that emissions from mounds of fungus-growing termites are more stable than those from other termites. The soil fluxes around the mound are affected by the termite colonies at up to 2 m distance from the mound.
Tim René de Groot, Anne Margriet Mol, Katherine Mesdag, Pierre Ramond, Rachel Ndhlovu, Julia Catherine Engelmann, Thomas Röckmann, and Helge Niemann
Biogeosciences, 20, 3857–3872, https://doi.org/10.5194/bg-20-3857-2023, https://doi.org/10.5194/bg-20-3857-2023, 2023
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This study investigates methane dynamics in the Wadden Sea. Our measurements revealed distinct variations triggered by seasonality and tidal forcing. The methane budget was higher in warmer seasons but surprisingly high in colder seasons. Methane dynamics were amplified during low tides, flushing the majority of methane into the North Sea or releasing it to the atmosphere. Methanotrophic activity was also elevated during low tide but mitigated only a small fraction of the methane efflux.
Frederic Thalasso, Brenda Riquelme, Andrés Gómez, Roy Mackenzie, Francisco Javier Aguirre, Jorge Hoyos-Santillan, Ricardo Rozzi, and Armando Sepulveda-Jauregui
Biogeosciences, 20, 3737–3749, https://doi.org/10.5194/bg-20-3737-2023, https://doi.org/10.5194/bg-20-3737-2023, 2023
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A robust skirt-chamber design to capture and quantify greenhouse gas emissions from peatlands is presented. Compared to standard methods, this design improves the spatial resolution of field studies in remote locations while minimizing intrusion.
Gesa Schulz, Tina Sanders, Yoana G. Voynova, Hermann W. Bange, and Kirstin Dähnke
Biogeosciences, 20, 3229–3247, https://doi.org/10.5194/bg-20-3229-2023, https://doi.org/10.5194/bg-20-3229-2023, 2023
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Nitrous oxide (N2O) is an important greenhouse gas. However, N2O emissions from estuaries underlie significant uncertainties due to limited data availability and high spatiotemporal variability. We found the Elbe Estuary (Germany) to be a year-round source of N2O, with the highest emissions in winter along with high nitrogen loads. However, in spring and summer, N2O emissions did not decrease alongside lower nitrogen loads because organic matter fueled in situ N2O production along the estuary.
Alex Mavrovic, Oliver Sonnentag, Juha Lemmetyinen, Jennifer L. Baltzer, Christophe Kinnard, and Alexandre Roy
Biogeosciences, 20, 2941–2970, https://doi.org/10.5194/bg-20-2941-2023, https://doi.org/10.5194/bg-20-2941-2023, 2023
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This review supports the integration of microwave spaceborne information into carbon cycle science for Arctic–boreal regions. The microwave data record spans multiple decades with frequent global observations of soil moisture and temperature, surface freeze–thaw cycles, vegetation water storage, snowpack properties, and land cover. This record holds substantial unexploited potential to better understand carbon cycle processes.
Zoé Rehder, Thomas Kleinen, Lars Kutzbach, Victor Stepanenko, Moritz Langer, and Victor Brovkin
Biogeosciences, 20, 2837–2855, https://doi.org/10.5194/bg-20-2837-2023, https://doi.org/10.5194/bg-20-2837-2023, 2023
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We use a new model to investigate how methane emissions from Arctic ponds change with warming. We find that emissions increase substantially. Under annual temperatures 5 °C above present temperatures, pond methane emissions are more than 3 times higher than now. Most of this increase is caused by an increase in plant productivity as plants provide the substrate microbes used to produce methane. We conclude that vegetation changes need to be included in predictions of pond methane emissions.
Julian Koch, Lars Elsgaard, Mogens H. Greve, Steen Gyldenkærne, Cecilie Hermansen, Gregor Levin, Shubiao Wu, and Simon Stisen
Biogeosciences, 20, 2387–2403, https://doi.org/10.5194/bg-20-2387-2023, https://doi.org/10.5194/bg-20-2387-2023, 2023
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Utilizing peatlands for agriculture leads to large emissions of greenhouse gases worldwide. The emissions are triggered by lowering the water table, which is a necessary step in order to make peatlands arable. Many countries aim at reducing their emissions by restoring peatlands, which can be achieved by stopping agricultural activities and thereby raising the water table. We estimate a total emission of 2.6 Mt CO2-eq for organic-rich peatlands in Denmark and a potential reduction of 77 %.
Mélissa Laurent, Matthias Fuchs, Tanja Herbst, Alexandra Runge, Susanne Liebner, and Claire C. Treat
Biogeosciences, 20, 2049–2064, https://doi.org/10.5194/bg-20-2049-2023, https://doi.org/10.5194/bg-20-2049-2023, 2023
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In this study we investigated the effect of different parameters (temperature, landscape position) on the production of greenhouse gases during a 1-year permafrost thaw experiment. For very similar carbon and nitrogen contents, our results show a strong heterogeneity in CH4 production, as well as in microbial abundance. According to our study, these differences are mainly due to the landscape position and the hydrological conditions established as a result of the topography.
Michael Moubarak, Seeta Sistla, Stefano Potter, Susan M. Natali, and Brendan M. Rogers
Biogeosciences, 20, 1537–1557, https://doi.org/10.5194/bg-20-1537-2023, https://doi.org/10.5194/bg-20-1537-2023, 2023
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Tundra wildfires are increasing in frequency and severity with climate change. We show using a combination of field measurements and computational modeling that tundra wildfires result in a positive feedback to climate change by emitting significant amounts of long-lived greenhouse gasses. With these effects, attention to tundra fires is necessary for mitigating climate change.
