TY JOUR TI MINERAL COMPOSITION OF SURFACE ROCKS AND DIVERSITY OF MICROPLANKTON IN FRESHWATER BODIES IN THE RECREATIONAL ZONE OF SEVASTOPOL KW minerals KW elemental analysis KW hydrochemistry KW sequential filtration KW microscopy KW freshwater microplankton KW biodiversity KW sustainability of biogeocenoses. JO Ekosistemy AU Kozincev, A.F. AU Bobko, N.I. AU Lishaev, V.N. AU Kuznecov, A.V. AU Anninskiy, B.E. PY 2025 IS 0 PB V.I. Vernadsky Crimean Federal University