Results of Mantel and partial Mantel tests performed with genetic distance as the dependent variable and with a listing of variables included in the models (number of rivers [River] and number of roads [Road] between sites, mean elevation of sites minus the minimum elevation between sites [Elevation], straight-line distance [Distance], and true distance between sites [True distance]), the number of parameters per model (K), AICc, Δ AICc, AICc weight, and R2 (total variance explained by the model)