This book is a unique collection of evolutionary and ecological perspectives in the study of biodiversity. The book traces past landmarks, current questions, and future trends in biodiversity research ranging from the evaluation of the fossil record and molecular phylogenies in looking at the genesis of diversity to population, community, and ecosystem-level approaches in understanding patterns of species persistence. Subject reviews, case studies, and discussions of techniques are combined to produce a state-of-the-art volume that will be welcomed by students and researchers in fields related to biodiversity, as well as staffs of zoos and botanical gardens.