Fig. 4From: 16S metabarcoding, total soil DNA content, and functional bacterial genes quantification to characterize soils under long-term organic and conventional farming systemsMultivariate analyses for the bacterial communities sequencing data at the genus taxonomic level to evaluate the beta diversity in OA sites (green) and CA sites (purple). a Principal Component Analysis (PCA), b Principal Coordinate Analysis (PCoA) based on the Bray–Curtis dissimilarity matrix, c Permutational Multivariate Analysis of Dispersion (PERMDISP2) showing the distance of each sample from the group’s centroidBack to article page