Mule Deer Migration Corridors - Blue Canyon - 2018-2020 [ds2971]
type: Dataset
description: The project leads for the collection of this data were Sara Holm and Julie Garcia. Mule deer (5 adult females) from the Blue Canyon herd were captured and equipped with Lotek Iridium Track MGPS collars, transmitting data from 2018-2020. GPS fix rates were between 4-13 hours. The Blue Canyon herd migrates from winter ranges in the western foothills of the Sierra Nevada range, south of Interstate 80, eastward along the Forest Hill Divide to higher altitude terrain near Soda Springs and The Cedars. To improve the quality of the data set as per Bjorneraas et al. (2010), the GPS data were filtered prior to analysis to remove locations which were: i) further from either the previous point or subsequent point than an individual deer is able to travel in the elapsed time, ii) forming spikes in the movement trajectory based on outgoing and incoming speeds and turning angles sharper than a predefined threshold , or iii) fixed in 2D space and visually assessed as a bad fix by the analyst. The methodology used for this migration analysis allowed for the mapping of winter ranges and the identification of migration corridors. Brownian Bridge Movement Models (BBMMs; Sawyer et al. 2009) were constructed with GPS collar data from 3 migrating deer, including 9 migration sequences, location, date, time, and average location error as inputs in Migration Mapper. The average migration time and average migration distance for deer was 36 days and 32.82 km, respectively. Corridors and stopovers were prioritized based on the number of animals moving through a particular area. BBMMs were produced at a spatial resolution of 50 m using a sequential fix interval of less than 27 hours. Due to the majority of BBMMs producing variance rates greater than 8000, a fixed motion variance of 1000 was set per migration sequence. Winter range analyses were based on data from 3 individual deer and 6 wintering sequences using a fixed motion variance of 1000. Winter range designations for this herd may expand…
keyword: amerigeo
keyword: amerigeoss
keyword: authcdfw
keyword: brownian-bridge-movement-model
keyword: california
keyword: california-department-of-fish-and-wildlife
keyword: california-natural-resources-agency
keyword: caopendata
keyword: cdfw
keyword: ckan
keyword: connectivity
keyword: ds297120220204wm
keyword: geo
keyword: geoss
keyword: gps
keyword: migration
keyword: migration-mapper
keyword: mule-deer
keyword: national
keyword: north-america
keyword: odocoileus-hemionus
keyword: placer
keyword: stopover
keyword: telemetry
keyword: united-states
keyword: winter-range
issued: 2022-02-17T17:48:20+00:00
modified: 2022-02-17T17:48:29.921000+00:00
theme: {"Natural Resources"
theme: Water}
contact point: Organization
  fn: BIOS_Admin

US Migrating
type: Agent

ArcGIS Hub Dataset
type: Distribution
format: HTML
access URL: https://gis.data.cnra.ca.gov/maps/CDFW::mule-deer-migration-corridors-blue-canyon-2018-2020-ds2971
issued: 2022-04-28T01:53:00.119002
modified: 2025-11-21T03:09:23.466862

ArcGIS GeoService
type: Distribution
media type: application/octet-stream
format: ArcGIS GeoServices REST API
access URL: https://services2.arcgis.com/Uq9r85Potqm3MfRV/arcgis/rest/services/biosds2971_fpu/FeatureServer/0
issued: 2022-04-28T01:53:00.119011
modified: 2025-11-21T03:09:23.467319

GeoJSON
type: Distribution
media type: application/geo+json
format: GeoJSON
access URL: https://gis.data.cnra.ca.gov/datasets/CDFW::mule-deer-migration-corridors-blue-canyon-2018-2020-ds2971.geojson
issued: 2022-04-28T01:53:00.119014
modified: 2025-11-21T03:09:23.467729

CSV
type: Distribution
media type: text/csv
format: CSV
access URL: https://gis.data.cnra.ca.gov/datasets/CDFW::mule-deer-migration-corridors-blue-canyon-2018-2020-ds2971.csv
issued: 2022-04-28T01:53:00.119017
modified: 2025-11-21T03:09:23.468115

KML
type: Distribution
media type: application/vnd.google-earth.kml+xml
format: KML
access URL: https://gis.data.cnra.ca.gov/datasets/CDFW::mule-deer-migration-corridors-blue-canyon-2018-2020-ds2971.kml
issued: 2022-04-28T01:53:00.119020
modified: 2025-11-21T03:09:23.468498

Shapefile
type: Distribution
media type: application/zip
format: ZIP
access URL: https://gis.data.cnra.ca.gov/datasets/CDFW::mule-deer-migration-corridors-blue-canyon-2018-2020-ds2971.zip
issued: 2022-04-28T01:53:00.119022
modified: 2025-11-21T03:09:23.468892