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dc.contributor.authorArgentino, Claudio
dc.contributor.authorWittig, Cathrin
dc.contributor.authorPeckmann, Jörn
dc.contributor.authorPanieri, Giuliana
dc.date.accessioned2023-08-09T11:09:13Z
dc.date.available2023-08-09T11:09:13Z
dc.date.issued2023-07-19
dc.description.abstractMethane-consuming microbes inhabiting marine methane seeps have recently been found to have the capacity to assimilate inorganic nitrogen, suggesting a previously unaccounted role in the global nitrogen cycle. Despite ex-situ experimental observations, definitive evidence of this process under in-situ conditions remains elusive, hindering the complete understanding of the controlling factors and magnitude of this process. We present the isotopic variations of organic carbon δ13Corg and total nitrogen δ15N values in two sediment cores collected from the gas hydrate-bearing Håkon Mosby Mud Volcano, SW Barents Sea (72°N, ∼1260 m water depth). We identified a stratigraphic interval containing methane-derived carbonates directly overlying a gas hydrate layer at 67 cm and typified by δ13Corg and δ15N as low as −42.0‰ and 1.2‰, respectively. Stable isotope mixing models confirm in-situ nitrogen uptake by methanotrophic consortia, contributing to up to 49.1 wt% of the local bulk sedimentary organic matter – a finding calling for reevaluation of the role of methane seeps in the oceanic nitrogen cycleen_US
dc.identifier.citationArgentino C, Wittig C, Peckmann J, Panieri G. Nitrogen uptake by methanotrophic consortia in deep-water gas hydrate-bearing sediments. Chemical Geology. 2023;636en_US
dc.identifier.cristinIDFRIDAID 2163397
dc.identifier.doi10.1016/j.chemgeo.2023.121638
dc.identifier.issn0009-2541
dc.identifier.issn1872-6836
dc.identifier.urihttps://hdl.handle.net/10037/29821
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalChemical Geology
dc.relation.projectIDNorges forskningsråd: 223259en_US
dc.relation.projectIDNorges forskningsråd: 287869en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleNitrogen uptake by methanotrophic consortia in deep-water gas hydrate-bearing sedimentsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution 4.0 International (CC BY 4.0)