Table 2.

Results of beta-diversity variation partitioning. For each index, the explained variation (R²adj) is given for the effect of environment without space (Environment|Space), the effect of space without the environment (Space|Environment), and the joint effect of environment and space (Environment ∩ Space).

Model	Fraction	df	R²adj	P-value
Jaccard	Environment|Space	3	0.03	<0.001
	Space|Environment	55	0.07	<0.001
	Environment ∩ Space		0.09
	Residuals		0.81
Dpw	Environment|Space	4	0.01	<0.001
	Space|Environment	30	0.02	<0.001
	Environment ∩ Space		0.01
	Residuals		0.96
Dnn	Environment|Space	3	0.10	<0.001
	Space|Environment	36	0.21	<0.001
	Environment ∩ Space		0.11
	Residuals		0.58

P-values of permutations tests are provided for testable fractions. Dpw: pairwise phylogenetic dissimilarity index. Dnn: pairwise nearest neighbour dissimilarity index.