Parish's Daisy - CBI Species Distribution Model, DRECP

These data are statistical model outputs for Parish’s daisy (Erigeron parishii ) 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 151 detections points obtained from Dudek and downloaded in March 2013 from CNDDB (California Department of Fish and Wildlife, Biogeographic Data Branch); Consortium of California Herbaria (http://ucjeps.berkeley.edu/consortium/), and USFWS Carlsbad Fish & Wildlife Office (http://www.fws.gov/carlsbad/GIS/CFWOGIS.html).
The model was built with the following 6 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:

Growing degree days above 5°C (cumulative temp.);
Minimum temperature of coldest period (°C, x10);
Precipitation of warmest quarter (mm);
Soil available water storage (cm) from 0-50cm, derived from SSURGO or STATSGO where SSURGO was unavailable.  The mapunit-area-weighted average of aws050wta in table muaggatt;
Soil water content at wilting point, produced by A. & L. Flint;
Soil thickness, produced by A. &. L. Flint.