Articles | Volume 17, issue 22
https://doi.org/10.5194/bg-17-5849-2020
https://doi.org/10.5194/bg-17-5849-2020
Research article
 | 
27 Nov 2020
Research article |  | 27 Nov 2020

Hysteretic temperature sensitivity of wetland CH4 fluxes explained by substrate availability and microbial activity

Kuang-Yu Chang, William J. Riley, Patrick M. Crill, Robert F. Grant, and Scott R. Saleska

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (09 Sep 2020) by Tina Treude
AR by Kuang-Yu Chang on behalf of the Authors (09 Sep 2020)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (22 Sep 2020) by Tina Treude
RR by Anonymous Referee #1 (15 Oct 2020)
ED: Publish as is (16 Oct 2020) by Tina Treude
AR by Kuang-Yu Chang on behalf of the Authors (16 Oct 2020)  Manuscript 
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Short summary
Methane (CH4) is a strong greenhouse gas that can accelerate climate change and offset mitigation efforts. A key assumption embedded in many large-scale climate models is that ecosystem CH4 emissions can be estimated by fixed temperature relations. Here, we demonstrate that CH4 emissions cannot be parameterized by emergent temperature response alone due to variability driven by microbial and abiotic interactions. We also provide mechanistic understanding for observed CH4 emission hysteresis.
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