Figure 2.

Range expansion of a theoretical species with different models of dispersal. The square space is composed of 10,000 demes. Population density in each deme is logistically regulated with a carrying capacity of 50 individuals (K). The abundance is represented as a proportion of the carrying capacity. The intrinsic growth rate (r) is fixed to 0.5 (scenario NC1, Table 1). The corresponding time is shown at the top of each column (t = number of generations). All expansion starts at t = 0 in the center deme.