Abstract

128 species of mollusks (78 Gastropoda and 50 Bivalvia) belonging to 27 families had been found in the Dnieper-Bug mouth region. Mollusks are the basic structural components of many communities. The strongest and most widespread communities in the Dnieper-Bug Liman (estuary) are Dreissena polymorpha (Pal.), Turricaspia triton (Eichv.), Unio tumidus Phil., and Mya arenaria (Chr.); in the lower reaches of the Dnieper these are Dr. bugensis Andr. and Viviparus ater (Chr. et Jan.). The biomass of the most productive Dr. bugensis community reaches 1.2 kg/m2. The whole population of zebra mussel may be considered as food benthos.

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