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Information × Registration Number 0306U003506, 0103U001050 , R & D reports Title Studying the biogeochemical regularities in formation of fluxes of radioactive, mineral, organic matter of natural and technogenic origin and conditioned by them ecological risk for critical species populations in the Black sea. popup.stage_title Аналіз трендів змін природних і техногенних потоків у Чорному морі внаслідок дії кліматичного і антропогенного факторів. Head Polikarpov Gennadiy Grigorevich, Registration Date 25-04-2006 Organization Kovalevsky Institute of biology of the southern seas, NAS of Ukraine popup.description2 The concentrations of 90Sr , 137Cs , 239+240Pu , PCB, Hg and 210Po in water and mussels have been determined at the Crimean shelf. Forecast of Sr 90 and Cs 137 discharge from the Black sea through Bosphorus has been done. Method of the bottom sediments dating by Sr 90 profiles has been worked out. Criteria and algorithm for evaluation of the ecological risk for hydrobionts (species) "critical" populations have been proposed. It has been stated, that methane flux into water from the Black sea north-western part bottom sediments made 5.2 Х 108 m3 Х year-1; up to 20% of this volume went to the atmosphere. The role of critical macrozoobenthos species with different nutrition types and heterotrophic bacteria in transformation of the fluxes of oil hydrocarbons and organic compounds of the most distributed forms in the coastal zone of the sea has been estimated5635 Product Description popup.authors popup.nrat_date 2020-04-02 Close