Table 4: Generalized dissimilarity modeling results. Shown are the percentages of the total variation observed and important predictor variables for “80–20” and “90–10” criteria for full models (using both geographic distance and environmental variables), models with environmental variables only, models with geographic distance only, and random models.

Model % variance explained Variables selected* 80–20 full 63.9 dist, Bio12, Bio10, elevation, Bio18 80–20 environment only 57.4 Bio16, elevation, Bio12, Bio10 80–20 distance only 39.9 dist 80–20 random env 0.6 90–10 full 58.9 dist, Bio18, Bio10, elevation, Bio12 90–10 environment only 53.4 elevation, Bio18, Bio10, Bio12 90–10 distance only 38.8 Dist 90–10 random env 0.4

*Variables are shown in order of decreasing importance (Figure 3); dist: geographic distance; for an explanation of the bioclimatic variables, see Table 3.