Spatial Distribution of the Taxonomic Diversity of Phytoplankton and Bioindication of the Shallow Protected Lake Borovoe in the Burabay National Natural Park, Northern Kazakhstan
Barinova S. Krupa E. Khitrova E.
December 2022MDPI
Diversity
2022#14Issue 12
The Burabay National Natural Park unites six lakes located among the steppe landscape, with Lake Borovoe being the most visited among them. The phytoplankton of the protected Lake Borovoe was examined in the summer season of 2019, at eight stations, which were defined for the first time as the monitoring sites on the lake surface. Altogether, 72 algae and cyanobacteria species from seven taxonomic phyla were found in the Lake Borovoe phytoplankton during the study period. The most species-rich were three phyla: diatoms, green algae, and cyanobacteria. The average phytoplankton abundance was 3012.6 cells L−1, and biomass was 2383.41 mg L−1. The ecological status of the lake in 2019 was assessed based on the species richness, abundance, biomass, and calculated indices of organic pollution and toxic impact. The statistical mapping, calculated community similarity, correlation, and Redundancy Analysis (RDA) revealed zones affected by human impact. These were located in the lake shores and low-alkaline water with the saprobity index of 1.63–2.00. This is typical for naturally clean lakes, indicating the oligotrophic-to-mesotrophic status of the lake during the study period. The increase in cyanobacteria species in coastal communities can be associated with an increase in the biogenic load on the lake ecosystem in recent times. Therefore, our multivariate analysis allowed us to assess the ecological state of Lake Borovoe, which can be the result of the interaction of many external environmental factors, such as climatic conditions, long-term accumulation of organic substances, the intensity and duration of anthropogenic press, and internal lake processes such as the development of algae communities. The results suggest a tendency for the eutrophication of Lake Borovoe to increase because of pollution coming from the human impact zones on the lake shores.
abundance , bioindicators , biomass , Burabay National Natural Park , ecological mapping , Kazakhstan , Lake Borovoe , phytoplankton , species richness , statistics
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Institute of Evolution, University of Haifa, Mount Carmel, 199 Abba Khoushi Ave, Haifa, 3498838, Israel
Institute of Zoology, Ministry of Science and Higher Education of the Republic of Kazakhstan, 93 Al Farabi Str, Almaty, 050060, Kazakhstan
Kazakh Agency of Applied Ecology, 42 Amangeldy Str, Almaty, 050038, Kazakhstan
Institute of Evolution
Institute of Zoology
Kazakh Agency of Applied Ecology
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