Figure 2

Relative abundance of AMD taxa as revealed by (a) 16S rRNA genes analysis based on 454 pyrosequencing, and (b) unassembled quality metagenomic and metatranscriptomic reads. See Table 2 for the most closely related organisms for the 11 AMD taxa, and see Supplementary Table 3 for the details of quality reads for each taxon. The relative abundance of a given populations was calculated as the number of quality DNA reads mapped to its corresponding draft genome divided by the total number of quality DNA reads.