How to model the local interaction in the predator-prey system at slow diffusion in a heterogeneous environment?

We examine the nonlinear reaction-diffusion-advection equations to modeling of the predator-prey system under heterogeneous carrying capacity of the prey, and Holling type II functional response. When advection and diffusion fluxes are absent or small, we detect the discrepancy between the resource (carrying capacity) and species distributions. The large diffusion eliminates this effect. We propose a modification of the functional response coefficients to provide the correlation between species distribution and resource in both cases. The numerical simulation of several models both under small and moderate advection-diffusion fluxes is carried out.

Automated summary

In this study, we model the predator-prey system with heterogeneous carrying capacity of the prey and Holling type II functional response using nonlinear reaction-diffusion-advection equations. We investigate the impact of advection and diffusion fluxes on the correlation between resource and species distributions. By modifying the functional response coefficients, we improve the accuracy of the model. Numerical simulations confirm the feasibility of the proposed models under small and moderate advection-diffusion fluxes.