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Biogenic volatile release from permafrost thaw is determined by the soil microbial sink

Kramshöj, Magnus; Albers, Christian N.; Holst, Thomas LU ; Holzinger, Rupert; Elberling, Bo and Rinnan, Riikka (2018) In Nature Communications 9.
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 14C-labeled ethanol and methanol, we demonstrate that these compounds are consumed by... (More)
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 14C-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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nature Communications
volume
9
publisher
Nature Publishing Group
external identifiers
  • scopus:85052209020
ISSN
2041-1723
DOI
10.1038/s41467-018-05824-y
language
English
LU publication?
yes
id
cd83ecfc-7640-40a2-8388-aabbc00a9141
date added to LUP
2018-09-20 17:36:45
date last changed
2019-01-06 14:05:25
@article{cd83ecfc-7640-40a2-8388-aabbc00a9141,
  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 14C-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.},
  articleno    = {3412},
  author       = {Kramshöj, Magnus and Albers, Christian N. and Holst, Thomas and Holzinger, Rupert and Elberling, Bo and Rinnan, Riikka},
  issn         = {2041-1723},
  language     = {eng},
  month        = {08},
  publisher    = {Nature Publishing Group},
  series       = {Nature Communications},
  title        = {Biogenic volatile release from permafrost thaw is determined by the soil microbial sink},
  url          = {http://dx.doi.org/10.1038/s41467-018-05824-y},
  volume       = {9},
  year         = {2018},
}