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Information × Registration Number 0214U006165, 0112U004316 , R & D reports Title Scientific expertise of the risks to existence and growth of biological communities in the Black Sea ecosystem as well as fields of gashydrates prospective exploration and mining, and also in the highly productive areas of methane gas seeps and redox-chemocline popup.stage_title Head Gulin M.B., Registration Date 13-02-2014 Organization Kovalevsky Institute of biology of southern seas NAS Ukraine popup.description2 Compilation of data regarding the accumulation of radioactive and stable isotopes by the macrocolonies of anaerobic bacteria-methanotrophs within the areas of gas discharge through the Black Sea seabed (seeps) has allowed to clarify information about the anatomy, growth rate as well as living characteristics of these recently discovered life forms. Increasing of thickness of the carbonate plates and columns - products of bacterial macrocolonies activity, can reach up to 0.65 mm/year and the rate of its apical growth - 0.7-4.0 mm/year. The important role of landscape forming it could be biogenic carbonate precipitation in the seeps and transformation of loose silty sediments into the massive coral-like reefs and also concentration of the numerous gas streams from the sea floor as the mutual collector of intensive gas seepage. Bacterial oxidation of methane could be involved into the trophic structure of the Black Sea chemocline. Also, it can be used as an indicator of the redox-zone borders. Product Description popup.authors Гулiн С.Б. Гуліна Л.В. Сідоров І.Г Чекалов В.П popup.nrat_date 2020-04-02 Close