POLLUTION OF BOTTOM SEDIMENTS IN THE DONUZLAV LAKE
Abstract
The Donuzlav Lake, which is located in the western part of the Crimean peninsula, is actively exploited by man. The sand is extracted and mussels and oysters farms are operating. The eastern part of the lake is actively exploited. The western coast of the Donuzlav Lake is not subjected to anthropogenic pressure and is poorly studied. The study is aimed at the comprehensive assessment of pollution level for the priority classes of pollutants. This assessment includes the determination of the content of oil hydrocarbons in water and bottom sediments; chloroform-extractable substances and microelements (Cr, Co, Cu, Ni, Pb, Zn, V, Sr, Ti, Mn, Fe) in the bottom sediments of the north-western coast of the Donuzlav Lake. Concentrations of oil hydrocarbons in lake water do not exceed the MPC for fishery reservoirs. According to the content of chloroform-extractable substances, bottom sediments of the lake correspond to I–III levels of pollution. Concentrations of metals in marine sediments of the northwestern coast of the Donuzlav Lake differ from the adjacent areas of the open sea. Higher concentrations of microelements (Zn, Co, V, Sr, Ti) were recorded for the studied coastal water area while for the bottom sediments of the open sea this geochemical feature was not revealed. Basing on the 2017 data on the level of bottom sediments contamination with priority classes of pollutants, the Donuzlav Lake can be characterized as a reservoir with an intermediate pollution level.
About the Authors
E. A. Kotelyanets
FSBSI Marine Hydrophysical Institute of RAS.
Russian Federation
Shelf Hydrophysics Department, Junior Research Scientist; Lomonosov Moscow State University, Sevastopol Branch, engineer.
Russian Federation
Shelf Hydrophysics Department, Junior Research Scientist; Lomonosov Moscow State University, Sevastopol Branch, engineer.
O. V. Soloveva
A.O. Kovalevsky Institute of Marine Biological Research of RAS.
Russian Federation
Department of marine sanitary hydrobiology, Senior Research Scientist, PhD. in Biology.
Russian Federation
Department of marine sanitary hydrobiology, Senior Research Scientist, PhD. in Biology.
E. A. Tikhonova
A.O. Kovalevsky Institute of Marine Biological Research of RAS.
Russian Federation
Department of marine sanitary hydrobiology, Senior Research Scientist, PhD. in Biology.
Russian Federation
Department of marine sanitary hydrobiology, Senior Research Scientist, PhD. in Biology.
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Review
For citations:
Kotelyanets E.A., Soloveva O.V., Tikhonova E.A. POLLUTION OF BOTTOM SEDIMENTS IN THE DONUZLAV LAKE. Vestnik Moskovskogo universiteta. Seriya 5, Geografiya. 2019;(2):95-102. (In Russ.)
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