Table 2. The variation of functional dissimilarity explained by geographic and environmental distances across scales using multiple regressions on distance matrices.

Scale (m2)	Response distance matrix	Explanatory distance matrices
		Combination of geographic and environmental distance	Geographic distance	Environmental distance
10 × 10	Dpw’	0.006	0.002	0.003
	Dnn’	0.012*	0.011	0.001
20 × 20	Dpw’	0.172***	0.006***	0.166***
	Dnn’	0.224***	0.040***	0.184***
50 × 50	Dpw’	0.201***	0.007***	0.201***
	Dnn’	0.271***	0.074***	0.236***
100 × 100	Dpw’	0.202***	0.026***	0.200***
	Dnn’	0.401***	0.121***	0.396***

***P < 0.001, **P < 0.01, *P < 0.05.

“Combination of geographic and environmental distance” represents the whole variation explained by the spatial and environmental components; “Geographic distance” represents the pure variation explained by the spatial component; “Environmental distance” represents the pure variation explained by the environmental component.