While current methods used in ecological risk assessments for pesticides are largely deterministic, probabilistic methods that aim to quantify variability and uncertainty in exposure and effects are attracting growing interest from industries and governments. Probabilistic methods offer more realistic and meaningful estimates of risk and hence, pot
Introduction, Objectives and Key issues. Problem Formulation for Probabilistic Assessments. Bayesian Methods. Selecting Statistical Distributions. Propagating Uncertainty in Non-Hierarchical Models. Propagating Uncertainty in Hierarchical Models. Bounding Techniques. How to Detect and Avoid Misleading Results. Interpreting and Using PRA Results in Environmental Decision-Making. Workshop Conclusions and Findings. Glossary.