Turing-Hopf bifurcation in a diffusive mussel-algae model with time-fractional-order derivative

摘要

In this paper, we consider a time fractional-order derivative for a diffusive mussel-algae model. The ex-istence of pattern formation was the subject of interest of many previous research works in the case of the diffusive mussel-algae model. Examples include the Turing instability, Hopf bifurcation, Turing-Hopf bifurcation, and others. The presence of the time-fractional-order derivative never been investigated in this model. Next to it ecological relevant, it can generate some important patterns. One of these patterns is produced by the presence of the Turing-Hopf bifurcation. Therefore, our main interest is to analyze the effect of the time fractional-order derivative on the spatiotemporal behavior of the solution, which never been achieved for the mussel-algae model. Besides, Turing-Hopf was studied exclusively on the classical reaction-diffusion systems, where it was also considered for the diffusive mussel-algae model. Thus, our paper puts the fist steps on proving the existence of this type of codimension bifurcation on the diffusive systems with time fractional-order-derivative systems. Further, a suitable numerical simulations are used for confirming the theoretical obtained results. (c) 2020 Elsevier Ltd. All rights reserved.