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dc.contributor.authorLee, Dong-Hun
dc.contributor.authorKim, Jung-Hyun
dc.contributor.authorLee, Yung Mi
dc.contributor.authorStadnitskaia, Alina
dc.contributor.authorJin, Young Keun
dc.contributor.authorNiemann, Helge
dc.contributor.authorKim, Young-Gyun
dc.contributor.authorShin, Kyung-Hoon
dc.date.accessioned2019-01-11T11:58:00Z
dc.date.available2019-01-11T11:58:00Z
dc.date.issued2018-12-20
dc.description.abstractIn this study, we report lipid biomarker patterns and phylogenetic identities of key microbial communities mediating anaerobic oxidation of methane (AOM) in active mud volcanoes (MVs) on the continental slope of the Canadian Beaufort Sea. The carbon isotopic compositions (δ13C) of sn-2- and sn-3-hydroxyarchaeol showed the highly 13C-depleted values (−114 ‰ to −82 ‰) associated with a steep depletion in sulfate concentrations within 0.7 m of sediment depths. This suggested the presence of methanotrophic archaea involved in sulfate-dependent AOM, albeit in a small amount. The ratio of sn-2-hydroxyarchaeol to archaeol (> 1) and operational taxonomic units (OTUs) indicated that the anaerobic methanotrophic archaea (ANME) clades ANME-2c and ANME-3 were involved in AOM. Higher δ13C values of archaeol and biphytanes (BPs; −55.2±10.0 ‰ and −39.3±13.0 ‰, respectively) suggested that archaeal communities were also assimilating AOM-derived inorganic carbon. Furthermore, the distinct distribution patterns of methanotrophs in the three MVs appears to be associated with varying intensities of ascending gas fluids. Consequently, our results suggest that the niche diversification of active mud volcanoes has shaped distinct archaeal communities that play important roles in AOM in the Beaufort Sea.en_US
dc.descriptionSource at <a href= https://doi.org/10.5194/bg-15-7419-2018> https://doi.org/10.5194/bg-15-7419-2018 </a>.en_US
dc.identifier.citationLee, D.-H., Kim, J.-H., Lee, Y. M., Stadnitskaia, A., Jin, Y. K., Niemann, H., … Shin, K.-H. (2018). Biogeochemical evidence of anaerobic methane oxidation on active submarine mud volcanoes on the continental slope of the Canadian Beaufort Sea. Biogeosciences, 15, 7419-7433. https://doi.org/10.5194/bg-15-7419-2018.en_US
dc.identifier.cristinIDFRIDAID 1651360
dc.identifier.doi10.5194/bg-15-7419-2018
dc.identifier.issn1726-4170
dc.identifier.issn1726-4189
dc.identifier.urihttps://hdl.handle.net/10037/14425
dc.language.isoengen_US
dc.publisherEuropean Geosciences Union (EGU)en_US
dc.relation.journalBiogeosciences
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Mineralogy, petrology, geochemistry: 462en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Mineralogi, petrologi, geokjemi: 462en_US
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497en_US
dc.titleBiogeochemical evidence of anaerobic methane oxidation on active submarine mud volcanoes on the continental slope of the Canadian Beaufort Seaen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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