Table 4.

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)

Variable	K	AICc	Δ AICc	AICc weight	R2
River	2	−51.56	−	0.37	93.37
River and road	3	−50.98	0.58	0.27	95.55
Distance and river	3	−49.14	2.42	0.11	94.09
River and elevation	3	−48.38	3.18	0.07	93.37
Distance and road and river	4	−47.84	3.72	0.06	95.99
River and elevation and road	4	−47.23	4.33	0.04	95.59
River and elevation and distance	4	−47.08	4.48	0.04	95.49
Road	2	−44.60	6.96	0.01	80.68
Distance and road	3	−43.91	7.65	0.01	86.82
River and elevation and road and distance	5	−43.82	7.74	0.01	96.37
Road and elevation	3	−42.86	8.7	0.00	84.51
Distance	2	−40.94	10.62	0.00	66.10
True distance	2	−40.92	10.64	0.00	66.02
Distance and road and elevation	4	−40.17	11.39	0.00	86.98
Distance and elevation	3	−39.43	12.13	0.00	73.80
Elevation	2	−36.12	15.44	0.00	29.01