Ecological State of Aquatic Ecosystems of Ukraine Using the Dnipro River as an Example

• Published in: Journal of water chemistry and technology Vol. 41; no. 3; pp. 151 - 157
• Main Authors: Kovalenko, V. F., Goncharuk, V. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 2019; Springer Nature B.V
• Subjects: Algae; Algal blooms; Anthropogenic factors; Aquatic animals; Aquatic ecosystems; Aquatic Pollution; Dissolved oxygen; Earth and Environmental Science; Ecosystems; Environment; Eutrophication; Hydrology; Industrial Chemistry/Chemical Engineering; Natural waters; Pollution; Rivers; Species composition; Surface water; Theoretical Principles of Water Treatment Technology; Waste Water Technology; Water Industry/Water Technologies; Water Management; Water Pollution Control; Water Quality/Water Pollution; Ukraine; bioindication and biotesting of water quality; self-purification of natural water bodies; monitoring of aquatic ecosystems; climatic; hydrochemical and hydrobiological factors of formation of water quality; anthropogenic contamination
• ISSN: 1063-455X; 1934-936X
• DOI: 10.3103/S1063455X19030032

Main causes of deterioration of the quality of the surface waters in Ukraine: the changes in hydrological and hydrochemical characteristics associated with flow over-regulation and increasing anthropogenic pollution, and, as a result, a change in the species composition of hydrobionts, are studied using the Dnipro river as an example. Analyzed are the factors which lead to the degrading quality of natural waters as a result of the mass reproduction of unicellular algae (algal blooms), primarily blue-green ones, which reduce the concentration of dissolved oxygen and cause mass mortality of aquatic animals, especially in winter.