Ecoregions of Alaska and Neighboring Territory
Table of Contents
IDENTIFICATION_INFORMATION
Citation:
Citation_Information:
Originator: Greg Nowacki
Originator: Page Spencer
Originator: Terry Brock
Originator: Michael Fleming
Originator: Torre Jorgenson
Publication_Date: 2001
Title: Ecoregions of Alaska and Neighboring Territory
Edition:
Geospatial_Data_Presentation_Form: Map
Publication_Information:
Publication_Place: Reston, Va
Publisher: USGS
Other_Citation_Details:
Online_Linkage: HTTP://agdc.usgs.gov/data/projects/fhm/
Larger_Work_Citation:
Citation_Information:
Originator:
Publication_Date:
Title:
Publication_Information:
Publication_Place:
Publisher:
Online_Linkage:
Description:
Abstract:
Major ecosystems have been mapped and described for the
State of Alaska and nearby areas. Ecoregion units are based
on newly available datasets and field experience of
ecologists, biologists, geologists and regional experts.
Recently derived datasets for Alaska included climate
parameters, vegetation, surficial geology and topography.
Additional datasets incorporated in the mapping process
were lithology, soils, permafrost, hydrography, fire regime
and glaciation. Thirty two units are mapped using a
combination of the approaches of Bailey (hierarchial), and
Omernick (integrated). The ecoregions are grouped into two
higher levels using a "tri-archy" based on climate
parameters, vegetation response and disturbance processes.
The ecoregions are described with text, photos and tables
on the published map.
Purpose:
This ecoregions map has been created to incorporate recent
datasets and an interagency approach to mapping and
managing Alaska's lands and resources. It combines the
expertise and approach incorporated in ecosystem mapping
efforts in the early 1990's (Gallant et al, 1995, Nowacki
and Brock, 1995). It provides an ecological foundation for
studying, managing and understanding the ecosystems of
Alaska and their driving processes.
Supplemental_Information:
The Ecoregion units are arranged in two higher levels along
gradients of climate, vegetation and disturbance processes.
Thirty two ecoregions fit into eight groups at Level 2, and
three regimes at Level 1 (Boreal, Maritime and Polar).
Please refer to the tri-archy found on the back of the
published map. Written descriptions are located in the
section of Overview Description, following the individual
ecoregional descriptions.
Level 1 Level 2 Ecoregion
Polar (-like)
Arctic Tundra
Beaufort Coastal Plain
Brooks Foothills
Brooks Range
Bering Tundra
Kotzebue Sound Lowlands
Seward Peninsula
Bering Sea Islands
Boreal (-like)
Bering Taiga
Nulato Hills
Yukon-Kuskokwim Delta
Ahklun Mountains
Bristol Bay Lowlands
Intermontane Boreal
Kobuk Ridges and Valleys
Ray Mountains
Davidson Mountains
Yukon-Old Crow Basin
North Ogilvie Mountains
Yukon-Tanana Uplands
Tanana-Kuskokwim Lowlands
Yukon River Lowlands
Kuskokwim Mountains
Alaska Range Transition
Lime Hills
Alaska Range
Cook Inlet Basin
Copper River Basin
Maritime (-like)
Aleutian Meadows
Alaska Peninsula
Aleutian Islands
Coastal Rainforests
Alexander Archipelago
Boundary Ranges
Chugach-St. Elias Mountains
Gulf of Alaska Coast
Kodiak Island
Coast Mountains Transition
Wrangell Mountains
Kluane Range
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date:
Ending_Date:
Currentness_Reference:
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 166.5500
East_Bounding_Coordinate: -127.8092
North_Bounding_Coordinate: 71.3910
South_Bounding_Coordinate: 48.1320
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Ecoregions
Theme_Keyword: Alaska
Theme_Keyword: Ecosystems
Theme_Keyword: Ahklun Mountains
Theme_Keyword: Alaska Peninsula
Theme_Keyword: Alaska Range
Theme_Keyword: Aleutian Islands
Theme_Keyword: Alexander Archipelago
Theme_Keyword: Beaufort Coastal Plain
Theme_Keyword: Bering Sea Islands
Theme_Keyword: Boundary Ranges
Theme_Keyword: Bristol Bay Lowlands
Theme_Keyword: Brooks Foothills
Theme_Keyword: Brooks Range
Theme_Keyword: Chugach-St. Elias Mountains
Theme_Keyword: Cook Inlet Basin
Theme_Keyword: Copper River Basin
Theme_Keyword: Davidson Mountains
Theme_Keyword: Gulf of Alaska Coast
Theme_Keyword: Kluane Range
Theme_Keyword: Kobuk Ridges and Valleys
Theme_Keyword: Kodiak Island
Theme_Keyword: Kotzebue Sound Lowlands
Theme_Keyword: Kuskokwim Mountains
Theme_Keyword: Lime Hills
Theme_Keyword: North Ogilvie Mountains
Theme_Keyword: Nulato Hills
Theme_Keyword: Ray Mountains
Theme_Keyword: Seward Peninsula
Theme_Keyword: Tanana-Kuskokwim Lowlands
Theme_Keyword: Wrangell Mountains
Theme_Keyword: Yukon River Lowlands
Theme_Keyword: Yukon-Kuskokwim Delta
Theme_Keyword: Yukon-Old Crow Basin
Theme_Keyword: Yukon-Tanana Uplands
Place:
Place_Keyword_Thesaurus: None
Access_Constraints:
Use_Constraints:
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Contact_Person: Greg Nowacki or Page Spencer
Contact_Position: Ecologist
Contact_Address:
Address_Type: mailing and physical address
Address:
City:
State_or_Province:
Postal_Code:
Country:
Contact_Voice_Telephone: 907-586-7920 or 907-257-2625
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: gnowacki@fs.fed.us or page_spencer@nps.gov
Hours_of_Service:
Native_Data_Set_Environment:
ArcView version 3.2 shapefile format
e:\akrestrends\commonecoregions\ecoreg52alb\akecoregions.shp
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DATA_QUALITY_INFORMATION
Attribute_Accuracy:
Attribute_Accuracy_Report:
Logical_Consistency_Report:
Completeness_Report:
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Greg Nowacki
Originator: Page Spencer
Originator: Terry Brock
