environmental assessment

Purpose.The testing the method of environmental assessment of surface water quality in terms of the use of biological indicators. Methods. Biological and hydrobiological. Results. To evaluate used quantitative and structural indicators of zoobenthos (TBI, BBІ), zooplankton (saprobity index) and phytoplankton (saprobity index, biomass and chlorophyll «a»). The results of the environmental assessment of the quality of waters of the river Seversky Donets River and its major tributaries within the Kharkiv region on biological indicators of surface water quality, which are used in the method of environmental assessment of surface water quality (edition of 2012). The values of the generalized biological index (ІБ) of the average values of indicators show that the water researched areas of the rivers belong to the II and III water quality classes and graded as "good" and "moderate" as "clean" and "contaminated" by the degree of purity (contamination). Areas with the worst values of biological indicators summarizing experiencing the greatest anthropogenic load. BBІ more sensitive reacted to anthropogenic pressure and had a larger range of changes than TBI. Conclusions. In assessing the ecological status of water bodies is absolutely necessary to consider the role of the biological component to display the actual state of aquatic ecosystems. In assessing the ecological status of water bodies is absolutely necessary to consider the role of the biological component to display the actual state of aquatic ecosystems, which reflects the degree of wellbeing ecosystem of the water body as a whole.

With the use of monitoring information were calculated index modular and integrated environmental assessment of surface water quality of the river Western Bug and its tributaries for the years 2013-2014, defined class and category of water quality in the basin of the Western Bug. Surface waters of the Western Bug and its tributaries correspond II - III class quality. Excess of pollutants recorded for ecological-sanitary indicators (NH4+, NO2-) and specific substances toxic effects (Fe).

Із використанням моніторингової інформації за 2014 рік здійснено інтегральну оцінку сучасного стану й просторових змін якості вод річки Сіверський Донець. Показано, що найкраща якість води, як за With the use of monitoring data for 2014 was carried out an integrated assessment of the current state and spatial changes in water quality of the river Siversky Donets. It is shown that the best water quality, according to the water management assessment (Index = 1.35) and the environmental (Ie = 2.99) was observed in Pecheniz'ke reservoir. The overall tendency of worsening water quality downstream of the Siversky Donets is noted. The worst water quality according to assessment for water management and the most significant decline in the quality of water (Index = 2.97, +1.62 from the previous paragraph, Ie = 3.92, +0.93) was recorded below the confluence riv. Udy. The worst water quality for environmental assessment (Ie = 4.32) in Index = 2.89 is noted below Izium.