Fedyaeva L. A. RussiaAstrakhanAstrakhan State Natural Biosphere Reserve, 119 Naberezhnaya Tsarev, Astrakhan 414021, Russiashtepina.l@mail.ru Author's articles INFLUENCE OF MACROPHYTE DEVELOPMENT IN THE ZOOPLANKTON STRUCTURE FORMATION IN THE LOWER REACHES OF THE VOLGA RIVER DELTA