Figure 3
From: Grazing enhances species diversity in grassland communities
The effects of the animal density Iy on the number of surviving species under various basal grazing intensities (G) and natural mortalities (di). (a–c) The grazing intensity of a species decreases as the fecundity decreases, i.e., \({g}_{i}=G+G^{\prime} (20-i)\) and Bi = B−0.002(i-1) for i = 1, 2, …, s), indicating a trade-off between the birth rate and grazing intensity of a species. The lattice size is 100 × 100. (a–c) The grazing intensity is 0.15. The dispersal distance is P = 40. The initial species density is Ii = 0.03 (same for all species). (d–f) The density of grazer cells is Iy  = 0.4. Error bars indicate the standard deviations.
