Research Article

Neimark-Sacker Bifurcation and Chaos Control in a Fractional-Order Plant-Herbivore Model

Figure 4

Phase portraits of system (16) with different values of and taking , , , , , , , , , , , , and .
(a) Phase portrait of system (16) for
(b) Phase portrait of system (16) for
(c) Phase portrait of system (16) for
(d) Phase portrait of system (16) for