FIGURE 4.

Galápagos marine microbiome composition across the archipelago based on recA recovery and binned at the family level. (A) Volumetric abundances of all bacterial families. The top 5 families are colored as follows Pelagibacteracea, blue; Flavobacteriaceae, purple; cyanobacteria, green; Rhodobacteraceae, red. The remaining 477 families are plotted as semitransparent blue circles. The distribution of families was categorized into four groups based on their volumetric abundances: dominant, abundant, minor, and rare, and these bins are outlined by the gray and white shading. (B) Relative abundances (percent of total site recA sequences) of all bacterial families across the sampling stations.