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The Effect of Heterogeneity on Invasion in Spatial Epidemics: From Theory to Experimental Evidence in a Model System

Figure 2

Experimental colonisation curves for the six different treatments.

(A–F) Individual colonisation curves for each of the replicates of a treatment (thin lines) and the average over all the replicates (bold solid line). The upper limit of the vertical axis in all the panels concides with the total number of sites in the population (i.e., ), while the horizontal dashed line in treatments B to F marks the number of available sites (i.e., occupied by nutrient). The fraction of invading replicates per treatment is displayed in each panel as “number of invading replicates divided by total number of replicates”. (G) Comparison of average colonisation curves for all the treatments. (H) Comparison of average colonisation curves, normalised to the total number of occupied sites per treatment.

doi: https://doi.org/10.1371/journal.pcbi.1002174.g002