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BLM REA NOS 2012 Annual Kernel Density of Central Arctic Herd from 2004 to 2014


Identification Information:
Citation:
Citation Information:
Online Linkage: https://landscape.blm.gov/NOS_2012_layerpackages/NOS_TS_C_180701_Caribou_CentralAnnualDensity.lpk
Originator: Miles Spathelf, Alaska Department of Fish and Game
Publication Date: 20150301
Title: BLM REA NOS 2012 Annual Kernel Density of Central Arctic Herd from 2004 to 2014
Description:
Abstract: Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This dataset was developed for the BLM Rapid Ecoregional Assessment for the North Slope and represents the current (2014) distribution for the Terrestrial Fine-Filter Conservation Element caribou: Central Arctic Herd. The Alaska Department of Fish and Game (ADFG) maintain radio collar and satellite telemetry data for the Western Arctic, Teshekpuk, and Central Arctic herds. ADFG summarized the telemetry data as kernel densities to delineate the total annual distributions of the three caribou herds. Collar location data points were extracted from the entire annual cycle from 2004 to 2013 for the Teshekpuk Herd and 2004 to 2014 for the Western Arctic and Central Arctic herds. For each day, the location point closest to noon was selected, with no more than one location every six days per individual. The resulting set of points served as the input for kernel density calculations. Kernel density was calculated for individual years and the results were summed to capture annual variability in caribou habitat use. Through a data sharing agreement between ADFG and AKNHP, these kernel densities were available for the North Slope REA. Kernel densities are based on the daily positions of a small subset of individuals from the total herd. For example, no more than 0.03% of the Western Arctic Herd has been collared. No kernel density or radio/satellite-collar data was available for the Porcupine Herd because of shared management with Canada. The 1983 to 2001 annual range of the herd reported in Griffith et al. (2002) was digitized for this assessment.
Purpose: This dataset was developed for the BLM Rapid Ecoregional Assessment for the North Slope and represents the total annual range of the Central Arctic caribou herd for the North Slope. Annual habitat importance is represented by kernels.
Supplemental Information: The range for the Central Arctic caribou herd was acquired from the Alaska Department of Fish and Game. Kernel densities use Least-Squares Cross-Validation bandwidth estimator.
Status:
Progress: Complete
Maintenance and Update Frequency: None planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -169.207183
East Bounding Coordinate: -131.111237
North Bounding Coordinate: 71.405766
South Bounding Coordinate: 63.438126
Keywords:
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Category
Theme Keyword: biota
Theme:
Theme Keyword Thesaurus: BLM-THEME
Theme Keyword: Geospatial
Theme Keyword: Wildlife
Theme:
Theme Keyword Thesaurus: BLM-REA
Theme Keyword: NOS 2012
Theme Keyword: North Slope
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
Place:
Place Keyword Thesaurus: BLM-STATE
Place Keyword: Alaska
Theme:
Theme Keyword Thesaurus: BLM-THEME
Theme Keyword: wildlife
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Category
Theme Keyword: biota
Place:
Place Keyword Thesaurus: BLM-STATE
Place Keyword: Alaska
Point of Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alaska Department of Fish and Game
Contact Person: Miles Spathelf
Contact Position: Habitat Biologist III
Contact Address:
Address Type: mailing and physical
Address: 333 Raspberry Road
City: Anchorage
State or Province: AK
Postal Code: 99518
Country: US
Contact Voice Telephone: 907-267-2463
Contact TDD/TTY Telephone: None
Contact Facsimile Telephone: 907-267-2464
Contact Electronic Mail Address: miles.spathelf@alaska.gov
Hours: Monday through Friday, 0900 to 1700 Alaska Time
Contact Instructions: http://www.adfg.alaska.gov/
Native Data Set Environment: Microsoft Windows 7 ESRI ArcGIS 10.2.2
Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: Unknown
Currentness Reference: Unknown
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:
Attribute Value Accuracy Information:
Attribute Accuracy Report: The output from the kernel density analysis is an estimation of importance of annual habitat. Neither the range depicted nor the importance of habitat are exact.
Logical Consistency Report: Peer review of datasets and resulting analyses were conducted amongst Alaska Fish and Game Biologists. Basic checks were performed to ensure integrity and consistency.
