Humboldt marten and spotted owl distribution predictor response.

Individual predictor variables response functions for each species within two modeling regions (south and Central Coast). Predictor variables for northern spotted owls (Strix occidentalis caurina, Owl) and a coastal subspecies of Pacific marten (Martes caurina humboldtensis, Marten) were generated from remotely sensed data [7] and included percent canopy cover, diameter at breast height, average tree height (stand height), diameter Diversity Index (dia. Diversity index) and trees per hectare (ha). Additional descriptions of variables are found in Table 1.