Change in environmental water quality of Neman and Viliya rivers under the influence of city wastewater
https://doi.org/10.29235/1029-8940-2020-65-1-16-29
Abstract
The analysis of the biotic component in determining of the quality of surface water is becoming increasingly important. The aim of the work was to assess the ecological quality of the river ecosystems from the influence of wastewater discharges of the Grodno, Stolbtsy and Vileyka cities on the Neman and Viliya rivers based on the macrozoobenthos community.
The rare and protected species of hydrobionts from number of European countries live in the studied rivers. Among them are mollusks, coleoptera, caddis flies, and crustaceans. The stoneflies – highest priority indicator group of hydrobionts is missing in the Neman river. Mayflies and caddis flies are also poorly represented (2nd and 3rd indicator groups). The all three main indicator groups of aquatic organisms are presented in the Viliya river. The biotic indices are determined and the class of water purity of the studied rivers was calculated. In accordance with the EU Water Framework Directive, the cleanliness class has good and high value. It is concluded that the negative impact of wastewater from the cities of Grodno, Stolbtsy and Vileyka is of very local importance and weakly affects the biota and ecological quality of the water of the Neman and Viliya rivers.
Keywords
Supporting agencies: This work was financially supported by subprogram 01 “Rational use of natural resources and innovative technologies for the deep processing of natural resources” of the State Scientific and Technical Program “Nature Management and Environmental Risks” for 2016–2020.
About the Authors
V. M. Baitchorov
Scientific and Practical Center for Bioresources of the National Academy of Sciences of Belarus
Belarus
Belarus
Vladimir M. Baitchorov – D. Sc. (Biol.), Head of the sector
27, Akademicheskaya Str., 220072, Minsk
J. G. Giginyak
Scientific and Practical Center for Bioresources of the National Academy of Sciences of Belarus
Belarus
Belarus
Yuri G. Giginyak – Ph. D. (Biol.), Leading researcher
27, Akademicheskaya Str., 220072, Minsk
M. D. Moroz
Scientific and Practical Center for Bioresources of the National Academy of Sciences of Belarus
Belarus
Belarus
Michael D. Moroz – Ph. D. (Biol.), Leading researcher
27, Akademicheskaya Str., 220072, Minsk
I. J. Giginyak
Scientific and Practical Center for Bioresources of the National Academy of Sciences of Belarus
Belarus
Belarus
Irina J. Giginyak – Ph. D. (Biol.), Leading researcher
27, Akademicheskaya Str., 220072, Minsk
E. V. Korzun
Scientific and Practical Center for Bioresources of the National Academy of Sciences of Belarus
Belarus
Belarus
Egor V. Korzun – Senior researcher
27, Akademicheskaya Str., 220072, Minsk
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