Table 3.
Spearman's rank correlation coefficient rho of relative 16S rRNA gene T-RF abundances across all forest samples with soil and site characteristicsa
| Characteristic (n = 30 samples) | T-RF 90, Gp1 | T-RF 256, Gp1 | T-RF 142, Gp3 | T-RF 134, Gp5 | T-RF 163, Gp6 | T-RF 189, Gp6 | T-RF 192, Gp6 | T-RF 281, Gp6 | T-RF 283, Gp6 | T-RF 460, Gp11 | T-RF 130, Gp17 | T-RF 429 | T-RF 554 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pH | 0.60*** | −0.67*** | 0.42 | 0.87*** | 0.73*** | 0.88*** | 0.83*** | 0.85*** | 0.75*** | 0.49* | 0.83*** | −0.89*** | −0.77*** |
| Corg | 0.52* | −0.50* | 0.31 | 0.71*** | 0.56** | 0.75*** | 0.74*** | 0.79*** | 0.58** | 0.39 | 0.72*** | −0.70*** | −0.61*** |
| Nitrogen (N) | 0.54* | −0.56** | 0.38 | 0.74*** | 0.60** | 0.79*** | 0.78*** | 0.84*** | 0.67*** | 0.44 | 0.73*** | −0.76*** | −0.63*** |
| Corg/N ratio | −0.32 | 0.57** | −0.69*** | −0.66*** | −0.49* | −0.70*** | −0.70*** | −0.81*** | −0.77*** | −0.41 | −0.70*** | 0.85*** | 0.58** |
| Phosphorus | 0.36 | −0.53* | 0.40 | 0.71*** | 0.48* | 0.68*** | 0.72*** | 0.79*** | 0.60** | 0.47 | 0.72*** | −0.72*** | −0.57** |
| Soil moisture | 0.40 | −0.51* | 0.59** | 0.58** | 0.41 | 0.67*** | 0.61*** | 0.62*** | 0.71*** | 0.30 | 0.67*** | −0.72*** | −0.57** |
| Amoebae | 0.16 | −0.31 | 0.32 | 0.34 | 0.27 | 0.44 | 0.42 | 0.444 | 0.43 | 0.17 | 0.47 | −0.35 | −0.51* |
| Nitrate | 0.19 | −0.27 | 0.46 | 0.18 | 0.16 | 0.38 | 0.36 | 0.39 | 0.54* | 0.21 | 0.26 | −0.35 | −0.12 |
Only T-RFs 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. The predominant acidobacterial subgroup represented by the analyzed T-RFs is mentioned. Soil temperature, soil respiration, abundance of flagellates and ciliates, the number of vascular plant species, land use intensity, C/N ratio, and ammonium content were included in the calculations but did not show any significant correlations and, therefore, have been excluded from the table.