Author: Jonathan V. HallPublisher:
ISBN:
Category : Wetland conservation
Languages : en
Pages : 36
Book Description
Status of Alaska Wetlands
Author: Jonathan V. HallPublisher:
ISBN:
Category : Wetland conservation
Languages : en
Pages : 36
Book Description
Status of Alaska Wetlands
Author: Jonathan V. HallPublisher:
ISBN:
Category : Wetland conservation
Languages : en
Pages : 36
Book Description
Wetlands
Author: Committee on Characterization of WetlandsPublisher: National Academies Press
ISBN: 0309587220
Category : Science
Languages : en
Pages : 329
Book 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.
Status of the Nation's Wetlands and Laws Related Thereto
Author: United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Water ResourcesPublisher:
ISBN:
Category : Wetland conservation
Languages : en
Pages : 1770
Book Description
Alaska Wetlands Initiative
Author: Restoration of Aquatic Ecosystems
Author: National Research CouncilPublisher: National Academies Press
ISBN: 9780309045346
Category : Technology & Engineering
Languages : en
Pages : 580
Book Description
Aldo Leopold, father of the "land ethic," once said, "The time has come for science to busy itself with the earth itself. The first step is to reconstruct a sample of what we had to begin with." The concept he expressedâ€"restorationâ€"is defined in this comprehensive new volume that examines the prospects for repairing the damage society has done to the nation's aquatic resources: lakes, rivers and streams, and wetlands. Restoration of Aquatic Ecosystems outlines a national strategy for aquatic restoration, with practical recommendations, and features case studies of aquatic restoration activities around the country. The committee examines: Key concepts and techniques used in restoration. Common factors in successful restoration efforts. Threats to the health of the nation's aquatic ecosystems. Approaches to evaluation before, during, and after a restoration project. The emerging specialties of restoration and landscape ecology.
Wetland Indicators
Author: Ralph W. TinerPublisher: CRC Press
ISBN: 1439853703
Category : Technology & Engineering
Languages : en
Pages : 631
Book Description
Understand the current concept of wetland and methods for identifying, describing, classifying, and delineating wetlands in the United States with Wetland Indicators - capturing the current state of science's role in wetland recognition and mapping. Environmental scientists and others involved with wetland regulations can strengthen their knowledge about wetlands, and the use of various indicators, to support their decisions on difficult wetland determinations. Professor Tiner primarily focuses on plants, soils, and other signs of wetland hydrology in the soil, or on the surface of wetlands in his discussion of Wetland Indicators. Practicing - and aspiring - wetland delineators alike will appreciate Wetland Indicators' critical insight into the development and significance of hydrophytic vegetation, hydric soils, and other factors. Features Color images throughout illustrate wetland indicators. Incorporates analysis and coverage of the latest Army Corps of Engineers delineation manual. Provides over 60 tables, including extensive tables of U.S. wetland plant communities and examples for determining hydrophytic vegetation.
Alaska Wetlands & Hydrography
Author: Publisher:
ISBN:
Category : Ecological mapping
Languages : en
Pages : 46
Book Description
"This report presents information and conclusions on the Alaska Wetlands GATF Pilot Project. This report was a collaborative effort of several agencies and was made possible by the Intelligence Community's Environmental Program, Government Applications Task Force (EP/GATF) and the Civil Applications Committee (CAC). The report focuses on procedures used by the Fish and Wildlife Service (FWS) and the Bureau of Land Management (BLM) to employ Intelligence Community (IC) National Systems imagery for inventorying wetlands, documenting wetland trends (losses and gains), and identifying boundaries of hydrographic features.
Status Report on Our Nation's Wetlands
Author: Current Issues in Alaska Wetland Management
Author: Charles H. RacinePublisher:
ISBN:
Category : Wetland conservation
Languages : en
Pages : 32
Book Description
Although wetlands cover over half of Alaska, the status, management and regulation of these areas is problematic. The technical literature on Alaskan wetland vegetation, soils and hydrology is abundant, but the application of the literature to wetland management is poorly developed. This report identifies problems, issues and information gaps in the management of Alaskan wetlands. There are numerous arguments and debates on the designation, function and values, and disturbance of certain wetlands in Alaska. Permafrost, fire cycles and unique hydrologic regimes complicate the designation and delineation of Alaskan wetlands. The functions and values of most Alaskan wetlands clearly lie in their importance as habitat, particularly for migrating waterbirds, but an understanding of their role in flood water storage, water quality improvement, subsistence and other functions remains controversial and in need of study. Disturbance and other impacts on Alaskan wetlands is small relative to the large area that wetlands cover and in comparison with the loss of wetlands in the lower 48 states. However, several development projects in Alaska have affected large wetland areas and methods to restore these wetlands are being developed. Cumulative impacts are unknown, as are techniques for restoring permafrost wetlands containing gravel fill.