Impact of Biological Rehabilitation by Algocenosis Correction Method on the Level of Pollution in the Matyr Reservoir

Abstract

The purpose is to develop a methodology for assessing the ecological risk of water bodies, allowing to estimate their seasonal pollution with determination of allowable measurement errors. Materials and methods. The water condition of the Matyr reservoir (Lipetsk Region) has been measured using a standardised water pollution index. Improvement of water quality through biological rehabilitation by correction of algocenosis has been shown. Results and discussion. The methodology of measuring the ecological risk of a water body state is developed, which allows estimating its state as a whole for a season. The conditions under which the ecological risk assessment can be made on the normalised scale of water pollution index assessment are found. Conclusions. It is shown that due to bioremediation the water quality class increased from polluted to moderately polluted and stabilised in this state. The assessment of the reservoir water condition as a whole for a year according to the methodology of ecological risk calculation gave the same seasonal average result – stable moderate pollution.