Completeness Report: Collared caribou locations are continuously updated. The kernel density analysis used the most complete dataset as of November 2014.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report: Data were collected using methods that are accurate to within 6-100 meters. The largest kernel shows 95% of the total caribou distribution.
Positional Accuracy:
Vertical Positional Accuracy:
Vertical Positional Accuracy Report: This dataset does not include a vertical component.
Lineage:
Source Information:
Source Citation:
Citation Information:
Originator: Alaska Department of Fish and Game
Publication Date: 2014
Title: Caribou collar locations
Source Scale Denominator: 0
Type of Source Media: original data
Source Citation Abbreviation: N/A
Source Contribution: The Alaska Department of Fish and Game (ADFG) maintain radio collar and satellite telemetry data for the Western Arctic, Teshekpuk, and Central Arctic herds. Collar location data points were extracted from the entire annual cycle from 2004 to 2013 for the Teshekpuk Herd and 2004 to 2014 for the Western Arctic and Central Arctic herds. For each day, the location point closest to noon was selected, with no more than one location every six days per individual. The resulting set of points served as the input for kernel density calculations.
Process Step:
Process Date: 20141006
Process Description: For the Central Arctic Herd (CAH) PTT locations, we selected the best location per duty cycle by choosing the best Argos quality score, if there was a tie, we went with the lowest Keating score. The best GPS location per day was simply the location closest to noon since all screened locations were accurate. The best location per duty cycle is appropriate for PTT, and the best location per day is appropriate for GPS collars.
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alaska Department of Fish and Game
Contact Person: Miles Spathelf
Contact Position: Habitat Biologist III
Contact Address:
Address Type: mailing
Address: 333 Raspberry Road
City: Anchorage
State or Province: AK
Postal Code: 99518
Country: US
Contact Voice Telephone: (907) 267-2463
Contact TDD/TTY Telephone: None
Contact Electronic Mail Address: miles.spathelf@alaska.gov
Hours: Monday through Friday, 0900 to 1700 Alaska Time
Contact Instructions: http://www.adfg.alaska.gov
Process Step:
Process Date: 20141006
Process Description: Western Arctic Herd (WAH) location data 2004-2013. Includes bulls and cows. For each caribou, no more than 1 location every 6 days (could be less depending on collar type, temporal gaps in satellite collar coverage, etc.) Invalid locations and multiple locations from mortality sites excluded. Types of telemetry data:Vhf with lat/lon recorded (these records have no time stamp so will not be useful for Brownian bridge analyses); PTT with lqi of 1-3 only; GPS.
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alaska Department of Fish and Game
Contact Person: Miles Spathelf
Contact Position: Habitat Biologist III
Contact Address:
Address Type: mailing
Address: 333 Raspberry Road
City: Anchorage
State or Province: AK
Postal Code: 99518
Country: US
Contact Voice Telephone: (907) 267-2463
Contact TDD/TTY Telephone: None
Contact Electronic Mail Address: miles.spathelf@alaska.gov
Hours: Monday through Friday, 0900 to 1700 Alaska Time
Contact Instructions: http://www.adfg.alaska.gov
Process Step:
Process Date: 20141006
Process Description: For the Teshekpuk Caribou Herd (TCH) locations were screened to remove locations prior to collar deployment or after collar removal, duplicates, and after mortalities occurred. Suspected erroneous points were removed based on a conservative (i.e. screened out few points) distance-rate-angle filter similar to Douglas (2006). Any three locations with an intervening angle of 20 degrees and both “legs” with speeds in excess of 7.01*t-0.389 , where t is the time interval between locations in hours, were assumed to be inaccurate and were removed. A hand filter is also performed, where locations that are obviously incorrect (i.e. well out to sea during ice-free periods, etc). For GPS collars, locations were ranked with respect to their precision, and the best quality location closest to noon (UTC) is retained for “one-per-day” files, while PTT-only collars retain the location with the highest NQ score; in the case of ties, the location with the lowest Keating Score is retained.
