Table 2.

Influence of spatial and geochemical factors on microbial community composition.

	RDA-test		Reduced RDA
	r2	P	r2	P
ARCHAEA
Location	0.215	0.16	0.103	0.16
Geochemistry*	0.654	0.04	0.54	0.02
Location + geochemistry*	–	–	0.603	0.02
BACTERIA
Location*	0.149	0.03	0.064	0.03
Geochemistry	0.226	0.18	0.054	0.1
Location + geochemistry	–	–	0.113	0.1

^*Indicates statistically significant relationship (P < 0.05).