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dc.contributor.authorCarrier, Vincent
dc.contributor.authorSvenning, Mette Marianne
dc.contributor.authorGründger, Friederike
dc.contributor.authorNiemann, Helge
dc.contributor.authorDessandier, Pierre-Antoine
dc.contributor.authorPanieri, Giuliana
dc.contributor.authorKalenitchenko, Dimitri
dc.date.accessioned2020-09-30T06:23:29Z
dc.date.available2020-09-30T06:23:29Z
dc.date.issued2020-09-24
dc.description.abstractCold seeps are characterized by high biomass, which is supported by the microbial oxidation of the available methane by capable microorganisms. The carbon is subsequently transferred to higher trophic levels. South of Svalbard, five geological mounds shaped by the formation of methane gas hydrates, have been recently located. Methane gas seeping activity has been observed on four of them, and flares were primarily concentrated at their summits. At three of these mounds, and along a distance gradient from their summit to their outskirt, we investigated the eukaryotic and prokaryotic biodiversity linked to 16S and 18S rDNA. Here we show that local methane seepage and other environmental conditions did affect the microbial community structure and composition. We could not demonstrate a community gradient from the summit to the edge of the mounds. Instead, a similar community structure in any methane-rich sediments could be retrieved at any location on these mounds. The oxidation of methane was largely driven by anaerobic methanotrophic Archaea-1 (ANME-1) and the communities also hosted high relative abundances of sulfate reducing bacterial groups although none demonstrated a clear co-occurrence with the predominance of ANME-1. Additional common taxa were observed and their abundances were likely benefiting from the end products of methane oxidation. Among these were sulfide-oxidizing Campilobacterota, organic matter degraders, such as Bathyarchaeota, Woesearchaeota, or thermoplasmatales marine benthic group D, and heterotrophic ciliates and Cercozoa.en_US
dc.identifier.citationCarrier V, Svenning MM, Gründger F, Niemann H, Dessandier P, Panieri G, Kalenitchenko D. The Impact of Methane on Microbial Communities at Marine Arctic Gas Hydrate Bearing Sediment. Frontiers in Microbiology. 2020;11(1932)en_US
dc.identifier.cristinIDFRIDAID 1833174
dc.identifier.doihttps://doi.org/10.3389/fmicb.2020.01932
dc.identifier.issn1664-302X
dc.identifier.urihttps://hdl.handle.net/10037/19507
dc.language.isoengen_US
dc.publisherFrontiers Mediaen_US
dc.relation.ispartofCarrier, V. (2021). Microbial community structure associated to Arctic cold seeps. (Doctoral thesis). <a href=https://hdl.handle.net/10037/22978>https://hdl.handle.net/10037/22978</a>.
dc.relation.journalFrontiers in Microbiology
dc.relation.projectIDNorges forskningsråd: 223259en_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 2020 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400en_US
dc.titleThe Impact of Methane on Microbial Communities at Marine Arctic Gas Hydrate Bearing Sedimenten_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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