Home – Home – Jornals – Contemporary Problems of Ecology 2012 number 1

Original data on the diameter of bear trees and the trees in the stand were collected during the years 2002-2009 at the Upper Pechora and in the Western Sayan. The data were processed using the two-sample Stident's test and correlation analysis. For comparison, the published data on the thickness of bear trees are involved. Brown bears use the trees 2 to 89 cm in diameter for marking. As a rule, bear trees exceed the trees of the stand in the average diameter, which is the evidence of the selectivity of bears for the trees of larger diameter for marking.