'Appropriately assuming that environmental policy is both a matter of science and ethics, this book compellingly argues that ecosystem integrity should be the goal of environmental policy.' Donald A. Brown, Director Bureau of Hazardous Sites and Superfund Enforcement, Pennsylvania Dept. of Environmental Resources, Harrisburg 'Westra and Lemons have done an admirable job fleshing out the debate on the role of ecological integrity in environmental decisionmaking.' Margaret Mellon, Director Biotechnology and Agricultural Program, Union of Concerned Scientists, Washington, D.C.