This handbook and accompanying method sheets aim to assist developing countries build their capability in ecotoxicological monitoring. This useful binder brings together the knowledge of pesticide impact and monitoring specialists to provide guidance on the measurement, analysis and interpretation of change in animal populations and key soil functions. This handbook will be of primary interest to those in government, development agencies, donors and non-government organizations who carry responsibility for the environment, agriculture and public health. Academics and students of ecotoxicology in developing countries should find both the specialist chapters and the field methodology useful.