Літоральний зоопланктон р. Удай у районі національного природного парку «пирятинський

The ecological-faunistic analysis of the littoral zooplankton of the middle part of the Uday River has been performed for the first time. The research was conducted to confirm a reason to create the National Nature Park «Pyriatynskiy» in this region. The species diversity of the littoral zooplankton obtained from six scientific stations on the Uday River was established. The specific features of the zooplankton’s distribution in biotopes in summer days were revealed. The comparative description of biotopical distribution of zooplankton of different stations is presented. The basic ecological indices of zooplankton populations (density and biomass) were determined.