Fig. 5. Fitted response surfaces for all 8 desertscrub study species under the best models. Green surfaces are predictions of the constraint model M_{CONSTRAINT} for each species, and orange surfaces are predictions of the best model for the two cases in which another model outperformed M_{CONSTRAINT}. Lowerright axis in each graph: x_{1}, the proportion desertscrub cover within 56 m, i.e., local scale. Lowerleft axis: x_{2}, proportion desertscrub cover within 1784 m, i.e., landscape scale. Vertical axis: persite occurrence probability. For visual clarity, vertical axis scaling varies among species according to maximum predicted occurrence probability. Scaling of two horizontal axes remains constant. Fourletter codes identify species; see Table 1 for species names. ASYMP and BILOG represent the asymptotic and bivariate logistic models, respectively.
