Abstract

The structure and distribution of zooplankton of the Tsimlyansk Reservoir were studied in August–September 2018. It was found that the zooplankton abundance was halved in the upstream part of the reservoir (2.4 ± 0.8 g/m³) as compared to the zone near the dam of the Tsimlyansk hydroelectric power plant (1.2 ± 0.6 g/m³). Copepoda constituted 70% of the biomass. The Ponto-Caspian Heterocope caspia and the invasive species Calanipeda aquaedulcis, Thermocyclops taihokuensis, and Acanthocyclops americanus were abundant copepods. The dynamics of zooplankton abundance in the reservoir is analyzed for more than 65 years since its creation (1952–2018) based on the published data. A more than twofold (up to 2.1 ± 0.5 g/m³) increase in the community biomass was revealed in 2015–2018 as compared with the 40-year period up to 2013 (0.8 ± 0.1 g/m³). The trends in the dynamics of the zooplankton abundance in the Tsimlyansk Reservoir, including the importance of the Ponto-Caspian crustaceans and invaders from other regions, are discussed.

中文翻译：

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蒂姆连斯克水库（俄​​罗斯顿河）浮游动物的现状和长期动态

摘要

于2018年8月至9月研究了Tsimlyansk水库浮游动物的结构和分布。与水库附近的区域相比，发现水库上游的浮游动物丰度减少了一半（2.4±0.8 g / m ³）。辛姆利亚斯克水电站大坝（1.2±0.6 g / m ³）。pe足类占生物量的70％。的先斗里海Heterocope CASPIA和入侵物种Calanipeda aquaedulcis，Thermocyclops taihokuensis和Acanthocyclops美洲是丰富的co足类动物。根据已发布的数据，自库房（1952-2018年）成立以来，对库中浮游动物丰度的动态进行了65年以上的分析。甲两倍以上（高达2.1±0.5克/米³）在社会上生物量的增加被揭露于2015年至2018年，与40年期间高达2013（0.8±为0.1g / m相比³）。讨论了Tsimlyansk水库中浮游动物丰度的变化趋势，包括蓬图里海甲壳类和其他地区入侵者的重要性。