From the first appearance of the term in law in the Clean Water Act of 1972 (US), ecological integrity has been debated by a wide range of researchers, including biologists, ecologists, philosophers, legal scholars, doctors and epidemiologists, whose joint interest was the study and understanding of ecological/biological integrity from various standpoints and disciplines. This volume discusses the need for ecological integrity as a major guiding principle in a variety of policy areas, to counter the present ecological and economic crises with their multiple effects on human rights.