Zoogeographical features of the south-eastern part of the Transbaikal region
Zoogeographical features of the south-eastern part of the Transbaikal region were revealed basing on the analysis of publications and collections, as well as the results of the authors field studies. The list of small mammals was revised and the areas of all species inhabiting the region were ascertained. It was found out that predominant species of small mammals of the south-eastern part of the Transbaikal region belong to three distribution types, i.e. taiga species entering from the north, steppe species entering from the south and the species widely occurring within the steppe zone of the south-eastern part of the Transbaikal region. The barrier role of the Shilka and Onon rivers which block the dissemination of a number of species was revealed.