SDE Feature Class
Tags
Pika, High Elevation, Climate Change, Talus, Whitebark Pine, Belding's ground squirrel, Clark's Nutcracker, Sierra Nevada
Data was collected as a part of the High-Elevation Species and Natural Commnunities in the Northern Sierra Nevada project. This was a state wildlife grant project funded by CDFW and Fish and Wildlife Service which was undertaken to better understand present species and trends, and model future trends with climate change in high-elevation species and communities.
Species occupancy and habitat characteristics were assessed in three focal community types: meadows, talus, and conifer. We designed and conducted surveys, and performed analysis of three focal species that appear to be especially vulnerable to climate change: Belding's ground squirrel (Urocitellus beldingi), gray-headed American pika (Ochotona princeps schisticeps), and whitebark pine (Pinus albicaulis). Clark's nutcrackers were also observed. Whitebark pine is a vital tree line food source and habitat for multiple wildlife species. We visited or conducted occupancy and habitat surveys at 253 random stratified sites in the northern Sierra Nevada of California, including 46 sites which were deemed to be inappropriate habitat or inaccessible for safety reasons once approached in the field. We used aerial imagery to assess habitat type at 14,524 random stratified study sites. Occupancy analyses confirmed that all three focal species are restricted to cold climates. All sightings provided are verified visual sightings.
North Central Region, Resource Assessment Program; funded by a State Wildlife Grant from the US Fish and Wildlife Service; initiated by Armand Gonzales, directed by David Wright, Canh Nguyen, Stacy Anderson. Conversion into ArcGIS format completed by Chris Curlis.
For use by California Department of Fish and Wildlife (CDFW) staff and California Natural Diversity Database (CNDDB) subscribers. Due to the sensitive status of the species in this data, CDFW policy restricts its access.
Disclaimer : The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.
Extent
| West | -121.504403 | East | -119.005793 |
| North | 40.486685 | South | 37.078025 |
| Maximum (zoomed in) | 1:5,000 |
| Minimum (zoomed out) | 1:150,000,000 |
For use by California Department of Fish and Wildlife (CDFW) staff and California Natural Diversity Database (CNDDB) subscribers. Due to the sensitive status of the species in this data, CDFW policy restricts its access.
Disclaimer : The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.