Open AccessANALYSIS OF THE STATE OF THE NURA RIVER FORAGE BASE
Author(s) -
Vladimir Nickolaevich Krainyuk,
Zh. Kurzhikaev,
A.S. Assylbekova,
G.K. Barinova
Publication year - 2021
Publication title -
chronos: estestvennye i tehničeskie nauki
Language(s) - English
Resource type - Journals
ISSN - 2712-9691
DOI - 10.52013/2712-9691-37-4-1
Subject(s) - zooplankton , biology , abundance (ecology) , benthic zone , crustacean , ecology , biomass (ecology) , population , chironomidae , forage , larva , demography , sociology
This article presents the results of research on the state of the Nura River forage base. The species composition, total mass, and abundance of zooplankton and zoobenthos were determined in the reservoirs. The zooplankton of the studied reservoirs is also diverse and includes widespread species that can be divided into 3 groups: rotifers, branched-moustached, oar-footed crustaceans. In the studied reservoirs, 40 taxa were noted as part of zooplankton, of which 11 species are rotifers, 16 are branched crustaceans, and 13 are oar-footed crustaceans. A.priodonta, P.remata and F.longiseta are dominant in the frequency of occurrence in rotifers, D.сuclata and D.galeata in branchiformes, and representatives of the genus Mesocyclops in copepods. The total species diversity of the benthic complex of the Nura River contains more than 100 species. The abundance of small bivalve mollusks of the families Euglessidae and Pisidiidae, which form the basis of benthic biomass, is very high in the rheotic areas. The bottom population of limnic and areas close to them in terms of characteristics is more diverse in species terms. The dominant species here are the chironomids Chironomidae spp., which had a high number. The forage base of the river sections corresponds to the environmental conditions and allows a certain herd of commercial fish to exist.