Level I Ecoregions of New Mexico

Data format: Shapefile

File or table name: NM_Ecoregions_Level1

Coordinate system: Universal Transverse Mercator

Theme keywords: biota, boundaries, environment, location, Biology, Conservation, Ecology, Ecosystem, Environment, Land, Natural Resources, US Ecoregion Levels III and IV, North American (CEC) Ecoregion Levels I, II, III

Abstract: 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 52 regions (Commission for Environmental Cooperation Working Group, 1997). At Level III, the continental United States contains 104 regions whereas the conterminous United States has 84 (U.S. Environmental Protection Agency, 2005). 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. Comments and questions regarding Ecoregions should be addressed to Glenn Griffith, Dynamac Corporation, 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

FGDC and ESRI Metadata:

Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.

Identification Information:


Citation:
Citation information:
Originators: US Environmental Protection Agency


Title:
Level I Ecoregions of New Mexico
*File or table name: NM_Ecoregions_Level1


Publication date: 20100501
Geospatial data presentation form: vector digital data


Series information:

Publication information:
Publication place: Corvallis, OR
Publisher: U.S. EPA Office of Research & Development (ORD) - National Health and Environmental Effects Research Laboratory (NHEERL)

Online linkage: ftp://ftp.epa.gov/wed/ecoregions/nm/nm_eco_l3.zip
Online linkage: http://www.epa.gov/wed/pages/ecoregions.htm


Larger work citation:
Citation information:
Title:


Publication date:


Series information:

Publication information:

Description:
Abstract:
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 52 regions (Commission for Environmental Cooperation Working Group, 1997). At Level III, the continental United States contains 104 regions whereas the conterminous United States has 84 (U.S. Environmental Protection Agency, 2005). 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.

      Comments and questions regarding Ecoregions should be addressed to Glenn Griffith, Dynamac Corporation, 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

Purpose:
Ecoregion maps assist managers of aquatic and terrestrial resources to understand the regional patterns of the realistically attainable quality of these resources

Supplemental information:
Electronic versions of ecoregion maps and posters, as well as other ecoregion resources are available at: http://www.epa.gov/wed/pages/ecoregions.htm.
      Symbology layers for US Levels III and IV also available.
      Level IV ecoregions are not complete for California and Arizona, as of May, 2010.  For these states, the polygons are for Level III or lower. The field "US_L4CODE" contains placeholder information derived from "US_L3CODE".  Ecoregions were digitized at 1:250,000 scale and are intended for large geographic extents (i.e. states, multiple counties, or river basins).  Use for smaller areas, such as individual counties or a 1:24,000 scale map boundary, is not recommended.

*Language of dataset: en


Time period of content:
Time period information:
Single date/time:
Calendar date: 20100501

Currentness reference:
publication date

Status:
Progress: Ongoing
Maintenance and update frequency: As needed

Spatial domain:
Bounding coordinates:
West bounding coordinate: -110.022491
East bounding coordinate: -102.547958
North bounding coordinate: 37.498166
South bounding coordinate: 31.239256

Local bounding coordinates:
*Left bounding coordinate: 114557.575296
*Right bounding coordinate: 682839.523300
*Top bounding coordinate: 4102426.125990
*Bottom bounding coordinate: 3471000.385011

Keywords:
Theme:
Theme keywords: biota, boundaries, environment, location
Theme keyword thesaurus: ISO 19115 Topic Category

Theme:
Theme keywords: Biology, Conservation, Ecology, Ecosystem, Environment, Land, Natural Resources
Theme keyword thesaurus: EPA GIS Keyword Thesaurus

Theme:
Theme keywords: US Ecoregion Levels III and IV, North American (CEC) Ecoregion Levels I, II, III
Theme keyword thesaurus: User

Place:
Place keywords: Selected State, Conterminous United States

Place:
Place keywords: New Mexico, United States
Place keyword thesaurus: None

Access constraints: None
Use constraints:
None

Point of contact:
Contact information:
Contact person primary:
Contact person: Marc Weber
Contact organization: U.S. Environmental Protection Agency, Office of Research & Development (ORD) - National Health and Environmental Effects Research Laboratory (NHEERL)
Contact position: GIS Analyst


Contact address:
Address type: mailing and physical address
Address:
200 S.W. 35th St.
City: Corvallis
State or province: OR
Postal code: 97333

Contact voice telephone: (541) 754-4469


Contact electronic mail address: weber.marc@epa.gov


Contact instructions:
http://www.epa.gov/

Security information:
Security classification system: FIPS Pub 199
Security classification: No Confidentiality
Security handling description: Standard Technical Controls

*Native dataset format: Shapefile
Native data set environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3000


Cross reference:
Citation information:
Title:
Ecoregions of the United States


Back to Top
Data Quality Information:


Logical consistency report:
Although ecoregion polygons and attributes have been checked for accuracy, some errors may remain.
    Polygons along state borders were reviewed and updated, May 2010.

