Fig. 8
![Fig. 8](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12906-017-1948-0/MediaObjects/12906_2017_1948_Fig8_HTML.gif)
Variables (taxa) correlation plot. Each vector represents a taxonomic group (family or genus levels). Shorter vectors only slightly contribute for differentiation between groups. Longer vectors have a bigger weight in groups’ differentiation. Those variables that mostly contribute the first component (PC1) are indicated in bold text