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Bailey's Ecoregions and Subregions of the United States, Puerto Rico, and the U.S. Virgin Islands

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: USDA Forest Service
Publication_Date: 200403
Title:
Bailey's Ecoregions and Subregions of the United States, Puerto Rico, and the U.S. Virgin Islands
Publication_Information:
Publication_Place: Reston, VA
Publisher: National Atlas of the United States
Online_Linkage:
<http://nationalatlas.gov/atlasftp.html?openChapters=chpbio#chpbio>
Online_Linkage: <http://www.fs.fed.us/institute/ecoregions/eco_download.html>
Description:
Abstract:
This map layer is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.S. Virgin Islands. Four levels of detail are included to show a hierarchy of ecosystems. The largest ecosystems are domains, which are groups of related climates and which are differentiated based on precipitation and temperature. Divisions represent the climates within domains and are differentiated based on precipitation levels and patterns as well as temperature. Divisions are subdivided into provinces, which are differentiated based on vegetation or other natural land covers. The finest level of detail is described by subregions, called sections, which are subdivisions of provinces based on terrain features. Also identified are mountainous areas that exhibit different ecological zones based on elevation.
Purpose:
These data are intended for geographic display and analysis at the national level, and for large regional areas. The data should be displayed and analyzed at scales appropriate for 1:7,500,000-scale data. No responsibility is assumed by the National Atlas of the United States in the use of these data.
Supplemental_Information:
The same data are available from both the National Atlas of the United States and from the USDA Forest Service Inventory and Monitoring Institute.

Detailed descriptions of the domains, divisions, and provinces represented in this map layer are available at: <http://www.fs.fed.us/institute/ecoregions/ecoreg1_home.html>. Detailed descriptions of the sections represented in this map layer are available at: <http://www.fs.fed.us/land/pubs/ecoregions/>.

Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 200402
Currentness_Reference: Publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -127.840621
East_Bounding_Coordinate: -65.403767
North_Bounding_Coordinate: 51.540005
South_Bounding_Coordinate: 22.948654
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: biota
Theme_Keyword: environment
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Ecoregions
Theme_Keyword: Bailey's ecoregions
Theme_Keyword: Ecosystems
Theme_Keyword: Regional Ecology
Theme_Keyword: Ecosystem Geography
Theme_Keyword: Mapping
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: United States
Place:
Place_Keyword_Thesaurus:
U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the Outlying Areas of The United States, and Associated Areas (FIPS 5-2): Washington, DC, National Institute of Standards and Technology.
Place_Keyword: Alabama
Place_Keyword: Alaska
Place_Keyword: Arizona
Place_Keyword: Arkansas
Place_Keyword: California
Place_Keyword: Colorado
Place_Keyword: Connecticut
Place_Keyword: Delaware
Place_Keyword: District of Columbia
Place_Keyword: Florida
Place_Keyword: Georgia
Place_Keyword: Hawaii
Place_Keyword: Idaho
Place_Keyword: Illinois
Place_Keyword: Indiana
Place_Keyword: Iowa
Place_Keyword: Kansas
Place_Keyword: Kentucky
Place_Keyword: Louisiana
Place_Keyword: Maine
Place_Keyword: Maryland
Place_Keyword: Massachusetts
Place_Keyword: Michigan
Place_Keyword: Minnesota
Place_Keyword: Mississippi
Place_Keyword: Missouri
Place_Keyword: Montana
Place_Keyword: Nebraska
Place_Keyword: Nevada
Place_Keyword: New Hampshire
Place_Keyword: New Jersey
Place_Keyword: New Mexico
Place_Keyword: New York
Place_Keyword: North Carolina
Place_Keyword: North Dakota
Place_Keyword: Ohio
Place_Keyword: Oklahoma
Place_Keyword: Oregon
Place_Keyword: Pennsylvania
Place_Keyword: Rhode Island
Place_Keyword: South Carolina
Place_Keyword: South Dakota
Place_Keyword: Tennessee
Place_Keyword: Texas
Place_Keyword: Utah
Place_Keyword: Vermont
Place_Keyword: Virginia
Place_Keyword: Washington
Place_Keyword: West Virginia
Place_Keyword: Wisconsin
Place_Keyword: Wyoming
Place_Keyword: Puerto Rico
Place_Keyword: U.S. Virgin Islands
Access_Constraints: None
Use_Constraints:
None. Acknowledgment of the USDA Forest Service and (or) the National Atlas of the United States of America would be appreciated in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Robert G. Bailey
Contact_Organization: USDA Forest Service Inventory and Monitoring Institute
Contact_Address:
Address_Type: Mailing and physical address
Address: 2150 Centre Ave, Bldg A
City: Fort Collins
State_or_Province: CO
Postal_Code: 80526
Country: USA
Contact_Voice_Telephone: 970-295-5727
Contact_Facsimile_Telephone: 970-295-5885
Contact_Electronic_Mail_Address: rgbailey@fs.fed.us
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 1; ESRI ArcCatalog 8.1.0.642.
Cross_Reference:
Citation_Information:
Originator: Robert G. Bailey
Publication_Date: 1995
Title: Description of the Ecoregions of the United States
Edition: Second Edition, Revised and Enlarged
Geospatial_Data_Presentation_Form: Map
Series_Information:
Series_Name: Miscellaneous Publication
Issue_Identification: 1391
Publication_Information:
Publication_Place: Washington, DC
Publisher: USDA Forest Service
Other_Citation_Details: 108 pages with separate map at 1:7,500,000
Online_Linkage: <http://www.fs.fed.us/institute/ecoregions/ecoreg1_home.html>
Cross_Reference:
Citation_Information:
Originator: USDA Forest Service
Publication_Date: 200506
Title: Omernik’s Level III Ecoregions of the Continental United States
Geospatial_Data_Presentation_Form: Map
Publication_Information:
Publication_Place: Reston, VA
Publisher: National Atlas of the United States
Online_Linkage:
<http://nationalatlas.gov/atlasftp.html?openChapters=chpbio#chpbio>
Online_Linkage:
<http://www.epa.gov/wed/pages/ecoregions/ecoregions.htm>


