Soil isotherms (°C) in the coldest months and range of the Pallas’ spadefoot (shaded). Soil isotherms (°C) at different depths in the coldest months: European Russia, southern West Siberia and west Kazakhstan. Geographic range of the Pallas’ spadefoot (shaded), numbers in the left lower corners represent depth of the measurement made by weather stations.

 
 
  Part of: Bulakhova N, Alfimov A, Berman D (2020) The eastern boundary of the geographic range of the Pallas’ spadefoot Pelobates vespertinus (Anura, Amphibia) is limited by overwintering temperatures. Herpetozoa 33: 171-175. https://doi.org/10.3897/herpetozoa.33.e58050