The syntaxonomic analysis of 94 geobotanical relevés of deciduous forests of the Right-Bank Ukraine with a rare species Scopolia carniolica was accomplished. They belong to the class Querco-Fagetea, order Fagetalia sylvaticae, alliances Alnion incanae, Tilio platyphylli-Acerion pseudoplatani, Asperulo-Fagion, Cephalanthero-Fagion, Carpinion betuli, and to 19 associations. Maple-lime-ash forests on stony soils of the alliance Tilio platyphylli-Acerion pseudoplatani are the phytocenological optimum of S. carniolica on study area. In contrast to Central Europe, S. carniolica in Ukraine is not present in heliotermophilic and acidophilic-mesotrophic syntaxa; in contrast to the Caucasus, it is absent in Alnus glutinosa forests.

Morphophysiological and hematological parameters of different species and ontogenesis types of mice rodents from the drained areas of the Chornobyl cooling pond were studied for the first time; comparative analysis, including data of control and stable populations of the Chornobyl exclusion zone, was performed. Radioecological characterization of the research sites was carried out; the contents of the main dose-forming radionuclides were determined; animals’ exposure doses were estimated. In all experimental groups, similar changes in the hematopoietic system were observed, however, pathological features were less pronounced in individuals from the drained areas of the cooling pond. It was revealed that in the animal body under the chronic low dose exposure activation of compensatory and recovery processes occurs along with the destructive processes. It has been shown that the lifetime increase in radiation exposure of mature animals causes the imbalance of bone marrow hematopoiesis with the gradual exhaustion of blood system potential.

One of the most obvious and long-las ng consequences of the Chornobyl nuclear power plant accident is the crea on of an exclusion zone and a zone of uncondi onal (compulsory) aliena on. The effect of succession is manifested in the fact that a significant part of aqua c and terrestrial ecosystems as of 1986 was ar ficial or semi-ar ficial systems that were under regulatory control by humans. Parasi c systems are one of the informa ve indicators of processes occurring in ecosystems. Any changes in the host popula on lead to changes in the parasite popula on. The degree of imbalance of the "parasite-host" system

РОЛЬ ПРІСНОВОДНИХ МОЛЮСКІВ ЧОРНОБИЛЬСЬКОГО РАДІАЦІЙНО-ЕКОЛОГІЧНОГО БІОСФЕРНОГО ЗАПОВІДНИКА У ПОШИРЕННІ ПАРАЗИТАРНИХ ХВОРОБ О. В. CЕМЕНКО, кандидат ветеринарних наук, доцент Національний університет біоресурсів і природокористування України Д. О. ВИШНЕВСЬКИЙ, завідувач наукового відділу Чорнобильський радіаційно-екологічний біосферний заповідник М. В. ГАЛАТ, кандидат ветеринарних наук, доцент Національний університет біоресурсів і природокористування України