Data_Quality_Information:
Logical_Consistency_Report:
No checks for topological consistency were performed on this map layer.
Completeness_Report:
This map layer includes ecoregions and subregions information for the United States, the District of Columbia, Puerto Rico, and the U.S. Virgin Islands.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Bailey, R.G.
Originator: McNab, W.H.
Originator: Avers, P.E.
Originator: King, T.
Publication_Date: 1994
Title: Ecoregions and Subregions of the United States (Lower 48)
Geospatial_Data_Presentation_Form: Vector digital data
Publication_Information:
Publication_Place: Washington, DC
Publisher: USDA Forest Service
Source_Scale_Denominator: 7500000
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1994
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: FS Lower48 Ecoregions
Source_Contribution: Spatial and attribute information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Bailey, R.G.
Originator: McNab, W.H.
Originator: Avers, P.E.
Originator: King, T.
Publication_Date: 1994
Title: Ecoregions and Subregions of Alaska
Geospatial_Data_Presentation_Form: Vector digital data
Publication_Information:
Publication_Place: Washington, DC
Publisher: USDA Forest Service
Source_Scale_Denominator: 7500000
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1994
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: FS Alaska Ecoregions
Source_Contribution: Spatial and attribute information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Bailey, R.G.
Originator: McNab, W.H.
Originator: Avers, P.E.
Originator: King, T.
Publication_Date: 1994
Title: Ecoregions and Subregions of Hawaii
Geospatial_Data_Presentation_Form: Vector digital data
Publication_Information:
Publication_Place: Washington, VA
Publisher: USDA Forest Service
Source_Scale_Denominator: 7500000
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1994
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: FS Hawaii Ecoregions
Source_Contribution: Attribute information

Source_Information:
Source_Citation:
Citation_Information:
Originator: Bailey, R.G.
Originator: McNab, W.H.
Originator: Avers, P.E.
Originator: King, T.
Publication_Date: 1994
Title: Ecoregions and Subregions of Puerto Rico and the Virgin Islands
Geospatial_Data_Presentation_Form: Vector digital data
Publication_Information:
Publication_Place: Washington, DC
Publisher: USDA Forest Service
Source_Scale_Denominator: 7500000
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1994
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: FS PR_VI Ecoregions
Source_Contribution: Attribute information