Hanna I. Campen, Damian L. Arévalo-Martínez, and Hermann W. Bange
Biogeosciences, 20, 1371–1379, https://doi.org/10.5194/bg-20-1371-2023, https://doi.org/10.5194/bg-20-1371-2023, 2023
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Carbon monoxide (CO) is a climate-relevant trace gas emitted from the ocean. However, oceanic CO cycling is understudied. Results from incubation experiments conducted in the Fram Strait (Arctic Ocean) indicated that (i) pH did not affect CO cycling and (ii) enhanced CO production and consumption were positively correlated with coloured dissolved organic matter and nitrate concentrations. This suggests microbial CO uptake to be the driving factor for CO cycling in the Arctic Ocean.
Yihong Zhu, Ruihua Liu, Huai Zhang, Shaoda Liu, Zhengfeng Zhang, Fei-Hai Yu, and Timothy G. Gregoire
Biogeosciences, 20, 1357–1370, https://doi.org/10.5194/bg-20-1357-2023, https://doi.org/10.5194/bg-20-1357-2023, 2023
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With global warming, the risk of flooding is rising, but the response of the carbon cycle of aquatic and associated riparian systems
to flooding is still unclear. Based on the data collected in the Lijiang, we found that flooding would lead to significant carbon emissions of fluvial areas and riparian areas during flooding, but carbon capture may happen after flooding. In the riparian areas, the surviving vegetation, especially clonal plants, played a vital role in this transformation.
Lauri Heiskanen, Juha-Pekka Tuovinen, Henriikka Vekuri, Aleksi Räsänen, Tarmo Virtanen, Sari Juutinen, Annalea Lohila, Juha Mikola, and Mika Aurela
Biogeosciences, 20, 545–572, https://doi.org/10.5194/bg-20-545-2023, https://doi.org/10.5194/bg-20-545-2023, 2023
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We measured and modelled the CO2 and CH4 fluxes of the terrestrial and aquatic ecosystems of the subarctic landscape for 2 years. The landscape was an annual CO2 sink and a CH4 source. The forest had the largest contribution to the landscape-level CO2 sink and the peatland to the CH4 emissions. The lakes released 24 % of the annual net C uptake of the landscape back to the atmosphere. The C fluxes were affected most by the rainy peak growing season of 2017 and the drought event in July 2018.
Artem G. Lim, Ivan V. Krickov, Sergey N. Vorobyev, Mikhail A. Korets, Sergey Kopysov, Liudmila S. Shirokova, Jan Karlsson, and Oleg S. Pokrovsky
Biogeosciences, 19, 5859–5877, https://doi.org/10.5194/bg-19-5859-2022, https://doi.org/10.5194/bg-19-5859-2022, 2022
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In order to quantify C transport and emission and main environmental factors controlling the C cycle in Siberian rivers, we investigated the largest tributary of the Ob River, the Ket River basin, by measuring spatial and seasonal variations in carbon CO2 and CH4 concentrations and emissions together with hydrochemical analyses. The obtained results are useful for large-scale modeling of C emission and export fluxes from permafrost-free boreal rivers of an underrepresented region of the world.
Robert J. Parker, Chris Wilson, Edward Comyn-Platt, Garry Hayman, Toby R. Marthews, A. Anthony Bloom, Mark F. Lunt, Nicola Gedney, Simon J. Dadson, Joe McNorton, Neil Humpage, Hartmut Boesch, Martyn P. Chipperfield, Paul I. Palmer, and Dai Yamazaki
Biogeosciences, 19, 5779–5805, https://doi.org/10.5194/bg-19-5779-2022, https://doi.org/10.5194/bg-19-5779-2022, 2022
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Wetlands are the largest natural source of methane, one of the most important climate gases. The JULES land surface model simulates these emissions. We use satellite data to evaluate how well JULES reproduces the methane seasonal cycle over different tropical wetlands. It performs well for most regions; however, it struggles for some African wetlands influenced heavily by river flooding. We explain the reasons for these deficiencies and highlight how future development will improve these areas.
Saúl Edgardo Martínez Castellón, José Henrique Cattanio, José Francisco Berrêdo, Marcelo Rollnic, Maria de Lourdes Ruivo, and Carlos Noriega
Biogeosciences, 19, 5483–5497, https://doi.org/10.5194/bg-19-5483-2022, https://doi.org/10.5194/bg-19-5483-2022, 2022
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We seek to understand the influence of climatic seasonality and microtopography on CO2 and CH4 fluxes in an Amazonian mangrove. Topography and seasonality had a contrasting influence when comparing the two gas fluxes: CO2 fluxes were greater in high topography in the dry period, and CH4 fluxes were greater in the rainy season in low topography. Only CO2 fluxes were correlated with soil organic matter, the proportion of carbon and nitrogen, and redox potential.
Matthias Koschorreck, Klaus Holger Knorr, and Lelaina Teichert
Biogeosciences, 19, 5221–5236, https://doi.org/10.5194/bg-19-5221-2022, https://doi.org/10.5194/bg-19-5221-2022, 2022
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At low water levels, parts of the bottom of rivers fall dry. These beaches or mudflats emit the greenhouse gas carbon dioxide (CO2) to the atmosphere. We found that those emissions are caused by microbial reactions in the sediment and that they change with time. Emissions were influenced by many factors like temperature, water level, rain, plants, and light.
