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Limitations of current risk characterization methods in probabilistic environmental risk assessment
Verdonck, F.A.M.; Aldenberg, T.; Jaworska, J.; Vanrolleghem, P.A. (2003). Limitations of current risk characterization methods in probabilistic environmental risk assessment. Environ. Toxicol. Chem. 22(9): 2209. https://dx.doi.org/10.1897/02-435
In: Environmental Toxicology and Chemistry. Setac Press: New York. ISSN 0730-7268; e-ISSN 1552-8618, more
Peer reviewed article  

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Author keywords
    Joint probability curve, Probabilistic risk calculation

Authors  Top 
  • Verdonck, F.A.M., more
  • Aldenberg, T.
  • Jaworska, J.
  • Vanrolleghem, P.A., more

Abstract
    In probabilistic environmental risk assessment, the likelihood and the extent of adverse effects occurring in ecological systems because of exposure(s) to substances are estimated. It is based on the comparison of an exposure/environmental concentration distribution, with a species sensitivity distribution derived from toxicity data. The calculation of a probabilistic risk can be performed in many ways (e.g., area under the curve in joint probability curves). However, several (hypothetical) examples and some theoretical considerations illustrate that the current risk characterisation methods have an integrative character and they focus on the statistical comparison of two distributions without properly considering the environmental interpretation of these underlying distributions. Several scenarios with varying exposure/environmental concentration distribution and species sensitivity distribution standard deviations are discussed.

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