This book incorporates previous studies about community organization as well as properties of an ecotone, which are compiled in way to give an insight of the structure, dynamics, functioning and types of communities in the biosphere. The study also includes concepts of ecotone and edge effect which are also described in details. The present study aims to reach the readers wider than others, such as undergraduate, postgraduate, researchers, environmental workers This book is illustrated in a way that it may be helpful in form of reference book to academicians as well as researchers as ecological studies are concerned.