气候变化领域集成服务门户(CCPortal): Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds

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DOI	10.1038/s41467-021-26549-5
	Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds
	Klasek S.A.; Hong W.-L.; Torres M.E.; Ross S.; Hostetler K.; Portnov A.; Gründger F.; Colwell F.S.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Archaea mediating anaerobic methane oxidation are key in preventing methane produced in marine sediments from reaching the hydrosphere; however, a complete understanding of how microbial communities in natural settings respond to changes in the flux of methane remains largely uncharacterized. We investigate microbial communities in gas hydrate-bearing seafloor mounds at Storfjordrenna, offshore Svalbard in the high Arctic, where we identify distinct methane concentration profiles that include steady-state, recently-increasing subsurface diffusive flux, and active gas seepage. Populations of anaerobic methanotrophs and sulfate-reducing bacteria were highest at the seep site, while decreased community diversity was associated with a recent increase in methane influx. Despite high methane fluxes and methanotroph doubling times estimated at 5–9 months, microbial community responses were largely synchronous with the advancement of methane into shallower sediment horizons. Together, these provide a framework for interpreting subseafloor microbial responses to methane escape in a warming Arctic Ocean. © 2021, The Author(s).
语种	英语
scopus关键词	biogeochemistry; gas hydrate; methane; microbial activity; microbial community; oxidation; Arctic Ocean; Archaea
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250585
作者单位	Department of Microbiology, Oregon State University, Corvallis, OR, United States; Department of Botany, University of Wyoming, Laramie, WY, United States; Department of Geological Sciences, Stockholm University, Stockholm, Sweden; Centre for Arctic Gas Hydrate, Environment and Climate (CAGE), Department of Geosciences, UiT The Arctic University of Norway, Tromsø, N-9037, Norway; Baltic Sea Centre, Stockholm University, Stockholm, Sweden; College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States; University of Texas Institute for Geophysics, Austin, TX, United States; Department of Biology, Arctic Research Centre, Aarhus University, Aarhus, Denmark
推荐引用方式 GB/T 7714	Klasek S.A.,Hong W.-L.,Torres M.E.,et al. Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds[J],2021,12(1).
APA	Klasek S.A..,Hong W.-L..,Torres M.E..,Ross S..,Hostetler K..,...&Colwell F.S..(2021).Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds.Nature Communications,12(1).
MLA	Klasek S.A.,et al."Distinct methane-dependent biogeochemical states in Arctic seafloor gas hydrate mounds".Nature Communications 12.1(2021).