Synopsis Since time immemorial, man has been, still is, and will always be exploiting nature without taking into consideration of environmental deterioration. The environment and ecosystem, lack of concern amongst planners and ecologists about the side effects of the development projects, gaps in information and in training personnel, absence of multi-disciplinary approach to development project, and lack of systematic information, data and feed back system. The present book is an attempt to make the man acquainted thoroughly with the knowledge of ecosystem, and the factors concerned with the deterioration of the environment with the view to plan and manage the development programmes in such a way so that exploitation of natural resources may not upset the balance of nature.