Source_Information:
Source_Citation:
Citation_Information:
Originator: National Atlas of the United States
Publication_Date: 200206
Title: State Boundaries of the United States
Publication_Information:
Publication_Place: Reston, VA
Publisher: National Atlas of the United States
Online_Linkage:
<http://nationalatlas.gov/atlasftp.html?openChapters=chpbound#chpbound>
Source_Scale_Denominator: 2000000
Type_of_Source_Media: Online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1972
Ending_Date: 2002
Source_Currentness_Reference: Ground condition
Source_Citation_Abbreviation: Atlas-States
Source_Contribution: Spatial information

Process_Step:
Process_Description:
The USDA Forest Service ecoregions shapefile for the 48 conterminous States and the export file for Alaska were downloaded and reprojected to a Lambert Azimuthal Equal Area projection using ArcInfo. The shorelines were removed and replaced with shorelines from the National Atlas States map layer. Linework was cleaned and adjusted. USDS Forest Service ecoregions attribution for Hawaii, Puerto Rico, and the U.S. Virgin Islands was added to the polygons for those areas defined by the National Atlas shorelines.

The polygon attribution was checked and the following corrections were made: For Ecocode = -263A the Province field was blank; this was corrected to California Coastal Steppe-Mixed Forest-Redwood Forest Province. For Ecocode = M242A, Ecocode = M242B, and Ecocode = M242C the Division was corrected from Marine Regime Mountains Redwood Forest Province to Marine Regime Mountains.

Source_Used_Citation_Abbreviation: FS Lower48 Ecoregions
Source_Used_Citation_Abbreviation: FS Alaska Ecoregions
Source_Used_Citation_Abbreviation: FS Hawaii Ecoregions
Source_Used_Citation_Abbreviation: FS PR_VI Ecoregions
Source_Used_Citation_Abbreviation: Atlas-States
Process_Date: 200401


Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 3072


Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000278
Longitude_Resolution: 0.000278
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: GRS1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222


Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Ecoregion (described by ecoregp075.dbf)
Entity_Type_Definition:
An ecosystem of regional extent. The polygons in this map layer represent subregion sections, which are the finest level of detail. Sections are further classified into provinces, divisions, and domains.
Entity_Type_Definition_Source: National Atlas of the United States
Attribute:
Attribute_Label: Shape
Attribute_Definition: The representation of the entity in the data.
Attribute_Definition_Source: National Atlas of the United States
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Polygon
Enumerated_Domain_Value_Definition: 2-dimensional element
Enumerated_Domain_Value_Definition_Source: ESRI GIS software
Attribute:
Attribute_Label: Area
Attribute_Definition:
The size of the shape in coverage units. In the distributed file, coverage units represent square decimal degrees.
Attribute_Definition_Source: National Atlas of the United States
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.000
Range_Domain_Maximum: 34.509
Attribute:
Attribute_Label: Perimeter
Attribute_Definition:
The perimeter of the shape in coverage units. In the distributed file, coverage units represent decimal degrees.
Attribute_Definition_Source: National Atlas of the United States
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.010
Range_Domain_Maximum: 65.705
Attribute:
Attribute_Label: Ecoregp075
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: National Atlas of the United States
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 3073
Attribute:
Attribute_Label: Ecocode
Attribute_Definition:
A five-character code that corresponds to the narrative description in the attribute Section. Ecocode and Section represent the lowest mapping level in the hierarchy of ecoregions and subregions. The first character is an indication of whether the section is mountainous. The next three digits are a code identifying the province, and the last character is a letter identifying the section within the province.
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -124A
Range_Domain_Maximum: M423A
Attribute:
Attribute_Label: Domain
Attribute_Definition:
A major ecoregion distinguished from other domains by climate, precipitation and temperature. This is the highest level in the hierarchy of ecoregions.
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Dry domain
Enumerated_Domain_Value_Definition:
An ecoregion whose most important characteristic is the dryness of the environment. This domain annually loses more water through evaporation from the surface than it gains through precipitation.
Enumerated_Domain_Value_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Humid temperate domain
Enumerated_Domain_Value_Definition:
An ecoregion located in the middle latitudes and with a climate controlled by both tropical and polar air masses. This domain has pronounced seasons with strong annual cycles of temperature and precipitation.
Enumerated_Domain_Value_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Humid tropical domain
Enumerated_Domain_Value_Definition:
An ecoregion located in the low latitudes and with a climate controlled by tropical and equatorial air masses. This domain has no winter season and experiences heavy average annual rainfall.
Enumerated_Domain_Value_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Polar domain
Enumerated_Domain_Value_Definition:
An ecoregion located at high latitude and with a climate controlled by polar and arctic air masses. This domain has low temperatures, severe winters, and small amounts of precipitation.
Enumerated_Domain_Value_Definition_Source: USDA Forest Service
Attribute:
Attribute_Label: Division
Attribute_Definition:
A subdivision of a domain. A division represents a climate within a domain and is differentiated from other divisions based on precipitation levels and patterns as well as temperature. This is the second level in the hierarchy of ecoregions.
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (See table below)
Enumerated_Domain_Value_Definition:
The values for Division are listed below, along with the domains with which they are associated. Detailed definitions of divisions can be found at <http://www.fs.fed.us/colorimagemap/ecoreg1_divisions.html>.

