ub.xmlui.mirage2.page-structure.muninLogoub.xmlui.mirage2.page-structure.openResearchArchiveLogo
    • EnglishEnglish
    • norsknorsk
  • Velg spraakEnglish 
    • EnglishEnglish
    • norsknorsk
  • Administration/UB
View Item 
  •   Home
  • Fakultet for naturvitenskap og teknologi
  • Institutt for geovitenskap
  • Artikler, rapporter og annet (geovitenskap)
  • View Item
  •   Home
  • Fakultet for naturvitenskap og teknologi
  • Institutt for geovitenskap
  • Artikler, rapporter og annet (geovitenskap)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Biogeochemical evidence of anaerobic methane oxidation on active submarine mud volcanoes on the continental slope of the Canadian Beaufort Sea

Permanent link
https://hdl.handle.net/10037/14425
DOI
https://doi.org/10.5194/bg-15-7419-2018
Thumbnail
View/Open
article.pdf (4.912Mb)
Published version (PDF)
Date
2018-12-20
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Author
Lee, Dong-Hun; Kim, Jung-Hyun; Lee, Yung Mi; Stadnitskaia, Alina; Jin, Young Keun; Niemann, Helge; Kim, Young-Gyun; Shin, Kyung-Hoon
Abstract
In 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.
Description
Source at https://doi.org/10.5194/bg-15-7419-2018 .
Publisher
European Geosciences Union (EGU)
Citation
Lee, 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.
Metadata
Show full item record
Collections
  • Artikler, rapporter og annet (geovitenskap) [808]

Browse

Browse all of MuninCommunities & CollectionsAuthor listTitlesBy Issue DateBrowse this CollectionAuthor listTitlesBy Issue Date
Login

Statistics

View Usage Statistics
UiT

Munin is powered by DSpace

UiT The Arctic University of Norway
The University Library
uit.no/ub - munin@ub.uit.no

Accessibility statement (Norwegian only)