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BG | Articles | Volume 17, issue 18
Biogeosciences, 17, 4571–4589, 2020
https://doi.org/10.5194/bg-17-4571-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 17, 4571–4589, 2020
https://doi.org/10.5194/bg-17-4571-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 18 Sep 2020

Research article | 18 Sep 2020

Mineralization of organic matter in boreal lake sediments: rates, pathways, and nature of the fermenting substrates

François Clayer et al.

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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. 
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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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