[Evaluation of abundance of residents and immigration by irretrievable requisitioning of the bank vole (Myodes glareolus Schreber, 1780)].

The activity of average statistical species was approximated by normal distribution. This is provided by calculation of the part of resident animals without repeated hatching, i.e., the edge effect. Residence beyond the space covering 99% of species activity was considered as nonresidence. The appearance of nonresidence in general can be considered as "excursions" and "resettlement." The experiments on requisitioning of small settled animals from a preliminary marked site were carried out. It was shown that the number of settled small animals calculated using results of requisitioning corresponds to the number found during labeling with amendment to the edge effect, and immigration was constant and is not initiated by requisitioning. Only resettlements had an influence on the settlement of free space. The expected velocity of settling of the free space was calculated according to evaluation of the value of settlement and the share of "migrants" among immigrants. Second labeling of the place of hatching has shown that the expected and real paces of settlement are close.