Assessing ecological effects of radionuclides: data gaps and extrapolation issues.

摘要: By inspection of the FASSET database on radiation effects non-human biota, one major difficulties in implementation ecological risk assessments for radioactive pollutants is found to be lack data chronic low-level exposure. A critical review provided a number extrapolation issues that arise undertaking an assessment: acute versus exposure regime; quality including relative biological effectiveness and weighting factors; from individual population level, radiosensitivity lifestyle variations throughout life cycle; single radionuclide multi-contaminants. The specificities environmental situations interest (mainly regimes) emphasise importance reproductive parameters governing demography within given ecosystem and, as consequence, structure functioning ecosystem. As operational conclusion keep mind any site-specific assessment, present state-of-the-art allows us grade magnitude uncertainties follows: species another > = external internal mixture stressors function.