Bedynkova O. Water ecosystems: heavy metals migration (based on the river Zamchysko)

Water ecosystems: heavy metals migration (based on the river Zamchysko).This work deals with the impact of heavy metals on surface water of small rivers and heavy metals migration over water ecosystems feeding chain as well as elaboration of the measures to improve quality of water by neutralization of heavy metals with hydrobionts.In this work the main sources of heavy metals of the river Zamchysko are ascertained and fluctuation of the magnitudes of soils is traced over 40 years period. Based on results of the complex ecological assessment, it is observed that the core impact on the quality of waters of the river is made by certain specific substances such as Cu, Mn, Zn. There is both a quantitative and qualitative calculation of the level of anthropogenic load on the river ecosystem and its trend over the time period under review. Based on results of the analyses made, it is observed that the slit contains the highest proportion of heavy metals in water ecosystems but the advantage can be taken fromthe ability of heavy metals to bioaccumulation with macrofits and iphtiofauna to improve the quality of surface water. The mathematics model was built to obtain the equation of forecast calculation of the amount of heavy metals in the fishing products based on the proportion of heavy metals in the water.