title: [Intensities of microbial production and oxidation of methane in bottom sediments and water mass of the Black Sea].
abstract: Intensities of biogeochemical (microbial) processes of methane production and methane oxidation were determined in bottom sediments and water column of the Black Sea. Aerobic bacterial oxidation of methane is confined to the upper 20-30 cm of Holocene bottom sediments of the shelf (0.7-259 ng C/(dm3 day)) and oxygenated waters (0.2-45 ng C/(dm3 day)). In reduced sediments of the deep-sea zone and in the hydrogen sulfide-containing water column, considerable intensities of anaerobic methane oxidation were recorded, comparable to or exceeding the intensities of methane oxidation in oxygenated layers. From one fourth to one half of the methane formed in bottom sediments was oxidized immediately therein. The major part of the remaining methane was oxidized in the water column, and a smaller portion arrived in the atmosphere.
authors.affiliation: Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya 7, k. 2, Moscow, 117312 Russia.
authors.forename: V F
authors.initials: VF
authors.lastname: Gal'chenko
authors.forename: A Iu
authors.initials: AIu
authors.lastname: Lein
authors.forename: M V
authors.initials: MV
authors.lastname: Ivanov
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D018533:Biomass; D019015:Geologic Sediments / Q000032:analysis / Q000382:microbiology*; D006862:Hydrogen Sulfide; D008697:Methane / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*; D010084:Oxidation-Reduction; D012426:Russia; D012623:Seawater / Q000032:analysis / Q000382:microbiology*; D014871:Water Microbiology
chemical_list: D008697:Methane; D006862:Hydrogen Sulfide