численность

Specific composition, numbers and biotopical distribution of snakes (Serpentes) on the southern slope of the Navagir mountain ridge (Abrau Peninsula) and some problems of its preservation

Seven species of snakes were revealed in 1997–1998, six of which (Natrix tessellata, N. natrix, Zamenis longissimus, Hierophis caspius, Platyceps najadum, and Elaphe sauromatus) were in the lower part of the slope, in the area of mediterranean vegetation. In 2001–2003, the first three species were revealed only, and their numbers significantly decreased, reaching a maximum in the middle part of the slope, in the zone of transition from mediterranean vegetation to broad-leaved forests.

Current Distribution and Some Features of the Biology of the Common Lizard – Zootoca vivipara (Lichtenstein, 1823) (Lacertidae, Reptilia) in the Saratov Region

Authors: Tabachishin V. G., Yermokhin M. V.

On the territory of the Saratov region, the populations of viviparous lizards mainly inhabit the river valleys of the Don basin. Most populations were found along the sides of lake basins. In the conditions of the drying up of floodplain lakes, some populations have degraded while the others have moved to river-bed biotopes. The reduction in the number of local populations has led to their increased disconnection.

Condition of Populations and the Conservation Status of the Vipera renardi (Christoph, 1861) (Reptilia, Serpentes) in the Saratov Region

Authors: Tabachishin V. G., Yermokhin M. V.

The historical and modern distributions of the steppe viper (Vipera renardi) in the territory of the Saratov region are analyzed. The condition of its local populations in various parts of the area is shown. The ne-cessity of monitoring and determining its conservation status in the publication of the Red DATA Book of the Saratov Region are established.

On the Reduction of the Area and Abundance of the Greek Tortoise Testudo graeca Linnaeus, 1758 (Testudinidae, Reptilia) on the Primorsky Lowland of Dagestan and Problems of its Conservation

Authors: Mazanaeva L. F., Gichihanova U. A.

Data on the status of the populations of Testudo graeca Linnaeus, 1758 on the Primorsky lowland of Dagestan are given. The research was conducted in 2014 - 2018. Over the past few decades, the range of this species on the Primorsky lowland has reduced by nine or more times. Viable populations were preserved on the coastal dunes and semidesert-steppe landscapes in the vicinity of the Aji Lake (1,300 hectares) and along the fringes and outskirts of the forest in the Samur River delta (2,100 hectares).

DISTRIBUTION AND STATUS OF ADDER (VIPERA (PELIAS) BERUS) POPULATIONS IN THE VLADIMIR REGION

Authors: Solovyov V. A., Scopin A. E., Solovyov A. N.

The adder is a usual, locally-numerous species, occurring sporadically in most parts of the Vladimir Region: everywhere in the Meshchersky Lowland and Prinerlinski District, sporadically on the Kovrovsko-Kasimovskoe Plateau, Klin-Dmitrov Ridge, in the Opole. The largest adder populations are in Yuryev-Polsky District. The adder occurrence in different habitats varies from 0.01 to 1.33 individuals per 1 km route. The maximum adder occurrence is in Kovrov (1.33 ind. / km) Vyaznikovsky (0.83 ind. / km) and Kameshkovski (0.44 ind. / km) Districts.