Methane as an organic matter source and the trophic basis of a Laptev Sea cold seep microbial community
AS Savvichev, VV Kadnikov…�- Geomicrobiology�…, 2018 - Taylor & Francis
AS Savvichev, VV Kadnikov, MD Kravchishina, SV Galkin, AN Novigatskii, PA Sigalevich…
Geomicrobiology Journal, 2018•Taylor & FrancisAn area of cold methane seeps at the bottom of the Laptev Sea was investigated. High rates
of methane oxidation were revealed in the sediments and in the water column. Anaerobic
methane oxidation carried out by the ANME-2 a/b consortium was coupled to sulfate
reduction. Bacteria of the genera Sulfurovum and Arcobacter were the agents of the sulfur
cycle. Methane unconsumed in the sediments diffused into the near-bottom water, where it
was oxidized by methanotrophic bacteria. Methanotrophic activity was essential for�…
of methane oxidation were revealed in the sediments and in the water column. Anaerobic
methane oxidation carried out by the ANME-2 a/b consortium was coupled to sulfate
reduction. Bacteria of the genera Sulfurovum and Arcobacter were the agents of the sulfur
cycle. Methane unconsumed in the sediments diffused into the near-bottom water, where it
was oxidized by methanotrophic bacteria. Methanotrophic activity was essential for�…
Abstract
An area of cold methane seeps at the bottom of the Laptev Sea was investigated. High rates of methane oxidation were revealed in the sediments and in the water column. Anaerobic methane oxidation carried out by the ANME-2 a/b consortium was coupled to sulfate reduction. Bacteria of the genera Sulfurovum and Arcobacter were the agents of the sulfur cycle. Methane unconsumed in the sediments diffused into the near-bottom water, where it was oxidized by methanotrophic bacteria. Methanotrophic activity was essential for development of symbiotrophic tubeworms of the upper sediment layers, which were responsible for the process of bioturbation.
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