Domain                   Divisions
-------------------------------------------------------------------
Dry Domain               Temperate Desert Division
                         Temperate Desert Regime Mountains
                         Temperate Steppe Division
                         Temperate Steppe Regime Mountains
                         Tropical/Subtropical Desert Division
                         Tropical/Subtropical Regime Mountains
                         Tropical/Subtropical Steppe Division

Humid temperate domain   Hot Continental Division
                         Hot Continental Regime Mountains
                         Marine Division
                         Marine Regime Mountains
                         Mediterranean Division
                         Mediterranean Regime Mountains
                         Prairie Division
                         Subtropical Division
                         Subtropical Regime Mountains
                         Warm Continental Division
                         Warm Continental Regime Mountains

Humid tropical domain    Rainforest Regime Mountains
                         Savanna Division
                         Savanna Regime Mountains

Polar domain             Subarctic Division
                         Subarctic Regime Mountains
                         Tundra Division
                         Tundra Regime Mountains
Enumerated_Domain_Value_Definition_Source: USDA Forest Service
Attribute:
Attribute_Label: Province
Attribute_Definition:
A subdivision of a division. A province represents variations in vegetation or other natural land covers within a division. Mountainous areas that exhibit different ecological zones based on elevation (elevational zonation) are distinguished according to the character of the zonation by listing the elevational zones from lower to upper. This is the third level in the hierarchy of ecoregions.
Attribute_Definition_Source: National Atlas of the United States
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (See table below)
Enumerated_Domain_Value_Definition:
The values for Province are listed below, along with the divisions with which they are associated. Detailed definitions of provinces can be found at <http://www.fs.fed.us/colorimagemap/ecoreg1_provinces.html>.

Division          Provinces
-------------------------------------------------------------------
Hot Continental Division
                  Eastern Broadleaf Forest (Oceanic) Province
                  Eastern Broadleaf Forest (Continental) Province

Hot Continental Regime Mountains
                  Central Appalachian Broadleaf Forest-Coniferous
                    Forest-Meadow Province
                  Ozark Broadleaf Forest - Meadow Province

Marine Division
                  Pacific Lowland Mixed Forest Province

Marine Regime Mountains
                  Cascade Mixed Forest-Coniferous Forest-Alpine
                    Meadow Province
                  Pacific Coastal Mountains Forest-Meadow
                    Province
                  Pacific Gulf Coastal Forest-Meadow Province

Mediterranean Division
                  California Coastal Chaparral Forest and Shrub
                    Province
                  California Coastal Steppe-Mixed Forest-Redwood
                    Forest Province
                  California Dry Steppe Province

Mediterranean Regime Mountains
                  California Coastal Range Open Woodland-Shrub-
                    Coniferous Forest-Meadow Province
                  Sierran Steppe-Mixed Forest-Coniferous Forest-
                    Alpine Meadow Province

Prairie Division
                  Prairie Parkland (Subtropical) Province
                  Prairie Parkland (Temperate) Province

Rainforest Regime Mountains
                  Hawaiian Islands Province

Savanna Division
                  Everglades Province

Savanna Regime Mountains
                  Puerto Rico Province

Subarctic Division
                  Coastal Trough Humid Tayga Province
                  Upper Yukon Tayga Province
                  Yukon Intermontane Plateaus Tayga Province

Subarctic Regime Mountains
                  Alaska Range Humid Tayga-Tundra-Meadow Province
                  Upper Yukon Tayga-Meadow Province
                  Yukon Intermontane Plateaus Tayga-Meadow
                    Province

Subtropical Division
                  Lower Mississippi Riverine Forest Province
                  Outer Coastal Plain Mixed Forest Province
                  Southeastern Mixed Forest Province

