TABLE 3.

Spearman rank correlation coefficients (below diagonal; probabilities above) between estimators of genetic diversity, inbreeding coefficients, and migration for each sample site, and the environmental predictor variable upstream size

	Upstream size	He	Â	θ	F2mod	FVit	NmMIG	mBAPS	Im–EmMIG	Im–EmBAPS
Upstream size	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
He	0.658	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
Â	0.787	0.832	<0.001	<0.001	<0.001	<0.001	<0.01	<0.001	<0.001
θ	0.890	0.842	0.957	<0.001	<0.001	<0.001	<0.01	0.000	<0.001
F2mod	−0.773	−0.795	−0.971	−0.943	<0.001	<0.001	<0.001	<0.001	<0.001
FVit	−0.655	−0.999	−0.827	−0.847	0.789	<0.001	<0.001	<0.001	<0.001
NmMIG	0.831	0.892	0.837	0.887	−0.852	−0.897	<0.001	<0.001	<0.001
mBAPS	0.676	0.706	0.606	0.626	−0.680	−0.709	0.806	<0.001	<0.001
Im–EmMIG	0.792	0.881	0.792	0.785	−0.821	−0.886	0.914	0.807	<0.001
Im–EmBAPS	0.743	0.753	0.691	0.764	−0.750	−0.755	0.859	0.863	0.850

Symbols are as in Table 1, except Im–Emi_MIG is mean immigrant–emigrant gene flow and Im–Em_BAPS is mean recent immigration–emigration rates (see Figure 4).

n = 20 for parameters calculated by MIGRATE (see materials and methods) and n = 24 for all others.