| Title: | Biogenic volatile release from permafrost thaw is determined by the soil microbial sink |
| Author(s): | Kramshoj M; Albers CN; Holst T; Holzinger R; Elberling B; Rinnan R; |
| Address: | "Terrestrial Ecology Section, Department of Biology, University of Copenhagen, Universitetsparken 15, DK-2100, Copenhagen, Denmark. Center for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, Oster Voldgade 10, DK-1350, Copenhagen, Denmark. Department of Geochemistry, Geological Survey of Denmark and Greenland (GEUS), Oster Voldgade 10, DK-1350, Copenhagen, Denmark. Department of Physical Geography & Ecosystem Science, Lund University, Solvegatan 12, S-22362, Lund, Sweden. Institute for Marine and Atmospheric Research (IMAU), Utrecht University, Princetonplein 5, 3584 CC, Utrecht, The Netherlands. Terrestrial Ecology Section, Department of Biology, University of Copenhagen, Universitetsparken 15, DK-2100, Copenhagen, Denmark. riikkar@bio.ku.dk. Center for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, Oster Voldgade 10, DK-1350, Copenhagen, Denmark. riikkar@bio.ku.dk" |
| DOI: | 10.1038/s41467-018-05824-y |
| ISSN/ISBN: | 2041-1723 (Electronic) 2041-1723 (Linking) |
| Abstract: | "Warming in the Arctic accelerates thawing of permafrost-affected soils, which leads to a release of greenhouse gases to the atmosphere. We do not know whether permafrost thaw also releases non-methane volatile organic compounds that can contribute to both negative and positive radiative forcing on climate. Here we show using proton transfer reaction-time of flight-mass spectrometry that substantial amounts of ethanol and methanol and in total 316 organic ions were released from Greenlandic permafrost soils upon thaw in laboratory incubations. We demonstrate that the majority of this release is taken up in the active layer above. In an experiment using (14)C-labeled ethanol and methanol, we demonstrate that these compounds are consumed by microorganisms. Our findings highlight that the thawing permafrost soils are not only a considerable source of volatile organic compounds but also that the active layer regulates their release into the atmosphere" |
| Keywords: | Climate Ethanol/metabolism Methanol/metabolism *Permafrost Soil Microbiology; |
| Notes: | "MedlineKramshoj, Magnus Albers, Christian N Holst, Thomas Holzinger, Rupert Elberling, Bo Rinnan, Riikka eng Research Support, Non-U.S. Gov't England 2018/08/26 Nat Commun. 2018 Aug 24; 9(1):3412. doi: 10.1038/s41467-018-05824-y" |
