Nonautonomous Food-Limited Fishery Model With Adaptive Harvesting

Details Nonautonomous Food-Limited Fishery Model With Adaptive Harvesting Nonautonomous Food-Limited Fishery Model With Adaptive Harvesting

2010-06-28

arxiv.org/abs/1006.5431v1

Mathematics

Dynamical Systems

11 pages 7 figures

Scientific paper

We will introduce the biological motivation of the $\gamma$- food-limited model with variable parameters. New criteria are established for the existence and global stability of positive periodic solutions. To prove the existence of steady-state solutions, we used the upper-lower solution method where the existence of at least one positive periodic solution is obtained by constructing a pair of upper and lower solutions and application of the Friedreichs Theorem. Numerical simulations illustrate effects of periodic variation in the values of the basic biological and environmental parameters and how the adaptive harvesting strategies affect fishing stocks.

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