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Hawai’i soil map. (A) Location of soil samples in the Hawaiian Islands, with NTM-positive (green stars) and NTM-negative soils (black dots) as indicated. (B) Map of Oahu indicating NTM-positive and -negative soils. Blue contours are mean annual rainfall (mm/yr). Red indicates the presence of bedrock at the surface and the other map colors represent various soil orders (48).
