Fig. 5
From: Depth-related variability in viral communities in highly stratified sulfidic mine tailings
Overview of functional profiles of viral communities. a PCoA of viral COGs based on their relative abundance in each community. The analysis of similarity (ANOSIM) statistics considers samples grouped by depth (inside and outside the dashed ellipse). b Hierarchical clustering of the top ten abundant indicator COGs in the surface and the deeper layers, respectively. Relative abundances were log transformed and normalized with a z-score method