Movie S1.

Symmetric two-species competition in structurally isotropic and anisotropic environments. Simulation parameters are L/(1.29λ) = 100, P = 0.1, Amin = 0.001 with R/(1.29λ) = 2 and Δx = 3.5R for the anisotropic case. The movie depicts system dynamics over 1200 doubling times; the anisotropic simulation is pinned after approximately 160 doubling times. Snapshots of these simulations were used to make Figure 1.