Filled with practical guidance on how to conduct selenium risk assessments in the aquatic environment, this book offers the latest information on assessment techniques, gives the current state of contamination in industrialized countries, and raises awareness for developing nations. Written by leading experts, it describes best practices for designing experiments to collect information on aquatic effects and trophic transfer of selenium for risk assessments, presents numerous case studies both US and international, and gives insight as to how current and future ecosystems may or may not be affected.