TY JOUR TI Features of the Hydrological Regime of the Chaika Lake System, Assessment of Water Quality and Bottom Sediments KW national project “Ecology” KW water quality KW bottom sediments KW chemical composition KW Chaika lake system KW environmental rehabilitation JO Russian Journal of Earth Sciences AU Istomin, A.P. AU Mezhevova, A.S. AU Istomin, S.A. AU Khrenov, I.D. PY 2024 IS 24 PB Geophysical Center of the Russian Academy of Sciences