Completeness report:
Level IV ecoregions are not complete for California and Arizona, as of May, 2010.  For these states, the polygons are for Level III or lower.  The field 'US_L4CODE" contains placeholder information derived from "US_L3CODE".  Ecoregions were digitized at 1:250,000 scale and are intended for large geographic extents (i.e. states, multiple counties, or river basins).  Use for smaller areas, such as individual counties or a 1:24,000 scale map boundary, is not recommended.

Positional accuracy:
Horizontal positional accuracy:
Horizontal positional accuracy report:
Data were collected using methods that have unknown accuracy (EPA National Geospatial Data Policy [NGDP] Accuracy Tier 10). For more information, please see EPA's NGDP at http://epa.gov/geospatial/policies.html)

Lineage:
Source information:
Source contribution:
The state borders were derived from the dtl_st.sdc on the ArcGIS DVD provided by ESRI.  It was modified by removing Alaska and Hawaii polygons and all but the State field, adding some coastal islands based on imagery or NHDPlus areas, and restoring topology (removing internal gaps and small overlaps).  The EPA regions were added to this custom geodatabase (dtl_48plyf) prior to the intersection process with the seamless ecoregion data.

Process step:
Process description:
1) U.S.G.S. 1:250,000 topographic maps are used to delineate the ecoregions. The lines drawn are manually digitized or scanned to produce georeferenced electronic files. 2) All base maps are joined together and errors along the edges are resolved. 3) Topology is established and the maps are reviewed for accuracy, completeness, and conformity with the original lines. Corrections are made as needed and topology regenerated. 4) Attributes are added. 5) Maps are plotted for visual inspection by two individuals and necessary changes made.  6) Ecoregions from all available states are merged and dissolved to identify and correct inconsistencies. 7) Polygons of the corrected seamless ecoregion features are extended beyond the coastal borders.  8) State and Ecoregion datasets are intersected. 9) Topology errors removed. 10) Final QA

Process date: 20100526


Process step:
Process description:
Dataset copied.

Process date: 20110926
Process time: 13123700


Source used citation abbreviation:


Back to Top
Spatial Data Organization Information:


Direct spatial reference method: Vector


Point and vector object information:
SDTS terms description:
*Name: NM_Ecoregions_Level1
SDTS point and vector object type: G-polygon
Point and vector object count: 8

ESRI terms description:
*Name: NM_Ecoregions_Level1
*ESRI feature type: Simple
*ESRI feature geometry: Polygon
*ESRI topology: FALSE
*ESRI feature count: 8
*Spatial index: FALSE
*Linear referencing: FALSE


Back to Top
Spatial Reference Information:


Horizontal coordinate system definition:
Coordinate system name:
*Projected coordinate system name: NAD_1983_UTM_Zone_13N
*Geographic coordinate system name: GCS_North_American_1983

Planar:
Grid coordinate system:
*Grid coordinate system name: Universal Transverse Mercator
Universal Transverse Mercator:
*UTM zone number: 13
Transverse mercator:
*Scale factor at central meridian: 0.999600
*Longitude of central meridian: -105.000000
*Latitude of projection origin: 0.000000
*False easting: 500000.000000
*False northing: 0.000000

Planar coordinate information:
Planar coordinate encoding method: coordinate pair
Coordinate representation:
Abscissa resolution: 0.000001
Ordinate resolution: 0.000001
Planar distance units: meters

Geodetic model:
Horizontal datum name: North American Datum of 1983
Ellipsoid name: Geodetic Reference System 80
Semi-major axis: 6378137.000000
Denominator of flattening ratio: 298.257222

Back to Top
Entity and Attribute Information:


Detailed description:
*Name: NM_Ecoregions_Level1


Entity type:
Entity type label: nm_eco_l3
*Entity type type: Feature Class
*Entity type count: 8

Attribute:
Attribute label: FID
*Attribute alias: FID
Attribute definition:
Internal feature number.
Attribute definition source:
ESRI

*Attribute type: OID
*Attribute width: 4
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
Unrepresentable domain:
Sequential unique whole numbers that are automatically generated.


