Microbial processes of carbon cycle as the base of food chain of Håkon Mosby Mud Volcano benthic community |
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| Authors: | N Pimenov A Savvichev I Rusanov A Lein A Egorov A Gebruk L Moskalev P Vogt |
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| Institution: | (1) Institute of Microbiology, Russian Academy of Sciences, Moscow pr. 60-Letya Oktyabrya, 7, 117811 Russia, RU;(2) Institute of Oceanology, Russian Academy of Sciences, Moscow, Krasikowa, 7, 117218 Russia, RU;(3) Naval Research Laboratory, Code 7420, Washington, DC 20375, USA, US |
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| Abstract: | Box and gravity cores recovered from the Håkon Mosby mud volcano (HMMV) during cruise 15 of the R/V Professor Logachev were analyzed for bacterial activity and benthic fauna distribution. The high bacterium number (up to 9.6×109 cells cm-3 of the sediment) and marked rates of sulfate reduction (up to 0.155?mg?S?dm-3?day-1) and methane oxidation (up to 9.9?μg?C?dm-3?day-1) were shown for the upper horizons of the sediments of the HMMV peripheral zone. The benthic community is characterized by the presence of two pogonophoran species, Oligobrachia sp. and Sclerolinum sp., harboring symbiotic methanotrophic bacteria. |
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