FIGURE 4 - Mapped pairwise comparisons of predicted patterns of spatial turnover in genetic composition from six GF models fit to different sets of outlier and randomly selected SNPs. The number in the lower left of each panel is the sum of the Procrustes residuals across all pixels within the range of balsam poplar for each pairwise model comparison, with higher values and lighter shading indicating greater differences in predicted geographic patterns between the model pairs.