This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

Level IV Eco Regions for New Mexico

Metadata Updated: June 25, 2014

Ecoregions by state were extracted from the seamless national shapefile. Ecoregions denote areas of general similarity in ecosystems and in the type, 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. These general purpose regions 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. The approach used to compile this map is based on the premise that ecological regions can be identified through the analysis of patterns of biotic and abiotic phenomena, including geology, physiography, vegetation, climate, soils, land use, wildlife, and hydrology. The relative importance of each characteristic varies from one ecological region to another. A Roman numeral hierarchical scheme has been adopted for different levels for ecological regions. Level I is the coarsest level, dividing North America into 15 ecological regions. Level II divides the continent into 50 regions (Commission for Environmental Cooperation Working Group, 1997). At Level III, the continental United States contains 105 regions whereas the conterminous United States has 85 (U.S. Environmental Protection Agency, 2011). Level IV ecoregions are further subdivisions of Level III ecoregions. Methods used to define the ecoregions are explained in Omernik (1995, 2004), Omernik and others (2000), and Gallant and others (1989).

Literature cited:
Commission for Environmental Cooperation Working Group, 1997, Ecological regions of North America- toward a common perspective: Montreal, Commission for Environmental Cooperation, 71 p.

Gallant, A. L., Whittier, T.R., Larsen, D.P., Omernik, J.M., and Hughes, R.M., 1989, Regionalization as a tool for managing environmental resources: Corvallis, Oregon, U.S. Environmental Protection Agency, EPA/600/3-89/060, 152p.

Omernik, J.M., 1995, Ecoregions - a framework for environmental management, in Davis, W.S. and Simon, T.P., eds., Biological assessment and criteria-tools for water resource planning and decision making: Boca Raton, Florida, Lewis Publishers, p.49-62.

Omernik, J.M., Chapman, S.S., Lillie, R.A., and Dumke, R.T., 2000, Ecoregions of Wisconsin: Transactions of the Wisconsin Academy of Science, Arts, and Letters, v. 88, p. 77-103. 

Omernik, J.M., 2004, Perspectives on the nature and definitions of ecological regions: Environmental Management, v. 34, Supplement 1, p. s27-s38.

U.S. Environmental Protection Agency. 2011. Level III and IV ecoregions of the continental United States. U.S. EPA, National Health and Environmental Effects Research Laboratory, Corvallis, Oregon, Map scale 1:3,000,000. Available online at: http://www.epa.gov/wed/pages/ecoregions/level_iii_iv.htm.

Comments and questions regarding Ecoregions should be addressed to Glenn Griffith, USGS, c/o US EPA., 200 SW 35th Street, Corvallis, OR 97333, (541)-754-4465, email:griffith.glenn@epa.gov Alternate: James Omernik, USGS, c/o US EPA, 200 SW 35th Street, Corvallis, OR 97333, (541)-754-4458, email:omernik.james@epa.gov

Access & Use Information

Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

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Dates

Metadata Date June 16, 2014
Metadata Created Date June 25, 2014
Metadata Updated Date June 25, 2014
Reference Date(s) January 28, 2014 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from New Mexico Resource Geographic Information System (NM RGIS)

Additional Metadata

Resource Type Dataset
Metadata Date June 16, 2014
Metadata Created Date June 25, 2014
Metadata Updated Date June 25, 2014
Reference Date(s) January 28, 2014 (publication)
Responsible Party U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory (NHEERL) (Point of Contact)
Contact Email
Access Constraints Access Constraints: None. Use Constraints: None
Bbox East Long -102.547958
Bbox North Lat 37.498166
Bbox South Lat 31.239256
Bbox West Long -110.0224491
Coupled Resource
Frequency Of Update asNeeded
Guid RGIS::16e30184-c975-4221-a674-a9bae784c010::ISO-19115:2003
Harvest Object Id 17029ddc-1f50-4ebb-89bc-ff0323b9328e
Harvest Source Id a9a872de-6598-4135-9eb4-4e2e3bc81748
Harvest Source Title New Mexico Resource Geographic Information System (NM RGIS)
Licence
Metadata Language
Metadata Type geospatial
Progress complete
Spatial Data Service Type
Spatial Reference System New Mexico
Spatial Harvester True

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