3.4 Quantifying the relative impact of IBE, IBD, IBB, and IBP on
genomic differentiation
The GDM based on pairwise FST values explained 83% of
the variation in the model. Geographic distance, precipitation
seasonality, precipitation of warmest quarter, precipitation of coldest
quarter, and percent tree cover were all significant predictor variables
in the full models. In contrast, when SNP presence-absence data was used
as the biological response variable, the full models explained 97% of
the variation and only geographic distance, precipitation of the warmest
quarter, and precipitation of the coldest quarter were significant
variables (Table 1). Neither IBB or IBP were significant in any of the
models.