Dumych O. Zooindication of Ukraine west artificial and natural water ecosystems state.

An object - the ecosystems of Ukraine west ponds and lakes. The aims are to investigate a zooplankton reaction on the action of organic and inorganic pollution of water, to establish the most informational parameters of its changes and to substantiate the principles of water environment's bioindication . The methods - standard ecological, hydrobiological, morpho-physiological, chemical, statistical, experimental microecosystems. The thesis is devoted to the study of invertebrate animals (Rotatoria, Cladocera, Copepoda) of Ukraine west ponds and lakes in consider of peculiarities of hydrochemical regime. An attention was paid to species composition, polymorphism and to the communities features - their quantity, biomass, diversity, complexity, stratification, metabolism and resistance. It is assessed water quality according to the hydrochemical and hydrobiological indices. It is estimated that ecological components evidence about increased anthropogenic eutrophication of water basins and their pollutionby blue-green algae exometabolites and heavy metals. Microhydrophauna is the most important component in bioindication. It is recommended to add to the number of prior indices, which identify the changes, occuring in ponds and lakes zooplankton communities under pollution impact, the following: the features of phenodeviation, diversity, quantity of dominants with mixed type of nutrition, the values of production of trophic level, the rate of its producing and destruction in order to elucidate the balance of organic substrate (the role of zooplankton in water reservoir ). Spheres of use are the fish industries, forecast of an ecological status of reservoirs, training courses.