Bringing together more than thirty influential regulators, academics, and industry scientists, this volume provides a coherent, science-based view on ecological modeling for regulatory risk assessments. It discusses the benefits of modeling in the context of registrations, identifies the obstacles that prevent ecological modeling being used routinely in regulatory submissions, and explores the actions needed to overcome these obstacles. The book provides examples of ecological models applied to real-world decision making and presents various up-to-date approaches for assessing the ecological risks of plant protection products.