Hydrochemical Regime of the River Chernaya (Crimea): Environmental Aspects

E. I. Ovsyany, N. A. Orekhova✉

Marine Hydrophysical Institute, Russian Academy of Sciences, Sevastopol, Russian Federation

✉ e-mail: natalia.orekhova@mhi-ras.ru

Abstract

The hydrochemical parameters’ characteristics of the river Chernaya and some its tributaries are represented based on the results of the observations in 2006–2010. The changes both of water hardness and the level of its contamination with the mineral nitrogen compounds (nitrates, nitrites and ammonium ions) are shown. The results of the investigations testify to rather noticeable anthropogenic effect (increasing at low norm of water content) upon the water chemical composition. The retrospective analysis shows that in the extreme cases mineralization, hardness, calcium and nutrient content levels in the river waters significantly exceed the hygiene and sanitary standards for drinking water. The river Chernaya waters (before the water supplying point) are constantly contaminated with the nutrients and organic matter brought by the tribute Baidarka and the slope drainage waters. Consistency of quality of the flood and low runoff waters inflowing the river Chernaya to the normative standards is assessed. Though water hardness exceeds the standards only in the extreme cases, the present trend towards growth of the river Chernaya water mineralization and contamination with organic matter and nutrients requires systemic solving of environmental problems.

Keywords

Crimea, the river Chernaya, hydrochemical characteristics, water hardness, calcium, nutrients, anthropogenic pressure

Acknowledgements

The analysis of carbonate system components of the river Chernaya waters was carried out within the framework of RFBR research project 16-35-60006 mol_a_dk “Long-term changes in the carbon cycle characteristics of the Sevastopol Bay”. The rest of the study was carried out according to state program No. 0827-2014-0010 “Complex interdisciplinary research of oceanographic processes determining the functioning and evolution of the Black Sea and the Sea of Azov ecosystems on the basis of modern methods for marine environment monitoring and grid technologies” (“Fundamental Oceanography” code).

Original russian text

Original Russian Text © E. I. Ovsyany, N. A. Orekhova, 2018, published in MORSKOY GIDROFIZICHESKIY ZHURNAL, Vol. 34, Iss. 1, pp. 82–94 (2018)

For citation

Ovsyany, E.I. and Orekhova, N.A., 2018. Hydrochemical Regime of the River Chernaya (Crimea): Environmental Aspects. Physical Oceanography, 25(1), pp. 77-88. doi:10.22449/1573-160X-2018-1-77-88

DOI

10.22449/1573-160X-2018-1-77-88

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