abundance

Number of Small Mammals in Fields, Stacks and Ricks in the South of the Central Black-Earth Region

Authors: Trankvilevsky D. V., Kvasov D. A.

The results of studies conducted by the sanitary and epidemiological service in the Voronezh region from 1959 till 2013 were analyzed. Records of small mammals (SM) were carried out by snap traps with wire hooks for baiting. Standard bait (black bread pieces flavored with sunflower oil) was used. Traps were placed in lines. The numbers of SM were calculated as a percentage of animals fallen into 100 traps per day. The data obtained were analyzed using conventional statistical methods, including the method of standard deviations.

ENVIRONMENTAL ORGANIZATION OF THE SPATIAL-TYPOLOGICAL DIVERSITY OF COMMUNITIES OF AMPHIBIANS, REPTILES AND SMALL MAMMALS IN THE WEST SIBERIAN PLAIN

Authors: Ravkin Y. S., Bogomolova I. N.

The differences in estimates of the relation of the population diversity of amphibians, reptiles and small mammals with environmental factors were analyzed by the species’ abundance and contributions to the Shannon index on the basis of their energy indices, as well as the difference in general representations of the spatial-typological variability of the communities of these animal groups with the West Siberian Plain as an example.

ABUNDANCE OF TETRAX TETRAX L. 1758 (OTIDIDAE, AVES) IN THE SARATOV REGION

Authors: Oparin M. L., Kondratenkov I. A., Oparina O. S., Mamayev A. B.

Based on the count data obtained by various methods and their statistical processing, the abundance of the autumn population of Tetrax tetrax in the Saratov Trans-Volga region was estimated from the late 1990s till now. From 2012 to 2016 it averaged about 30,000 individuals, and in the Right Volga Bank region it was one or two orders lower, the species’ distribution there was sporadic. When studying the T. tetrax abundance dynamics, an increase in its population on the studied territory in the first half of the 2000s was established.

Arthropod abundance on bustard nesting sites in the Saratov Trans-Volga region

Authors: Oparina O. S., Oparin M. L.

The results of our study of the quantitative and qualitative arthropod composition at potential nesting areas of Otis tarda in the Saratov Trans-Volga region are presented. Specific information obtained at 7 areas (2 fallow fields, two fields of winter and spring wheat, two natural fallow lands of different ages, and virgin land) in 2012 is given. A comparative analysis of some indicators of the arthropod abundance and biomass on winter fields treated with chemicals and untreated is conducted. The obtained results are compared with those of previous years.