title: Persistence in periodic and almost periodic Lotka-Volterra systems.
abstract: It is shown that a strongly self-regulating (or resource limited) Lotka-Volterra population system can "persist" in a periodic or almost periodic environment if and only if the system tracks the environmental variations.
mesh_terms: D000818:Animals; D003163:Competitive Behavior; D004463:Ecology; D008433:Mathematics; D008954:Models, Biological; D010507:Periodicity