The core populations and co-occurrence patterns of prokaryotic communities in household biogas digesters

Table 3 Spearman’s correlation of environmental variables to prokaryotic community structures of dominant modules in networks tested by partial Mantel test (permutations: 9999)

	pH	Phosphate	NH₄ ⁺-N	COD
(1) All samples	0.223**	0.046	0.264**	0.162*
AM1	0.056	0.111	0.021	0.138*
AM4	−0.011	−0.026	0.012	0.006
AM5	0.244**	−0.026	0.246**	−0.07
AM7	0.147*	0.139*	0.347**	0.323**
AM8	0.059	−0.026	0.110*	0.044
(2) Cluster I	0.165	0.162	0.331*	0.223
C1M0	0.263*	0.069	0.135	0.132
C1M1	0.027	0.033	0.194	0.117
C1M2	0.084	−0.065	0.401**	0.394**
C1M4	0.206*	0.309**	0.300*	0.177
C1M6	−0.084	0.330**	0.067	0.123
(3) Cluster II	0.398**	0.02	0.384**	0.157
C2M0	0.061	−0.051	0.03	−0.083
C2M1	0.295**	−0.058	0.317**	−0.04
C2M2	0.402**	0.194*	0.487**	0.203*
C2M4	0.043	−0.095	−0.048	0.029
C2M5	0.167*	−0.038	0.303**	0.323**
C2M6	0.081	−0.158	0.009	0.1
C2M8	0.164	0.004	0.184*	0.125

** Significant at p < 0.01, * significant at p < 0.05
When one environmental variable was analyzed by the partial Mantel test, the remaining three environmental variables were controlled

ISSN: 2731-3654