. 2012 Oct;78(20):7398–7406. doi: 10.1128/AEM.01325-12

Table 4.

Spearman's rank correlation coefficient rho of OTUs with more than 20 sequences across all six clone libraries with soil and site characteristics^a

Characteristic	OTU7, Gp1	OTU94, Gp1	OTU32, Gp1	OTU119, Gp1	OTU2, Gp1	OTU3, Gp5	OTU15, Gp5	OTU9, Gp6	OTU115, Gp6	OTU6, Gp6	OTU92, Gp6	OTU45, Gp6	OTU99, Gp6
pH	−0.84	−0.88	−0.88	−0.88	−0.90	0.03	−0.37	−0.64	0.97^**	0.26	0.88	0.90	0.75
Phosphorus	−0.99^***	−0.94^*	−0.94^*	−0.94^*	−0.93^*	0.46	0.03	−0.29	0.88	0.71	0.94^*	0.81	0.70
C_org/N ratio	0.90	0.94^*	0.94^*	0.94^*	0.84	−0.12	0.28	0.58	−0.97^**	−0.37	−0.94^*	−0.99^***	−0.67
Soil moisture	−0.74	−0.62	−0.62	−0.62	−0.59	0.88	0.61	0.34	0.51	0.99^***	0.62	0.43	0.31
Soil temp	−0.32	−0.46	−0.46	−0.46	−0.38	−0.73	−0.93^*	−0.99^***	0.50	−0.49	0.46	0.61	0.46
Soil respiration	−0.58	−0.70	−0.70	−0.70	−0.64	−0.46	−0.77	−0.93^*	0.71	−0.20	0.70	0.75	0.70
Amoebae	−0.99^***	−0.94^*	−0.94^*	−0.94^*	−0.93^*	0.32	−0.12	−0.44	0.97^**	0.60	0.94^*	0.93^*	0.61
No. of vascular plant species	−0.22	−0.12	−0.12	−0.12	−0.13	0.96^*	0.94^*	0.79	0.06	0.81	0.12	−0.07	0.02
Ammonium	0.93^*	0.88	0.88	0.88	0.99^***	−0.38	0.06	0.35	−0.88	−0.60	−0.88	−0.73	−0.78
Nitrate	−0.75	−0.88	−0.88	−0.88	−0.81	0.12	−0.22	−0.49	0.79	0.26	0.88	0.73	0.99^***

Only OTUs with significant (*, P < 0.05; **, P < 0.01; ***, P < 0.001) correlations are shown in bold. P values have been adjusted for multiple comparisons by the FDR approach. Organic carbon and nitrogen content and abundances of flagellates and ciliates were included in the calculations but did not show any significant correlations and, therefore, have been excluded from the table.