This book elucidates new techniques and applications of ecosystem in a multidisciplinary approach. Ecosystem is a study of the interactions of living organisms with the natural resources like water, air and mineral soil. Ecosystems processes include energy flow, primary production, decomposition, nutrient cycling, biodiversity, ecosystem management, ecosystem ecology, etc. This book is a valuable compilation of topics, ranging from the basic to the most complex theories and principles in the field of ecosystem study. The topics included in it are of utmost significance and bound to provide incredible insights to students. The textbook aims to serve as a resource guide for students and experts alike and contribute to the growth of the discipline.