Fig. 12. Level curves of the resilience for an hysteretic lake (b = 0.8) ( L_min = 0.1, L_max = 1, P_max = 0.5, and VL_max = 0.1). The cost functions used to evaluate resilience are γ in the first row and λ in the second. The anticipated disturbance is a sudden increase in the concentration of phosphorus. Its maximal intensity is α = 0.15. The resilience of two states that belong to the same solid line are equal. The subset of Viab(K) where resilience is infinite is shaded light gray.