In spite of the growing importance of species sensitivity distribution models (SSDs) in ecological risk assessments, the conceptual basis, strengths and weaknesses of using them have not been comprehensively reviewed. Written by a panel of international experts, 'Species Sensitivity Distributions in Ecotoxicology' reviews SSD methods from all angles, compiling the variety of contemporary applications of SSD-based methods. Beginning with an introduction to SSDs, the chapter authors review the issues surrounding SSDs, synthesizing the positions of advocates and critics with their own analysis of each issue. Finally, they discuss the prospects for future development, paving the way for improved future uses. In sum, this book defines the field of SSD modelling and application.