FIGURE 6.
Canonical correspondence analysis (CCA) of the phoC-harboring bacterial community structure with soil variables across 51 soil samples. The positions and lengths of the arrows indicate the directions and strengths of the effects of soil variables, respectively. Asterisks indicate significant relationships between soil variables and community variances, tested via the Monte Carlo simulation test (∗∗p < 0.01, ∗p < 0.05).