Range Survey of the Seward Peninsula Reindeer Ranges, Alaska - Generalized Version

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Swanson, David J.

Originator: Schuman, Michelle

Originator: Scorup, Peter C.

Publication_Date: 19850701

Title:

Range Survey of the Seward Peninsula Reindeer Ranges, Alaska - Generalized Version

Geospatial_Data_Presentation_Form: Map

Publication_Information:

Publication_Place: Anchorage, Ak.

Publisher: United States Department of Agriculture, NRCS

Description:

Abstract:

In 1976, the Northwest Alaska Native Association (NANA) and the Reindeer Herders Association (RHA) asked the Alaska Soil & Water Conservation District and the United States Department of Agriculture, Soil Conservation Service (SCS) for assistance in developing and applying range management plans for reindeer. In response, the SCS designed and initiated a 15 million acre survey of 19 reindeer grazing permit areas on the Seward Peninsula, Alaska.

Landsat data was used to classify and map ecological sites in the northeastern areas of the Seward and Baldwin Peninsulas. Starting in 1979, photo-interpretation of high altitude infrared color photography was used and continued to be used for classifying ecological sites during the 1981, 1982, and 1983 survey seasons. The 1976 area was re-mapped using color infra-red aerial photography in 1983.

Purpose:

This survey was conducted to provide information useful for land resource management, with special emphasis on reindeer range planning and management. Survey objectives were to 1). identify, map and describe "ecological sites", 2). describe plant community characteristics of each ecological site.; 3). quantify plant communities in terms of species composition and annual productivity. and 4). collect other information for resource planning on Seward Peninsula Rangelands.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1976

Ending_Date: 1984

Currentness_Reference: complete

Status:

Progress: Complete

Maintenance_and_Update_Frequency: none planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -168.6000

East_Bounding_Coordinate: -158.9966

North_Bounding_Coordinate: 67.0732

South_Bounding_Coordinate: 63.6126

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Range Sites

Theme_Keyword: Vegetation

Theme_Keyword: Ecosystems

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Alaska

Place_Keyword: Seward Peninsula

Place_Keyword: Nome

Place_Keyword: Kotzebue

Place_Keyword: Teller

Access_Constraints: none

Use_Constraints:

Data should not be interpreted at a resolution greater than the original mapping scale.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USDA/NRCS

Contact_Person: Ted Cox

Contact_Position: GIS Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 351 W. Parks Hwy.

City: Wasilla

State_or_Province: AK

Postal_Code: 99654

Country: USA

Contact_Voice_Telephone: 907-373-6493

Contact_Facsimile_Telephone: 907-373-7192

Contact_Electronic_Mail_Address: ted.cox@ak.usda.gov

Hours_of_Service: 8am - 5pm

Native_Data_Set_Environment: Arc/Info coverages

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The original source for the map was color-infrared photography. Errors in transferring this linework to a topographic basemap may have occurred. The user needs to be aware that the map is a generalized depiction of the original range site maps included in the published document The generalized map regroups the 169 field units into 9 major strata. These are named in the poly attribute table for the coverage. 1:Trees; 2:Low & High Shrub; 3:Low Shrub/Herbaceous; 4:Herbaceous 5:Herbaceous (Mat); 6: Mat & Cushion; 7: Barren; 8: Burned; 9:Water.

Logical_Consistency_Report: -

Completeness_Report: -

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Maps were compiled to 1:250,000 scale topographic maps that had been enlarged to 1:125000 scale. They may be accurate to about one hundred meters. Users should consult the original source document (the CIR photography) if there are questions about the accuracy of the mapping.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report: Not applicable

Lineage:

Process_Step:

Process_Description:

Field Mapping was conducted from 1978-1984. Map types were originally photo-interpreted from 1:60,000 scale CIR photography dated 1978, & 1979. Field sheets were manually recompiled to an 1:250,000 scale topographic base map photographically enlarged to a 1:125,000 scale. Sixty-two 11x17 inch scribed sheets were prepared for the final publication. Photocopies of these scribed sheets were scanned in early 1992. Tics were transferred from a computer generated grid to the map sheets prior to initiating scanning to ensure accurate registration and joins between sheets. The majority of the sheets were scanned with a Houston Instrument scanner at a resolution of 250 dpi. At the 1:125,000 scale this equates to roughly 60 feet on the ground per pixel.

