Almost Periodic Solution For A Food Chain Model With Mixed Functional Responses On Time Scales

In this paper, using the time scale calculus theory, we first discuss the perma-nence of a food chain model with ratio-dependent and Bedding-DeAngelis functional responses on time scales. Based on the permanence result, by the Lyapunov func-tional method, we establish sufficient conditions for the existence and uniformly asymptotical stability of almost periodic solution of the considered model.