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dc.contributor.authorKlasek, Scott A.
dc.contributor.authorHong, Wei-Li
dc.contributor.authorTorres, Marta E.
dc.contributor.authorRoss, Stella
dc.contributor.authorHostetler, Katelyn
dc.contributor.authorPortnov, Alexey
dc.contributor.authorGründger, Friederike
dc.contributor.authorColwell, Frederick S.
dc.date.accessioned2021-11-23T11:41:05Z
dc.date.available2021-11-23T11:41:05Z
dc.date.issued2021-11-02
dc.description.abstractArchaea mediating anaerobic methane oxidation are key in preventing methane produced in marine sediments from reaching the hydrosphere; however, a complete understanding of how microbial communities in natural settings respond to changes in the flux of methane remains largely uncharacterized. We investigate microbial communities in gas hydrate-bearing seafloor mounds at Storfjordrenna, offshore Svalbard in the high Arctic, where we identify distinct methane concentration profiles that include steady-state, recently-increasing subsurface diffusive flux, and active gas seepage. Populations of anaerobic methanotrophs and sulfate-reducing bacteria were highest at the seep site, while decreased community diversity was associated with a recent increase in methane influx. Despite high methane fluxes and methanotroph doubling times estimated at 5–9 months, microbial community responses were largely synchronous with the advancement of methane into shallower sediment horizons. Together, these provide a framework for interpreting subseafloor microbial responses to methane escape in a warming Arctic Ocean.en_US
dc.identifier.citationKlasek, Hong H, Torres ME, Ross, Hostetler, Portnov A, Gründger F, Colwell. Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds. Nature Communications. 2021;12en_US
dc.identifier.cristinIDFRIDAID 1951035
dc.identifier.doi10.1038/s41467-021-26549-5
dc.identifier.issn2041-1723
dc.identifier.urihttps://hdl.handle.net/10037/23131
dc.language.isoengen_US
dc.publisherNatureen_US
dc.relation.journalNature Communications
dc.relation.projectIDNorges forskningsråd: 255150en_US
dc.relation.projectIDNorges forskningsråd: 223259en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/PETROMAKS2/255150/Norway/Norwegian margin fluid systems and methane- derived carbonate crusts - Recent scientific advances in service of petroleum exploration/NORCRUST/en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2021 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450en_US
dc.titleDistinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate moundsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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