The temperature dependence of microbial community respiration is amplified by changes in species interactions.
Type
ArticleAuthors
García, Francisca C.
Clegg, Tom

O'Neill, Daniel Barrios
Warfield, Ruth
Pawar, Samraat

Yvon-Durocher, Gabriel

KAUST Department
Red Sea Research Center (RSRC)Date
2023-02-02Embargo End Date
2023-08-02Permanent link to this record
http://hdl.handle.net/10754/687490
Metadata
Show full item recordAbstract
Respiratory release of CO2 by microorganisms is one of the main components of the global carbon cycle. However, there are large uncertainties regarding the effects of climate warming on the respiration of microbial communities, owing to a lack of mechanistic, empirically tested theory that incorporates dynamic species interactions. We present a general mathematical model which predicts that thermal sensitivity of microbial community respiration increases as species interactions change from competition to facilitation (for example, commensalism, cooperation and mutualism). This is because facilitation disproportionately increases positive feedback between the thermal sensitivities of species-level metabolic and biomass accumulation rates at warmer temperatures. We experimentally validate our theoretical predictions in a community of eight bacterial taxa and show that a shift from competition to facilitation, after a month of co-adaptation, caused a 60% increase in the thermal sensitivity of respiration relative to de novo assembled communities that had not co-adapted. We propose that rapid changes in species interactions can substantially change the temperature dependence of microbial community respiration, which should be accounted for in future climate-carbon cycle models.Citation
García, F. C., Clegg, T., O’Neill, D. B., Warfield, R., Pawar, S., & Yvon-Durocher, G. (2023). The temperature dependence of microbial community respiration is amplified by changes in species interactions. Nature Microbiology, 8(2), 272–283. https://doi.org/10.1038/s41564-022-01283-wSponsors
This work was supported by a European Research Council Starting Grant awarded to G.Y.-D. (ERC StG 677278 TEMPDEP). T.C. was supported by the QMEE CDT, funded by NERC grant no. NE/P012345/1. S.P. was funded by Leverhulme Fellowship RF-2020-653\2 and UK national NERC grants NE/M020843/1 and NE/S000348/1.Publisher
Springer Science and Business Media LLCJournal
Nature microbiologyPubMed ID
36732470Additional Links
https://www.nature.com/articles/s41564-022-01283-wae974a485f413a2113503eed53cd6c53
10.1038/s41564-022-01283-w
Scopus Count
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