highly significantP = 0.003
For instance, OTU00513 and OTU00620 showed significant correlations with pH ( r = 0.782, P = 0.013; r = 0.692, P = 0.039) and TN ( r = 0.689, P = 0.040; r = 0.764, P = 0.017), OTU00305 and OTU00066 significantly correlated to TN ( r = 0.791, P = 0.011; r = 0.712, P = 0.032), OTU00085 and OTU00624 correlated to NO-N ( r = 0.771, P = 0.015; r = 0.721, P = 0.028), and OTU00183 had a highly significant correlation with Fe ( r = 0.854, P = 0.003).