Affiliation:
1. Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences
Abstract
An analysis of data on the content of 13C and 15N isotopes in the collagen of the bones of the small cave bear (Ursus (S.) rossicus Borissiak, 1930) from three regions of Western Siberia was carried out. The bones are dated to Marine Isotope Stage (MIS) 3. The bones of mature males and females were studied. Differences between some samples appear only in the δ15N values. Bears from all samples belong to the same trophic level. Trophic shifts have been established between females and males in one area and between males in two areas. The small cave bear of Western Siberia differed from the small cave bear of the Southern Urals in a much more predatory way of life. The level of differences between the bears of the Urals and Siberia corresponds to different trophic levels.
Publisher
The Russian Academy of Sciences