  Models relating to the Species-Area curve are usually defined at the species
level, and concerned only with ecological timescales. We examine an
individual-based model of co-evolution on a spatial lattice based on the
Tangled Nature model, and show that reproduction, mutation and dispersion by
diffusion in an interacting system produces power-law Species-Area Relations as
observed in ecological measurements at medium scales. We find that
co-evolutionary habitats form, allowing high diversity levels in a spatially
homogenous system, and these are maintained for exponentially increasing time
when increasing system size.
