The handbook of ecotoxicological terms will comprise a series of key terms produced by invited authors followed by a comprehensive glossary that will regroup words or expressions, the meaning of which is deemed of importance to enhance the knowledge of readers. In a sense, this book is intended to be a blend between a kind of encyclopedia of designated terms relevant to the field of modern aquatic toxicology and a dictionary of complementary accessory words. This book, for example, will include term definitions such as biotic ligand model, ecological risk assessment, ecotoxicogenomics, environmental effects monitoring and sediment triad.