динамика численности

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.

Long-term Dynamics of the Community Structure of Larks (Alaudidae, Aves) in the North-Western Caspian Lowland

Authors: Oparin M. L., Mamaev A. B., Oparina O. S., Trofimova L. S.

We studied the population structure and the number of larks in the steppe and semi-desert zones of the Caspian Lowland (within the territories of Alexandrov-Gay district of the Saratov region, Russian Federation, Dzhanybek and Bokey-Ordyn districts of the Western-Kazakhstan region, Republic of Kazakhstan) in six key areas in 2011 - 2018.

DYNAMICS OF THE ABUNDANCE AND DEMOGRAPHIC STRUCTURE OF POPULATIONS OF THE SMALL WOOD MOUSE (APODEMUS URALENSIS PALLAS, 1811) (RODENTIA, MURIDAE) AT URBANIZED SITES OF THE SOUTHERN TAIGA SUBZONE

Authors: Chernousova N. F.

The dynamics of abundance and demographic structure of the small wood mouse (Apodemus uralensis Pallas, 1811) at urbanized areas of a pine forest located within the urban limits and exposed to anthropogenic impact of various degree and character was under study during 9 years. No clear relation between the abundance dynamics and the sex ratio dynamics (age ignored) in the populations of A.

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.