Nekotorie Voprosy ekologii stepnogo sourka na yushnom Oural. Some questions of the ecology of steppe marmot in the southern Urals (Analysis of the action of environmental factors) [Quelques questions d'écologie de la marmotte des steppes du sud de l'Oural (Analyse de l'effet des facteurs de milieu].

Résumé

On the example of study of the marmot population Marmota bobak) in Chelyabinsk Oblast in the summer of 1992, new information vas obtained on the effect of anthropogenic and ecological factors. And also their joint action on marmot settlement. lt is necessary to stuty population dynamics in order to exactly determine the level (number) of marmots to be taken by sex and age. Such study is the only scientifcally substantiated way to guarantee long-term use of biological resources. A greater number of marmots was noted outside the boundaries of the reserve than inside it, 33 and 10 individuals per 1 km2, respectively. The maximum number of marmots is found in the steppe, fewer, in perennial grasses, and the least, in fields of annual crops.