Wantong Zhang, Zhengyi Hu, Joachim Audet, Thomas A. Davidson, Enze Kang, Xiaoming Kang, Yong Li, Xiaodong Zhang, and Jinzhi Wang
Biogeosciences, 19, 5187–5197, https://doi.org/10.5194/bg-19-5187-2022, https://doi.org/10.5194/bg-19-5187-2022, 2022
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This work focused on the CH4 and N2O emissions from alpine peatlands in response to the interactive effects of altered water table levels and increased nitrogen deposition. Across the 2-year mesocosm experiment, nitrogen deposition showed nonlinear effects on CH4 emissions and linear effects on N2O emissions, and these N effects were associated with the water table levels. Our results imply the future scenario of strengthened CH4 and N2O emissions from an alpine peatland.
Karel Castro-Morales, Anna Canning, Sophie Arzberger, Will A. Overholt, Kirsten Küsel, Olaf Kolle, Mathias Göckede, Nikita Zimov, and Arne Körtzinger
Biogeosciences, 19, 5059–5077, https://doi.org/10.5194/bg-19-5059-2022, https://doi.org/10.5194/bg-19-5059-2022, 2022
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Permafrost thaw releases methane that can be emitted into the atmosphere or transported by Arctic rivers. Methane measurements are lacking in large Arctic river regions. In the Kolyma River (northeast Siberia), we measured dissolved methane to map its distribution with great spatial detail. The river’s edge and river junctions had the highest methane concentrations compared to other river areas. Microbial communities in the river showed that the river’s methane likely is from the adjacent land.
Sonja Gindorf, Hermann W. Bange, Dennis Booge, and Annette Kock
Biogeosciences, 19, 4993–5006, https://doi.org/10.5194/bg-19-4993-2022, https://doi.org/10.5194/bg-19-4993-2022, 2022
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Methane is a climate-relevant greenhouse gas which is emitted to the atmosphere from coastal areas such as the Baltic Sea. We measured the methane concentration in the water column of the western Kiel Bight. Methane concentrations were higher in September than in June. We found no relationship between the 2018 European heatwave and methane concentrations. Our results show that the methane distribution in the water column is strongly affected by temporal and spatial variabilities.
Margaret Capooci and Rodrigo Vargas
Biogeosciences, 19, 4655–4670, https://doi.org/10.5194/bg-19-4655-2022, https://doi.org/10.5194/bg-19-4655-2022, 2022
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Tidal salt marsh soil emits greenhouse gases, as well as sulfur-based gases, which play roles in global climate but are not well studied as they are difficult to measure. Traditional methods of measuring these gases worked relatively well for carbon dioxide, but less so for methane, nitrous oxide, carbon disulfide, and dimethylsulfide. High variability of trace gases complicates the ability to accurately calculate gas budgets and new approaches are needed for monitoring protocols.
Janne Rinne, Patryk Łakomiec, Patrik Vestin, Joel D. White, Per Weslien, Julia Kelly, Natascha Kljun, Lena Ström, and Leif Klemedtsson
Biogeosciences, 19, 4331–4349, https://doi.org/10.5194/bg-19-4331-2022, https://doi.org/10.5194/bg-19-4331-2022, 2022
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The study uses the stable isotope 13C of carbon in methane to investigate the origins of spatial and temporal variation in methane emitted by a temperate wetland ecosystem. The results indicate that methane production is more important for spatial variation than methane consumption by micro-organisms. Temporal variation on a seasonal timescale is most likely affected by more than one driver simultaneously.
Kukka-Maaria Kohonen, Roderick Dewar, Gianluca Tramontana, Aleksanteri Mauranen, Pasi Kolari, Linda M. J. Kooijmans, Dario Papale, Timo Vesala, and Ivan Mammarella
Biogeosciences, 19, 4067–4088, https://doi.org/10.5194/bg-19-4067-2022, https://doi.org/10.5194/bg-19-4067-2022, 2022
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Four different methods for quantifying photosynthesis (GPP) at ecosystem scale were tested, of which two are based on carbon dioxide (CO2) and two on carbonyl sulfide (COS) flux measurements. CO2-based methods are traditional partitioning, and a new method uses machine learning. We introduce a novel method for calculating GPP from COS fluxes, with potentially better applicability than the former methods. Both COS-based methods gave on average higher GPP estimates than the CO2-based estimates.
Lutz Beckebanze, Benjamin R. K. Runkle, Josefine Walz, Christian Wille, David Holl, Manuel Helbig, Julia Boike, Torsten Sachs, and Lars Kutzbach
Biogeosciences, 19, 3863–3876, https://doi.org/10.5194/bg-19-3863-2022, https://doi.org/10.5194/bg-19-3863-2022, 2022
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In this study, we present observations of lateral and vertical carbon fluxes from a permafrost-affected study site in the Russian Arctic. From this dataset we estimate the net ecosystem carbon balance for this study site. We show that lateral carbon export has a low impact on the net ecosystem carbon balance during the complete study period (3 months). Nevertheless, our results also show that lateral carbon export can exceed vertical carbon uptake at the beginning of the growing season.
