population dynamics

Waders of Agricultural Areas of the Ivanovo Region in the Crisis of Agricultural Production

Authors: Chasov D. V., Melnikov V. N., Chudnenko D. E.

The agricultural landscape of the Ivanovo region is now a sophisticated mosaic of variety of types of lands in use and abandoned lands at different stages of succession. This is mainly determined the fauna, structure and population dynamics of such open-field birds as waders. The paper reflects the correlation of the fauna and population of the waders of agricultural lands in the Ivanovo region with such key factors in farming ecosystems as the stages of succession, haymaking, pasturage, and agricultural burning of vegetation.

Wild Ungulates of Russia: Trends of Their Population Dynamics

Authors: Danilkin A. A.

According to a forecast of the specialists from “Centrokhotkontrol”, due to the natural climatic cyclicity, a recurrent reduction in the population of ungulates, the moose in particular, should occur in Russia from 2007 - 2010, which “will lead to a recurrent significant age minimum number” in the 2020s (in 2014 - 2015 in Central Russia). In reality, the abundance of the majority of species, including the moose, the European and Siberian roe deer, the red deer, the sika deer and the reindeer, has been steadily growing despite this “trophiclimatic” forecast.

DYNAMICS OF THE ABUNDANCE AND COMMUNITY STRUCTURE OF SMALL MAMMALS IN THE SARATOV TRANS-VOLGA REGION

Authors: Tsvetkova A. A., Oparin M. L.

The population of small mammals in different areas of the Saratov Trans-Volga region features long-term and constantly increasing numbers of Sylvaemus uralensis, and its wide distribution in a variety of habitats. The maximum density of S. uralensis is 72.0 ind. per 100 trap-days and the fraction in catches is 73.0%. A tendency is observed to an increasing numbers of Microtus arvalis.