Munz's Cholla - Species Distribution Model, DRECP

These data are statistical model outputs for Munz's cholla (Cylindropuntia munzii ) species distribution, completed by CBI. Predictions of habitat occupancy were generated from Maxent models for the DRECP.

This species distribution model was produced for a limited extent within the DRECP region, defined as a union of USDA ecoregion subsections with occurrences and 10km buffer of occurrences, at 270 m resolution with 9 detections points obtained March 2013 from CNDDB (California Department of Fish and Wildlife, Biogeographic Data Branch) and Consortium of California Herbaria (http://ucjeps.berkeley.edu/consortium/).
The model was built with the following 4 environmental predictors (provided to CBI by Frank Davis’ Biogeography Lab at UC Santa Barbara, created for the CA Energy Commission’s project “Cumulative Biological Impacts Framework for Solar Energy in the CA Desert”, 500-10-021) in order of importance:

Topographic relief in the 270m cell estimated as the standard deviation of elevations from 30m digital elevation model;
Temperature seasonality (C of V, x100);
Maximum temperature of warmest period (°C, x10);
Soil thickness, produced by A. &. L. Flint.