Figure 4.
Growth rates (determined by PTR) often do not predict changes in relative abundance of a population in subsequent samples. Growth rate measurements for all gut colonists are shown in A and B. Corresponding relative abundance information is shown in C and D. The lack of correspondence between increased PTR in one sample and increased relative abundance in the next sample could be due either to the transient nature of growth spurts or to the fact that cell death is not accounted for in this analysis.