Scans were processed using the LTPlus digitizing and vectorization software. Some minor adjustments to the original linework occurred during the vectorization and join process. Labeling and linework errors found in the published maps were corrected during the edits after first consulting the original field photography. Lakes and water bodies were processed as a separate map layer and thus are not included with the vegetation layer. Map sheets were electronically joined and double attributed in LTplus to catch labeling errors. Check plots were also used to compare digitized linework against the original source.

Once all sheets were digitized, field mapping attributes were replaced with a sequential grass category code and imported to GRASS. Individual map sheets were then joined to form a seamless coverage for the entire Seward Peninsula. In order to simplify future use of the maps, nearly 60 map types were combined with similar units. Combined map types were all complexes of minor extent or infrequent occurrence (2 polygons or less).

Process_Date: 1992

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Organization: USDA/NRCS

Contact_Person: Ted Cox

Contact_Position: GIS Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 351 W. Parks Hwy

City: Wasilla

State_or_Province: AK

Postal_Code: 99654

Country: USA

Contact_Voice_Telephone: (907) 373-6593

Contact_Facsimile_Telephone: (907) 373-7192

Contact_Electronic_Mail_Address: ted.cox@ak.usda.gov

Hours_of_Service: 8am - 5pm

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: 6634

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Albers Conical Equal Area

Albers_Conical_Equal_Area:

Longitude_of_Central_Meridian: -154

Latitude_of_Projection_Origin: 50.000

Standard_Parallel: 55

False_Easting: 0.00000

False_Northing: 0.00000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: Coordinate pair

Coordinate_Representation:

Abscissa_Resolution: .61

Ordinate_Resolution: .61

Planar_Distance_Units: METERS

Geodetic_Model:

Horizontal_Datum_Name: North American Datum 1927

Ellipsoid_Name: CLARKE1866

Semi-major_Axis: 6378206.4

Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: veg_gen.pat

Entity_Type_Definition: Polygon Attribute Table

Entity_Type_Definition_Source: None

Attribute:

Attribute_Label: Name

Attribute_Definition: Name of the generalize vegetation type

Attribute_Definition_Source: User Defined

Attribute_Domain_Values:

Unrepresentable_Domain: Character field

Attribute:

Attribute_Label: Acres

Attribute_Definition: Acres for each polygon

Attribute_Definition_Source: User Defined

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 691977

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USDA/NRCS

Contact_Person: Ted Cox

Contact_Position: GIS Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 351 W. Parks Hwy

City: Wasilla

State_or_Province: AK

Postal_Code: 99654

Country: USA

Contact_Voice_Telephone: 907-373-6493

Contact_Facsimile_Telephone: 907-373-7192

Contact_Electronic_Mail_Address: ted.cox@ak.usda.gov

Hours_of_Service: 8am - 5 pm

Resource_Description: Vegetation Maps

Distribution_Liability: Contact NRCS for original data

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Arc/Info coverages

Digital_Transfer_Option:

Offline_Option:

Offline_Media: CDROM

Recording_Format: ISO 9660

Fees: none

Metadata_Reference_Information:

Metadata_Date: 19990222

Metadata_Review_Date: 19990201

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USDA/NRCS

Contact_Person: Ted Cox

Contact_Position: GIS Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 351 W. Parks Hwy.

City: Wasilla

State_or_Province: Alaska

Postal_Code: 99654

Country: USA

Contact_Voice_Telephone: 907-373-6493

Contact_Facsimile_Telephone: 907-373-7192

Contact_Electronic_Mail_Address: ted.cox@ak.usda.gov

Hours_of_Service: 8am-5pm

Metadata_Standard_Name: FGCD CSDGMM

Metadata_Standard_Version: FGDC-STD-001-1998

Generated by mp version 2.3.6 on Mon Feb 22 16:51:24 1999

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