Subtropical Regime Mountains
                  Ouachita Mixed Forest - Meadow Province

Temperate Desert Division
                  Intermountain Semi-Desert Province
                  Intermountain Semi-Desert and Desert Province

Temperate Desert Regime Mountains
                  Nevada-Utah Mountains-Semi-Desert-Coniferous
                    Forest-Alpine Meadow Province

Temperate Steppe Division
                  Great Plains-Palouse Dry Steppe Province
                  Great Plains Steppe Province

Temperate Steppe Regime Mountains
                  Black Hills Coniferous Forest Province
                  Middle Rocky Mountain Steppe-Coniferous Forest-
                    Alpine Meadow Province
                  Northern Rocky Mountain Forest-Steppe-Coniferous
                    Forest-Alpine Meadow Province
                  Southern Rocky Mountain Steppe-Open Woodland-
                    Coniferous Forest-Alpine Meadow Province

Tropical/Subtropical Desert Division
                  American Semi-Desert and Desert Province
                  Chihuahuan Semi-Desert Province

Tropical/Subtropical Regime Mountains
                  Arizona-New Mexico Mountains Semi-Desert-Open
                    Woodland-Coniferous Forest-Alpine Meadow
                    Province

Tropical/Subtropical Steppe Division
                  Colorado Plateau Semi-Desert Province
                  Great Plains Steppe and Shrub Province
                  Southwest Plateau and Plains Dry Steppe and Shrub
                    Province

Tundra Division
                  Arctic Tundra Province
                  Bering Tundra (Northern) Province
                  Bering Tundra (Southern) Province

Tundra Regime Mountains
                  Ahklun Mountains Tundra-Meadow Province
                  Aleutian Oceanic Meadow-Heath Province
                  Brooks Range Tundra-Polar Desert Province
                  Seward Peninsula Tundra-Meadow Province

Warm Continental Division
                  Laurentian Mixed Forest Province

Warm Continental Regime Mountains
                  Adirondack-New England Mixed Forest-Coniferous
                    Forest-Alpine Meadow Province
Enumerated_Domain_Value_Definition_Source: USDA Forest Service
Attribute:
Attribute_Label: Section
Attribute_Definition:
A subdivision of a province. A section represents different landform groupings within a province. This is the lowest level in the hierarchy of ecoregions and subregions. Narrative descriptions of sections correspond to unique Ecocode values, above.
Attribute_Definition_Source: National Atlas of the United States
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (See table below)
Enumerated_Domain_Value_Definition:
The values for Section are listed below, along with the provinces with which they are associated. Detailed definitions of sections can be found at <http://www.fs.fed.us/land/pubs/ecoregions/>.

Province
Ecocode     Section
-------------------------------------------------------------------
Adirondack-New England Mixed Forest-Coniferous Forest-Alpine Meadow
  Province
M212A       White Mountains Section
M212B       New England Piedmont Section
M212C       Green, Taconic, Berkshire Mountains Section
M212D       Adirondack Highlands Section
M212E       Catskill Mountains Section

Ahklun Mountains Tundra-Meadow Province
M126A       Ahklun Mountains Section

Alaska Range Humid Tayga-Tundra-Meadow Province
M135A       Alaska Mountains Section
M135B       Wrangell Mountains Section

Aleutian Oceanic Meadow-Heath Province
M127A       Alaska Peninsula Section
M127B       Aleutian Islands Section
M127C       West Kodiak Island Section

American Semi-Desert and Desert Province
-322A       Mojave Desert Section
-322B       Sonoran Desert Section
-322C       Colorado Desert Section

Arctic Tundra Province
-124A       Coastal Plain

Arizona-New Mexico Mountains Semi-Desert-Open Woodland-Coniferous
  Forest-Alpine Meadow Province
M313A       White Mountain-San Francisco Peaks-Mogollon Rim Section
M313B       Sacramento-Monzano Mountain Section

Bering Tundra (Northern) Province
-125A       Kotzebue Sound Lowlands Section
-125B       Yukon-Kuskokwim Delta Section

Bering Tundra (Southern) Province
-126A       Bristol Bay Lowlands Section

Black Hills Coniferous Forest Province
M334A       Black Hills Section

Brooks Range Tundra-Polar Desert Province
M121A       Foothills Section
M121B       Mountains Section

California Coastal Chaparral Forest and Shrub Province
-261A       Central California Coast Section
-261B       Southern California Coast Section

