title: A mathematical model of facultative mutualism with populations interacting in a food chain.
abstract: Facultative mutualism with populations interacting in a food chain is modeled by a system of four autonomous ordinary differential equations. Two cases are considered: mutualism with the prey and mutualism with the first predator. In both cases persistence and extinction criteria are developed in terms of the invariant flows on the boundaries.
authors.forename: R
authors.initials: R
authors.lastname: Kumar
authors.forename: H I
authors.initials: HI
authors.lastname: Freedman
mesh_terms: D000818:Animals; D004463:Ecology; D008433:Mathematics; D008954:Models, Biological; D011157:Population Dynamics; D011235:Predatory Behavior