Scientific Reports of the National University of Life and Environmental Sciences of Ukraine

Ecological assessment of the Zaporizhzya (Dniprovsky) reservoir

Y. Nikolenko, О. Fedonenko
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Abstract

Environmental assessment of water is an integral part of monitoring water bodies. It provides information about water as a component of the aquatic ecosystem, the habitat of hydrobionts and an essential part of the natural environment, which is necessary for establishing environmental standards for water quality and adoption of measures to improve the ecological state of water bodies. Currently, the Zaporizhzhia (Dnipro) reservoir is exposed to increased anthropogenic impact, which affects water quality. The ecological state of the reservoir is deteriorating, and mass algal bloom is observed. The work aims to provide an integrated environmental assessment of water quality in different sites of the Zaporizhzhia reservoir. The article calculates block indices and provides an environmental assessment of the water quality of the Zaporizhzhia reservoir according to the "Methodology for environmental assessment of surface water quality in the corresponding categories. The assessment of water quality by the criteria of contamination with salt composition components indicates that the water body condition is good at most of the studied points. The worst indicators were recorded in Samara Bay, where increased mineralization is observed for a long time. The trophic-saprobological block revealed to have the worst indicators and a high amplitude of index fluctuations. No significant deviations were observed in terms of the content of toxic and radiation exposure indicators throughout the entire studied water area, which makes it possible to assign water to the same class. It has been determined that the water quality of the Zaporizhzhia reservoir according to the average annual data is characterized as "good" in terms of the state and "clean, fairly clean" in terms of purity degree. However, during the study period, significant deviations from the average were observed, especially in the summer

Keywords

environmental assessment, index, water quality, pollution

Suggested citation
Nikolenko, Y., & Fedonenko, О. (2021). Ecological assessment of the Zaporizhzya (Dniprovsky) reservoir. Scientific Reports of the National University of Life and Environmental Sciences of Ukraine, 17(4),37-47. https://doi.org/dopovidi2021.04.004
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