title: Radiation dose assessment for the biota of terrestrial ecosystems in the shoreline zone of the Chernobyl nuclear power plant cooling pond.
abstract: Radiation exposure of the biota in the shoreline area of the Chernobyl Nuclear Power Plant Cooling Pond was assessed to evaluate radiological consequences from the decommissioning of the Cooling Pond. This paper addresses studies of radioactive contamination of the terrestrial faunal complex and radionuclide concentration ratios in bodies of small birds, small mammals, amphibians, and reptiles living in the area. The data were used to calculate doses to biota using the ERICA Tool software. Doses from 90Sr and 137Cs were calculated using the default parameters of the ERICA Tool and were shown to be consistent with biota doses calculated from the field data. However, the ERICA dose calculations for plutonium isotopes were much higher (2-5 times for small mammals and 10-14 times for birds) than the doses calculated using the experimental data. Currently, the total doses for the terrestrial biota do not exceed maximum recommended levels. However, if the Cooling Pond is allowed to draw down naturally and the contaminants of the bottom sediments are exposed and enter the biological cycle, the calculated doses to biota may exceed the maximum recommended values. The study is important in establishing the current exposure conditions such that a baseline exists from which changes can be documented following the lowering of the reservoir water. Additionally, the study provided useful radioecological data on biota concentration ratios for some species that are poorly represented in the literature.
authors: Chernobyl Center for Nuclear Safety, Radioactive Waste and Radioecology, International Radioecology Laboratory, Slavutych, Ukraine.
authors: Boris Ya
authors: BY
authors: Oskolkov
authors: Mikhail D
authors: MD
authors: Bondarkov
authors: Sergey P
authors: SP
authors: Gaschak
authors: Andrey M
authors: AM
authors: Maksimenko
authors: Thomas G
authors: TG
authors: Hinton
authors: Daniel
authors: D
authors: Coughlin
authors: G Timothy
authors: GT
authors: Jannik
authors: Eduardo B
authors: EB
authors: Farfán
mesh_terms: D000818:Animals; D058448:Biota; D001717:Birds; D001822:Body Burden; D002588:Cesium Radioisotopes / Q000032:analysis / Q000378:metabolism; D047852:Chernobyl Nuclear Accident; D003080:Cold Temperature; D005618:Fresh Water; D008322:Mammals; D055848:Nuclear Power Plants; D011829:Radiation Dosage; D018570:Risk Assessment / Q000379:methods; D013045:Species Specificity; D013326:Strontium Radioisotopes / Q000032:analysis / Q000378:metabolism; D014455:Ukraine; D014875:Water Pollutants, Radioactive / Q000032:analysis* / Q000737:chemistry / Q000378:metabolism
chemical_list: D002588:Cesium Radioisotopes; D013326:Strontium Radioisotopes; D014875:Water Pollutants, Radioactive