МРНТИ 87.31.91                                                                                         №1 (2020г.)

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Onerkhan G., Durmekbaeva Sh. N.

The article presents the carried out systematic analysis and it has been established the specific structure and seasonal dynamics of algoflors on seasonal taxonomy of lake Big Chebachye. The microalgae found in lake Big Chebachye is made up of 84 species, of which 16 species are the indicator saprobe. The meaning of an index saprobe of the lake equals to 1.7, which proves, that waters of the lake are related to β-mesosaprob zone. It is revealed that the intensive growth of microalgae is observed in the summer season. It was determined that green and blue-green algae dominate in summers, and diatoms dominate in springs and autumns. According to the results of the biotesting, it was determined that the strain Chlorella sp-3K shows an average sensitivity to pollution of the lake Big Chebachye. Under complex estimation of specific structure of algocenoses and results of biotesting and the carried out hydrochemical researches, it was established, that waters of lake Big Chebachye are related to 3rd class of of
pollution level.
Keywords: algoflor, Lake Big Chebachye, bioindication, biotesting, indicatorsaprobity, stamm of Chlorella sp – 3K.