Articles | Volume 15, issue 7
https://doi.org/10.5194/bg-15-1969-2018
https://doi.org/10.5194/bg-15-1969-2018
Research article
 | 
04 Apr 2018
Research article |  | 04 Apr 2018

Substrate potential of last interglacial to Holocene permafrost organic matter for future microbial greenhouse gas production

Janina G. Stapel, Georg Schwamborn, Lutz Schirrmeister, Brian Horsfield, and Kai Mangelsdorf

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Cited articles

Andreev, A. A., Grosse, G., Schirrmeister, L., Kuzmina, S. A., Novenko, E. Y., Bobrov, A. A., Tarasov, P. E., Ilyashuk, B. P., Kuznetsova, T. V., Brbetschek, M., Meyer, H., and Kunitsky, V. V.: Late Saalian and Eemian palaeoenvironmental history of the Bol'shoy;shoy Lyakhovsky Island (Laptev Sea region, Arctic Siberia), Boreas, 33, 319–348, https://doi.org/10.1111/j.1502-3885.2004.tb01244.x, 2004. 
Andreev, A. A., Grosse, G., Schirrmeister, L., Kuznetsova, T. V., Kuzmina, S. A , Bobrov, A. A., Tarasov, P. E., Novenko, E. Y., Meyer, H., Derevyagin, A. Y., Kienast, F., Bryantseva, A., and Kunitsky, V. V.: Weichselian and Holocene palaeoenvironmental history of the Bol'shoy Lyakhovsky Island, New Siberian Archipelago, Arctic Siberia, Boreas, 38, 72–110, https://doi.org/10.1111/j.1502-3885.2008.00039.x, 2009. 
Andreev, A. A., Schirrmeister, L., Tarasov, P. E., Ganopolski, A., Brovkin, V., Siegert, C., Wetterich, S., and Hubberten, H.-W.: Vegetation and climate history in the Laptev Sea region (Arctic Siberia) during Late Quaternary inferred from pollen records, Quaternary Sci. Rev., 30, 2182–2199, https://doi.org/10.1016/j.quascirev.2010.12.026, 2011. 
Anisimov, O. A.: Potential feedback of thawing permafrost to the global climate system through methane emission, Environ. Res. Lett., 2, 045016, https://doi.org/10.1088/1748-9326/2/4/045016, 2007. 
Arkhangelov, A., Mikhalev, D., and Nikolaev, V.: Reconstruction of formation conditions of permafrost and climates in Northern Eurasia, History of Permafrost Regions and Periglacial Zones of Northern Eurasia and Conditions of Old Human Settlement, edited by: Velichko, A. A., Arkhangelov, A. A., Borisova, O. K., Gribchenko, Yu. N., Drenova, A. N., Yelikson, Ye. M., Kursenkova, E. I., Mikhaelev, D. V., Nikolaev, V. I., Novenko, E. Yu., and Timireva, S. N., 85–109, Institut of Geography, Russian Academy of Science, Moscow, 1996 (in Russian). 
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Short summary
Climate warming in the Arctic results in thawing of permafrost deposits. This promotes the accessibility of freeze-locked old organic matter (OM) accumulated during the past. Characterizing OM of different depositional ages, we were able to show that OM from last glacial Yedoma deposits possess the highest potential to provide organic substrates such as acetate for microbial greenhouse gas production and therefore to accelerate the carbon–climate feedback cycle during ongoing global warming.
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