Stepnoï sourok na pakhotn'kh zemlïakh Kazakhstana [Les marmottes des steppes des terres arables du Kazakhstan. Steppe marmots from arable lands of Kazakhstan].

Résumé

The available published data and original researchwork of the author in 1981-1998 revealed some peculiarities of the Marmota bobac settlements within the arable lands of Northern Kazakstan. The existing crop-rotation system and territories with optimal naturtal conditions favour the stable concentration of Marmota bobac along the margins of arable "squares", where they benefit from the border position. In les favourable natural conditions Marmota bobac occupy the territories adjacent to virgin lands. The total numbers of Marmota bobac in the fields of Kazakhstan may be as high as hundreds of thousands, and therefore they have to be taken into account in estimation of the species resources condition.