Fig. 4From: Comparative metagenomics and functional profiling of crude oil-polluted soils in Bodo West Community, Ogoni, with other sites of varying pollution historyPhyletic representation of taxonomic biomarkers detected for the pristine and crude oil-polluted samples. The external legend represent the detected biomarker taxa, while the innermost ring represent levels 3 to 6 taxonomic hierarchy of the detected biomarker taxa. Differentially abundant taxa are colored according to oil pollution history of the distinct environmentsBack to article page