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Ecoregion Maps and GIS Resources
If you do not find a link to a state that has been completed, maps and GIS data are available on the Ecoregion FTP site and web content will be available shortly. NOTE: maps and GIS files may differ. To make sure you are using the most current ecoregion data, download shapefiles of ecoregions. Conservation GIS data from The Nature Conservancy. Ecoregional Portfolio. This dataset provides a vision for conservation success for ecological systems, natural communities and species representative of an ecoregion by showing the boundaries of areas that The Nature Conservancy has prioritized for . The map of the Ecoregions of the United States is available for download in the following formats and sizes below. Here is a x 11 inch 11 x 17 inch Data for Ecoregions of the Conterminous United States. Data for the ecoregions of the conterminous United States is available through the Forest & Rangeland Ecosystem Science Center. Contact Us.
Ecoregion download files by state
We've made some changes to EPA. To make sure you are using the most current ecoregion data, download shapefiles of ecoregions. Ecoregions denote areas of general similarity in ecosystems and in the type, ecoregion download files by state, quality, and quantity of environmental resources; they are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components.
By recognizing the spatial differences in the capacities and potentials of ecosystems, ecoregions stratify the environment by its probable response to disturbance Bryce and others, These general purpose ecoregion download files by state are critical for structuring and implementing ecosystem management strategies across federal agencies, state agencies, and nongovernment organizations that are responsible for different types of resources within the same geographical areas Omernik and others, The approach used to compile this map is based on the premise that ecological regions can be identified through the analysis of the spatial patterns and the composition of biotic and abiotic phenomena that affect or reflect differences in ecosystem quality and integrity Wiken, ; Omernik, These phenomena include geology, physiography, vegetation, climate, soils, land use, wildlife, and hydrology.
The relative importance of each characteristic varies from one ecological region to another, ecoregion download files by state, regardless of the hierarchical level. A Roman numeral hierarchical scheme has been ecoregion download files by state for different levels of ecological regions. Level I is the coarsest level, dividing North America into 15 ecological regions.
Colorado contains arid canyons, ecoregion download files by state, semiarid shrub- and grass-covered plains, alluvial valleys, lava fields and volcanic plateaus, woodland- and shrubland-covered hills, forested mountains, glaciated peaks, wetlands, and a variety of aquatic habitats. Ecological diversity is enormous.
There are 6 level III ecoregions and 35 level IV ecoregions in Colorado, and many continue into ecologically similar parts of adjacent states. The project is associated with an interagency effort to develop a common framework of ecological regions. Reaching that objective requires recognition of the differences in the conceptual approaches and mapping methodologies applied to develop the most common ecoregion-type frameworks, including those developed by the USFS Bailey and others,the USEPA Omernik, and the NRCS U.
Department of Agriculture—Soil Conservation Service, As each of these frameworks is further refined, their differences are becoming less discernible. Regional collaborative projects, such as this one in Colorado, where agreement has been reached among multiple resource management agencies, are a step toward attaining consensus and consistency in ecoregion frameworks for the entire nation. Bailey, R. Bryce, S. Gallant, A.
Griffith, G. Omernik, J. Wiken, E. Chapman Dynamac CorporationGlenn E. Griffith Dynamac CorporationJames M. Geological Survey map scale , The second edition of "Ecoregions of Montana" revises many ecoregion polygon assignments that appeared in the first edition Woods and others, The second edition also modifies a few level IV ecoregion lines along Montana's western border so that ecoregions shared by Montana and Idaho will edge match.
In addition, it updates ecoregion names so that they are consistent with the most recent ecoregion work in area Chapman and others, However, it is important to note that although many polygon assignments and a few ecoregion names have changed between the first and ecoregion download files by state editions, nearly all level IV ecoregion line positions are identical on the two editions. Ecoregions are directly applicable to the immediate needs of state agencies, ecoregion download files by state, including the development of biological criteria and water quality standards and the establishment of management goals for nonpoint-source pollution.
They are also relevant to integrated ecosystem management, an ultimate goal of most federal and state resource management agencies. The approach used to compile this map is based on the premise that ecological regions can be identified through the analysis of the spatial ecoregion download files by state and the composition of biotic and abiotic phenomena that affect or reflect differences in ecosystem quality and integrity Wiken ; Omernik The relative importance of each characteristic varies from one ecological region to another regardless of the hierarchical level.
