Fig. 2
From: High cost enhances cooperation through the interplay between evolution and self-organisation
An increase in costs results in an evolutionary increase in cooperation. a Evolutionary steady state distribution (in blue) and mean (red diamond) of public good production are plotted for different values of costs (benefits are kept constant). Parameters: benefit (per unit of public good produced) b=10, k death=0.2, k move=0.02, μ=0.05, δ=0.1. The maximum public good production is set to p max=10. b Snapshots of the lattice at evolutionary steady state. Colour coding depends on public good production rate. White is background. Lattice dimensions used for the simulations from left to right: 2562, 5122, 20482, 20482 (1/16 of the lattice is displayed for clarity, see Additional file 1: Section 1 for the full snapshots)