Various concepts of ecological sustainability and integrity have been proposed as a means of enhancing the protection of humans and the environment against the threat of human activities. In this book, scholars in the fields of ecology, public policy, philosophy, and economics are brought together in order to explore more fully the concepts of sustainability and ecological integrity as well as the connections between them. First, the concept of sustainability in relation to science, law, and ethics is explored. Second, concepts of sustainability and ecological integrity are applied to problems in specific natural resources. Finally, authors examine possible approaches to public policy which might include concepts of sustainability and ecological integrity. The book should be of interest to environmental professionals, whether academic, governmental or industrial, or in the private consulting sector, and should be suitable as an upper level undergraduate or graduate text or reference.