Figure 5
From: Resource limitation drives spatial organization in microbial groups
Effective population size Ne as a function of nutrient concentration at different inoculum sizes. Ne represents the number of cells in the purple sector of one-cell width and was calculated as indicated in the diagram on the right, where w is the width of the growing edge, he the height of the colony at the inside of the growing edge, wc the width of a single cell (taken to be 1 μm) and Vc the volume of a cell, taken to be 1 μm3. For simplicity, we assume that the sector is triangular (hence the division by 2). The plot shows that Ne increases with nutrients. Because Dg is inversely proportional to Ne, we expect it to decrease with nutrient concentrations.
