Dynamical Models of Interactions between Herds Forage and Water Resources in Sahelian Region

Figure 6

Phase portrait of the herd’s animals and forage resources of System (1) when 𝑟=500 kgDM/ha, 𝑒=0.05/day, 𝑎=0.013/ha, 𝐾=8--30 kgDM/ha, 𝑞=0.4/day, and 𝛾=0.07/day. Illustration of the stability of the unique coexisting equilibrium 𝐸₂=(𝑅^∗,𝐻^∗) for four initial conditions.