Reaching that objective requires recognition of the differences in the conceptual approaches and mapping methodologies applied to develop the most common ecoregion-type frameworks, including those developed by the USFS Bailey and others,the USEPA Omernik, and the NRCS U, ecoregion download files by state.
Department of Agriculture-Soil Conservation Service, Regional collaborative projects such as this one in Montana, where agreement has been reached among multiple resource management agencies, is a step toward attaining consensus and consistency in ecoregion frameworks for the entire nation. Chapman, S. McGrath C, ecoregion download files by state. Woods, Alan J. Woods Dynamac CorporationJames M. Azevedo OAO Corporation. Map scale , Ecoregions are directly applicable to the immediate needs of state agencies, including the development of biological criteria and water quality standards, and the establishment of management goals for nonpoint-source pollution.
The approach used to compile this map is based on the premise that ecological regions can be identified through the analysis of the patterns of biotic and abiotic phenomena that reflect differences in ecosystem quality and integrity Wiken, ; Omernik, Level IV regions are more detailed ecoregions for state-level applications; and level V are the most detailed ecoregions for landscape-level or local level projects. However, depending on the objectives of a particular project, ecoregions may be aggregated within levels of the hierarchy for data analysis and interpretation.
This project is associated with an interagency effort to develop a common frame-work of ecological regions. Reaching that objective requires recognition of the differences in the conceptual approaches and mapping methodologies that have been used to develop the most commonly used existing ecoregion-type frameworks, including those developed by the USFS Bailey and others,the USEPA Omernik, and the NRCS United States Department of Agriculture - Soil Conservation Service, As each of these frameworks is further developed, the differences between them lessen.
Regional collaborative projects such as this one in North Dakota and South Dakota, where agreement can be reached among multiple resource management agencies, is a step in the direction of attaining commonality and consistency in ecoregion frameworks for the entire nation.
E, Omernik, ecoregion download files by state, J. Bryce Dynamac CorporationJames M. Utah is made up of arid deserts and canyonlands, salt flats, wetlands, semiarid shrublands, irrigated valleys, woodlands, forested mountains, and glaciated peaks. There are 7 level III ecoregions and 37 level IV ecoregions in Utah and most continue into ecologically similar parts of adjacent states.
Regional collaborative projects such as this one in Utah, where agreement has been reached among multiple resource management agencies, is a step toward attaining consensus and consistency in ecoregion frameworks for the entire nation. Department of Agriculture-Forest Service, scale , Woods Dynamac CorporationDuane A.
Comstock OAO Corporation. Wyoming is made up of semiarid shrub- and grass-covered plains, alluvial valleys, volcanic plateaus, forested mountains, woodland- and shrubland-covered hills, glaciated peaks, lava fields, and wetlands. There are 7 level III ecoregions and 39 level IV ecoregions in Wyoming and many continue into ecologically similar parts of adjacent states.
Regional collaborative projects such as this one in Wyoming, where agreement has been reached among multiple resource management agencies, are a step toward ecoregion download files by state consensus and consistency in ecoregion frameworks for the entire nation. Chapman Dynamac CorporationSandra A.
Contact Us to ask a question, ecoregion download files by state feedback, or report a problem. Jump to main content. An official website of the United States government. Related Topics: Ecosystems Research. Contact Us. Literature Cited: Bailey, R.
Department of Agriculture - Forest Service, scale ,
Regions of the USA
, time: 4:11Ecoregion download files by state
If you do not find a link to a state that has been completed, maps and GIS data are available on the Ecoregion FTP site and web content will be available shortly. NOTE: maps and GIS files may differ. To make sure you are using the most current ecoregion data, download shapefiles of ecoregions. Conservation GIS data from The Nature Conservancy. Ecoregional Portfolio. This dataset provides a vision for conservation success for ecological systems, natural communities and species representative of an ecoregion by showing the boundaries of areas that The Nature Conservancy has prioritized for . Select a state for descriptive information about that state's Level III and IV ecoregions. Additionally, each state section contains links to downloadable maps in PDF format, and files containing GIS datasets (shapefiles, metadata, and symbology data).
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