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The studies on the present state of the bat fauna in the Roztocze (SE Poland) were carried out for several years (1987-1990). A total of 14 species were recorded. Myotis dasycneme is new to the fauna of the Roztocze. Myotis bechsteini and Eptesicus nilssoni were not recorded in the present investigation, although they had been found in this region dozens years ago. A comparison of qualitative data from several biotopes was made.
A study was made of the use of space by two groups (each of 6 animals) of adult edible dormice (G. glis) at the sites of their origin and where they were released. The reintroduction took place in Szczeciński Landscape Park (north-western Poland; 53°17’N, 14°46’E). The source sites for the animals were in the Sie rakowski Landscape Park (western Poland; 52°38’N, 16°07’E) and a nature reserve “Buczyna Szprotawska” in south-western Poland (51°30’N, 15°40’E). All three sites had dense and extensive mixed forests. At release and source sites, dormice were radio-tracked during 10 successive nights between 20.00 and 05.00 at 1-hour intervals. At the source sites, the mean distance travelled per night and mean home range (95% Minimum Convex Polygon) (MCP) tended to be larger in males than in females but not significantly. At the release sites, the mean distance travelled per night and mean home range were significantly larger in females than in males. The mean distance travelled per night by males and their mean home range size did not differ significantly between source and release sites (although distances were larger at the source sites (source: 458 m; release: 265 m) and home ranges larger at the release sites (source: 1.3 ha; release: 1.8 ha). In contrast, the mean female distance travelled per night (source: 214 m; release: 404 m) and mean home range (source: 0.3 ha; release: 3.5 ha) were significantly larger at the release site than at the source sites.
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