Table 1.

Mantel and partial Mantel test summary statistics.

Samples	Mantel		Partial Mantel
	R (distance)	R (environment)	R (distance)	R (environment)
All bacteria
DNA	0.2497**	0.8228**	0.217**	0.8196**
RNA	0.2876**	0.9136**	0.2655**	0.9124**
Surface bacteria
DNA	0.3164*	0.6906**	0.1548	0.6577**
RNA	0.2284	0.8313**	−0.0578	0.8216**
OML bacteria
DNA	0.5072**	0.7387**	0.2367	0.6501**
RNA	0.6826**	0.8402**	0.5595**	0.7885**
All cyanobacteria
DNA	0.4148**	0.4994**	0.3191**	0.4309**
RNA	0.3019**	0.1556	0.2688**	0.0629

The P-values were calculated using the distribution of the Mantel or partial Mantel test statistics estimated from 1000 permutations.

^*P < 0.05

^**P < 0.01.