Fig. 6: Geography of ARGs in the studied mine sites.

A–C Principal coordinates analysis (PCoA) of ARG composition based on Bray-Curtis dissimilarity grouped by geographic position. N north, S south, NE northeast, NW northwest; SE southeast; SC south central; SW southwest. D–F Spearman’s rank correlations between the Bray–Curtis similarity of ARG composition in the studied mine sites and the geographical distance between mine sites.