Table 4. Individual variable names and descriptions used in species models.
| Variable Name | Definition |
| WHR type (Number) | |
| 1 | Alpine-Dwarf Shrub percentage within a 1km radius |
| 2 | Agriculture percentage within a 1km radius |
| 3 | Annual Grassland percentage within a 1km radius |
| 4 | Alkali Desert Scrub percentage within a 1km radius |
| 5 | Aspen percentage within a 1km radius |
| 6 | Barren percentage within a 1km radius |
| 7 | Bitterbrush percentage within a 1km radius |
| 8 | Blue Oak-Foothill Pine percentage within a 1km radius |
| 9 | Blue Oak Woodland percentage within a 1km radius |
| 10 | Coastal Oak Woodland percentage within a 1km radius |
| 11 | Closed-Cone Pine-Cypress percentage within a 1km radius |
| 12 | Chamise-Redshank Chaparral percentage within a 1km radius |
| 13 | Coastal Scrub percentage within a 1km radius |
| 14 | Douglas-Fir percentage within a 1km radius |
| 15 | Desert Riparian percentage within a 1km radius |
| 16 | Desert Scrub percentage within a 1km radius |
| 17 | Desert Succulent Shrub percentage within a 1km radius |
| 18 | Desert Wash percentage within a 1km radius |
| 19 | Eastside Pine percentage within a 1km radius |
| 20 | Estuarine percentage within a 1km radius |
| 21 | Freshwater Emergent W percentage within a 1km radiusetland |
| 22 | Jeffrey Pine percentage within a 1km radius |
| 23 | Joshua Tree percentage within a 1km radius |
| 24 | Juniper percentage within a 1km radius |
| 25 | Klamath Mixed Conifer percentage within a 1km radius |
| 26 | Lacustrine percentage within a 1km radius |
| 27 | Lodgepole Pine percentage within a 1km radius |
| 28 | Low Sage percentage within a 1km radius |
| 29 | Marine percentage within a 1km radius |
| 30 | Mixed Chaparral percentage within a 1km radius |
| 31 | Montane Chaparral percentage within a 1km radius |
| 32 | Montane Hardwood-Conifer percentage within a 1km radius |
| 33 | Montane Hardwood percentage within a 1km radius |
| 34 | Montane Riparian percentage within a 1km radius |
| 35 | Perennial Grassland percentage within a 1km radius |
| 36 | Pinyon-Juniper percentage within a 1km radius |
| 37 | Palm Oasis percentage within a 1km radius |
| 38 | Ponderosa Pine percentage within a 1km radius |
| 39 | Riverine percentage within a 1km radius |
| 40 | Redwood percentage within a 1km radius |
| 41 | Red Fir percentage within a 1km radius |
| 42 | Subalpine Conifer percentage within a 1km radius |
| 43 | Saline Emergent Wetland percentage within a 1km radius |
| 44 | Sagebrush percentage within a 1km radius |
| 45 | Sierran Mixed Conifer percentage within a 1km radius |
| 46 | Urban percentage within a 1km radius |
| 47 | Valley Oak Woodland percentage within a 1km radius |
| 48 | Valley Foothill Riparian percentage within a 1km radius |
| 49 | Water percentage within a 1km radius |
| 50 | White Fir percentage within a 1km radius |
| 51 | Wet Meadow percentage within a 1km radius |
| 52 | Unknown Shrub Type percentage within a 1km radius |
| 53 | Unknown Conifer Type percentage within a 1km radius |
| 54 | Pasture percentage within a 1km radius |
| 55 | Eucalyptus percentage within a 1km radius |
| DENS_INTER | Linear density of intermittent streams in m/km2 |
| DENS_PEREN | Linear density of perenial streams in m/km2 |
| DENS_CANAL | Linear density of canals in m/km2 |
| DIST_EMERG | Straight line distance to nearest emergent wetland habitat |
| DIST_LAKES | Straight line distance to nearest lake |
| DIST_STREAM | Straight line distance to nearest intermittent or perenial stream |
| DIST_CANAL | Straight line distance to nearest canal |
| PT_1-12 | Monthly (1-12) precipitation normals for 1971-2000 |
| TTMIN_1-12 | Average monthly (1-12) minimum temerature for 1971-2000 |
| TTMAX_1-12 | Average monthly (1-12) maximum temerature for 1971-2000 |
| ten9_urban | Combined WHR vegetation types classified as urban |
| ten8_wetland | Combined WHR vegetation types classified as wetland |
| ten7_water | Combined WHR vegetation types classified as water |
| ten6_conifer | Combined WHR vegetation types classified as coniferous forest |
| ten5_barren | Combined WHR vegetation types classified as barren |
| ten4_hardwood | Combined WHR vegetation types classified as hardwood forest |
| ten3_desert | Combined WHR vegetation types classified as desert |
| ten2_herba | Combined WHR vegetation types classified as herbacious |
| ten1_agric | Combined WHR vegetation types classified as agriculture |
| ten0_shrub | Combined WHR vegetation types classified as shrubland |
| SLOPE_DEM_ | Degree of slope |
| ELEVATION_ | Elevation in meters |
| P_ORCHARD | Percent orchard field within a 1 km radius |
| P_RICE | Percent rice field within a 1 km radius |
| P_PASTURE | Percent pasture within a 1 km radius |
| P_URBAN | Percent urban land within a 1 km radius |
| P_VINEYARD | Percent vineyard within a 1 km radius |
| P_IDLE | Percent idle cropland within a 1 km radius |
| P_FIELDCROP | Percent of all combined fieldcrops within a 1 km radius |
| P_5KFIELDCROP | Percent of all combined fieldcrops within a 5 km radius |
| P_5KANNUAL | Percent annual grassland within a 1 km radius |
| P_EMERGWET | Percent emergent wetland habitat within a 1 km radius |
| P_LAKES | Percent lacustrine habitat within a 1 km radius |
| whr10 | All combined WHR habitat types |
| whrnum | All individual WHR habitat types |
| hu_eco_union1 | Variable delineating the study area |