Publisher Description

"Wetlands" has become a hot word in the current environmental debate. But what does it signify? In 1991, proposed changes in the legal definities of wetlands stirred controversy and focused attention on the scientific and economic aspects of their management. This volume explores how to define wetlands. The committee--whose members were drawn from academia, government, business, and the environmental community--builds a rational, scientific basis for delineating wetlands in the landscape and offers recommendations for further action. Wetlands also discusses the diverse hydrological and ecological functions of wetlands, and makes recommendations concerning so-called controversial areas such as permafrost wetlands, riparian ecosystems, irregularly flooded sites, and agricultural wetlands. It presents criteria for identifying wetlands and explores the problems of applying those criteria when there are seasonal changes in water levels. This comprehensive and practical volume will be of interest to environmental scientists and advocates, hydrologists, policymakers, regulators, faculty, researchers, and students of environmental studies.

This book brings together in compact form a broad scientific and sociopolitical view of US wetlands. This primer lays out the science and policy considerations to help in navigating this branch of science that is so central to conservation policy, ecosystem science and wetland regulation. It gives explanations of the attributes, functions and values of our wetlands and shows how and why public attitudes toward wetlands have changed, and the political, legal, and social conflicts that have developed from legislation intended to stem the rapid losses of wetlands. The book describes the role of wetland science in facilitating the evolution of a rational and defensible system for regulating wetlands and will shed light on many of the problems and possibilities facing those who quest to protect and conserve our wetlands.

This book addresses the evaluation of environmental impacts and services identified in headwaters of different eco-zones around the world. It presents 24 papers selected from contributions to recent meetings of the European Forestry Commission Working Party on the Management of Mountain Watersheds, which is coordinated by the FAO (Food and Agriculture Organization of the United Nations). Through its biennial sessions and inter-session activities, the Working Party focuses on the continuous exchange of knowledge and experience between professionals in Europe and other regions of the world confronted with similar issues. The contributions have been updated and peer-reviewed, and the interdisciplinary team of authors includes experts from the fields of geography, hydrology, chemistry, biology, forestry, ecology and socio-economics. The participatory management of headwater catchments in Europe, Africa, America and Asia was the central theme of the articles, which were divided into four sessions: (1) Headwater Environment and Natural Resources, (2) Enhancing Environmental Services in Headwaters, (3) Environmental Services in the Changing World, and (4) New Challenges for Environmental Education and Active Citizenship. The practical applications shown in the book address the multi-resource concept. The book offers a unique and valuable resource for environmentalists, engineers, watershed planners and policymakers alike.