Fig. 3

Habitat and global distribution of SPRUCE vOTUs and viral clusters (VCs), using the PIGEON database for context. A Composition of the PIGEON database of vOTUs (n = 266,805) by source environment. RefSeq includes isolate viral genomes from a variety of source environments (prokaryotic viruses in RefSeq v95). Plants = plant-associated, Humans = human-associated, Other Animals = non-human animal-associated. B vOTUs (n = 4326) recovered from SPRUCE peat by read mapping, according to the location from which they were first recovered. Numbers indicate SPRUCE vOTUs from a given location. Circle sizes are proportional to the number of vOTUs. C Percentages of vOTUs recovered from SPRUCE that had predicted taxonomy based on clustering with RefSeq viral genomes (Taxonomically classified), had unknown taxonomy but shared a genus-level viral cluster (VC) with one or more previously recovered vOTUs in the PIGEON database (Unclassified, previously recovered), or were previously unknown at the VC (genus) level (Previously unknown). D Habitat(s) for each soil VC (n = 20,939) in the PIGEON database, based on source habitat(s) for the vOTU(s) contained in each VC. For a given soil VC, either all vOTUs were exclusively derived from a single habitat (non-overlapping regions), or two or more vOTUs were derived from different soil habitats (overlapping regions). E Similar to D, but for VCs with vOTUs from soil, marine, and/or freshwater habitats (n = 80,714 VCs)