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    The temperature dependence of microbial community respiration is amplified by changes in species interactions.

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    Type
    Article
    Authors
    García, Francisca C. cc
    Clegg, Tom cc
    O'Neill, Daniel Barrios
    Warfield, Ruth
    Pawar, Samraat cc
    Yvon-Durocher, Gabriel cc
    KAUST Department
    Red Sea Research Center (RSRC)
    Date
    2023-02-02
    Embargo End Date
    2023-08-02
    Permanent link to this record
    http://hdl.handle.net/10754/687490
    
    Metadata
    Show full item record
    Abstract
    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-w
    Sponsors
    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 LLC
    Journal
    Nature microbiology
    DOI
    10.1038/s41564-022-01283-w
    PubMed ID
    36732470
    Additional Links
    https://www.nature.com/articles/s41564-022-01283-w
    ae974a485f413a2113503eed53cd6c53
    10.1038/s41564-022-01283-w
    Scopus Count
    Collections
    Articles; Red Sea Research Center (RSRC)

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