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Freshwater Methane Emissions Offset the Continental Carbon Sink
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Limnology.
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2011 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 331, no 6013Article in journal (Refereed) Published
Abstract [en]

Inland waters (lakes, reservoirs, streams, and rivers) are often substantial methane (CH(4)) sources in the terrestrial landscape. They are, however, not yet well integrated in global greenhouse gas (GHG) budgets. Data from 474 freshwater ecosystems and the most recent global water area estimates indicate that freshwaters emit at least 103 teragrams of CH(4) year(-1), corresponding to 0.65 petagrams of C as carbon dioxide (CO(2)) equivalents year(-1), offsetting 25% of the estimated land carbon sink. Thus, the continental GHG sink may be considerably overestimated, and freshwaters need to be recognized as important in the global carbon cycle.

Place, publisher, year, edition, pages
2011. Vol. 331, no 6013
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Biological Sciences
URN: urn:nbn:se:uu:diva-144495DOI: 10.1126/science.1196808ISI: 000285974000030PubMedID: 21212349OAI: oai:DiVA.org:uu-144495DiVA: diva2:393734
Available from: 2011-02-01 Created: 2011-01-31 Last updated: 2014-01-17Bibliographically approved

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Tranvik, Lars J.
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