Shahar Baram, Asher Bar-Tal, Alon Gal, Shmulik P. Friedman, and David Russo
Biogeosciences, 19, 3699–3711, https://doi.org/10.5194/bg-19-3699-2022, https://doi.org/10.5194/bg-19-3699-2022, 2022
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Static chambers are the most common tool used to measure greenhouse gas (GHG) fluxes. We tested the impact of such chambers on nitrous oxide emissions in drip irrigation. Field measurements and 3-D simulations show that the chamber base drastically affects the water and nutrient distribution in the soil and hence the measured GHG fluxes. A nomogram is suggested to determine the optimal diameter of a cylindrical chamber that ensures minimal disturbance.
Cited articles
Alperin, M. J., Albert, D. B., and Martens, C. S.: Seasonal variations in
production and consumption rates of dissolved organic carbon in an
organic-rich coastal sediment, Geochim. Cosmochim. Ac., 58,
4909–4930, https://doi.org/10.1016/0016-7037(94)90221-6, 1994.
Arndt, S., Jørgensen, B. B., LaRowe, D. E., Middelburg, J. J., Pancost,
R. D., and Regnier, P.: Quantifying the degradation of organic matter in
marine sediments: A review and synthesis, Earth-Sci. Rev., 123,
53–86, https://doi.org/10.1016/j.earscirev.2013.02.008, 2013.
Arning, E. T., van Berk, W., and Schulz, H.-M.: Fate and behaviour of marine
organic matter during burial of anoxic sediments: Testing CH2O as
generalized input parameter in reaction transport models, Mar. Chem.,
178, 8–21, https://doi.org/10.1016/j.marchem.2015.12.002, 2016.
Bastviken, D., Cole, J., Pace, M., and Tranvik, L.: Methane emissions from
lakes: Dependence of lake characteristics, two regional assessments, and a
global estimate: LAKE METHANE EMISSIONS, Global Biogeochem. Cy.,
18, GB4009, https://doi.org/10.1029/2004GB002238, 2004.
Bastviken, D., Cole, J. J., Pace, M. L., and Van de Bogert, M. C.: Fates of
methane from different lake habitats: Connecting whole-lake budgets and CH4 emissions: FATES OF LAKE METHANE, J. Geophys. Res.-Biogeo., 113, G02024, https://doi.org/10.1029/2007JG000608, 2008.
Beal, E. J., House, C. H., and Orphan, V. J.: Manganese- and iron-dependent
marine methane oxidation, Science, 325, 184–187,
https://doi.org/10.1126/science.1169984, 2009.
Berg, P., Risgaard-Petersen, N., and Rysgaard, S.: Interpretation of measured
concentration profiles in sediment pore water, Limnol. Oceanogr.,
43, 1500–1510, https://doi.org/10.4319/lo.1998.43.7.1500, 1998.
Borowski, W. S., Paull, C. K., and Ussler, W.: Carbon cycling within the
upper methanogenic zone of continental rise sediments; An example from the
methane-rich sediments overlying the Blake Ridge gas hydrate deposits,
Mar. Chem., 57, 299–311, https://doi.org/10.1016/S0304-4203(97)00019-4, 1997.
Botrel, M., Gregory-Eaves, I., and Maranger, R.: Defining drivers of nitrogen
stable isotopes (δ15N) of surface sediments in temperate lakes, J.
Paleolimnol., 52, 419–433, https://doi.org/10.1007/s10933-014-9802-6, 2014.
Boudreau, B. P.: On the equivalence of nonlocal and radial-diffusion models
for porewater irrigation, J. Mar. Res., 42, 731–735,
https://doi.org/10.1357/002224084788505924, 1984.
Boudreau, B. P.: Diagenetic models and their implementation: modelling
transport and reactions in aquatic sediments, Springer, Berlin, Germany, 1997.
Boudreau, B. P. and Marinelli, R. L.: A modelling study of discontinuous biological irrigation, J. Mar. Res., 52, 947–968, https://doi.org/10.1357/0022240943076902, 1994.
Buffle, J.: Complexation reactions in aquatic systems: An analytical
approach, Ellis Horwood Limited, Cambridge, UK, 1988.
Burdige, D. J.: Microbial processes affecting alanine and glutamic acid in anoxic marine sediments, FEMS Microbiol. Ecol., 85, 211–232, 1991.
Burdige, D. J.: Preservation of Organic Matter in Marine Sediments:
Controls, Mechanisms, and an Imbalance in Sediment Organic Carbon Budgets?,
Chem. Rev., 107, 467–485, https://doi.org/10.1021/cr050347q, 2007.
Burdige, D. J. and Komada, T.: Anaerobic oxidation of methane and the
stoichiometry of remineralization processes in continental margin sediments,
Limnol. Oceanogr., 56, 1781–1796,
https://doi.org/10.4319/lo.2011.56.5.1781, 2011.
Burdige, D. J., Komada, T., Magen, C., and Chanton, J. P.: Methane dynamics in
Santa Barbara Basin (USA) sediments as examined with a reaction-transport
model, J. Mar. Res., 74, 277–313, 2017.
Carignan, R. and Lean, D. R. S.: Regeneration of dissolved substances in a
seasonally anoxic lake: The relative importance of processes occurring in
the water column and in the sediments, Limnol. Oceanogr., 36,
683–707, https://doi.org/10.4319/lo.1991.36.4.0683, 1991.
Carignan, R., Rapin, F., and Tessier, A.: Sediment porewater sampling for
metal analysis: A comparison of techniques, Geochim. Cosmochim. Ac.,
49, 2493–2497, https://doi.org/10.1016/0016-7037(85)90248-0, 1985.
