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Author: U.S. Fish & Wildlife Service Publisher: CreateSpace ISBN: 9781489585615 Category : Languages : en Pages : 78
Book Description
This report summarizes current National Wetlands Inventory (NW)I data for each state from Maine through Virginia and the District of Columbia.
Author: U.S. Fish & Wildlife Service Publisher: CreateSpace ISBN: 9781489585615 Category : Languages : en Pages : 78
Book Description
This report summarizes current National Wetlands Inventory (NW)I data for each state from Maine through Virginia and the District of Columbia.
Author: U. S. Fish U.S. Fish and Wildlife Service Publisher: CreateSpace ISBN: 9781507728413 Category : Languages : en Pages : 78
Book Description
The U.S. Fish and Wildlife Service established the National Wetlands Inventory (NWI) in the mid-1970s to map the nation's wetlands and deepwater habitats. Since then, the NWI has completed at least one phase of mapping for all northeastern states, except New York where roughly three-quarters of the state has been inventoried. For most areas, NWI maps have been converted to digital geospatial data which facilitates generation of acreage summaries of the NWI findings. State reports have been published for several states (Rhode Island, Connecticut, New Jersey, Delaware, and Maryland) and acreage summaries published for most other northeastern states. Since these reports were published, NWI data have been updated for many areas. This report summarizes current NWI data (as of September 2090) for each state from Maine through Virginia and the District of Columbia.
Author: Ralph W. Tiner Publisher: CRC Press ISBN: 1315357070 Category : Technology & Engineering Languages : en Pages : 588
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.
Author: U. S. Fish and Wildlife Service Publisher: CreateSpace ISBN: 9781484156629 Category : Languages : en Pages : 30
Book Description
In the mid-1990s, a set of hgm-type descriptors were developed to describe a wetland's landscape position, landform, and water flow path (Tiner 1995, 1996a, b). Use of the initial set of keys for pilot watershed projects lead to a refinement and expansion of the keys in subsequent years (Tiner 1997a, 2000, 2002, 2003). These projects were watershed characterizations that included a preliminary assessment of wetland functions as a main component or the prime component of the study. The reports addressed the following watersheds: Casco Bay (Maine; Tiner et al. 1999), Nanticoke River (Maryland and Delaware; Tiner et al. 2000, 2001), Coastal Bays (Maryland; Tiner et al. 2000), and Cannonsville and Neversink Reservoirs (New York; Tiner et al. 2002), as well as the Pennsylvania Coastal Zone (Tiner and DeAlessio 2002)
Author: U. S. Fish U.S. Fish and Wildlife Service Publisher: CreateSpace ISBN: 9781507805046 Category : Languages : en Pages : 28
Book Description
The U.S. Fish and Wildlife Service (FWS) has been conducting a nationwide survey of wetlands and deepwater habitats since the mid-1970s through its National Wetlands Inventory Program (NWI). This survey is accomplished using traditional photointerpretation techniques to produces map and digital geospatial data on the status of wetlands. The U.S. Geological Survey topographic maps serve as the base data upon which boundaries of wetlands and deepwater habitats are delineated.
Author: U. S. Fish U.S. Fish and Wildlife Service Publisher: CreateSpace ISBN: 9781507771761 Category : Languages : en Pages : 30
Book Description
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: U.S. Fish & Wildlife Service
Author: U.S. Fish & Wildlife Service
Author: Ralph W. Tiner
Author: U. S. Fish U.S. Fish and Wildlife Service
Author: Ralph W. Tiner
Author: Charles Edward Alexander
Author: Ralph W. Tiner
Author: U. S. Fish and Wildlife Service
Author: Glenn S. Smith
Author: U. S. Fish U.S. Fish and Wildlife Service
Author: U. S. Fish U.S. Fish and Wildlife Service