Abstract
Rates of biogeochemical (microbial) processes of methane production and methane oxidation were determined in the bottom sediments and water column of the Black Sea. Aerobic bacterial oxidation of methane was confined to the upper 20–30 cm of Holocene bottom sediments of the shelf (0.7–259 ng C/(dm3 day)) and to 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 rates of anaerobic methane oxidation were recorded, comparable to or exceeding the rates 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.
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Gal'chenko, V.F., Lein, A.Y. & Ivanov, M.V. Rates of Microbial Production and Oxidation of Methane in the Bottom Sediments and Water Column of the Black Sea. Microbiology 73, 224–236 (2004). https://doi.org/10.1023/B:MICI.0000023992.82079.81
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DOI: https://doi.org/10.1023/B:MICI.0000023992.82079.81