title: Competition promotes the persistence of populations in ecosystems.
abstract: Competition is one of the most common form in ecological systems, which plays important roles in population dynamics. However, the influences of competition on persistence of populations remain unclear when space effect is included. In this paper, we investigated a predator-prey model with competition and spatial diffusion. Based on pattern formations and time series of populations, we found that competitions induce the persistence of populations, which denies competitive exclusion principle. Moreover, we testify the robustness of these effects. Our results also suggest that space may lead to the emergence of new phenomenon in ecosystems.
authors.affiliation: College of Science, Shihezi University, Shihezi, Xinjiang 832003, P. R. China.
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.affiliation: Department of Applied Mathematics, Illinois Institute of Technology, Chicago, IL 60616, USA.|Center for Mathematical Sciences, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
authors.forename: Jinqiao
authors.initials: J
authors.lastname: Duan
authors.affiliation: College of Life Science, Shihezi University, Shihezi, Xinjiang 832003, P. R. China.
authors.forename: Tong
authors.initials: T
authors.lastname: Liu
mesh_terms: D000818:Animals; D003163:Competitive Behavior; D017753:Ecosystem; D053476:Extinction, Biological; D008954:Models, Biological; D011157:Population Dynamics; D011235:Predatory Behavior; D013997:Time Factors