Fedonyuk T. Theoretical and methodological principles of biomonitoring of water ecosystems in Ukrainian Polissya on the basis of evaluation of the stability of macrophyte development

The thesis presents theoretical and methodological principles of application of deferred and instantaneous biomonitoring of aquatic ecosystems on the basis of evaluation of stability of hydrobionts development. The scale and consequences of the degradation of water ecosystems in Ukrainian Polissya have been detected, and the areas of increased anthropogenic pressure have been identified which greatly affect the condition and number of aquatic macrophytes. New approaches to improving the water quality, based on phytothermic features of hydrobionts, are proposed. The main trends of forming water quality within Teteriv River ecological corridor on the basis of a retrospective analysis of water quality during the last 70 years have been determined in the work, the analytical part of the thesis deals with the main environmental problems of water biocenosis development. The peculiarities of the functioning of water ecosystems in Ukrainian Polissya have been specified, which determine the general differentiation of water quality indicators. A holistic picture of anthropogenic pressure on aquatic ecosystems within Teteriv River ecological corridor has been created, key factors and critical areas have been identified and recommendations for improving their condition have been developed.