Fig. 7. Trajectories starting from non viable states controlled by Eq. 17 for (a) an irreversible lake (b = 0.4), and (b) an hysteretic lake (b = 0.8). (L_min = 0.1, L_max = 1, P_max = 0.5 and VL_max = 0.1.) Time is indicated by open circles drawn along the trajectory at regular time intervals. The arrows show the direction of the trajectories. The trajectories that reach Viab(K) before time T are drawn as solid lines, the rest as dashed lines. In the case of the hysteretic lake (b), all the trajectories reach Viab(K), whereas most of them are captured by a high-P steady state in the case of the irreversible lake (a).