Diversity of Hydrobionts in Different Types of Salt Lakes in Southeastern Transbaikalia in a Period of Changing Moisture

The results of a complex hydrochemical and hydrobiological study of salt lakes in southeastern Transbaikalia during the period of moisture change are presented. The studied lakes, according to geochemical classification, are chloride and soda types. The taxonomic diversity of aquatic biota decreases...

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Bibliographic Details
Published in:Inland water biology 2024-04, Vol.17 (2), p.209-222
Main Authors: Bazarova, B. B., Borzenko, S. V., Tashlykova, N. A., Afonina, E. Yu, Tsybekmitova, G. Ts, Matafonov, P. V., Kuklin, A. P.
Format: Article
Language:English
Subjects:
Algae
Aquatic animals
Aquatic biota
Aquatic plants
Biodiversity
Biomedical and Life Sciences
Biota
Chloride
Chlorides
Cyanobacteria
Diatoms
Freshwater & Marine Ecology
Freshwater plants
Geoecology/Natural Processes
Lakes
Life Sciences
Moisture
Phytoplankton
Plankton
Salt lakes
Soda lakes
Structure and Functioning of Aquatic Ecosystems
Taxonomy
Zoobenthos
Zooplankton
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Summary:The results of a complex hydrochemical and hydrobiological study of salt lakes in southeastern Transbaikalia during the period of moisture change are presented. The studied lakes, according to geochemical classification, are chloride and soda types. The taxonomic diversity of aquatic biota decreases, while the salinity increases and the hydrochemical type of lakes changes from soda oligo-mesohaline (4–16 g/L) to chloride eu-hyperhaline (33–70 g/L) and soda hyperhaline (128–231 g/L). In soda oligo-mesohaline and chloride lakes, the phytoplankton taxonomic composition is similar and is represented by green and diatom algae, as well as cyanobacteria. Submerged aquatic plants are represented by Stuckenia pectinata in soda oligo-mesohaline lakes. Ruppia maritima is found in the Dabasa-Nor chloride lake. In zooplankton and zoobenthos, rotifers and chironomids dominate respectively. Quantitative characteristics of phytoplankton in oligo-mesohaline lakes are lower than in hyperhaline soda and eu-hyperhaline chloride lakes. The phytomass of submerged aquatic plants, on the contrary, is higher in oligo-mesohaline lakes. In the hyperhaline soda lake Borzinskoye, zoobenthos and zooplankton organisms are represented by planktonobenthos species, namely Anostraca, with low abundance.
ISSN:1995-0829
1995-0837
DOI:10.1134/S1995082924020032