The work is based on the results of long-term studies on phytoplankton and zooplankton in sodasaline lakes of the Uldz Gol-Torey basin (southeastern Trans-Baikal region). The unstable level regime of steppe lakes, due to climate fluctuations, leads to changes in the morphometric and hydrochemical regime of the lakes, and, as a consequence, to transformation of the plankton community. The goal of this work is to identify and analyze environmental factors that determine the structure of planktonic biocenoses in mineral lakes at different water-fill phases. According to statistical analysis of auxiliary models based on the redundancy analysis (RDA), the significance factors were mineralization and pH in the transgressive water-fill phase and pH in the regressive phase. Schematic drawings of interrelationships within the plankton community are constructed on the basis of the correlation matrix. There were nine interrelated components in the plankton natural associations in the high-water period and only five components at a low-water level. Chlo-rophyta was found to be a basic constructive element of the plankton community regardless of the water level. Euglenophyta, Bacillariophyta, and Cladocera were the second most significant elements in the structural organization during the full-water period and Charophyta, Dinophyta, Rotifera, and Copepoda were during the water-short period.

中文翻译：

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环境因子对盐湖不同注水期浮游生物群落结构的影响

这项工作是基于对Uldz Gol-Torey盆地（东南贝加尔湖地区）的sodasaline湖泊中浮游植物和浮游动物的长期研究结果得出的。由于气候波动，草原湖泊的水位状态不稳定，会导致湖泊形态和水化学状态的变化，从而导致浮游生物群落的转变。这项工作的目的是确定和分析环境因素，这些因素决定了不同充水阶段矿物湖中浮游生物岩画的结构。根据基于冗余分析（RDA）的辅助模型的统计分析，重要因素是海侵充水期的矿化度和pH值以及海归充填期的pH值。在相关矩阵的基础上，构造了浮游生物群落内部相互关系的示意图。在高水时期，浮游生物自然协会中有九个相互关联的成分，而在低水位时只有五个成分。无论水位高低，绿藻都被认为是浮游生物群落的基本构成要素。在全水时期，裸藻目，芽孢杆菌和克拉克藻是结构组织中第二重要的元素，而在短水时期，Charophyta，Dinophyta，Rotifera和Copepoda是结构组织中第二重要的元素。无论水位高低，绿藻都被认为是浮游生物群落的基本构成要素。在全水时期，裸藻目，芽孢杆菌和克拉克藻是结构组织中第二重要的元素，而在短水时期，Charophyta，Dinophyta，Rotifera和Copepoda是结构组织中第二重要的元素。无论水位高低，绿藻都被认为是浮游生物群落的基本构成要素。在全水时期，裸藻目，芽孢杆菌和克拉克藻是结构组织中第二重要的元素，而在短水时期，Charophyta，Dinophyta，Rotifera和Copepoda是结构组织中第二重要的元素。