Figure 1. Principal Component Analysis (PCA) of diversity indices in relation to soil abiotic properties [clay, organic matter content (OMC), pH, P, K,] determined from the six sampling sites (JC – Júlio de Castilhos, SB – São Borja, VA – Vacaria, CM – Campina das Missões, GM – Guarani das Missões, and BV – Boa Vista do Cadeado). Principal component 1 and component 2 accounted for 46.57% and for 31.35% of the total variation, respectively.
