Abstract

The results of a study of phytoplankton in Taganrog Bay in the Sea of Azov and the downstream reaches of the Don River carried out in January–November 2017 are presented. A total of 210 species of eukaryotic algae and cyanoprokaryotes are identified. An analysis of the taxonomic, ecological, and geographical composition of the plankton algal flora and seasonal dynamics of biomass of phytoplankton taxonomic and size structures has revealed no changes in the ratio of large taxonomic and ecological–geographic groups in the algal flora when compared with previous years (1980s to early 2000s). However, the proportion of myxotrophic phytophagellates, cyanoprokaryotes from the planktotrichet complex, and small species increased in algal communities. It is shown that the water salinity is the main factor influencing the formation of species richness and total biomass and structure of phytoplankton. The maximum diversity and biomass of phytoplankton are recorded in the horohalinicum zone.

中文翻译：

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气候变化下亚速海和塔河下游河段塔甘罗格湾浮游植物的组成和季节演替

摘要

本文介绍了2017年1月至11月在亚速海的塔甘罗格湾和唐河下游的浮游植物研究结果。总共鉴定出210种真核藻类和原核生物。对浮游生物藻类群的分类学，生态学和地理组成以及浮游植物分类学和规模结构生物量的季节性动态的分析显示，与以前的相比，藻类植物群中大型分类学和生态地理学组群的比例没有变化。年（1980年代至2000年代初）。然而，藻类群落中的营养缺陷型植物脂肪酸酯，来自浮游生物的氰基原核生物和小物种的比例增加。结果表明，水盐度是影响物种丰富度和总生物量及浮游植物结构的主要因素。在horohalinicum区域记录了浮游植物的最大多样性和生物量。