Bioindicator Estimation of Quality of Environment in Floodlands of the Rivers Oka and Ugra on Stability of Development of Lake Frogs (Rana ridibunda)

O. A. Ustyuzhanina, A. B. Streltsov


A comparative analysis was made on the base of estimation of stability of development of lake frogs (R. ridibunda) to estimate the environmental quality. Stability of development was determined according to the level of fluctuating asymmetries. Methods giving opportunity to calculate the coefficient of asymmetry on the example of Kaluga region are described.

The greatest value of the coefficient in the spots subjected to anthropogenous influence of populated areas is marked.


bioindication; stability of development; fluctuating asymmetry; urbanised territory; Rana ridibunda

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