Abstract —The seasonal changes of the photosynthetic processes of phytoplankton in three reservoirs of the Zvenigorod Biological Station named after S.N. Skadovsky of Moscow State University (ZBS MSU) were studied by using chlorophyll fluorescence. It was shown that a high level of photosynthetic activity was observed in the Olgin and Pozharny reservoirs (where a high level of phytoplankton was found) in the summer months. The high level of photosynthetic activity of algae was manifested in the high efficiency of electron transport (φ E o ) and the performance index of PSII ( PI ABS ). At a high level of the photosynthetic activity of phytoplankton in these reservoirs low rates of non-photochemical quenching ( NPQ ) were observed, whereas the efficiency of electron transport (φ E o ) of phytoplankton in Sterlyazhy reservoir was reduced in the summer. The dependence between the light reactions of phytoplankton and seasonal changes of hydrochemical composition of water and the species composition of phytoplankton in the studied reservoirs was shown. It is proposed to use fluorescence parameters ( PI ABS and φ E o ) as indicators of the state of phytoplankton in aquatic environments.

中文翻译：

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莫斯科国立大学兹韦尼戈尔站水库叶绿素荧光的季节变化

摘要——利用叶绿素荧光技术研究了以莫斯科国立大学SN Skadovsky 命名的Zvenigorod 生物站三个水库中浮游植物光合过程的季节性变化。结果表明，在夏季的几个月里，在 Olgin 和 Pozharny 水库（发现了大量浮游植物）中观察到了高水平的光合作用活动。藻类高水平的光合活性表现在电子传输效率高（φ E o ）和PSII（PI ABS ）性能指标上。在这些水库中浮游植物的高光合活性水平下，观察到非光化学猝灭 (NPQ) 率低，而 Sterlyazhy 水库中浮游植物的电子传输效率 (φ E o ) 在夏季降低。显示了浮游植物的光反应与水体水化学成分的季节性变化以及研究水库中浮游植物物种组成之间的依赖性。建议使用荧光参数（PI ABS 和 φ E o ）作为水生环境中浮游植物状态的指标。