Accumulation of natural radionuclides (7Be, 210Pb) and micro-elements in mosses,lichens and cedar and larch needles in the Arctic Western Siberia

Environmental Science and Pollution Research - This is a study of the atmospheric-origin natural radionuclides (7Be and 210Pb) and a wide range of micro- and macro-element accumulation in mosses,...     

The ecology of quaternary mammals in the Urals

Special aspects of solving certain key problems in the ecology of Quaternary mammals using materials from the Ural region are considered. Possibilities and limitations accounted for by specific features of the region are analyzed. The nature of “mixed” (mammoth, tundra-steppe, hyperborean) faunas and their diversity are considered in the context of questions related to trends in the dynamics of range boundaries and relative abundance of different mammal species during the Late Pleistocene and Holocene.     

The Diet of the Great Gray Owl,Strix nebulosa,at Different Levels of Prey Abundance during the Nesting Season

Variation in the diet of the Great Gray Owl, a specialist predator, at different levels of prey abundance in different biotopes was studied in the middle Transural region. Microtus voles were found to be the main prey, with shrews being alternative prey. In different plots, two types of change in the diet were observed during the nesting season: (1) substitution of Microtus voles inhabiting meadow biotopes by Microtus voles characteristic of forest habitats, and (2) substitution of the latter by shrews.

     

Time Scales of the Dynamics of Rodent Communities and their Alignment with the Levels of Spatial Differences between Faunas

Russian Journal of Ecology - This work involved materials from the recent and ancient (Holocene and Late Pleistocene) localities of the ornithogenic assemblages of Ural rodent bone remains. The...