This book on aquatic ecology discusses topics related to the maintenance and management of freshwater and marine ecosystems. All life forms that reside in these ecosystems require maintenance and well-being of their respective ecosystems. The maintenance and conservation of aquatic ecosystems is of vital importance for the ecological balance and biodiversity of earth. This book outlines the process of aquatic ecology in detail. It consists of contributions made by international experts. 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. Researchers in the field of fisheries, marine biology and conservation management will find the topics in this book very useful. This book on aquatic ecology is appropriate for students seeking detailed information in this area as well as for experts.