Landscape Approach Data Portal

Data, Maps, and Models from BLM's Landscape Approach Initiatives

FeedbackAboutHelpLogin
HomeSearchBrowse BLM National Data How To
Details

BLM REA MBR 2010 2010.ILMREADBO.MBR TS C 173856 DESERT TORTOISE ConnectivityNormalized poly


Identification Information:
Citation:
Citation Information:
Originator: NatureServe
Publication Date: 20120425
Title: BLM REA MBR 2010 2010.ILMREADBO.MBR TS C 173856 DESERT TORTOISE ConnectivityNormalized poly
Geospatial Data Presentation Form: vector digital data
Publication Information:
Publication Place: Boulder, CO
Publisher: NatureServe
Online Linkage: https://landscape.blm.gov/MBR_2010_layerpackages/MBR_TS_C_173856_DESERT_TORTOISE_ConnectivityNormalized_poly.lpk
Description:
Abstract: MBR Assessment Desert Tortoise Habitat Connectivity Model - normalized and converted to a 0-100 scale. This data is a model of potential habitat connectivity for the Mojave desert tortoise (Gopherus agassizii) for the Mojave Basin and Range ecoregion. Methods for developing this data set: The connectivity modeling software Circuitscape 3.5.7 was used to develop the desert tortoise model. The two inputs needed to model tortoise habitat connectivity with this software were developed in ArcGIS 10. Habitat Input: The USGS model for desert tortoise habitat potential was used to create a series of 167 points representing tortoise habitat throughout the Mojave Basin and Range ecoregion. Areas with high habitat potential (0.7 or higher) were selected and converted to polygons. Polygons smaller than 4,000 acres were removed. Point centroids were generated for these habitat polygons, and additional points were manually added within the habitat polygons to create a more extensive distribution of tortoise habitat areas to connect. The resulting points were converted to an ascii format to be assessed for landscape-scale connectivity across the Mojave Basin and Range ecoregion in Circuitscape 3.5.7. Conductance Input: A landscape conductance surface for desert tortoise was built in ArcGIS using three inputs: 1) the USGS tortoise habitat potential model (Nussear et al. 2009), 2) the Landscape Condition Model, and 3) an index of steepness. The inverse of the steepness was calculated. The habitat potential, landscape condition model, and steepness inverse were multiplied together then multiplied by 1000 to get an initial conductance raster. Pixels meeting any of the following criteria were coded as NoData: having a habitat potential
Purpose: These data are provided by Bureau of Land Management (BLM) "as is" and may contain errors or omissions.The User assumes the entire risk associated with its use of these data and bears all responsibility in determining whether these data are fit for the User's intended use. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived, and both scale and accuracy may vary across the data set. These data may not have the accuracy, resolution, completeness, timeliness, or other characteristics appropriate for applications that potential users of the data may contemplate. The User is encouraged to carefully consider the content of the metadata file associated with these data. These data are neither legal documents nor land surveys, and must not be used as such. Official records may be referenced at most BLM offices. Please report any errors in the data to the BLM office for which it was obtained. The BLM should be cited as the data source in any products derived from these data. Any Users wishing to modify the data should describe the types of modifications they have performed. The User should not misrepresent the data, nor imply that changes made were approved or endorsed by BLM. This information may be updated without notification.
Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 20120425
Currentness Reference: publication date
Status:
Progress: Complete
Maintenance and Update Frequency: None planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -118.3957678
East Bounding Coordinate: -113.1873935
North Bounding Coordinate: 37.52093728
South Bounding Coordinate: 33.56257102
Keywords:
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Category
Theme Keyword: environment
Theme Keyword: biota
Theme:
Theme Keyword Thesaurus: BLM-Theme
Theme Keyword: Vegetation
Theme Keyword: Wildlife
Theme Keyword: Geospatial
Theme:
Theme Keyword Thesaurus: BLM-REA
Theme Keyword: MBR 2010
Theme Keyword: Mojave Basin and Range
Place:
Place Keyword Thesaurus: BLM-State
Place Keyword: Arizona
Place Keyword: California
Place Keyword: Nevada
Place Keyword: Utah
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: DOI
Theme Keyword: Bureau of Land Management
Theme Keyword: BLM
Theme Keyword: Rapid Ecoregional Assessment
Theme Keyword: REA
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Category
Theme Keyword: environment
Theme:
Theme Keyword Thesaurus: EPA GIS Keyword Thesaurus
Theme Keyword: Natural Resources
Theme Keyword: Land
Theme Keyword: Biology
Theme Keyword: Management
Theme Keyword: Ecology
Theme Keyword: Impact
Theme:
Theme Keyword Thesaurus: BLM-THEME
Theme Keyword: Lands
Theme Keyword: Wildlife
Place:
Place Keyword Thesaurus: BLM-STATE
Place Keyword: Utah
Place Keyword: California
Place Keyword: Arizona
Place Keyword: Nevada
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: NatureServe
Contact Person: Mary Harkness
Contact Position: Conservation Planner/Project Manager
Contact Address:
Address Type: mailing and physical
Address: 4001 Discovery Drive, Suite 2110
City: Boulder
State or Province: CO
Postal Code: 80303
Country: Unknown
Contact Voice Telephone: (703) 797-4803
Contact Facsimile Telephone: (720) 506-3295
Contact Electronic Mail Address: mary_harkness@natureserve.org
Contact Instructions: http://www.natureserve.org/
Native Data Set Environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.5.4400
Security Information:
Security Handling Description: None
Security Classification System: None
Access Constraints: None, these data are considered public domain
Use Constraints: These data are provided by Bureau of Land Management (BLM) "as is" and may contain errors or omissions. The User assumes the entire risk associated with its use of these data and bears all responsibility in determining whether these data are fit for the User's intended use. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived, and both scale and accuracy may vary across the data set. These data may not have the accuracy, resolution, completeness, timeliness, or other characteristics appropriate for applications that potential users of the data may contemplate. The User is encouraged to carefully consider the content of the metadata file associated with these data. These data are neither legal documents nor land surveys, and must not be used as such. Official records may be referenced at most BLM offices. Please report any errors in the data to the BLM office for which it was obtained. The BLM should be cited as the data source in any products derived from these data. Any Users wishing to modify the data should describe the types of modifications they have performed. The User should not misrepresent the data, nor imply that changes made were approved or endorsed by BLM. This information may be updated without notification.
Data Quality Information:
Logical Consistency Report: Tests for integrity have not been performed.
Completeness Report: Features represented have not been tested for completeness
Lineage:
Process Step:
Process Description: Assembled USGS tortoise habitat potential model, landscape condition model, and steepness index
Process Date: 20111101
Process Contact:
Contact Information:
Contact Person Primary:
Contact Person: Unknown
Contact Organization: Unkonwn
Contact Position: Unknown
Contact Address:
Country: Unknown
Address Type: Unknown
Address: Unknown
City: Unknown
State or Province: Unknown
Postal Code: Unknown
Contact Voice Telephone: Unknown
Process Step:
Process Description: Created conductance surface, part 2: took result of part 1 and for pixels where USGS habitat potential < 0.1 or where landscape condition < 50, converted to NoData
Process Date: 20120101
Process Step:
Process Description: Created conductance surface, part 1: took inverse of steepness; multiplied the three rasters together then multiplied by 1000
Process Date: 20120101
Process Step:
Process Description: Input the habitat and conductance surfaces into Circuitscape 3.5.7 and ran model in pairwise mode.
Process Date: 20120401
Process Step:
Process Description: Created habitat input: Selected areas with habitat potential of 0.7 and higher from USGS model, converted to polygons, removed polygons < 4000 acres, generated centroids, manually created additional points within large polygons, converted points to ascii format.
Process Date: 20120401
Process Step:
Process Description: Normalized and converted to a 0-100 scale
Process Date: 20120501
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: NatureServe
Contact Person: Jon Hak
Contact Electronic Mail Address: jon_hak@natureserve.org
Source Information:
Source Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: unknown
Source Currentness Reference: Unknown
Source Citation Abbreviation: Unknown
Source Citation:
Citation Information:
Originator: Unknown
Publication Date: Unknown
Title: Unknown
Source Scale Denominator: Unknown
Type of Source Media: Unknown
Source Contribution: Unknown
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report: Unknown
Vertical Positional Accuracy:
Vertical Positional Accuracy Report: Unknown
Attribute Value Accuracy Information:
Attribute Accuracy Report: Unknown
Spatial Data Organization Information:
Indirect Spatial Reference: MBR
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: 5031
Spatial Reference Information:
Horizontal Coordinate System Definition:
Geodetic Model:
Semi-major Axis: 6378137.0
Horizontal Datum Name: D North American 1983
Denominator of Flattening Ratio: 298.257222101
Ellipsoid Name: GRS 1980
Planar:
Map Projection:
Albers Conical Equal Area:
False Northing: 0.0
Standard Parallel: 29.5
Standard Parallel: 45.5
False Easting: 0.0
Longitude of Central Meridian: -96.0
Latitude of Projection Origin: 23.0
Map Projection Name: Albers Conical Equal Area
Planar Coordinate Information:
Coordinate Representation:
Abscissa Resolution: 0.0001
Ordinate Resolution: 0.0001
Planar Distance Units: meters
Planar Coordinate Encoding Method: coordinate pair
Entity and Attribute Information:
Detailed Description:
Entity Type:
Entity Type Label: mbr_2010.ILMREADBO.MBR_TS_C_173856_DESERT_TORTOISE_ConnectivityNormalized_poly
Entity Type Definition: Unknown
Attribute:
Attribute Label: OBJECTID_1
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: Shape
Attribute Definition: Feature geometry.
