TY JOUR TI Assessment of the current state of the Northern Agrakhan by hydrochemical and hydrobiological indicators KW Northern Agrakhan KW hydrochemical KW hydrobiological indicators KW oxygen content KW phytoplankton KW zooplankton KW benthos KW seasonal changes KW reservoir JO Fisheries AU Ramazanova, J.. AU Anokhina, A.. AU Sudakova, N.. PY 2023 IS 2023 PB FSBI "TSUREN"