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dc.contributor.authorScheel, Maria
dc.contributor.authorZervas, Athanasios
dc.contributor.authorRijkers, Ruud
dc.contributor.authorTveit, Alexander Tøsdal
dc.contributor.authorEkelund, Flemming
dc.contributor.authorCampuzano Jiménez, Francisco
dc.contributor.authorChristensen, Torben R.
dc.contributor.authorJacobsen, Carsten S.
dc.date.accessioned2023-12-04T08:17:58Z
dc.date.available2023-12-04T08:17:58Z
dc.date.issued2023-10-05
dc.description.abstractPermafrost soils store a substantial part of the global soil carbon and nitrogen. However, global warming causes abrupt erosion and gradual thaw, which make these stocks vulnerable to microbial decomposition into greenhouse gases. Here, we investigated the microbial response to abrupt in situ permafrost thaw. We sequenced the total RNA of a 1 m deep soil core consisting of up to 26 500-year-old permafrost material from an active abrupt erosion site. We analysed the microbial community in the active layer soil, the recently thawed, and the intact permafrost, and found maximum RNA:DNA ratios in recently thawed permafrost indicating a high microbial activity. In thawed permafrost, potentially copiotrophic Burkholderiales and Sphingobacteriales, but also microbiome predators dominated the community. Overall, both thaw-dependent and long-term soil properties significantly correlated with changes in community composition, as did microbiome predator abundance. Bacterial predators were dominated in shallower depths by Myxococcota, while protozoa, especially Cercozoa and Ciliophora, almost tripled in relative abundance in thawed layers. Our findings highlight the ecological importance of a diverse interkingdom and active microbial community highly abundant in abruptly thawing permafrost, as well as predation as potential biological control mechanism.en_US
dc.identifier.citationScheel, Zervas, Rijkers, Tveit, Ekelund, Campuzano Jiménez, Christensen, Jacobsen. Abrupt permafrost thaw triggers activity of copiotrophs and microbiome predators. FEMS Microbiology Ecology. 2023;99(11)en_US
dc.identifier.cristinIDFRIDAID 2196310
dc.identifier.doi10.1093/femsec/fiad123
dc.identifier.issn0168-6496
dc.identifier.issn1574-6941
dc.identifier.urihttps://hdl.handle.net/10037/31913
dc.language.isoengen_US
dc.publisherOxford University Pressen_US
dc.relation.journalFEMS Microbiology Ecology
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0en_US
dc.rightsAttribution-NonCommercial 4.0 International (CC BY-NC 4.0)en_US
dc.titleAbrupt permafrost thaw triggers activity of copiotrophs and microbiome predatorsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
Except where otherwise noted, this item's license is described as Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)