 Where the immigration rate \(I\) and extinction rate \(E\) cross is the species equilibrium \(S^*\) (Figure 3B). Moreover, the island whose immigration rate is \(I_\text{near}\) and whose extinction rate is \(E_\text{large}\) has the largest species equilibrium. The one with the smallest is the one with \(I_\text{far}\) and \(E_\text{small}\) (Figure 3A).