California Coastal Range Open Woodland-Shrub-Coniferous Forest-
  Meadow Province
M262A       Central California Coast Ranges Section
M262B       Southern California Mountains and Valleys Section

California Coastal Steppe-Mixed Forest-Redwood Forest Province
-263A       Northern California Coast Section

California Dry Steppe Province
-262A       Great Valley Section

Cascade Mixed Forest-Coniferous Forest-Alpine Meadow Province
M242A       Oregon and Washington Coast Ranges Section
M242B       Western Cascades Section
M242C       Eastern Cascades Section

Central Appalachian Broadleaf Forest-Coniferous Forest-Meadow
  Province
M221A       Northern Ridge and Valley Section
M221B       Allegheny Mountains Section
M221C       Northern Cumberland Mountains Section
M221D       Blue Ridge Mountains Section

Chihuahuan Semi-Desert Province
-321A       Basin and Range Section
-321B       Stockton Plateau Section

Coastal Trough Humid Tayga Province
-135A       Cook Inlet Lowlands Section
-135B       Copper River Basin Section

Colorado Plateau Semi-Desert Province
-313A       Grand Canyon Section
-313B       Navajo Canyonlands Section
-313C       Tonto Transition Section
-313D       Painted Desert Section
-313E       Central Rio Grande Intermontane Section

Eastern Broadleaf Forest (Continental) Province
-222A       Ozark Highlands Section
-222C       Upper Gulf Coastal Plain Section
-222D       Interior Low Plateau, Shawnee Hills Section
-222E       Interior Low Plateau, Highland Rim Section
-222F       Interior Low Plateau, Bluegrass Section
-222G       Central Till Plains, Oak-Hickory Section
-222H       Central Till Plains, Beech-Maple Section
-222I       Erie and Ontario Lake Plain Section
-222J       South Central Great Lakes Section
-222K       Southwestern Great Lakes Morainal Section
-222L       North-Central U.S. Driftless and Escarpment Section
-222M       Minnesota and Northeastern Iowa, Morainal, Oak Savanna
              Section
-222N       Lake Agassiz, Aspen Parklands Section

Eastern Broadleaf Forest (Oceanic) Province
-221A       Lower New England Section
-221B       Hudson Valley Section
-221C       Upper Atlantic Coastal Plain Section
-221D       Northern Appalachian Piedmont Section
-221E       Southern Unglaciated Allegheny Plateau Section
-221F       Western Glaciated Allegheny Plateau Section
-221H       Northern Cumberland Plateau Section
-221I       Southern Cumberland Mountains Section
-221J       Central Ridge and Valley Section

Everglades Province
-411A       Everglades Section

Great Plains Steppe Province
-332A       Northeastern Glaciated Plains Section
-332B       Western Glaciated Plains Section
-332C       Nebraska Sand Hills Section
-332D       North-Central Great Plains Section
-332E       South-Central Great Plains Section

Great Plains Steppe and Shrub Province
-311A       Redbed Plains Section

Great Plains-Palouse Dry Steppe Province
-331A       Palouse Prairie Section
-331B       Southern High Plains Section
-331C       Central High Tablelands Section
-331D       Northwestern Glaciated Plains Section
-331E       Northern Glaciated Plains Section
-331F       Northwestern Great Plains Section
-331G       Powder River Basin Section
-331H       Central High Plains Section
-331I       Arkansas Tablelands Section
-331J       Northern Rio Grande Basin Section

Hawaiian Islands Province
M423A       Hawaiian Islands Section

Intermountain Semi-Desert Province
-342A       Bighorn Basin Section
-342B       Northwestern Basin and Range Section
-342C       Owyhee Uplands Section
-342D       Snake River Basalts Section
-342E       Bear Lake Section
-342F       Central Basin and Hills Section
-342G       Green River Basin Section
-342H       High Lava Plains Section
-342I       Columbia Basin Section

Intermountain Semi-Desert and Desert Province
-341A       Bonneville Basin Section
-341B       Northern Canyon Lands Section
-341C       Uinta Basin Section
-341D       Mono Section
-341E       Lahontan Basin Section
-341F       Southeastern Great Basin Section
-341G       Northeastern Great Basin Section

