title: Species coexistence of communities with intraguild predation: the role of refuges used by the resource and the intraguild prey.
abstract: In this paper, we develop a three-species intraguild predation model which incorporates refuges used by the resource and the intraguild prey, and focus on the effects of refuges on the three species coexistence. The invasion condition and parameter region for coexistence are obtained using invasion analysis. The new invasion condition requires that all boundary states with one missing species can be invaded by the missing species. Numerical simulations show that refuges have a major influence on species coexistence of intraguild predation system, and the results strongly depend on the types of refuges introduced into the model. Our study also shows that prey's refuges are detrimental to species coexistence except the resource using refuges. In contrast to previous research, we find that spatial structure may play an important role in effects of refuges on species coexistence of intraguild predation systems. Our results may shed new light on understanding the mechanisms and the persistence of multi-species predators-prey system.
authors.affiliation: Institute of Applied Mathematics, School of Mathematics and Information Sciences, Henan University, Kaifeng 475004, People's Republic of China. liuzhiguang@henu.edu.cn
authors.forename: Zhiguang
authors.initials: Z
authors.lastname: Liu
authors.forename: Fengpan
authors.initials: F
authors.lastname: Zhang
mesh_terms: D000818:Animals; D058448:Biota / Q000502:physiology*; D003198:Computer Simulation; D020387:Food Chain; D008954:Models, Biological; D013037:Spatial Behavior / Q000502:physiology*; D013045:Species Specificity
keywords: Coexistence; Intraguild predation; Invasion analysis; Refuges