FEATURES OF BIOLOGYOF THE BROWN BEAR (URSUS ARCTOS L.)IN THE SOUTH-EAST OF WESTERN SIBERIA (TOMSK REGION)

Abstract

On the territory of the south-east of Western Siberia (Tomsk Region), the features of the species biology are analyzed: abundance, dendroactivity, biotopic confinement, the device of a dens. Scuffs and scraps of bark left by the bear are marked on fir - 80 % and cedar -20 %. Bears were marked mainly by trees that are in the edge of the forest stand along the fringes, forest roads, winter roads and quarter walkways, animal paths. Traces of bear activity located at a height of 156 cm to 242 cm indicate the manifestation of food, comfortable and marking dendroactivity. The burlogs are confined to hard-to-reach places - forest heaps, cuttings, found in coniferous forests eaten by silkworms, on old garbage. The bergs are located beneath the roots of large trees: birches, cedar, less often under fallen trees, ovaries and fallen trees of cedar, aspen. The exit from the den is mainly directed to the south. The internal dimensions of the den often vary: length from 150 to 350 cm, height - 80-215 cm, width - 130-300 cm. In the litter - grass (33.3 %), moss (21.6 %), leaves (17, 6 %), branches (9.8 %), needles (7.8 %).