Laurentian Mixed Forest Province
-212A       Aroostook Hills and Lowlands Section
-212B       Maine and New Brunswick Foothills and Eastern Lowlands
              Section
-212C       Fundy Coastal and Interior Section
-212D       Central Maine Coastal and Interior Section
-212E       St. Lawrence and Champlain Valley Section
-212F       Northern Glaciated Allegheny Plateau Section
-212G       Northern Unglaciated Allegheny Plateau Section
-212H       Northern Great Lakes Section
-212J       Southern Superior Uplands Section
-212K       Western Superior Section
-212L       Northern Superior Uplands Section
-212M       Northern Minnesota and Ontario Section
-212N       Northern Minnesota Draft and Lake Plains Section

Lower Mississippi Riverine Forest Province
-234A       Mississippi Alluvial Basin Section

Middle Rocky Mountain Steppe-Coniferous Forest-Alpine Meadow
  Province
M332A       Idaho Batholith Section
M332B       Bitterroot Valley Section
M332C       Rocky Mountain Front Section
M332D       Belt Mountains Section
M332E       Beaverhead Mountains Section
M332F       Challis Volcanics Section
M332G       Blue Mountains Section

Nevada-Utah Mountains-Semi-Desert-Coniferous Forest-Alpine Meadow
  Province
M341A       Central Great Basin Mountains Section
M341B       Tavaputs Plateau Section
M341C       Utah High Plateaus and Mountains Section

Northern Rocky Mountain Forest-Steppe-Coniferous Forest-Alpine
  Meadow Province
M333A       Okanogan Highlands Section
M333B       Flathead Valley Section
M333C       Northern Rockies Section
M333D       Bitterroot Mountains Section

Ouachita Mixed Forest - Meadow Province
M231A       Ouachita Mountains Section

Outer Coastal Plain Mixed Forest Province
-232A       Middle Atlantic Coastal Plain Section
-232B       Coastal Plains and Flatwoods, Lower Section
-232C       Atlantic Coastal Flatlands Section
-232D       Florida Coastal Lowlands (Western) Section
-232E       Louisiana Coast Prairies and Marshes Section
-232F       Coastal Plains and Flatwoods, Western Gulf Section
-232G       Florida Coastal Lowlands (Eastern) Section

Ozark Broadleaf Forest - Meadow Province
M222A       Boston Mountains Section

Pacific Coastal Mountains Forest-Meadow Province
M244A       Chugach-St. Elias Mountains Section
M244B       Lynn Canal Section
M244C       Boundary Range Section

Pacific Gulf Coastal Forest-Meadow Province
M245A       Northern Gulf Section
M245B       Northern Alexander Archipelago Section
M245C       Southern Alexander Archipelago Section

Pacific Lowland Mixed Forest Province
-242A       Willamette Valley and Puget Trough Section

Prairie Parkland (Subtropical) Province
-255A       Cross Timbers and Prairie Section
-255B       Blackland Prairies Section
-255C       Oak Woods and Prairies Section
-255D       Central Gulf Prairies and Marshes Section

Prairie Parkland (Temperate) Province
-251A       Red River Valley Section
-251B       North-Central Glaciated Plains Section
-251C       Central Dissected Till Plains Section
-251D       Central Till Plains Section
-251E       Osage Plains Section
-251F       Flint Hills Section
-251G       Central Loess Plains Section

Puerto Rico Province
M411A       Dry-Humid Mountains Section

Seward Peninsula Tundra-Meadow Province
M125A       Seward Mountains Section

Sierran Steppe-Mixed Forest-Coniferous Forest-Alpine Meadow
  Province
M261A       Klamath Mountains Section
M261B       Northern California Coast Ranges Section
M261C       Northern California Interior Coast Ranges Section
M261D       Southern Cascades Section
M261E       Sierra Nevada Section
M261F       Sierra Nevada Foothills Section
M261G       Modoc Plateau Section

Southeastern Mixed Forest Province
-231A       Southern Appalachian Piedmont Section
-231B       Coastal Plains, Middle Section
-231C       Southern Cumberland Plateau Section
-231D       Southern Ridge and Valley Section
-231E       Mid Coastal Plains, Western Section
-231F       Eastern Gulf Prairies and Marshes Section
-231G       Arkansas Valley Section

