Abstract
This paper is concerned with the steady state problem of a predator–prey cross-diffusion system with herd effect, Allee effect and a protection zone. Some sufficient conditions for the existence of positive steady state solutions are given. Our proof is based on the local and global bifurcation theory and some a priori estimates. Some limiting behavior of positive steady states with respect to the Allee effect constant (α) or the diffusion coefficient (d), are discussed.
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