Table 3.

Comparisons of slopes and intercepts of the regression of the log(Nm) as estimated by the island model ($Nm\approx \frac{1}{4}\left(\frac{1}{F_{ST}}-1\right)$) on log(geographic distance) for the four regions considered

Comparisons	Significance of intercept differences	Significance of slope differences
Ardennes vs. Pyrenees	****	****
Morvan vs Ardennes	**	NS
Asturias vs Pyrenees	**	**
Asturias + Pyrenees vs. Ardennes + Morvan	**	**

NS: non significant; **: P < 0.05; ****:P < 0.001