INFLUENCE OF ENVIRONMENTAL FACTORS ON THE PLANKTON COMMUNITIES STRUCTURE IN SALINE LAKES AT DIFFERENT WATER PHASES
Abstract
The work is based on the results of long-term studies of phytoplankton and zooplankton in soda-saline lakes of the Uldza-Torey basin (South-Eastern Transbaikalia). The unstable level regime of steppe lakes, due to climatic fluctuations, leads to the lake morphometric and hydrochemical regime changes, and, as a consequence, to the plankton community’s transformation. The aim of this work is to identify and analyze environmental factors that determine the structure of planktonic biocenoses in mineral lakes at the different water 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 phase, pH was in the regressive phase. The interconnection schematic drawings within the plankton community are constructed on the basis of the correlation matrix. There were nine interrelated components in the plankton natural associations in high water level period and only five components were in low water level. Algae Chlorophyta were the basic structure-forming element of plankton community regardless of the water level periods. Euglenophyta, Bacillariophyta, Cladocera were the second most significant elements in the structural organization in high water level years and Charophyta, Dinophyta, Rotifera, Copepoda were in years of low water level.
About the Authors
E. Yu. Afonina
Institute of Natural Resources, Ecology and Cryology, Siberian Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Nedorezova str. 16a, Chita, 672014
N. A. Tashlykova
Institute of Natural Resources, Ecology and Cryology, Siberian Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Nedorezova str. 16a, Chita, 672014
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Review
For citations:
Afonina E.Yu., Tashlykova N.A. INFLUENCE OF ENVIRONMENTAL FACTORS ON THE PLANKTON COMMUNITIES STRUCTURE IN SALINE LAKES AT DIFFERENT WATER PHASES. Vestnik Moskovskogo universiteta. Seriya 16. Biologiya. 2019;74(1):3-9. (In Russ.)
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