Southern Rocky Mountain Steppe-Open Woodland-Coniferous Forest-
  Alpine Meadow Province
M331A       Yellowstone Highlands Section
M331B       Bighorn Mountains Section
M331D       Overthrust Mountains Section
M331E       Uinta Mountains Section
M331F       Southern Parks and Rocky Mountain Ranges Section
M331G       South-Central Highlands Section
M331H       North-Central Highlands and Rocky Mountain Section
M331I       Northern Parks and Ranges Section
M331J       Wind River Mountain Section

Southwest Plateau and Plains Dry Steppe and Shrub Province
-315A       Pecos Valley Section
-315B       Texas High Plains Section
-315C       Rolling Plains Section
-315D       Edwards Plateau Section
-315E       Rio Grande Plain Section
-315F       Southern Gulf Prairies and Marshes Section

Upper Yukon Tayga Province
-139A        Upper Yukon Flats Section

Upper Yukon Tayga-Meadow Province
M139A        Upper Yukon Highlands Section

Yukon Intermontane Plateaus Tayga Province
-131A        Upper Kobuk Valley Section
-131B        Yukon-Kuskokwim Bottomlands Section

Yukon Intermontane Plateaus Tayga-Meadow Province
M131A        Nulato Hills Section
M131B        Kuskokwim Mountains Section
M131C        Nushagak-Lime Hills Section
Enumerated_Domain_Value_Definition_Source: USDA Forest Service
Attribute:
Attribute_Label: Mcode
Attribute_Definition:
A code used to identify mountainous ecoregions with variations due to elevation.
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -
Enumerated_Domain_Value_Definition: The ecoregion is not mountainous.
Enumerated_Domain_Value_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: M
Enumerated_Domain_Value_Definition: The ecoregion is mountainous.
Enumerated_Domain_Value_Definition_Source: USDA Forest Service
Attribute:
Attribute_Label: Pcode
Attribute_Definition: A numeric code identifying the Province.
Attribute_Definition_Source: National Atlas of the United States
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 121
Range_Domain_Maximum: 423
Attribute:
Attribute_Label: Scode
Attribute_Definition:
A code identifying the section within the Province. This is the last character of Ecocode. This field is designed for cartographic production.
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: A
Range_Domain_Maximum: N
Attribute:
Attribute_Label: Key
Attribute_Definition: The first three characters of the Section value.
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: Adi
Range_Domain_Maximum: Yuk
Attribute:
Attribute_Label: Fdigit
Attribute_Definition:
The last four digits of Ecocode. This is a cartographic production field for labeling Sections.
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 121A
Range_Domain_Maximum: 423A
Attribute:
Attribute_Label: Mtext
Attribute_Definition:
The first four digits of Ecocode. This code identifies mountainous and non-mountainous Provinces.
Attribute_Definition_Source: USDA Forest Service
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -124
Range_Domain_Maximum: M423


Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Earth Science Information Center, U.S. Geological Survey
Contact_Address:
Address_Type: Mailing address
Address: 507 National Center
City: Reston
State_or_Province: VA
Postal_Code: 20192
Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747)
Contact_Voice_Telephone: 703-648-5920
Contact_Instructions:
In addition to the address above there are other ESIC offices throughout the country. A full list of these offices is at <http://ask.usgs.gov/esic_index.html>.

Distribution_Liability:
Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made by the U.S. Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. No responsibility is assumed by the U.S. Geological Survey in the use of these data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ESRI Shapefile
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://nationalatlas.gov/atlasftp.html?openChapters=chpbio#chpbio>
Network_Resource_Name: <http://www.fs.fed.us/institute/ecoregions/eco_download.html>
Digital_Form:
Digital_Transfer_Information:
Format_Name: SDTS
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://nationalatlas.gov/atlasftp.html?openChapters=chpbio#chpbio>
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://nationalatlas.gov/atlasftp.html?openChapters=chpbio#chpbio>
Network_Resource_Name: <http://www.fs.fed.us/institute/ecoregions/eco_download.html>
Fees: There is no charge for the map layer.


Metadata_Reference_Information:
Metadata_Date: 20060417
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peg Rawson
Contact_Organization: National Atlas of the United States
Contact_Address:
Address_Type: Mailing address
Address: 12201 Sunrise Valley Drive
Address: MS-561
City: Reston
State_or_Province: VA
Postal_Code: 20192
Contact_Voice_Telephone: 703-648-4183
Contact_Electronic_Mail_Address: atlasmail@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Security_Information:
Metadata_Security_Classification_System: None
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: None



 


Generated by mp version 2.8.16 on Mon May 15 13:26:29 2006