Roles of Thermokarst Lakes in a Warming World

in 't Zandt, Michiel H.; Liebner, Susanne; Welte, Cornelia U.

doi:10.1016/j.tim.2020.04.002

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Roles of Thermokarst Lakes in a Warming World

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in 't Zandt, Michiel H.
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Liebner, Susanne
3.7 Geomicrobiology, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Welte, Cornelia U.
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Citation

in 't Zandt, M. H., Liebner, S., Welte, C. U. (2020): Roles of Thermokarst Lakes in a Warming World. - Trends in Microbiology, 28, 9, 769-779.
https://doi.org/10.1016/j.tim.2020.04.002

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5001832

Abstract

Permafrost covers a quarter of the northern hemisphere land surface and contains twice the amount of carbon that is currently present in the atmosphere. Future climate change is expected to reduce its near-surface cover by over 90% by the end of the 21st century, leading to thermokarst lake formation. Thermokarst lakes are point sources of carbon dioxide and methane which release long-term carbon stocks into the atmosphere, thereby initiating a positive climate feedback potentially contributing up to a 0.39°C rise of surface air temperatures by 2300. This review describes the potential role of thermokarst lakes in a warming world and the microbial mechanisms that underlie their contributions to the global greenhouse gas budget.