Studying the algoflora of the Ishim river and lake Taldykol

This article focuses on examining the algoflora of the Yesil River and Lake Taldykol in the vicinity of Astana. The article analyzes the species and biomass of algae, as well as the influence of various factors on these reservoirs. The state of the ecosystems of the Yesil River and Lake Taldykol was also assessed, revealing differences in water quality parameters. Optimal PH values (7.0-7.5) and oxygen (8-10 mg/l) were recorded in the upper part of the Ischium, which indicate a good condition of the water. However, in the Central and lower parts of the river there is an increased content of nitrates and phosphates, which indicates anthropogenic pollution. Low oxygen levels (2-3 mg/l), high turbidity and low biodiversity were observed in Lake Taldykol, which indicates a significant environmental burden. The results indicate the need for measures to improve the water quality in these reservoirs. The study of the algoflora of the Ishim River and Lake Taldykol revealed differences in the species composition of algae in different regions. The shallow waters of the Ishim River are dominated by green algae such as Chlorella vulgaris and Scenedesmus spp, in deeper regions diatoms such as Navicula spp, and Cyclotella spp. there are species. Cyanobacteria (M icrocystis aeruginosa) were found in the anthropogenic zone, indicating a high level of nutrients. In Lake Taldykol, green algae predominate on the coast, diatoms-in shallow water. Cyanobacteria were found in the recreational area and the center of the lake, indicating anthropogenic impact and blooming of the water.

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