Attribute Definition Source: ESRI
Attribute Domain Values:
Unrepresentable Domain: Coordinates defining the features.
Attribute:
Attribute Label: OBJECTID
Attribute:
Attribute Label: Id
Attribute:
Attribute Label: Shape_Leng
Attribute:
Attribute Label: AnalysisID
Attribute:
Attribute Label: HA
Attribute:
Attribute Label: random1
Attribute:
Attribute Label: randomf
Attribute:
Attribute Label: CBR
Attribute:
Attribute Label: MBR
Attribute:
Attribute Label: KM2
Attribute:
Attribute Label: OBJECTID_12
Attribute:
Attribute Label: GEODB_SDE1
Attribute:
Attribute Label: FREQUENCY
Attribute:
Attribute Label: SUM_COUNT
Attribute:
Attribute Label: SUM_RAW_CNT
Attribute:
Attribute Label: Connect_wt
Attribute:
Attribute Label: Element
Attribute:
Attribute Label: Connect_Q
Attribute:
Attribute Label: Shape.area
Attribute:
Attribute Label: Shape.len
Overview Description:
Entity and Attribute Overview: Unknown
Distribution Information:
Standard Order Process:
Digital Form:
Digital Transfer Option:
Online Option:
Access Instructions: Download from Landscape Approach Data Portal
Computer Contact Information:
Network Address:
Network Resource Name: https://landscape.blm.gov/MBR_2010_layerpackages/MBR_TS_C_173856_DESERT_TORTOISE_ConnectivityNormalized_poly.lpk
Digital Transfer Information:
Format Specification: Varies
File Decompression Technique: No compression applied
Format Name: ESRI Layer Package (LPK)
Fees: N/A
Ordering Instructions: Download from Landscape Approach Data Portal
Distribution Liability: The BLM assumes no responsibility for errors or omissions. No warranty is made by the BLM as to the accuracy, reliability, or completeness of these data for individual use or aggregate use with other data; nor shall the act of distribution to contractors, partners, or beyond, constitute any such warranty for individual or aggregate data use with other data. Although these data have been processed successfully on computers of BLM, no warranty, expressed or implied, is made by BLM regarding the use of these data on any other system, or for general or scientific purposes, nor does the fact of distribution constitute or imply any such warranty. In no event shall the BLM have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of the use or reliance on the geographic data or arising out of the delivery, installation, operation, or support by BLM.
Resource Description: Downloadable Data
Technical Prerequisites: ESRI ArcGIS software, version 10.0 or greater
Available Time Period:
Time Period Information:
Single Date/Time:
Calendar Date: 2013
Distributor:
Contact Information:
Contact Address:
Postal Code: 80225-0047
Address: Building 50, Denver Federal Center
Address: P.O. Box 25047
City: Denver
Address Type: mailing and physical address
State or Province: Colorado
Country: USA
Contact Electronic Mail Address: blm_oc_rea_data_portal_feedback_team@blm.gov
Contact Voice Telephone: Please email
Contact Position: Resource Programs Data Coordinator, OC-530
Contact Organization Primary:
Contact Organization: Bureau of Land Management
Metadata Reference Information:
Metadata Date: 20160803
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: NatureServe
Contact Person: Mary Harkness
Contact Position: Conservation Planner/Project Manager
Contact Address:
Address Type: mailing and physical
Address: 4001 Discovery Drive, Suite 2110
City: Boulder
State or Province: CO
Postal Code: 80303
Country: Unknown
Contact Voice Telephone: (703) 797-4803
Contact Facsimile Telephone: (720) 506-3295
Contact Electronic Mail Address: mary_harkness@natureserve.org
Contact Instructions: http://www.natureserve.org/
Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time
Metadata Review Date: 20131220
/geoportal/rest/document?f=html&id=%7B917A3520-58BC-4D13-92D9-AF0B1B4DAD86%7D
This portal was built using Geoportal Server as part of the broader BLM ArcGIS for Server program. Please read the pages describing our Disclaimer and Privacy or Contact Us.