ПАВУКИ ДЕЯКИХ БІОТОПІВ НАЦІОНАЛЬНОГО ПРИРОДНОГО ПАРКУ «ДНІСТРОВСЬКИЙ КАНЬОН»

In 2010, a new National Nature Park Dnister Canyon has been created within the Nature Reserve Fund of Ukraine in its western part. This area with unique natural conditions provides habitats for a large number of rare species of plants and animals. Practically no information on spider fauna of the national park is available in scientific literature. In this paper spider species composition and biotopic distribution in the National Nature Park Dnister Canyon have been analyzed. 64 species of 15 families have been identified. We have found 58 species on the territory of the national park for the first time. The spiders of Lycosidae family dominate both in species and specimens number. It has been established by means of the index of relative quantitative reachness that the single species (Enoplognatha ovata (Clerck, 1757)) occurs everywhere and is locally numerous. Three other species namely Araniella cucurbitina (Clerk, 1757), Oedothorax retusus (Westring, 1851) and Misumena vatia (Clerck, 1757) occur everywhere being ordinary. Only single specimens of above 69 % of identified species have been found. Spider assemblage of the town beach in Zalishchyky hosted the largest number of rare species. Atypus piceus (Sulzer, 1776) has been found for the first time in West Podillia highland region. Thomisus onustus Walckenaer, 1805, previously known from Left-Bank Ukraine and from the Transcarpathian region has been found in the State botanical reserve Zhyzhavsky over the slope of the river Dnister. The highest indices of species diversity have been obtained for hortobionts inhabiting the area over the Dnister slope in the State botanical reserve Zhyzhavsky and town beach in Zalishchyky. The spider assemblage that inhabits the grassland of the area over the Dnister slope has been found to be the most unique. The majority of spider species of the National Nature Park Dnister Canyon are characterized not only by clear spatial differentiation in biocenosis, but they also inhabit certain territories within the national park. It has been established that various microbiotopic conditions, which provide grass and low bush vegetation, contribute to the high level of species diversity of hortobiont spiders. Anthropogenic influence leads to a decrease in the species diversity of herpetobionts. Key words: spiders, species composition, National Nature Park Dnister Canyon, Atypus piceus