John Wiley & Sons, Ltd.

Development and application of the SSD approach in scientific case studies for Ecological Risk Assessment

0
Species Sensitivity Distributions (SSDs) are used in Ecological Risk Assessment (ERA) for extrapolation of the results of toxicity tests with single‐species to a toxicity threshold considered protective of ecosystem structure and functioning. The attention to and importance of the SSD approach has increased in scientific and regulatory communities since the 1990s. It triggered discussions and critics on the concept of the approach as well as its technical aspects (e.g., distribution type, number of toxicity endpoints). However, various questions remain unanswered, especially with regard to, e.g., different endpoints, statistical methods and protectiveness of threshold levels. In the present literature review (covering the period 2002‐2013), we therefore explore case studies, where the SSD approach was applied and investigate how endpoint types, species choice and data availability affect SSDs. We also investigate which statistical methods may be used to construct reliable SSDs and whether or not HC5s from a generic SSD can be protective for a specific local community. It was shown that estimated protective concentrations were determined by taxonomic groups rather than the statistical method used to construct the distribution. Based on comparisons between semi‐field and lab‐based SSDs, the output from lab‐SSD was protective of semi‐field communities in majority of studies. This article is protected by copyright. All rights reserved

Customer comments

No comments were found for Development and application of the SSD approach in scientific case studies for Ecological Risk Assessment. Be the first to comment!