Fig. 9From: Petroleum hydrocarbon rich oil refinery sludge of North-East India harbours anaerobic, fermentative, sulfate-reducing, syntrophic and methanogenic microbial populationsPICRUSt based analysis of functional potential of three communities. Overall distribution of the functional inventory in GR1, GR3 and DB2 (a). Distribution of genes involved in metabolism within the samples (b)Back to article page