Fig. 2From: Biogeographical distribution analysis of hydrocarbon degrading and biosurfactant producing genes suggests that near-equatorial biomes have higher abundance of genes with potential for bioremediationUPGMA Tree computed by MEGAN with RefSeq data. The distance between the clusters is based on pairwise distance among taxa. The soil samples are represented with a red dot and the water samples with blue. The red squares show the proposed cluster divisionBack to article page