90Sr and 137Cs Accumulation in the March Frog (Pelophylax ridibundus Pall.) in the Middle Urals
V. P. GUSEVA1, M. Ya. CHEBOTINA1, V. G. ISHCHENKO1, D. L. BERZIN2
1Institute of Plant and Animal Ecology, UrB RAS, 620144, Ekaterinburg, 8 Marta str., 202
2B. N. Yeltzin Ural Federal University, 620002, Ekaterinburg, Mira str., 19
Keywords: озерная лягушка, промливневый канал, Белоярское водохранилище, Верхнетагильское водохранилище, река Тагил, 90Sr, 137Cs, the march frog, discharge channel, Beloyarskoye reservoir, Verkhnetagilskoye reservoir, the Tagil river
Abstract
90Sr, 134Cs and 137Cs accumulation in the march frog were studied in the regions of the Beloyarskoye (discharge channel) and Verkhnetagilskoye (the Tagil river downstream of the dam) reservoirs. 90Sr concentrations in the animals from the discharge channel varied from 2 to 25 Bq/kg, from the Tagil ri ver - from 1 to 13 Bq/kg, 137Cs concentrations were 8-26 and 11-100 Bq/kg, respectively. No distinctions in 90Sr and 137Cs accumulation depending on age and sex were found. Accumulation levels in the march frog were compared with those in other representatives of the water ecosystem of the discharge channel. It was found that the population from the discharge channel accumulated significantly more 90Sr and less 137Cs than the population from the Tagil river. Evidently, 137Cs was transferred to the Tagil river from a certain unknown source of radioactive pollution.
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