Stability and bifurcation analysis of a discrete predator-prey system of Ricker type with refuge effect

Abstract

The refuge effect is critical in ecosystems for stabilizing predator-prey interactions. The purpose of this research was to investigate the complexities of a discrete-time predator-prey system with a refuge effect. The analysis investigated the presence and stability of fixed points, as well as period-doubling and Neimark-Sacker (NS) bifurcations. The bifurcating and fluctuating behavior of the system was controlled via feedback and hybrid control methods. In addition, numerical simulations were performed as evidence to back up our theoretical findings. According to our findings, maintaining an optimal level of refuge availability was critical for predator and prey population cohabitation and stability.

Keywords

• predator-prey system
• ricker
• refuge
• stability
• period-doubling bifurcation
• neimark-sacker (ns) bifurcation
• chaos control