Chanton, J. P., Martens, C. S., and Kelley, C. A.: Gas transport from
methane-saturated, tidal freshwater and wetland sediments, Limnol. Oceanogr., 34, 807–819, https://doi.org/10.4319/lo.1989.34.5.0807, 1989.
Chanton, J. P., Whiting, G. J., Blair, N. E., Lindau, C. W., and Bollich, P.
K.: Methane emission from rice: Stable isotopes, diurnal variations, and CO2
exchange, Global Biogeochem. Cy., 11, 15–27,
https://doi.org/10.1029/96GB03761, 1997.
Chasar, L. S., Chanton, J. P., Glaser, P. H., Siegel, D. I., and Rivers, J.
S.: Radiocarbon and stable carbon isotopic evidence for transport and
transformation of dissolved organic carbon, dissolved inorganic carbon, and
CH4 in a northern Minnesota peatland, Global Biogeochem. Cy., 14,
1095–1108, https://doi.org/10.1029/1999GB001221, 2000.
Clayer, F., Gobeil, C., and Tessier, A.: Rates and pathways of sedimentary
organic matter mineralization in two basins of a boreal lake: Emphasis on
methanogenesis and methanotrophy: Methane cycling in boreal lake sediments,
Limnol. Oceanogr., 61, S131–S149, https://doi.org/10.1002/lno.10323, 2016.
Clayer, F., Moritz, A., Gélinas, Y., Tessier, A., and Gobeil, C.:
Modeling the carbon isotope signatures of methane and dissolved inorganic
carbon to unravel mineralization pathways in boreal lake sediments,
Geochim. Cosmochim. Ac., 229, 36–52, https://doi.org/10.1016/j.gca.2018.02.012,
2018.
Clayer, F., Tessier, A., Gobeil, C., and Gélinas, Y.: Dataset for “Mineralization of organic matter in boreal lake sediments: Rates, pathways and nature of the fermenting substrates”, HydroShare, https://doi.org/10.4211/hs.38e069761d7b4cf4abe3cbcaaac06016, 2020.
Cole, J. J., Prairie, Y. T., Caraco, N. F., McDowell, W. H., Tranvik, L. J.,
Striegl, R. G., Duarte, C. M., Kortelainen, P., Downing, J. A., Middelburg,
J. J., and Melack, J.: Plumbing the Global Carbon Cycle: Integrating Inland
Waters into the Terrestrial Carbon Budget, Ecosystems, 10, 172–185,
https://doi.org/10.1007/s10021-006-9013-8, 2007.
Conrad, R.: Contribution of hydrogen to methane production and control of
hydrogen concentrations in methanogenic soils and sediments, FEMS
Microbiol. Ecol., 28, 193–202,
https://doi.org/10.1111/j.1574-6941.1999.tb00575.x, 1999.
Conrad, R.: Quantification of methanogenic pathways using stable carbon
isotopic signatures: a review and a proposal, Org. Geochem., 36,
739–752, https://doi.org/10.1016/j.orggeochem.2004.09.006, 2005.
Conrad, R., Claus, P., and Casper, P.: Characterization of stable isotope
fractionation during methane production in the sediment of a eutrophic lake,
Lake Dagow, Germany, Limnol. Oceanogr., 54, 457–471,
https://doi.org/10.4319/lo.2009.54.2.0457, 2009.
Corbett, J. E., Tfaily, M. M., Burdige, D. J., Cooper, W. T., Glaser, P. H., and Chanton, J. P.: Partitioning pathways of CO2 production in peatlands
with stable carbon isotopes, Biogeochemistry, 114, 327–340, 2013.
Corbett, J. E., Tfaily, M. M., Burdige, D. J., Glaser, P. H., and Chanton, J.
P.: The relative importance of methanogenesis in the decomposition of
organic matter in northern peatlands, J. Geophys. Res.-Biogeo., 120, 280–293, https://doi.org/10.1002/2014JG002797, 2015.
Couture, R.-M., Gobeil, C., and Tessier, A.: Chronology of Atmospheric
Deposition of Arsenic Inferred from Reconstructed Sedimentary Records,
Environ. Sci. Technol., 42, 6508–6513, https://doi.org/10.1021/es800818j, 2008.
Couture, R.-M., Gobeil, C., and Tessier, A.: Arsenic, iron and sulfur
co-diagenesis in lake sediments, Geochim. Cosmochim. Ac., 74,
1238–1255, https://doi.org/10.1016/j.gca.2009.11.028, 2010.
Couture, R.-M., Fischer, R., Van Cappellen, P., and Gobeil, C.: Non-steady
state diagenesis of organic and inorganic sulfur in lake sediments,
Geochim. Cosmochim. Ac., 194, 15–33, https://doi.org/10.1016/j.gca.2016.08.029,
2016.
Cranwell, P. A.: Diagenesis of free and bound lipids in terrestrial detritus
deposited in a lacustrine sediment, Org. Geochem., 3, 79–89,
https://doi.org/10.1016/0146-6380(81)90002-4, 1981.
D'Arcy, P.: Relations entre les propriétés du bassin versant, la
morphométrie du lac et la qualité des eaux, INRS-ETE, Université
du Québec, Québec City, Québec, Canada, 1993.
DelSontro, T., Boutet, L., St-Pierre, A., del Giorgio, P. A., and Prairie, Y.
