NDLI: Detection of methane in the water column at gas and oil seep sites in central and southern Lake Baikal

Content Provider	Springer Nature Link
Author	Zakharenko, A. S. Pimev, N. V. Ivava, V. G. Zemskaya, T. I.
Copyright Year	2015
Abstract	Microbiological and biogeochemical investigation of the water column of oligotrophic Lake Baikal at the sites of the K2 and Bolshoi mud volcanoes and the Gorevoy Utes oil seep was carried out in July 2013. Total microbial numbers (TMN), cell numbers of type I and type II methanotrophs, and methane concentrations were measured; the rate of methane oxidation was determined. Methane concentrations in Lake Baikal water column varied from 0.09 to 1 μL/L, while methane oxidation rates varied from 0.007 to 0.9 nL/(L day). The highest rates of methane oxidation were revealed in the near-bottom water horizons at the sites of the Bolshoy mud volcano and the Gorevoy Utes oil seep. These were the sites where the most pronounced anomalies in methane concentration were also detected. TMN varied from 0.123 × 10$^{6}$ to 1.64 × 10$^{6}$ cells/mL. Methanotrophic bacteria were revealed in the water column at all sites, their abundance did not always correlate with methane concentrations and the rates of methane oxidation. Methanotrophs constituted not more than 1.63% of the total microbial number, with their highest abundance in the upper 200 m of the water column.
Starting Page	90
Ending Page	97
Page Count	8
File Format	PDF
ISSN	00262617
Journal	Microbiology
Volume Number	84
Issue Number	1
e-ISSN	16083237
Language	English
Publisher	Pleiades Publishing
Publisher Date	2015-02-04
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	methanotrophic bacteria methane oxidation methane concentration Lake Baikal Microbiology Medical Microbiology
Content Type	Text
Resource Type	Article
Subject	Microbiology Applied Microbiology and Biotechnology

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