Figure 2

Growth and biodiversity through time in different media. (A-C) Mean habitat-wide per-capita growth rates through time of producer (blue), resistant (red), and sensitive (green) cells calculated from three replicate microhabitat experiments per medium, the dashed line indicates the standard error of the mean (SEM). Insets show the initial phase in detail and demonstrate that the growth rate of the sensitive strain fluctuates around zero in LB (A) and M9-amino acids (B) but is positive in M9-glucose (C). (D-F) Biodiversity through time is calculated at the level of an entire habitat as Shannon's index ($H=-\sum _{i=1}^3{p}_{i}ln{p}_i$, where p _i denotes the frequency of strain i), full lines indicate the mean of three independent experiments, dashed lines indicate the SEM. The dashed line at ln(2) depicts maximum diversity for 2 types.