Properties in Stage-Structured Population Models with Deterministic and Stochastic Resource Growth

Figure 11

Impact on size structure and biomass of logistic growth rate without starvation (a, c) and with starvation (b, d) at steady state w.r.t. harvesting rate. The grey trajectories show the impact on size structure and biomass from different simulations for the stochastic case. The yellow curve represents the mean value of the simulations. The light blue curves represent the interval of standard deviation (68%). The black curve represents the impact on size structure and biomass for the deterministic case. Equations (17) and (18) are used to derive the above graphs for the impact on size structure and biomass, respectively.

(a)

(b)

(c)

(d)