Species analysis
Statistical exploration
Classification trees
Variables
California Quail
Occurred the most disproportionately in hexagons with July maximum
temperature (hex. avg.) of 24-33� C and agricultural lands. Somewhat
less likely to occur where cooler (July maximum temperature [hex.
avg.] of 15-24� C) if there are more than 2 miles of stream per sq. mi.
The logistic regression analysis showed positive or negative
association with agricultural lands, red alder - bigleaf maple forest,
June maximum temperature (hex. max.), the extent of public land,
and-to a lesser degree-Sitka spruce - w. hemlock maritime forest,
true fir - mountain hemlock montane forest, sagebrush steppe, and
topographic variation.
Classification trees
Hexagons: using ONHP land cover classification (accuracy score: 85.58)
Squares: using ONHP land cover classification (accuracy score: 80.99)
Hexagons: using AVHRR land cover classification (accuracy score: 84.19)
