Alaska Wetlands Manual for National Wetland Inventory
Author | : U.S. Fish and Wildlife Service |
Publisher | : |
Total Pages | : |
Release | : 1982* |
Genre | : Hydric soils |
ISBN | : |
Download Alaska Wetlands Manual For National Wetland Inventory full books in PDF, epub, and Kindle. Read online free Alaska Wetlands Manual For National Wetland Inventory ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author | : U.S. Fish and Wildlife Service |
Publisher | : |
Total Pages | : |
Release | : 1982* |
Genre | : Hydric soils |
ISBN | : |
Author | : |
Publisher | : Government Institutes |
Total Pages | : 130 |
Release | : 1989 |
Genre | : Nature |
ISBN | : |
Author | : U.S. Fish and Wildlife Service |
Publisher | : |
Total Pages | : 110 |
Release | : 1979 |
Genre | : Aquatic ecology |
ISBN | : |
Author | : United States. Federal Interagency Committee for Wetland Delineation |
Publisher | : |
Total Pages | : 132 |
Release | : 1989 |
Genre | : Land use |
ISBN | : |
Author | : Jonathan V. Hall |
Publisher | : |
Total Pages | : 36 |
Release | : 1994 |
Genre | : Wetland conservation |
ISBN | : |
Author | : U. S. Fish U.S. Fish and Wildlife Service |
Publisher | : CreateSpace |
Total Pages | : 30 |
Release | : 2015-02-14 |
Genre | : |
ISBN | : 9781507771761 |
The U.S. Fish and Wildlife Service has been conducting the National Wetlands Inventory for over 25 years. The NWI Program has produced wetland maps for 91% (78% final) of the lower 48 states, all of Hawaii, and 35% of Alaska. Wetlands are classified according to the Service's official wetland classification system (Cowardin et al. 1979). This classification describes wetlands by ecological system (Marine, Estuarine, Lacustrine, Riverine, and Palustrine), by subsystem (e.g., water depth, exposure to tides), class (vegetative life form or substrate type), subclass, water regimes (hydrology), water chemistry (pH and salinity), and special modifiers (e.g., alterations by humans). The maps have been converted to digital data for 47% of the lower 48 states and 18% of Alaska. The availability of digital data and geographic information system (GIS) technology make it possible to use NWI data for various geospatial analyses.
Author | : John G. Lyon |
Publisher | : CRC Press |
Total Pages | : 204 |
Release | : 2011-03-21 |
Genre | : Science |
ISBN | : 1439838925 |
Wetland identification, although theoretically straightforward, is not cut and dry as a practice. Despite the time and expense, it is an economic and environmental necessity. The Definitive Guide to the Practice of Wetland IdentificationThe second edition of the bestselling Practical Handbook for Wetland Identification and Delineation offers soluti
Author | : Joel Wagner |
Publisher | : |
Total Pages | : 136 |
Release | : 1989 |
Genre | : Wetland conservation |
ISBN | : |
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 328 |
Release | : 1995-09-06 |
Genre | : Science |
ISBN | : 0309176794 |
"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 committeeâ€"whose members were drawn from academia, government, business, and the environmental communityâ€"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.
Author | : Robert T. Huffman |
Publisher | : |
Total Pages | : 0 |
Release | : 1984 |
Genre | : Wetlands |
ISBN | : |
This guide to the major wetland plant associations and communities found in Alaska is one of a series of eight such guides, each prepared by a specialist or specialists familiar with the wetlands in the region covered by the guide. The guides are intended for distribution to the various U.S. Army Engineer Districts for use in the onsite technical identification and delineation of wetland boundaries. The classification system in this guide is adapted from that utilized by the National Wetlands Inventory (NWI) Project of the U.S. Fish and Wildlife Service, but frequently departs from NWI's system to describe common and/or distinct wetland communities or associations.