Zróżnicowanie regionalne i waloryzacja polskich parków narodowych pod względem występowania dużych i średnich ssaków

The paper presents research on the number of large and middle−sized mammal species and changes in their populations (1996−2005) in Polish national parks. The greatest number of native mammalian fauna was found in the Carpathian and the eastern national parks. Clearly the smallest number of mammalian species were recognised in the southern uplands, north−western and especially the Sudety region parks. Non−native species of large mammals, which were almost non−existent in the Carpathian parks, occurred in the remaining regions – primarily in the north−western part of the country. The number of native mammalian species in Polish national parks was positively correlated with longitude and in the mountains − negatively correlated with latitude.