Table 2. Mantel and partial Mantel tests for the correlation between ses.betaMNTD and the explanatory distances (elevational, geographic and environmental distance) using Spearman's rho for different habitat types and spatial scales.

Ses.betaMNTD		Local							Regional
Effects of	Controlling for	Surface sediments			Lake water	Subsurface sediments		Stream biofilm	Surface sediments
		KL1	KL7	ThS	ThW	LG	KS	STR	SC
Geographic		0.151	0.202	0.353***	0.244**	0.177*	0.394***	0.376**	0.145
Environmental		0.338**	0.404*	0.406***	0.386***	0.407***	0.413**	0.410***	0.387**
Elevational								0.734***	0.157
Geographic	Environmental	0.078	0.140	0.173*	0.074	−0.067	0.317***	0.240*	0.029
	elevational							−0.413*	0.125**
Elevational	Environmental							0.668*	0.059
	geographic							0.745*	0.139**
Environmental	Geographic	0.315*	0.380*	0.273*	0.316**	0.378***	0.341**	0.296*	0.364*
	elevational							−0.007*	0.363**

The significances are tested based on 10 000 permutations. ***P<0.001; **P<0.01; *P<0.05. For the HX group, both the geographic and environmental distances were not significantly related to bacterial phylogenetic turnover (P>0.05). For ZJ and NJ groups, the Mantel analyses are not conducted because of their lower sample numbers (7 and 5, respectively).