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Diverse sediment mi...
Diverse sediment microbiota shape methane emission temperature sensitivity in Arctic lakes
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Emerson, Joanne B. (author)
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Varner, Ruth K. (author)
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- Wik, Martin (author)
- Stockholms universitet,Institutionen för geologiska vetenskaper
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Parks, Donovan H. (author)
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Neumann, Rebecca B. (author)
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Johnson, Joel E. (author)
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Singleton, Caitlin M. (author)
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Woodcroft, Ben J. (author)
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Tollerson II, Rodney (author)
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Owusu-Dommey, Akosua (author)
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Binder, Morgan (author)
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Freitas, Nancy L. (author)
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- Crill, Patrick M. (author)
- Stockholms universitet,Institutionen för geologiska vetenskaper
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Saleska, Scott R. (author)
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Tyson, Gene W. (author)
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Rich, Virginia I. (author)
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(creator_code:org_t)
- 2021-10-05
- 2021
- English.
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In: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 12
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https://doi.org/10.1...
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https://www.nature.c...
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Abstract
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- Northern post-glacial lakes are significant, increasing sources of atmospheric carbon through ebullition (bubbling) of microbially-produced methane (CH4) from sediments. Ebullitive CH4 flux correlates strongly with temperature, reflecting that solar radiation drives emissions. However, here we show that the slope of the temperature-CH4 flux relationship differs spatially across two post-glacial lakes in Sweden. We compared these CH4 emission patterns with sediment microbial (metagenomic and amplicon), isotopic, and geochemical data. The temperature-associated increase in CH4 emissions was greater in lake middles—where methanogens were more abundant—than edges, and sediment communities were distinct between edges and middles. Microbial abundances, including those of CH4-cycling microorganisms and syntrophs, were predictive of porewater CH4 concentrations. Results suggest that deeper lake regions, which currently emit less CH4 than shallower edges, could add substantially to CH4 emissions in a warmer Arctic and that CH4 emission predictions may be improved by accounting for spatial variations in sediment microbiota.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Emerson, Joanne ...
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Varner, Ruth K.
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Wik, Martin
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Parks, Donovan H ...
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Neumann, Rebecca ...
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Johnson, Joel E.
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show more...
-
Singleton, Caitl ...
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Woodcroft, Ben J ...
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Tollerson II, Ro ...
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Owusu-Dommey, Ak ...
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Binder, Morgan
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Freitas, Nancy L ...
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Crill, Patrick M ...
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Saleska, Scott R ...
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Tyson, Gene W.
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Rich, Virginia I ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
- Articles in the publication
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Nature Communica ...
- By the university
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Stockholm University