Pelobates fuscus

Structure Transformation of the Anuran Amphibian Spawning Communities in Floodplain Lakes of the Medveditsa River Valley (Saratov Region) under Conditions of Long-Term Reduction of Water Content

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

The structure of spawning taxocenoses of anuran amphibians in five floodplain lakes of the Medveditsa river valley in 2009-2018 is analysed. Two near-terrace lakes (Lebyazhye and Koblovo) and three lakes of the central floodplain (Sadok, Kruglen’koye, and Cherepashie) were used as model ones. The degradation of the populations of the three most numerous species, a decrease in the dominance degree of the common spadefoot toad were established.

PHENOLOGICAL CHANGES OF THE WINTERING OF PELOBATES FUSCUS (PELOBATIDAE, AMPHIBIA) IN THE CLIMATE TRANSFORMATION CONDITIONS OF THE NORTHERN LOWER-VOLGA REGION

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

Regularities of the changes of calendar dates of the start, end and duration of Pelobates fuscus wintering in the Medveditsa river valley (Lysogorsky district, Saratov region) within the period from 1892 until 2014 are considered. A reduction of the wintering duration by 7 days (on the average) over the last 120 years is shown, due to a shift of the start wintering date to a later date and that of the end wintering date to an earlier date.