THE CONTEMPORARY CONSTITUTION OF BIOCENOSISES OF SOME RIVERS SITED IN THE CENTRAL PART OF NORTH-WESTERN CAUCASUS BLACK SEA COAST
It was studied the biocenosises of rivers sited in the central part of the North-Western Caucasus Black Sea coast, such as Aderba, Mezyb', Vulan, Shapsucho, Nechepsucho and Psebe. There are data on taxonomic structure, abundance and biomass of these rivers' zoobenthos, plankton and fish communities. Composition of the organisms belonged to the dominating groups was defined too. It was calculated and analyzed the Shannon's and Woodiwiss' indexes. The results of our researches were allowed us to give the first complex estimation of these rivers' biocenosises. We defined the rives characterized by relatively favorable organization of different biocenosis components. It was established the main factors affecting the negative state of the studied rivers' biocenosises.