Credit: Image courtesy of Wu, R., et al., DNA Viral Diversity, Abundance, and Functional Potential Vary Across Grassland Soils with a Range of Historical Moisture Regimes. mBIO 12, 6, E02595-21 (2021).
Clusters of soil viral sequences (contigs) identified across a historical precipitation gradient from arid Washington (purple) to intermediate Kansas (Blue), to wet Iowa (Orange), showing a mix of site-specific and shared viral clusters.