FIGURE 1.

The relative abundance of taxa observed with qPCR versus the relative abundance of the taxa observed by sequencing a hypervariable region of the 16S gene. Note that the subcompositional relative abundance is shown, where the subcomposition is to taxa observed by qPCR. Specifically, $V_{ij}/{\sum }_{k=1}^{q^{\text{obs}}}{V}_{ik}$ is plotted against $W_{ij}/{\sum }_{k=1}^{q^{\text{obs}}}{W}_{ik}$. In this data set, $q^{\text{obs}}=13$ and $n=55$. This figure appears in color in the electronic version of this paper, and any mention of color refers to that version