ASSESSMENT OF WATER QUALITY IN THE UPPER MZYMTA RIVER BY CHARACTERISTICS OF MACROZOOBENTHOS
https://doi.org/10.18384/2712-7621-2022-2-25-37
Abstract
Aim. The purpose of the paper is to assess the water quality in the upper Mzymta River in the summer period of 2019–2020 using hydrobiological indicators.
Methodology. The work was carried out in July 2019 and 2020 at two stations, which are characterized by varying degrees of the anthropogenic impact. Methods based on the analysis of macrozoobenthos data were used. The taxonomic composition and abundance of benthic invertebrates were determined. The Shannon diversity index, the Berger–Parker index, Woodiwiss, the Margalef diversity index, EPT, BMWP, Pantle–Buck saprobity index, and the index modified by M.V. Chertoprud saprobity index were calculated.
Results. The taxonomic composition of the zoobenthos in the upper the Mzymta River is mainly common for the ritral zone of the mountain rivers of the Black Sea region. New taxa were discovered for this watercourse: gastropods Physa fontinalis and Ancylus sp. The values of the calculated indices generally indicate the relative purity of the river water. An increase in the level of saprobity to the β-mesosaprobic level indicates an elevated, against the background, content of the organic substance. There is a tendency for some deterioration of the condition of the watercourse downstream, together with an increase in anthropogenic load.
Research implications. The obtained results can form the basis for assessing changes in the ecosystem of the river as a consequence of the anthropogenic impact. They can be used in the development of environmental recommendations for activities in the catchment area of this watercourse.
About the Authors
N. A. Potievskaya
Russian State Hydrometeorological University
Russian Federation
Russian Federation
Nadezhda A. Potievskaya – Master’s Degree Student, Department of Applied and System Ecology, Faculty of Ecology
ul. Voronezhskaya 79, St. Petersburg 192007
T. L. Gorbunova
Institute of Natural and Technical Systems, Branch in Sochi
Russian Federation
Russian Federation
Tatiana L. Gorbunova – Researcher, Laboratory of Environmental Economics and Ecology
Kurortnyi prosp. 99/18, Sochi 354023
N. V. Zueva
Russian State Hydrometeorological University
Russian Federation
Russian Federation
Nadezhda V. Zueva – Cand. Sci. (Geography), Assoc. Prof., Department of Applied and System Ecology, Faculty of Ecology
ul. Voronezhskaya 79, St. Petersburg 192007
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