Black Bear least-cost corridors for NSNF Connectivity - CDFW [ds1009]
type: Dataset
description: The northern Sierra Nevada foothills wildlife connectivity project modeled wildlife corridors for 9 focal species between 238 landscape blocks within the northern Sierra Nevada foothills and neighboring ecoregions. We followed the least-cost corridor techniques described by Beier et al. (2007). This analysis identified the least-cost corridor, or the best potential route for each species, between neighboring landscape blocks. The data needed for a least-cost corridor analysis are a resistance raster and landscape blocks. The resistance raster is the inverse of the species distribution model (SDM) output (i.e., Maxent or BioView habitat models, which rank habitat suitability across the landscape from 0-100 for each species). We identified habitat patches for each focal species within each landscape block, and connected those habitat patches using the least-cost corridor models. The least-cost corridor model does not identify barriers, risk and dispersal. We removed urban areas and areas of unsuitable/non-restorable habitat from the corridors and then inspected the corridor to make sure they were continuous. We examined the amount of predicted suitable habitat in each corridor, and measured the distance between habitat patches within each corridor to make sure it was within the maximum dispersal distance for that focal species. If the corridors did not meet these rules then habitat patches on the border of the corridor were added to meet the selection requirements. For more information see the project report at [https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=85358].
keyword: amerigeo
keyword: amerigeoss
keyword: authcdfw
keyword: california-department-of-fish-and-wildlife
keyword: california-natural-resources-agency
keyword: caopendata
keyword: cdfw
keyword: ckan
keyword: cn-black-bear
keyword: connectivity
keyword: ds100920140617wm
keyword: geo
keyword: geoss
keyword: national
keyword: north-america
keyword: northern-sierra-nevada-foothills
keyword: sn-ursus-americanus
keyword: united-states
issued: 2020-01-31T17:19:52+00:00
modified: 2021-05-14T19:40:49+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://data-cdfw.opendata.arcgis.com/datasets/ef0f542ff792444bbce8b20176bcfc2b_0
issued: 2021-10-02T04:37:28.462924
modified: 2025-11-21T10:22:38.343249

ArcGIS GeoService
type: Distribution
media type: application/octet-stream
format: ArcGIS GeoServices REST API
access URL: https://services2.arcgis.com/Uq9r85Potqm3MfRV/arcgis/rest/services/biosds1009_fpu/FeatureServer/0
issued: 2021-10-02T04:37:28.462931
modified: 2025-11-21T10:22:38.343668

GeoJSON
type: Distribution
media type: application/geo+json
format: GeoJSON
access URL: https://data-cdfw.opendata.arcgis.com/datasets/ef0f542ff792444bbce8b20176bcfc2b_0.geojson
issued: 2021-10-02T04:37:28.462934
modified: 2025-11-21T10:22:38.344059

CSV
type: Distribution
media type: text/csv
format: CSV
access URL: https://data-cdfw.opendata.arcgis.com/datasets/ef0f542ff792444bbce8b20176bcfc2b_0.csv
issued: 2021-10-02T04:37:28.462937
modified: 2025-11-21T10:22:38.344447

KML
type: Distribution
media type: application/vnd.google-earth.kml+xml
format: KML
access URL: https://data-cdfw.opendata.arcgis.com/datasets/ef0f542ff792444bbce8b20176bcfc2b_0.kml
issued: 2021-10-02T04:37:28.462940
modified: 2025-11-21T10:22:38.344822

Shapefile
type: Distribution
media type: application/zip
format: ZIP
access URL: https://data-cdfw.opendata.arcgis.com/datasets/ef0f542ff792444bbce8b20176bcfc2b_0.zip
issued: 2021-10-02T04:37:28.462942
modified: 2025-11-21T10:22:38.345203