Table 3. Test of homogeneity of dispersions (PermDisp) to compare the distances from each factor to centroids as a test for similarity in β diversity among factors.

	Df	F	N.Perm	P(perm)
Site	35	2.764	999	0.045
	107
Locality	6	4.438	999	0.026
	29
Region	2	8.216	999	0.283
	4