T.: Methane ebullition and diffusion from northern ponds and lakes regulated
by the interaction between temperature and system productivity: Productivity
regulates methane lake flux, Limnol. Oceanogr., 61, S62–S77,
https://doi.org/10.1002/lno.10335, 2016.
Egger, M., Rasigraf, O., Sapart, C. J., Jilbert, T., Jetten, M. S. M.,
Röckmann, T., van der Veen, C., Bândă, N., Kartal, B., Ettwig,
K. F., and Slomp, C. P.: Iron-Mediated Anaerobic Oxidation of Methane in
Brackish Coastal Sediments, Environ. Sci. Technol., 49, 277–283,
https://doi.org/10.1021/es503663z, 2015.
Ettwig, K. F., Butler, M. K., Le Paslier, D., Pelletier, E., Mangenot, S.,
Kuypers, M. M. M., Schreiber, F., Dutilh, B. E., Zedelius, J., de Beer, D.,
Gloerich, J., Wessels, H. J. C. T., van Alen, T., Luesken, F., Wu, M. L.,
van de Pas-Schoonen, K. T., Op den Camp, H. J. M., Janssen-Megens, E. M.,
Francoijs, K.-J., Stunnenberg, H., Weissenbach, J., Jetten, M. S. M., and
Strous, M.: Nitrite-driven anaerobic methane oxidation by oxygenic bacteria,
Nature, 464, 543–548, https://doi.org/10.1038/nature08883, 2010.
Fakhraee, M., Li, J., and Katsev, S.: Significant role of organic sulfur in
supporting sedimentary sulfate reduction in low-sulfate environments,
Geochim. Cosmochim. Ac., 213, 502–516,
https://doi.org/10.1016/j.gca.2017.07.021, 2017.
Feyte, S., Gobeil, C., Tessier, A., and Cossa, D.: Mercury dynamics in lake
sediments, Geochim. Cosmochim. Ac., 82, 92–112,
https://doi.org/10.1016/j.gca.2011.02.007, 2012.
Forster, S. and Graf, G.: Impact of irrigation on oxygen flux into the sediment: Intermittent pumping by Callianassa subterranea and “piston-pumping” by Lanice conchilega,
Mar. Biol., 123, 335–346, https://doi.org/10.1007/BF00353625, 1995.
Francioso, O., Montecchio, D., Gioacchini, P., and Ciavatta, C.: Thermal
analysis (TG–DTA) and isotopic characterization (13C–15N) of humic acids
from different origins, Appl. Geochem., 20, 537–544,
https://doi.org/10.1016/j.apgeochem.2004.10.003, 2005.
Galand, P. E., Yrjälä, K., and Conrad, R.: Stable carbon isotope fractionation during methanogenesis in three boreal peatland ecosystems, Biogeosciences, 7, 3893–3900, https://doi.org/10.5194/bg-7-3893-2010, 2010.
Gallon, C., Hare, L., and Tessier, A.: Surviving in anoxic surroundings: How burrowing aquatic insects create an oxic microhabitat, J. N. Am. Benthol. Soc., 27, 570–580, https://doi.org/10.1899/07-132.1, 2008.
Hare, L.: Sediment Colonization by Littoral and Profundal Insects, J. N. Am. Benthol. Soc., 14, 315–323, https://doi.org/10.2307/1467783,
1995.
Hare, L., Carignan, R., and Huerta-Diaz, M. A.: A field study of metal
toxicity and accumulation by benthic invertebrates; implications for the
acid-volatile sulfide (AVS) model, Limnol. Oceanogr., 39,
1653–1668, https://doi.org/10.4319/lo.1994.39.7.1653, 1994.
Hastie, A., Lauerwald, R., Weyhenmeyer, G., Sobek, S., Verpoorter, C., and
Regnier, P.: CO2 evasion from boreal lakes: Revised estimate, drivers
of spatial variability, and future projections, Glob. Change Biol.,
24, 711–728, https://doi.org/10.1111/gcb.13902, 2018.
Hedges, J. I. and Oades, J. M.: Comparative organic geochemistries of soils
and marine sediments, Org. Geochem., 27, 319–361,
https://doi.org/10.1016/S0146-6380(97)00056-9, 1997.
Hesslein, R. H.: An in situ sampler for close interval pore water studies1,
Limnol. Oceanogr., 21, 912–914, https://doi.org/10.4319/lo.1976.21.6.0912,
1976.
Holgerson, M. A. and Raymond, P. A.: Large contribution to inland water CO2
and CH4 emissions from very small ponds, Nat. Geosci., 9, 222–226,
https://doi.org/10.1038/ngeo2654, 2016.
Hornibrook, E. R. C., Longstaffe, F. J., and Fyfe, W. S.: Spatial
distribution of microbial methane production pathways in temperate zone
wetland soils: Stable carbon and hydrogen isotope evidence, Geochim. Cosmochim. Ac., 61, 745–753, https://doi.org/10.1016/S0016-7037(96)00368-7, 1997.
Hornibrook, E. R. C., Longstaffe, F. J., and Fyfe, W. S.: Evolution of stable
carbon isotope compositions for methane and carbon dioxide in freshwater
wetlands and other anaerobic environments, Geochim. Cosmochim. Ac.,
64, 1013–1027, https://doi.org/10.1016/S0016-7037(99)00321-X, 2000.
Jørgensen, B. B. and Parkes, R. J.: Role of sulfate reduction and methane
production by organic carbon degradation in eutrophic fjord sediments
(Limfjorden, Denmark), Limnol. Oceanogr., 55, 1338–1352,
https://doi.org/10.4319/lo.2010.55.3.1338, 2010.
