Ecosystem is the community of living organisms and their interaction with their surroundings. They are of various kinds like marine ecosystem, freshwater ecosystem and terrestrial ecosystem. This book presents researches and studies performed by experts across the globe in the field of ecosystem science. While understanding the long-term perspectives of the topics, the book makes an effort in highlighting their impact as a modern tool for the growth of the discipline. It aims to serve as a resource guide for students and experts alike.