Table 2.

Partial Mantel analysis of the relationship between the relative abundance of class and soil or plant properties^a

Phylum	Class	Soil,b partial plantc		Plant,c partial soilb
		r	P	r	P
All detected OTUs		−0.018	0.508	0.266	0.065
Firmicutes	Bacilli	0.184	0.118	0.379	0.020
	Clostridia	0.040	0.380	0.316	0.014
Proteobacteria	Alphaproteobacteria	0.137	0.139	0.300	0.012
	Betaproteobacteria	0.220	0.077	0.470	0.003
	Gammaproteobacteria	0.317	0.023	0.353	0.021
TM7	Unclassified	−0.065	0.621	0.415	0.010
Chlamydiae	Chlamydiae	0.192	0.157	0.356	0.026
Nitrospira	Nitrospira	−0.033	0.520	0.404	0.013
Verrucomicrobia	Subdivision 3	0.289	0.049	−0.193	0.922

^aOnly significantly (P < 0.05) changed phytotypes are shown.

^bSelected soil variables included proportion soil moisture at the depth of 0 to 17 cm (PSM0 to–17), percent C at the depth of 0 to 10 cm (C0–10), percent N at the depth of 0 to 10 cm (N0–10), and net N mineralization.

^cSelected plant variables included below ground carbon percent (BPC), above ground carbon percent (APC), aboveground total biomass (ATB), and total biomass (TB).