(a) NMDS biplot of samples and significantly correlated environmental variable vectors (pH: R2=0.43, p=0.001; NO3: R2=0.20, p=0.014; Al: R2=0.27, p=0.001; Ca: R2 = 0.39, p=0.001; Fe: R2=0.27, p=0.003; Mn: R2=0.46, p=0.001; Si: R2=0.42, p=0.001), and (b) taxa.

(a) NMDS biplot of samples and significantly correlated environmental variable vectors (pH: R2=0.43, p=0.001; NO3: R2=0.20, p=0.014; Al: R2=0.27, p=0.001; Ca: R2 = 0.39, p=0.001; Fe: R2=0.27, p=0.003; Mn: R2=0.46, p=0.001; Si: R2=0.42, p=0.001), and (b) taxa.