Fig. 4.

Bulk soil and root microbial communities of ■ Plantago lanceolata, ● Sanguisorba minor, and ▲ Securigera varia on initial, early and late successional sites. Principal component analysis (PCA) ordination was calculated on Hellinger-transformed OTU abundances. Bar charts represent PERMANOVA outputs showing the percent variation (adjusted R²) in the microbiota structure explained by the habitat (roots vs. soil)