Bendire's thrasher - Species Distribution Model, DRECP

Mar 27, 2013 (Last modified Feb 12, 2014)
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DRECP Reviewed by Conservation Biology Institute
Description:
These data are statistical model outputs for Bendire's thrasher (Toxostoma bendirei ) species distribution, completed by Frank Davis’ Biogeography Lab at UC Santa Barbara. 

Based on examination of species observation data and consultation with biologists, CBI masked the model's broad extent output to the following USFS ecoregion subsections: 322Aj', '322Ak', '322Al', '322Ao', '322Am', '322An', 'M262Bi', '322Bc', '322Ba', '322Ah', '341Fe', '322Ab', '341Fe', 'M261Er', '322Cb', '322Cc', '322Ca', '322Cd', '322Bb', '322Ap'.

The UCSB Biogeography Lab used Maxent to generate predictions of habitat occupancy for ~70 species for the CA Energy Commission’s project “Cumulative Biological Impacts Framework for Solar Energy in the CA Desert”, 500-10-021.

Species distribution models were produced at 270 m resolution using a subset of 22 environmental variables. Models were evaluated with 10-fold cross validated AUC scores. Both continuous probability surfaces and binary layers are available for each species modeled. Binary layers depicting predicted suitable habitat were derived using the equal training sensitivity and specificity threshold. 

For Toxostoma bendirei, Max Sensitivity + Specificity threshold = 0.3092; best AUC = 0.9342; mean AUC = 0.909. 

For more information on the environmental variables used, modeling process, and model diagnostics, please refer to the supporting document “Data Descriptions: UCSB DRECP Species Distribution Models, June 12, 2013" provided by Frank Davis.

Data Provided By:
Frank Davis and Oliver Soong
Bren School of Environmental Science & Management
University of California
Santa Barbara, CA  93106-5131
Lab website: www.biogeog.ucsb.edu

Content date:
not specified
Citation:
Frank Davis and Oliver Soong
Bren School of Environmental Science & Management
University of California, Santa Barbara
Spatial Resolution:
270 m
Contact Organization:
Frank Davis and Oliver Soong
Bren School of Environmental Science & Management
University of California
Santa Barbara, CA  93106-5131
Lab website: www.biogeog.ucsb.edu
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Creative Commons LicenseThis work is licensed under a Creative Commons Attribution 3.0 License.
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drecp, bendire's thrasher, statistical model, toxostoma bendirei, maxent, species distribution
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