Grass snake populations’ features of the forest biogeocoenoses in the Samara river area

Abstract

Results of 7-years research of the grass snake population in forest ecosystems of the Samara River area (Dnipropetrovsk province, Ukraine) are presented. The population is of high abundance but have a tendency to decrease. Population’s sex ratio, spatial structure, snakes’ morphometric parameters and pholidosis are described. Those characteristics reflect the population specificity, which was formed by microevolutional processes.