FIG 1.

Locations of 771 natural samples collected from 422 geographic sites (circles) on the Hawaiian Islands that were analyzed for the presence of NTM. Samples were taken from soils, rivers, streams, shorelines, rocks, and vegetation (Table 1). Also pictured are soil sample locations from three regions in which detailed soil mineralogy was associated with NTM presence or absence (n = 121, minerology, squares). Samples positive for respiratory-relevant NTM species (Table 1) are shown in purple, and samples positive for other NTM species are shown in green.