Fig. 2

Spatial structuring of viral communities in Antarctic rocks. A Map showing collection sites with shapes and colors representative of the broad geographic area. B Stacked bar charts displaying the mean relative abundance of phage vOTUs at each site colored by predicted viral families. Sequences that were clustered into VCs with reference data are labeled by their taxonomy, sequences clustered without reference genomes are labeled “Unique VC”, while the rest are labeled based on their VContact2 status (i.e., singleton [share few or no genes with other genomes], overlap [share genes with genomes in multiple VCs], or outlier [share genes, but cannot confidently be placed in a VC]). C Principal-coordinate analysis (PCoA) visualization of Hellinger distances of viral communities. Samples are colored by site, with sites ordered by latitude, and have shapes based on geographic areas. D A scatter plot depicting a significant relationship between sandstone viral community beta diversity (Hellinger distance) and geographical distance (km) between sites