Analysis of synantropic flora of Yavoriv national nature park

Synantropic flora of Yavoriv National Nature Park located within the Ukrainian Roztochia was studied. Flora contains 225 species which belong to 147 genera and 44 families. Mediterranean families occupy first places in the list of the most rich in synantropic species families Аsteraceae, Lamiaceae, Brassicaceae, Fabaceae, Аpiaсеае. The role of the boreal families Poaceae, Rosaceae and Ranunculaceae which are common in the park’s flora decreases. Synantropic species are not observed among the native members of families Cyperaceae, Liliaceae, Orchidaceae. Such proportion of synantropic families can be accounted by considerable xerothermy of antropogenically transformed ecotops of the park in which these synantropic species occur. In the synantropic flora of Yavoriv National Nature Park, the autochthonous fraction comprising 43 species, is a dominating one. Among the apophytes, the number of evapophytes and gemiapophytes (50 and 53 species, respectively) is almost equal. The last 40 species are inconstant apophytes. Allochtonous fraction is less than autochthonic one. It contains 82 species of which 59 species are archeophytes and 24 are kenophytes. A large number of apophytes and archeophytes in the synantropic flora which have been well naturalized under the conditions of the park, as well as many one- and few-species families indicate great variety, stability, its ancient formation, and low level of synantropization.