Attribute:
Attribute label: Shape
*Attribute alias: Shape
Attribute definition:
Feature geometry.
Attribute definition source:
ESRI

*Attribute type: Geometry
*Attribute width: 0
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
Unrepresentable domain:
Coordinates defining the features.


Attribute:
Attribute label: US_L3CODE
*Attribute alias: US_L3CODE
Attribute definition:
Code for Level III Ecoregion (US)
Attribute definition source:
USEPA

*Attribute type: String
*Attribute width: 10


Attribute:
Attribute label: US_L3NAME
*Attribute alias: US_L3NAME
Attribute definition:
Name for Level III Ecoregion (US)
Attribute definition source:
USEPA

*Attribute type: String
*Attribute width: 100


Attribute:
Attribute label: NA_L3CODE
*Attribute alias: NA_L3CODE
Attribute definition:
Code for Level III Ecoregion (North America)
Attribute definition source:
CEC

*Attribute type: String
*Attribute width: 20


Attribute:
Attribute label: NA_L3NAME
*Attribute alias: NA_L3NAME
Attribute definition:
Name for Level III Ecoregion (North America)
Attribute definition source:
CEC

*Attribute type: String
*Attribute width: 100


Attribute:
Attribute label: NA_L2CODE
*Attribute alias: NA_L2CODE
Attribute definition:
Code for Level II Ecoregion (North America)
Attribute definition source:
CEC

*Attribute type: String
*Attribute width: 20


Attribute:
Attribute label: NA_L2NAME
*Attribute alias: NA_L2NAME
Attribute definition:
Name for Level II Ecoregion (North America)
Attribute definition source:
CEC

*Attribute type: String
*Attribute width: 100


Attribute:
Attribute label: NA_L1CODE
*Attribute alias: NA_L1CODE
Attribute definition:
Code for Level I Ecoregion (North America)
Attribute definition source:
CEC

*Attribute type: String
*Attribute width: 20


Attribute:
Attribute label: NA_L1NAME
*Attribute alias: NA_L1NAME
Attribute definition:
Name for Level I Ecoregion (North America)
Attribute definition source:
CEC

*Attribute type: String
*Attribute width: 100


Attribute:
Attribute label: STATE_NAME
*Attribute alias: STATE_NAME
Attribute definition:
Name of State (US)

*Attribute type: String
*Attribute width: 25


Attribute:
Attribute label: EPA_REGION
*Attribute alias: EPA_REGION
Attribute definition:
EPA Administrative Region

*Attribute type: Number
*Attribute width: 4


Attribute:
Attribute label: L3_KEY
*Attribute alias: L3_KEY
Attribute definition:
US Level III Code and Name for Legend, Match to Style

*Attribute type: String
*Attribute width: 125


Attribute:
Attribute label: L2_KEY
*Attribute alias: L2_KEY
Attribute definition:
NA Level II Code and Name for Legend, Match to Style

*Attribute type: String
*Attribute width: 125


Attribute:
Attribute label: L1_KEY
*Attribute alias: L1_KEY
Attribute definition:
NA Level I Code and Name for Legend, Match to Style

*Attribute type: String
*Attribute width: 125


Attribute:
*Attribute label: NM_L1_KEY
*Attribute alias: NM_L1_KEY


*Attribute type: String
*Attribute width: 40


Back to Top
Distribution Information:


Resource description: Downloadable Data


Standard order process:
Digital form:
Digital transfer information:
*Transfer size: 1.169
*Dataset size: 1.169

Back to Top
Metadata Reference Information:


Metadata date: 20110308
Metadata future review date: 20140920


*Language of metadata: en


Metadata contact:
Contact information:
Contact person primary:
Contact person: Colleen Burch Johnson
Contact organization: SRA / Raytheon Contractors to US EPA
Contact position: GIS Analyst


Contact address:
Address type: mailing and physical address
Address:
200 S.W. 35th St
City: Corvallis
State or province: OR
Postal code: 97333

Contact voice telephone: (541) 754-4454


Contact electronic mail address: johnson.colleen@epa.gov


Contact instructions:
http://www.epa.gov/

Metadata standard name: FGDC Content Standards for Digital Geospatial Metadata
Metadata standard version: FGDC-STD-001-1998
Metadata time convention: local time


Metadata extensions:
*Online linkage: http://www.esri.com/metadata/esriprof80.html
*Profile name: ESRI Metadata Profile

Back to Top