Biological Invasion and Coexistence in Intraguild Predation

Figure 1

Regions of potential coexistence for the local reactive kinetic of (2a)–(2c). In the region labeled “IGprey” (on the right side of the line marked “(1)” and below the line marked “(3)”), the IGprey extirpates the IGpredator, whereas in the region labeled “IGpredator" (in the right of the line marked “(1)” and above the line marked “(2)”), the IGpredator extirpates the IGprey. Region labeled “either” is that in which coexistence is not possible, but the species that persists depends on initial conditions. Region labeled “Coexist” is the intersection of the regions labeled “IGprey” and “IGpredator.” Parameter values were chosen to be system appropriate: 𝜅₁=0.7,𝛼=2,ℎ=0.5,𝑒₁=0.1, and 𝑒₂=0.21.