Temperature-controlled organic carbon mineralization in lake sediments

Cristian Gudasz (), David Bastviken, Kristin Steger, Katrin Premke, Sebastian Sobek and Lars J. Tranvik
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Cristian Gudasz: Limnology, Uppsala University, Norbyvägen 18D, SE-752 36 Uppsala, Sweden
David Bastviken: Linköping University
Kristin Steger: Limnology, Uppsala University, Norbyvägen 18D, SE-752 36 Uppsala, Sweden
Katrin Premke: Limnology, Uppsala University, Norbyvägen 18D, SE-752 36 Uppsala, Sweden
Sebastian Sobek: Limnology, Uppsala University, Norbyvägen 18D, SE-752 36 Uppsala, Sweden
Lars J. Tranvik: Limnology, Uppsala University, Norbyvägen 18D, SE-752 36 Uppsala, Sweden

Nature, 2010, vol. 466, issue 7305, 478-481

Abstract: Lakes as carbon sinks Inland water sediments are important, but commonly disregarded long-term carbon sinks — in fact, the annual burial of organic carbon in lakes and reservoirs exceeds that of ocean sediments. Gudasz et al. now show that for several different types of lake in subarctic Sweden, the mineralization of carbon in lake sediments significantly increases as temperatures increase. Assuming that future organic carbon delivery to the lake sediments will be similar to present-day conditions, this could act as a positive feedback to global warming.

Date: 2010
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DOI: 10.1038/nature09186

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