Originator: Michael Fleming
Originator: Torre Jorgenson
Publication_Date: 2001
Title: Ecoregions of Alaska and Neighboring Territory
Edition:
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Reston, Va
Publisher: U S Geological Survey
Other_Citation_Details:
Online_Linkage: HTTP://agdc.usgs.gov/data/projects/fhm/
Larger_Work_Citation:
Citation_Information:
Originator:
Publication_Date:
Title:
Publication_Information:
Publication_Place:
Publisher:
Online_Linkage:
Source_Scale_Denominator: 2,500,000
Type_of_Source_Media:
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date:
Ending_Date:
Source_Currentness_Reference:
Source_Citation_Abbreviation:
Source_Contribution:
Process_Step:
Process_Description:
Source_Used_Citation_Abbreviation:
Process_Date:
Source_Produced_Citation_Abbreviation:
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Organization:
Contact_Person:
Contact_Position:
Contact_Address:
Address_Type: mailing and physical address
Address:
City:
State_or_Province:
Postal_Code:
Country:
Contact_Voice_Telephone:
Contact_Facsimile_Telephone:
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Hours_of_Service:
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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: 32
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SPATIAL_REFERENCE_INFORMATION
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 55.000000
Standard_Parallel: 65.000000
Longitude_of_Central_Meridian: -154.000000
Latitude_of_Projection_Origin: 50.000000
False_Easting: 0.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate pair
Coordinate_Representation:
Abscissa_Resolution:
Ordinate_Resolution:
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Sphere
Semi-major_Axis: 6370997.0000000
Denominator_of_Flattening_Ratio: Infinity
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ENTITY_AND_ATTRIBUTE_INFORMATION
Detailed_Description:
Entity_Type:
Entity_Type_Label: akecoregions.dbf
Entity_Type_Definition: Shapefile Attribute Table
Entity_Type_Definition_Source: None
Attribute:
Attribute_Label: Area
Attribute_Definition: Area of polygon
Attribute_Definition_Source: Software generated
Attribute_Domain_Values:
Unrepresentable_Domain:
Software computed
Attribute:
Attribute_Label: Perimeter
Attribute_Definition: Perimeter of polygon
Attribute_Definition_Source: Software generated
Attribute_Domain_Values:
Unrepresentable_Domain:
Software computed
Attribute:
Attribute_Label: Commoner
Attribute_Definition: Full Ecoregion name
Attribute_Definition_Source: Author-defined
Attribute_Domain_Values:
Unrepresentable_Domain: Character Field
Attribute:
Attribute_Label: Count
Attribute_Definition: Number of units in each ecoregion
Attribute_Definition_Source: computed
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 254
Attribute:
Attribute_Label: Level_1
Attribute_Definition: Full name of Level 1 regime
Attribute_Definition_Source: author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Character Field
Attribute:
Attribute_Label: Level_2
Attribute_Definition: Full name of Level 2 ecological group
Attribute_Definition_Source: author defined
Attribute_Domain_Values:
Unrepresentable_Domain: Character Field
Attribute:
Attribute_Label: Acres
Attribute_Definition: Area of each ecoregion
Attribute_Definition_Source: calculated
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2.34755e+006
Range_Domain_Maximum: 3.85908e+007
Attribute:
Attribute_Label: Perim_mile
Attribute_Definition: Perimeter length (miles) for each ecoregion
Attribute_Definition_Source: calculated
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 294.548
Range_Domain_Maximum: 11462.1
Overview_Description:
Entity_and_Attribute_Overview:
Entity_and_Attribute_Detail_Citation:
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DISTRIBUTION_INFORMATION
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: US Geological Survey
Contact_Person: please use electronic mail to contact webmaster
Contact_Position:
Contact_Address:
Address_Type: mailing and physical address
Address:
City:
State_or_Province:
Postal_Code:
Country:
Contact_Voice_Telephone: please use electronic mail
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: webmaster@www-eros-afo.wr.usgs.gov
Hours_of_Service:
Resource_Description:
Ecoregions of Alaska and Neighboring Territory
Distribution_Liability:
Although these data have been processed successfully on a
computer system at the U.S. Geological Survey, U.S. Dept of
the Interior, no warranty expressed or implied is made by
the Geological Survey or any of the authors regarding the
utility of the data on any other system, nor shall the act
of distribution constitute any such warranty.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name:ARCE
Digital_Transfer_Option:
Offline_Option:
Offline_Media:
Recording_Format:
Compatibility_Information:
Fees: none
Ordering_Instructions:
download files from AGDC website
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METADATA_REFERENCE_INFORMATION
Metadata_Date: November, 2000
Metadata_Review_Date:
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: National Park Service
Contact_Person: Page Spencer
Contact_Position: Ecologist
Contact_Address:
Address_Type: Mailing and physical address
Address: please use electronic mail
City:
State_or_Province:
Postal_Code:
Country:
Contact_Voice_Telephone:
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: Page_Spencer@nps.gov
Hours_of_Service:
Metadata_Standard_Name: FGDC CSDGM
Metadata_Standard_Version: FGDC-STD-001-1998
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