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dc.contributor.authorBernhard, Joan M.
dc.contributor.authorPanieri, Giuliana
dc.date.accessioned2018-08-14T09:36:39Z
dc.date.available2018-08-14T09:36:39Z
dc.date.issued2018-07-13
dc.description.abstractForaminifera in sediments exposed to gas-hydrate dissociation are not expected to have cellular adaptations that facilitate inhabitation of chemosynthesis-based ecosystems because, to date, there are no known endemic seep foraminifera. To establish if foraminifera inhabit sediments impacted by gas-hydrate dissociation, we examined the cellular ultrastructure of <i>Melonis barleeanus</i> (Williamson, 1858) from the Vestnesa gas hydrate province (Arctic Ocean, west of Svalbard at ~79 °N; ~1200-m depth; n = 4). From sediments with gas hydrate indicators, living <i>M. barleeanus</i> had unusual pore plugs composed of a thick, fibrous meshwork; mitochondria were concentrated at the cell periphery, under pore plugs. While there was no evidence of endosymbioses with prokaryotes, most <i>M. barleeanus</i> specimens were associated with what appear to be Type I methanotrophic bacteria. One foraminifer had a particularly large bolus of these microbes concentrated near its aperture. This is the first documented instance of bona fide living <i>M. barleeanus</i> in gas-hydrate sediments and first documentation of a foraminifer living in close association with putative methanotrophs. Our observations have implications to paleoclimate records utilizing this foundational foraminiferal species.en_US
dc.description.sponsorshipWHOI Independent Study Award (Mellon Grant) NSF granten_US
dc.descriptionSource at <a href=https://doi.org/10.1038/s41598-018-28871-3> https://doi.org/10.1038/s41598-018-28871-3</a>. Licensed <a href=http://creativecommons.org/licenses/by-nc-nd/4.0/> CC BY-NC-ND 4.0.</a>en_US
dc.identifier.citationBernhard, J.M. & Panieri, G. (2018). Keystone Arctic paleoceanographic proxy association with putative methanotrophic bacteria. Scientific Reports, 8(1), 1-10. https://doi.org/10.1038/s41598-018-28871-3en_US
dc.identifier.cristinIDFRIDAID 1600665
dc.identifier.doi10.1038/s41598-018-28871-3
dc.identifier.issn2045-2322
dc.identifier.urihttps://hdl.handle.net/10037/13395
dc.language.isoengen_US
dc.publisherNature Publishing Groupen_US
dc.relation.journalScientific Reports
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/en_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//en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466en_US
dc.titleKeystone Arctic paleoceanographic proxy association with putative methanotrophic bacteriaen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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