00648naa#a2200181#i#450# EN\\bibl\100596 20251215085301.1 2073-5529 20250701b2025####ek#y0engy0150####ca RU Long-term dynamics of the phytoplankton communities structural organi-zation indicators in the western part of the Northern Caspian Sea Journal article Astrakhan Astrakhan State Technical University 2025 6 с. Journal article local Планктон. 574.583 Mikhajlova Anna Viktorovna Ardabyeva Alevtina Georgievna vestnik.astu.ru