Joshani, A.: Investigating organic matter preservation through complexation
with iron oxides in Lake Tantaré, masters, Concordia University, 1
September, available at:
https://spectrum.library.concordia.ca/980434/ (last access: 12 December 2019),
2015.
Kankaala, P., Huotari, J., Tulonen, T., and Ojala, A.: Lake-size dependent
physical forcing drives carbon dioxide and methane effluxes from lakes in a
boreal landscape, Limnol. Oceanogr., 58, 1915–1930,
https://doi.org/10.4319/lo.2013.58.6.1915, 2013.
Laforte, L., Tessier, A., Gobeil, C., and Carignan, R.: Thallium diagenesis
in lacustrine sediments, Geochim. Cosmochim. Ac., 69,
5295–5306, https://doi.org/10.1016/j.gca.2005.06.006, 2005.
LaRowe, D. E. and Van Cappellen, P.: Degradation of natural organic matter:
A thermodynamic analysis, Geochim. Cosmochim. Ac., 75,
2030–2042, https://doi.org/10.1016/j.gca.2011.01.020, 2011.
Lazzaretti, M. A., Hanselmann, K. W., Brandl, H., Span, D., and Bachofen, R.:
The role of sediments in the phosphorus cycle in Lake Lugano. II. Seasonal
and spatial variability of microbiological processes at the sediment-water
interface, Aquat. Sci., 54, 285–299, https://doi.org/10.1007/BF00878142, 1992.
Lazzaretti-Ulmer, M. A. and Hanselmann, K. W.: Seasonal variation of the
microbially regulated buffering capacity at sediment-water interfaces in a
freshwater lake, Aquat. Sci., 61, 59–74, https://doi.org/10.1007/s000270050052,
1999.
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.
Matsumoto, G. I.: Biogeochemical study of organic substances in Antarctic
lakes, Hydrobiologia, 172, 265–299, https://doi.org/10.1007/BF00031627, 1989.
Meile, C. D., Berg, P., Cappellen, P. S. J., and Tuncay, K.: Solute-specific
pore water irrigation: Implications for chemical cycling in early
diagenesis, J. Mar. Res., 63, 601–621, https://doi.org/10.1357/0022240054307885,
2005.
Natchimuthu, S., Wallin, M. B., Klemedtsson, L., and Bastviken, D.:
Spatio-temporal patterns of stream methane and carbon dioxide emissions in a
hemiboreal catchment in Southwest Sweden, Sci. Rep., 7, 39729,
https://doi.org/10.1038/srep39729, 2017.
Niessen, F., Wick, L., Bonani, G., Chondrogianni, C., and Siegenthaler, C.:
Aquatic system response to climatic and human changes: Productivity, bottom
water oxygen status, and sapropel formation in Lake Lugano over the last 10 000 years, Aquat. Sci., 54, 257–276, https://doi.org/10.1007/BF00878140, 1992.
Norði, K. À, Thamdrup, B., and Schubert, C. J.: Anaerobic oxidation
of methane in an iron-rich Danish freshwater lake sediment, Limnol. Oceanogr., 58, 546–554, https://doi.org/10.4319/lo.2013.58.2.0546, 2013.
Paraska, D. W., Hipsey, M. R., and Salmon, S. U.: Sediment diagenesis models:
Review of approaches, challenges and opportunities, Environ. Model. Softw., 61, 297–325, https://doi.org/10.1016/j.envsoft.2014.05.011, 2014.
Pohlman, J. W., Ruppel, C., Hutchinson, D. R., Downer, R., and Coffin, R. B.:
Assessing sulfate reduction and methane cycling in a high salinity pore
water system in the northern Gulf of Mexico, Mar. Petrol. Geol.,
25, 942–951, https://doi.org/10.1016/j.marpetgeo.2008.01.016, 2008.
Pohlman, J. W., Riedel, M., Bauer, J. E., Canuel, E. A., Paull, C. K.,
Lapham, L., Grabowski, K. S., Coffin, R. B., and Spence, G. D.: Anaerobic
methane oxidation in low-organic content methane seep sediments, Geochim. Cosmochim. Ac., 108, 184–201, https://doi.org/10.1016/j.gca.2013.01.022, 2013.
Poindexter, C. M., Baldocchi, D. D., Matthes, J. H., Knox, S. H., and
Variano, E. A.: The contribution of an overlooked transport process to a
wetland's methane emissions, Geophys. Res. Lett., 43,
6276–6284, https://doi.org/10.1002/2016GL068782, 2016.
Raghoebarsing, A. A., Pol, A., van de Pas-Schoonen, K. T., Smolders, A. J.
P., Ettwig, K. F., Rijpstra, W. I. C., Schouten, S., Damsté, J. S. S.,
Op den Camp, H. J. M., Jetten, M. S. M., and Strous, M.: A microbial
consortium couples anaerobic methane oxidation to denitrification, Nature,
440, 918–921, https://doi.org/10.1038/nature04617, 2006.
Riisgård, H. U. and Larsen, P. S.: Water pumping and analysis of flow in burrowing zoobenthos: An overview, Aquat. Ecol., 39, 237–258, https://doi.org/10.1007/s10452-004-1916-x, 2005.
