Centric diatoms in the Kuibyshev reservoir

The study was carried out of phytoplankton samples collected in the Kuibyshev reservoir in 1989-1995. Methods of electronic microscopy allowed to determine the species composition of diatoms, to define a group of dominating species and reveal a species new for the plankton of the Volga basin hydrographical system. A full list of centric diatoms in the reservoir compiled with an account of earlier published works and a systematic status of some taxa with an account of modern nomenclature changes are discussed.