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Large scale variati...
Large scale variations in CH4 emissions from wetlands explained by temperature and substrate availability
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- Christensen, Torben R. (author)
- Climate Impacts Group, Department of Ecology, Lund University
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- Joabsson, Anna (author)
- Climate Impacts Group, Department of Ecology, Lund University
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- Ström, Lena (author)
- Climate Impacts Group, Department of Ecology, Lund University
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- Panikov, Nicolai (author)
- Climate Impacts Group, Department of Ecology, Lund University. Institute of Microbiology,Russian Academy of Sciences, Moscow
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- Mastepanov, Mihail (author)
- Climate Impacts Group, Department of Ecology, Lund University. Institute of Microbiology,Russian Academy of Sciences, Moscow
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- Öquist, Mats (author)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
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- Svensson, Bo H. (author)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
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- Nykänen, Hannu (author)
- University of Kuopio, Department of Environmental Sciences,
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- Martikainen, Pertti (author)
- University of Kuopio, Department of Environmental Sciences,
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- Oskarsson, Hlynur (author)
- RALA - Agricultural Research Institute, Island
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Climate Impacts Group, Department of Ecology, Lund University Climate Impacts Group, Department of Ecology, Lund University Institute of Microbiology,Russian Academy of Sciences, Moscow (creator_code:org_t)
- English.
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
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- Globally, wetlands are at estimates ranging 115-237 Tg C4/yr1 the largest single source of the greenhouse gas CH4 to the atmosphere. Important feedback mechanisms on climate change arising from changing exchanges of C02 between the terrestrial biosphere and the atmosphere have recently been identified2. A related question is how will possible changes in the CH4 emissions from wetlands affect the further development of the greenhouse effect? Here we show using comparable methods in a wide range of wetlands ranging from Greenland to Siberia that regardless the dependency on soil moisture, plant productivity and other factors, temperature is the strongest control and predictor of CH4 emissions across both temporal and large spatial scales. Furthermore, we show that CH4 flux variations not explained by temperature can beattributed to differences in microbial substrate availability (expressed as the organic acid concentration in peat water). Combined, soil temperature and organic acid concentrations explains 99% of the variation in CH4 fluxes between the different sites. The temperature sensitivity of the CH4 emissions shown suggests a strong feedback mechanism on climatechange that should valid incorporation in developments of global circulation models.
Subject headings
- SAMHÄLLSVETENSKAP -- Annan samhällsvetenskap -- Tvärvetenskapliga studier inom samhällsvetenskap (hsv//swe)
- SOCIAL SCIENCES -- Other Social Sciences -- Social Sciences Interdisciplinary (hsv//eng)
Keyword
- INTERDISCIPLINARY RESEARCH AREAS
- TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN
Publication and Content Type
- vet (subject category)
- ovr (subject category)
To the university's database
- By the author/editor
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Christensen, Tor ...
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Joabsson, Anna
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Ström, Lena
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Panikov, Nicolai
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Mastepanov, Miha ...
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Öquist, Mats
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show more...
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Svensson, Bo H.
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Nykänen, Hannu
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Martikainen, Per ...
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Oskarsson, Hlynu ...
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- About the subject
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- SOCIAL SCIENCES
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SOCIAL SCIENCES
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and Other Social Sci ...
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and Social Sciences ...
- By the university
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Linköping University