SPATIOTEMPORAL CHARACTERISTICS OF MICROBIOLOGICAL AND HYDROCHEMICAL INDICATORS OF THE QUALITY OF SURFACE WATERS OF THE UZH RIVER (UKRAINE)
Journal Title: Біоресурси і природокористування [Biological Resources and Nature Management] - Year 2018, Vol 10, Issue 5
Abstract
The Uzh River is the main source of water supply for the regional center - the city of Uzhhorod and the surrounding villages. Over the past decades, there has been a deterioration in the ecological status of the reservoir, which makes it necessary to carry out a series of studies to assess the quality of surface water and find solutions for restoring and preserving the natural state of the ecosystem. The purpose of this article is a comprehensive assessment of the water quality of the transboundary river Uzh from February 2016 to March 2017. The spatial-temporal characterization of chemical and microbiological indicators of the water quality of the river Uzh has been carried out. Positive correlative relationships between the latter during the year have been established. The study of the level of anthropogenic load in different areas of the river basin allowed to conditionally divide it into a technologically-transformed area, where there is a high level of pollution in terms of ammonium nitrogen characterized by exceeding of the standard values for water of fishery reservoirs by 18 times (9.19 mg /l), nitrites in 8 times (0.63 mg /l), formaldehyde in 6 times (0.06 mg /l) and phenols in 5 times (0.005 mg / l), the water quality is noticeably deteriorating upon microbial attributes. The territory of the Uzh River Basin within the regional center is urban, characterized by moderate pollution, in particular by increasing the index circle outside the city that reached a maximum of 142 CFU / in summer. The main influence on the ecological state of the reservoir in the lower reaches of the river is exerted by the physico-geographical conditions of the area, leading to pollution of the territory with organic compounds, the increase in concentrations of which closely correlates with the increase in the level of microbiological pollution. Therefore, conducted research allows to determine the most anthropogenic affected parts of the river basin and the sources of their pollution. Primarily, these results can serve to take measures to eliminate or reduce the negative impact, as well as to improve the monitoring systems for the quality of surface waters of the Uzh River, especially in frames of international cooperation.
Authors and Affiliations
M. V. Bilkei
Keywords
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- EP ID EP513738
- DOI 10.31548/bio2018.05.004
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