Small mammal fauna as an evidence of environmental dynamics in the Holocene of Ukrainian area

Some tundra-steppe species were stable through all the stages. Ochotona pusilla and Spermophilus superciliosus persisted almost until present. O. pusilla, differing from its Pleistocene distribution, was confined to rocky biotopes, evidently, due to a change of herbage. A special case of range dynamics is represented by Spermophilus pygmaeus. A population of this Left Bank species had come to be isolated on the Dnieper Right Bank, seemingly, as a result of the Dnieper channel change.