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alaska Department of Fish and Game
Contact Person: Miles Spathelf
Contact Position: Habitat Biologist III
Contact Address:
Address Type: mailing
Address: 333 Raspberry Road
City: Anchorage
State or Province: AK
Postal Code: 99518
Country: US
Contact Voice Telephone: (907) 267-2463
Contact TDD/TTY Telephone: None
Contact Electronic Mail Address: miles.spathelf@alaska.gov
Hours: Monday through Friday, 0900 to 1700 Alaska Time
Contact Instructions: http://www.adfg.alaska.gov
Process Step:
Process Date: 20141008
Process Description: Data was parsed into annual data sets and individual kernel analyses (in GME 0.7.3.0, Hawthorne L. Beyer 2014, with a Least Squares Cross Validation Bandwidth optimization) were run on each data set. The resulting outputs were rescaled to, ideally, attempt to maintain annual variability and prevent more years with more collared caribou from masking years with fewer collared caribou. These rescaled datasets were summed together to create the utilization distributions. These represent the current (2015) range maps for the Central Arctic Herd and the Teshekpuk Caribou Herd. For the WAH individual line density analyses for each annual data set (in ArcMap 10.2, Esri 2014) with a search radius of 25km. The resulting output were rescaled and summed together. The WAH analyses from the kernel density estimation and line density estimation were both rescaled so that each dataset would have an equal weight on the resulting combination and summed together. This is the current (2015) range map for the Western Arctic Herd per Jim Dau.
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alaska Department of Fish and Game
Contact Person: Miles Spathelf
Contact Position: Habitat Biologist III
Contact Address:
Address Type: mailing
Address: 333 Raspberry Road
City: Anchorage
State or Province: AK
Postal Code: 99518
Contact Voice Telephone: (907) 267-2463
Contact TDD/TTY Telephone: None
Contact Electronic Mail Address: miles.spathelf@alaska.gov
Hours: Monday through Friday, 0900 to 1700 Alaska Time
Contact Instructions: http://www.adfg.alaska.gov
Spatial Data Organization Information:
Indirect Spatial Reference: North Slope
Direct Spatial Reference Method: raster
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: 55.0
Standard Parallel: 65.0
False Easting: 0.0
Longitude of Central Meridian: -154.0
Latitude of Projection Origin: 50.0
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 Definition: raster
Entity Type Definition Source: ESRI
Entity Type Label: NOS_TS_C_180701_Caribou_CentralAnnualDensity.img
Attribute:
Attribute Label: OID
Attribute Definition: Auto-assigned numbering system.
Attribute Definition Source: ESRI
Attribute:
Attribute Label: Value
Attribute Definition: Defines the kernel density value in percent.
Attribute Definition Source: Miles Spathelf
Attribute:
Attribute Label: Count
Attribute Definition: Number of grid cells assigned to a unique value.
Attribute Definition Source: ESRI
Overview Description:
Entity and Attribute Overview: This dataset contains kernel density distribution of the Central Arctic Herd.
Entity and Attribute Detail Citation: Further information for entity types is available in the North Slope REA Final Report. Attribute details are listed in this metadata.
Distribution Information:
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Specification: Varies
File Decompression Technique: No compression applied
Format Name: ESRI Layer Package (LPK)
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: https://landscape.blm.gov/NOS_2012_layerpackages/NOS_TS_C_180701_Caribou_CentralAnnualDensity.lpk
Access Instructions: Download from Landscape Approach Data Portal
Fees: N/A
Ordering Instructions: Download from Landscape Approach Data Portal
Available Time Period:
Time Period Information:
Single Date/Time:
Calendar Date: 2016
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.
Technical Prerequisites: ESRI ArcGIS software, version 10.0 or greater
Resource Description: Downloadable Data
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: 20160907
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: Alaska Department of Fish and Game
Contact Person: Miles Spathelf
Contact Position: Habitat Biologist III
Contact Address:
Address Type: mailing and physical
Address: 333 Raspberry Road
City: Anchorage
State or Province: AK
Postal Code: 99518
Country: US
Contact Voice Telephone: 907-267-2463
Contact TDD/TTY Telephone: None
Contact Facsimile Telephone: 907-267-2464
Contact Electronic Mail Address: miles.spathelf@alaska.gov
Hours: Monday through Friday, 0900 to 1700 Alaska Time
Contact Instructions: http://www.adfg.alaska.gov/
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: 20140210
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