Sabrekov, A. F., Runkle, B. R. K., Glagolev, M. V., Terentieva, I. E., Stepanenko, V. M., Kotsyurbenko, O. R., Maksyutov, S. S., and Pokrovsky, O. S.: Variability in methane emissions from West Siberia's shallow boreal lakes on a regional scale and its environmental controls, Biogeosciences, 14, 3715–3742, https://doi.org/10.5194/bg-14-3715-2017, 2017.
Sauer, P. E., Miller, G. H., and Overpeck, J. T.: Oxygen isotope ratios of
organic matter in arctic lakes as a paleoclimate proxy: field and laboratory
investigations, J. Paleolimnol., 25, 43–64,
https://doi.org/10.1023/A:1008133523139, 2001.
Schindler, D. W., Curtis, P. J., Parker, B. R., and Stainton, M. P.:
Consequences of climate warming and lake acidification for UV-B penetration
in North American boreal lakes, Nature, 379, 705–708,
https://doi.org/10.1038/379705a0, 1996.
Sivan, O., Schrag, D. P., and Murray, R. W.: Rates of methanogenesis and
methanotrophy in deep-sea sediments, Geobiology, 5, 141–151,
https://doi.org/10.1111/j.1472-4669.2007.00098.x, 2007.
Staehr, P. A., Testa, J. M., Kemp, W. M., Cole, J. J., Sand-Jensen, K., and
Smith, S. V.: The metabolism of aquatic ecosystems: history, applications,
and future challenges, Aquat. Sci., 74, 15–29,
https://doi.org/10.1007/s00027-011-0199-2, 2012.
Thottathil, S. D., Reis, P. C. J., and Prairie, Y. T.: Methane oxidation
kinetics in northern freshwater lakes, Biogeochemistry, 143, 105–116,
https://doi.org/10.1007/s10533-019-00552-x, 2019.
Tipping, E.: Cation binding by humic substances, Cambridge University
Press, Cambridge, UK, 2002.
Turner, A. J., Jacob, D. J., Wecht, K. J., Maasakkers, J. D., Lundgren, E., Andrews, A. E., Biraud, S. C., Boesch, H., Bowman, K. W., Deutscher, N. M., Dubey, M. K., Griffith, D. W. T., Hase, F., Kuze, A., Notholt, J., Ohyama, H., Parker, R., Payne, V. H., Sussmann, R., Sweeney, C., Velazco, V. A., Warneke, T., Wennberg, P. O., and Wunch, D.: Estimating global and North American methane emissions with high spatial resolution using GOSAT satellite data, Atmos. Chem. Phys., 15, 7049–7069, https://doi.org/10.5194/acp-15-7049-2015, 2015.
Ullman, W. J. and Aller, R. C.: Diffusion coefficients in nearshore marine
sediments1, Limnol. Oceanogr., 27, 552–556,
https://doi.org/10.4319/lo.1982.27.3.0552, 1982.
Verpoorter, C., Kutser, T., Seekell, D. A., and Tranvik, L. J.: A global
inventory of lakes based on high-resolution satellite imagery, Geophys. Res. Lett., 41, 6396–6402, https://doi.org/10.1002/2014GL060641, 2014.
Wallin, M. B., Campeau, A., Audet, J., Bastviken, D., Bishop, K., Kokic, J.,
Laudon, H., Lundin, E., Löfgren, S., Natchimuthu, S., Sobek, S.,
Teutschbein, C., Weyhenmeyer, G. A., and Grabs, T.: Carbon dioxide and
methane emissions of Swedish low-order streams – a national estimate and
lessons learnt from more than a decade of observations, Limnol. Oceanogr. Lett., 3, 156–167, https://doi.org/10.1002/lol2.10061, 2018.
Wand, U., Samarkin, V. A., Nitzsche, H.-M., and Hubberten, H.-W.:
Biogeochemistry of methane in the permanently ice-covered Lake Untersee,
central Dronning Maud Land, East Antarctica, Limnol. Oceanogr.,
51, 1180–1194, https://doi.org/10.4319/lo.2006.51.2.1180, 2006.
Wang, Y. and Van Cappellen, P.: A multicomponent reactive transport model of
early diagenesis: Application to redox cycling in coastal marine sediments,
Geochim. Cosmochim. Ac., 60, 2993–3014,
https://doi.org/10.1016/0016-7037(96)00140-8, 1996.
Whiticar, M. J.: Carbon and hydrogen isotope systematics of bacterial
formation and oxidation of methane, Chem. Geol., 161, 291–314,
https://doi.org/10.1016/S0009-2541(99)00092-3, 1999.
Whiticar, M. J., Faber, E., and Schoell, M.: Biogenic methane formation in
marine and freshwater environments: CO2 reduction vs. acetate
fermentation—Isotope evidence, Geochim. Cosmochim. Ac., 50,
693–709, https://doi.org/10.1016/0016-7037(86)90346-7, 1986.
Wuebbles, D. J. and Hayhoe, K.: Atmospheric methane and global change,
Earth-Sci. Rev., 57, 177–210, https://doi.org/10.1016/S0012-8252(01)00062-9,
2002.
Short summary
Here, we quantified the sediment production of methane and carbon dioxide in lake sediments to better characterize the nature of the organic matter at the origin of these two greenhouse gases. We demonstrate that the production of these gases is not adequately represented in models for deep lake sediments. We thus propose to improve the representation of organic matter degradation reactions in current models for improving predictions of greenhouse gas cycling in aquatic sediments.
Here, we quantified the sediment production of methane and carbon dioxide in lake sediments to...
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