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Alaska Wetlands Hydrography
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Download or read book Alaska Wetlands & Hydrography written by and published by . This book was released on 1997 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.
Book Synopsis Alaska Wetlands & Hydrography, December 1996 by :
Download or read book Alaska Wetlands & Hydrography, December 1996 written by and published by . This book was released on 1996 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alaska Wetlands & Hydrography written by and published by . This book was released on 1996 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Alaska Wetlands & Hydrography by : Jonathan V. Hall
Download or read book Alaska Wetlands & Hydrography written by Jonathan V. Hall and published by . This book was released on 1996 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.
Book Synopsis Status of Alaska Wetlands by : Jonathan V. Hall
Download or read book Status of Alaska Wetlands written by Jonathan V. Hall and published by . This book was released on 1994 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Current Issues in Alaska Wetland Management by : Charles H. Racine
Download or read book Current Issues in Alaska Wetland Management written by Charles H. Racine and published by . This book was released on 1994 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Hydrography by : U.S. Coast and Geodetic Survey
Download or read book Hydrography written by U.S. Coast and Geodetic Survey and published by . This book was released on 1916 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Hydrology and Jurisdictional Status of a Wetland Complex on the Alaskan Arctic Coastal Plain by : Ronald J. Rovansek
Download or read book The Hydrology and Jurisdictional Status of a Wetland Complex on the Alaskan Arctic Coastal Plain written by Ronald J. Rovansek and published by . This book was released on 1994 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :U. S. Fish U.S. Fish and Wildlife Service Publisher :CreateSpace ISBN 13 :9781507771761 Total Pages :30 pages Book Rating :4.7/5 (717 download)
Book Synopsis Correlating Enhanced National Wetlands Inventory Data with Wetland Functions for Watershed Assessments by : U. S. Fish U.S. Fish and Wildlife Service
Download or read book Correlating Enhanced National Wetlands Inventory Data with Wetland Functions for Watershed Assessments written by U. S. Fish U.S. Fish and Wildlife Service and published by CreateSpace. This book was released on 2015-02-14 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Wetland Soils and Vegetation, Arctic Foothills, Alaska by : Marilyn Walker
Download or read book Wetland Soils and Vegetation, Arctic Foothills, Alaska written by Marilyn Walker and published by . This book was released on 1989 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book America's Wetlands written by and published by . This book was released on 1988 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wetland Indicators by : Ralph W. Tiner
Download or read book Wetland Indicators written by Ralph W. Tiner and published by CRC Press. This book was released on 1999-04-21 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 Shows 55 color plates, documenting wetland indicators throughout the nation - with more than 34 soil plates and aerial photos Illustrates other wetland properties with more than 50 figures Provides over 60 tables, including extensive tables of U.S. wetland plant communities and examples for determining hydrophytic vegetation Contents Wetland Definitions Wetland Concepts for Identification and Delineation Plant Indicators of Wetlands and Their Characteristics Vegetation Sampling and Analysis for Wetlands Soil Indicators of Wetlands Wetland Identification and Boundary Delineation Methods Problem Wetlands and Field Situations for Delineation Wetland Classification Wetlands of the United States: An Introduction, With Emphasis on Their Plant Communities Wetland Mapping and Photointerpretation
Book Synopsis Phytosociology and Succession on Earthquake-Uplifted Coastal Wetlands, Copper River Delta, Alaska by : John F. Thilenius
Download or read book Phytosociology and Succession on Earthquake-Uplifted Coastal Wetlands, Copper River Delta, Alaska written by John F. Thilenius and published by DIANE Publishing. This book was released on 2008-06 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Copper River Delta (CRD) stretches 75 km. along the south-central coastline of Alaska. It is the terminus of the outwash deposits from a large part of the most heavily glaciated region of N. Amer., & all major rivers that flow into the delta carry high levels of suspended sediments. In 1964, a severe earthquake raised the entire delta from 1.8 to 3.4 meters above the previous mean sea level. Subtidal areas became intertidal, & intertidal areas supertidal. Vegetation on newly supertidal levees changed from herb to shrub. A change in frequency & duration of tidal inundation & water salinity is the most obvious cause. The uplift appears to have altered locations & rates, but not the nature, of wetland plant succession on the CRD. Illustrations.
Book Synopsis Wetlands by : National Research Council
Download or read book Wetlands written by National Research Council and published by National Academies Press. This book was released on 1995-09-06 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.
Book Synopsis Hydrology of Thermokarst Ponds Near Council, Alaska by : Matthew Robert Fraver
Download or read book Hydrology of Thermokarst Ponds Near Council, Alaska written by Matthew Robert Fraver and published by . This book was released on 2003 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Water balances were conducted on a wetland complex near Council, Alaska on the Seward Peninsula during the 2001 and 2002 summers in order to investigate the possibility of subsurface drainage through open taliks. Ponds formed by ground subsidence resulting from the melting of ice-rich permafrost (thermokarst) are common in the valley east of Council. The majority of these ponds are displaying a decreased surface area when compared with aerial photographs and satellite imagery from the 1950's and 1980's. Because the long-term temperature and precipitation data from Nome do not reveal any conclusive climate trends that might result in the drying of the ponds, the cause of this change is suspected to be linked to the local permafrost and thermokarst conditions. From geophysical surveys, the permafrost in the area is typically 20 to 60 meters thick, and underneath the shrinking thermokarst ponds are large thawed regions (taliks), most of which extend through the local permafrost (open taliks). Downward hydraulic gradients have been identified in nested wells drilled into the open taliks, indicating the downward migration of water from the ponds to the subpermafrost groundwater. It was hypothesized that this water loss mechanism has a considerable impact on the hydrologic dynamics of the ponds and is related to recent drying. The results of this two-year study demonstrate that evapotranspiration and lateral drainage are capable of accounting for essentially all of the observed storage changes during rainy periods. During dry periods, the combined water lost via subsurface drainage through an open talik and lateral drainage into nearby wetlands is less than the water lost through evapotranspiration. The magnitude of the subsurface drainage component of the water balance is confounded by the inability to quantify the subtle but influential lateral fluxes into nearby wetlands"--Leaf iii.
Book Synopsis Bringing Alaska's Freshwater Hydrography Into the 21st Century by : Kacy E. Krieger
Download or read book Bringing Alaska's Freshwater Hydrography Into the 21st Century written by Kacy E. Krieger and published by . This book was released on 2016 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the work being conducted on freshwater hydrography in Alaska. The state lacks quality mapping of its surface water features. The Alaska Hydrography Technical Working Group and Alaska Hydrography Database have worked to establish the Alaska Hydrography Strategic Plan to guide a mission to serve current and future hydrography needs of Alaska for the next five years.
Book Synopsis Local Planning for Wetlands Management by : Amy Kyle
Download or read book Local Planning for Wetlands Management written by Amy Kyle and published by . This book was released on 1982 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
