Aquatic systems have a rich biodiversity. This book on aquatic ecology studies the interactions between species and their surroundings through lucid discussions. This book, with its detailed analyses and data, will prove immensely beneficial to professionals and students involved in the pursuit of marine biology and associated sciences at various levels. Coherent flow of topics and extensive use of examples make this book an invaluable source of knowledge. Some of the topics covered in this text are phylogenetic diversity, identification of microorganisms, genetic characterization, etc.