Bifurcations of a Ratio-Dependent Holling-Tanner System with Refuge and Constant Harvesting

Figure 2

The figure of prey 𝑥 at equilibria versus 𝑅 when 𝑎=1.6, 𝛽=2, 𝑚=0.1309, and ℎ=0.13, which displays a backward bifurcation at 𝑅=1.