The effect of one (a) and three (b) trophic consumes on the change in MNTD community clustering C after predator invasion. Here the reference competitive consumer community has a low degree of clustering (see the electronic supplementary material, appendix 1, figure S3, resource width on the island = 100% and consumer niche width = 2). Lines and error bars represent the mean and standard deviation for 50 replicated simulations. A fine-grained parameter space resolution of these results also including invasions of one to five predators are in electronic supplementary material, appendix 1, figure S4. Constant parameter values in our model that generated these results: r = 1, K = 300, bcon = 0.005, mcon = 0.1, ccon = 0.15 mpred = 0.1 and cpred = 0.15.