The Effects of Resource Limitation on a Predator-Prey Model with Control Measures as Nonlinear Pulses

Figure 2

Contour plots of 𝑅¹₀ and 𝑅²₀: (a) plot of contours of 𝑅¹₀ versus 𝑝₂^max and 𝜃₂; (b) plot of contours of 𝑅²₀ versus 𝑇 and 𝑝₁^max; (c) plot of contours of 𝑅²₀ versus 𝑝₂^max and 𝜃₂; (d) plot of contours of 𝑅¹₀ versus 𝑝₂^max and 𝑝₁^max. All other parameters are fixed as follows: 𝑎=0.5, 𝑏=0.8, 𝑐=1.6, 𝜔=1, 𝜇=0.4, 𝑑=0.37, 𝜎=0.78, 𝑝₁^max=0.95, 𝑝₂^max=0.2, 𝜃₁=1, 𝜃₂=2, 𝑇=6.5(𝐴), and 𝑇=12(𝐶−𝐷).

(a)

(b)

(c)

(d)