Methanotrophy across a natural permafrost thaw environment
نویسندگان
چکیده
منابع مشابه
Long-term CO2 production following permafrost thaw
Thawing permafrost represents a poorly understood feedback mechanism of climate change in the Arctic, but with a potential impact owing to stored carbon being mobilized1–5. We have quantified the long-term loss of carbon (C) from thawing permafrost in Northeast Greenland from 1996 to 2008 by combining repeated sediment sampling to assess changes in C stock and >12 years of CO2 production in inc...
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Since nitrogen (N) is often limiting in permafrost soils, we investigated the N2-fixing genetic potential and the inferred taxa harboring those genes by sequencing nifH gene fragments in samples taken along a permafrost thaw gradient in an Alaskan boreal soil. Samples from minimally, moderately and extensively thawed sites were taken to a depth of 79 cm to encompass zones above and below the de...
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Permafrost thawing leads to the formation of thermokarst ponds that potentially emit CO2 and CH4 to the atmosphere. In the Nunavik subarctic region (northern Québec, Canada), these numerous, shallow ponds become well-stratified during summer. This creates a physico-chemical gradient of temperature and oxygen, with an upper oxic layer and a bottom low oxygen or anoxic layer. Our objective was to...
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Permafrost in the Arctic is thawing, exposing large carbon and nitrogen stocks for decomposition. Gaseous carbon release from Arctic soils due to permafrost thawing is known to be substantial, but growing evidence suggests that Arctic soils may also be relevant sources of nitrous oxide (N2O). Here we show that N2O emissions from subarctic peatlands increase as the permafrost thaws. In our study...
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Phototrophic pigment diversity and picophytoplankton in permafrost thaw lakes 1 2 A. Przytulska, J. Comte, S. Crevecoeur, C. Lovejoy, I. Laurion and W. F. Vincent 3 4 Centre d’études nordiques (CEN) and Département de biologie, Université Laval, Québec City, 5 QC G1V 0A6, CANADA 6 Takuvik Joint International Laboratory, Centre National de la Recherche Scientifique (France, 7 CNRS UMI 3376) and ...
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ژورنال
عنوان ژورنال: The ISME Journal
سال: 2018
ISSN: 1751-7362,1751-7370
DOI: 10.1038/s41396-018-0065-5