Figure 2

GC composition of bacterial protein coding DNA sequences from the 0.1-μm filter of each site sampled. Percent GC is plotted on the y-axis and the % of bacterial sequences on the x-axis.
GC composition of bacterial protein coding DNA sequences from the 0.1-μm filter of each site sampled. Percent GC is plotted on the y-axis and the % of bacterial sequences on the x-axis.