The dynamics of the Phrynocephalus guttatus guttatus Gmel. population number in Astrakhan semi-deserts

The article is devoted to the long-term investigation in the Phrynocephalus guttatus guttatus Gmel. population number. The author considers that the significant fluctuations in the number of this species are related to the short-living cycle of the population: almost complete replacement most likely occurs in two years.