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Disproportionate increase in freshwater methane emissions induced by experimental warming
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Zhu, Yizhu, Purdy, Kevin J., Eyice, Özge, Shen, Lidong, Harpenslager, Sarah F., Yvon-Durocher, Gabriel, Dumbrell, Alex and Trimmer, Mark (2020) Disproportionate increase in freshwater methane emissions induced by experimental warming. Nature Climate Change, 10 (7). pp. 685-690. doi:10.1038/s41558-020-0824-y ISSN 1758-6798.
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WRAP-Disproportionate-increase-freshwater-methane-warming-Purdy-2020.pdf - Accepted Version - Requires a PDF viewer. Download (2050Kb) | Preview |
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Official URL: http://dx.doi.org/10.1038/s41558-020-0824-y
Abstract
Net emissions of the potent GHG methane from ecosystems represent the balance between microbial methane production (methanogenesis) and oxidation (methanotrophy), each with different sensitivities to temperature. How this balance will be altered by long-term global warming, especially in freshwaters that are major methane sources, remains unknown. Here we show that the experimental warming of artificial ponds over 11 years drives a disproportionate increase in methanogenesis over methanotrophy that increases the warming potential of the gases they emit. The increased methane emissions far exceed temperature-based predictions, driven by shifts in the methanogen community under warming, while the methanotroph community was conserved. Our experimentally induced increase in methane emissions from artificial ponds is, in part, reflected globally as a disproportionate increase in the capacity of naturally warmer ecosystems to emit more methane. Our findings indicate that as Earth warms, natural ecosystems will emit disproportionately more methane in a positive feedback warming loop.
Item Type: | Journal Article | ||||||||||||
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Subjects: | Q Science > QC Physics Q Science > QD Chemistry Q Science > QR Microbiology T Technology > TD Environmental technology. Sanitary engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||||||
Library of Congress Subject Headings (LCSH): | Greenhouse gas mitigation , Greenhouse gases, Methane, Atmospheric methane , Methane -- Metabolism, Methanotrophs , Global warming | ||||||||||||
Journal or Publication Title: | Nature Climate Change | ||||||||||||
Publisher: | Nature Publishing Group | ||||||||||||
ISSN: | 1758-6798 | ||||||||||||
Official Date: | 29 June 2020 | ||||||||||||
Dates: |
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Volume: | 10 | ||||||||||||
Number: | 7 | ||||||||||||
Page Range: | pp. 685-690 | ||||||||||||
DOI: | 10.1038/s41558-020-0824-y | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
Date of first compliant deposit: | 8 July 2020 | ||||||||||||
Date of first compliant Open Access: | 29 December 2020 | ||||||||||||
RIOXX Funder/Project Grant: |
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