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dc.contributor.authorSteinle, Lea
dc.contributor.authorGraves, Carolyn A.
dc.contributor.authorTreude, Tina
dc.contributor.authorFerré, Benedicte
dc.contributor.authorBiastoch, Arne
dc.contributor.authorBussmann, Ingeborg
dc.contributor.authorBerndt, Christian
dc.contributor.authorKrastel, Sebastian
dc.contributor.authorJames, Rachel H.
dc.contributor.authorBehrens, Erik
dc.contributor.authorBöning, Claus W.
dc.contributor.authorGreinert, Jens
dc.contributor.authorSapart, Célia-Julia
dc.contributor.authorScheinert, Markus
dc.contributor.authorSommer, Stefan
dc.contributor.authorLehmann, Moritz F.
dc.contributor.authorNiemann, Helge
dc.date.accessioned2018-07-23T07:47:24Z
dc.date.available2018-07-23T07:47:24Z
dc.date.issued2015-04-20
dc.description.abstractLarge amounts of the greenhouse gas methane are released from the seabed to the water column, where it may be consumed by aerobic methanotrophic bacteria. The size and activity of methanotrophic communities, which determine the amount of methane consumed in the water column, are thought to be mainly controlled by nutrient and redox dynamics. Here, we report repeated measurements of methanotrophic activity and community size at methane seeps west of Svalbard, and relate them to physical water mass properties and modelled ocean currents. We show that cold bottom water, which contained a large number of aerobic methanotrophs, was displaced by warmer water with a considerably smaller methanotrophic community within days. Ocean current simulations using a global ocean/sea-ice model suggest that this water mass exchange is consistent with short-term variations in the meandering West Spitsbergen Current. We conclude that the shift from an offshore to a nearshore position of the current can rapidly and severely reduce methanotrophic activity in the water column. Strong fluctuating currents are common at many methane seep systems globally, and we suggest that they affect methane oxidation in the water column at other sites, too.en_US
dc.description.sponsorshipSwiss National Science Foundation German Research Foundation EU COST Action PERGAMON National Research Council of Canada German Federal Ministry for Education and Researchen_US
dc.descriptionAccepted manuscript version. Published version available at <a href=https://doi.org/10.1038/NGEO2420> https://doi.org/10.1038/NGEO2420</a>.en_US
dc.identifier.citationSteinle, L., Graves, C.A., Treude, T., Ferré, B., Biastoch, A., Bussmann, I., ... Niemann, H. (2015). Water column methanotrophy controlled by a rapid oceanographic switch. Nature Geoscience, 8(5), 378-382. https://doi.org/10.1038/NGEO2420en_US
dc.identifier.cristinIDFRIDAID 1239534
dc.identifier.doi10.1038/ngeo2420
dc.identifier.issn1752-0894
dc.identifier.issn1752-0908
dc.identifier.urihttps://hdl.handle.net/10037/13241
dc.language.isoengen_US
dc.publisherNature Publishing Groupen_US
dc.relation.journalNature Geoscience
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.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450en_US
dc.titleWater column methanotrophy controlled by a rapid oceanographic switchen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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