Articles | Volume 12, issue 23
Biogeosciences, 12, 7223–7237, 2015
https://doi.org/10.5194/bg-12-7223-2015

Special issue: Freshwater ecosystems in changing permafrost landscapes

Biogeosciences, 12, 7223–7237, 2015
https://doi.org/10.5194/bg-12-7223-2015

Research article 10 Dec 2015

Research article | 10 Dec 2015

Carbon dynamics in highly heterotrophic subarctic thaw ponds

T. Roiha et al.

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Cited articles

Adams, H. E., Crump, B. C., and Kling, G. W.: Temperature controls on aquatic bacterial production and community dynamics in arctic lakes and streams, Environ. Microbiol., 12, 1319–1333, https://doi.org/10.1111/j.1462-2920.2010.02176.x, 2010.
Arvola, L., Ojala, A., Barbosa, F., and Heaney, S.: Migration behaviour of three cryptophytes in relation to environmental gradients: an experimental approach, Brit. Phyco. J., 26, 361–373, https://doi.org/10.1080/00071619100650331, 1991.
Bastviken, D., Cole, J., Pace, M., and Tranvik, L.: Methane emissions from lakes: Dependence of lake characteristics, two regional assessments, and a global estimate, Global Biogeochem. Cy., 18, GB4033, 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, J. Geophys. Res.-Biogeo., 113, G02024, https://doi.org/10.1029/2007JG000608, 2008.
Bégin, P. N.: Rotifer abundance, biodiversity and controlling variables in subarctic thermokarst lakes and ponds, M.Sc thesis, Université Laval, Québec, 78 pp., 2014.
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Short summary
Global warming thaws permafrost and accelerates the formation of thaw ponds in subarctic and arctic regions. These abundant ponds receive large terrestrial carbon inputs from the thawing and eroding permafrost, which is mainly used by bacterioplankton for the production of new biomass. Bacteria metabolism also produces high levels of CO2 and CH4, which make thaw ponds important sources of greenhouse gases to the atmosphere. We present carbon dynamics in thaw ponds in northern Quebec.
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