Identification_Information: Citation: Citation_Information: Originator: US Geological Survey Publication_Date: November 2003 Title: Spatial complexity in tall sagebrush in the western United States Geospatial_Data_Presentation_Form: raster digital data Online_Linkage: http://sagemap.wr.usgs.gov/ftp/projects/issues_paper/sage_complexity.zip Description: Abstract: Small-scale patterns of spatial fragmentation in tall sagebrush in the western United States. Purpose: To describe small-scale patterns of spatial complexity in tall sagebrush distributions in the western United States. Supplemental_Information: References: Baker, W. and Y. Cai. 1992. The r.le programs for multiscale analysis of landscape structure using the GRASS geographical information system. Landscape Ecology 7:291-302. Comer, P., J. Kagan, M. Heiner, and C. Tobalske. 2002. SAGEMAP: a GIS database for Sage Grouse and shrubsteppe management in the intermountain West. USA-CERL. 1993. GRASS 4.1 Reference Manual. United States Army Corps of Engineers Construction Engineering Research Laborary, Champaign, IL. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: unknown Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -125.884113 East_Bounding_Coordinate: -99.687932 North_Bounding_Coordinate: 49.445494 South_Bounding_Coordinate: 33.064293 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: sagebrush fragmentation Access_Constraints: None Use_Constraints: No warranty is made by the US Geological Survey as to the accuracy, reliability or completeness of these data for individual use or aggregate use with other data, or for purposes not intended by the USGS. Spatial information may not meet National Map Accuracy Standards. This information may be updated without notification. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Steve Knick Contact_Organization: US Geological Survey Contact_Position: Research Ecologist Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800 Cross_Reference: Citation_Information: Originator: US Geological Survey Publication_Date: 2003 Title: Large-scale patterns of tall sagebrush distribution in the western United States Geospatial_Data_Presentation_Form: raster digital data Online_Linkage: htttp://sagemap.wr.usgs.gov/ftp/projects/issues_paper/sage_complexity.zip Data_Quality_Information: Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Natureserve Publication_Date: February 2002 Title: Sagestitch Other_Citation_Details: Point_of_Contact: Contact_Person: Patrick Comer Contact_Organization: NatureServe Contact_Position: Senior Ecologist Contact_ Address: 2060 Broadway Suite 230 City: Boulder State_or_Province: CO Postal_Code: 80302 Country: USA Contact_Voice_Telephone: 303-541-0352 Contact_Facsimile_Telephone: 303-449-4328 Contact_Electronic_Mail_Address: pat_comer@natureserve.org Online_Linkage: http://sagemap.wr.usgs.gov/ftp/regional/TNC/sagestitch_meta.txt Process_Step: Process_Description: Reclassed categories into tall sagebrush to include: Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis), Basin big sagebrush (A. t. ssp. tridentata), mountain big sagebrush (A. t. ssp. vaseyana), and silver sagebrush (A. cana). Process_Step: Process_Description: Resampled the map from 90-m to 500-m pixels. Process_Step: Process_Description: An intermediate layer of total edges between sagebrush habitat cells and other habitats was developed for a 2.5-km moving window analysis for total edge using the r.le program (r.le.pixel edg=e1; Baker and Cai 1992) in the GRASS GIS (USA-CERL 1993). Process_Step: Process_Description: A map of small-scale patterns of spatial fragmentation then was derived by dividing the GIS layer of total edge within a 2.5-km radius with the layer for large-scale patterns of tall sagebrush distribution in the western United States. This map then represented the perimeter/area ratio of sagebrush edge to percent patch cover. Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 3490 Column_Count: 3894 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Albers Conical Equal Area Albers_Conical_Equal_Area: Standard_Parallel: 38.000000 Standard_Parallel: 41.000000 Longitude_of_Central_Meridian: -114.000000 Latitude_of_Projection_Origin: 34.000000 False_Easting: 0.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 500.000000 Ordinate_Resolution: 500.000000 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.400000 Denominator_of_Flattening_Ratio: 294.978698 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: sagecmplx Attribute: Attribute_Label: ObjectID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Value Attribute_Definition: The ratio between the total habitat edge within a 2.5 km radius to the total landcover dominated by sagebrush. High numbers represents areas containing a large amount of habitat edge relative to sagebrush area and low numbers have a large amount of sagebrush habitat relative to edge. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 86 Attribute: Attribute_Label: Count Distribution_Information: Resource_Description: Downloadable Data Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Transfer_Size: 1.849 Metadata_Reference_Information: Metadata_Date: 20031106 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: US Geological Survey Contact_Person: Steve Knick Contact_Position: Research Ecologist Contact_Address: Address_Type: mailing and physical address Address: 970 Lusk St. City: Boise State_or_Province: Idaho Postal_Code: 83706 Contact_Voice_Telephone: (208) 426-5208 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