title: [Mathematical model of a two level ecosystem].
abstract: The model which consists of two trophical levels is developed. The species here are connected by "pray--predator" relationship. If one supposes rather narrow specialisation of predator and introduces the "ecological space", the model which was preliminary recorded as a system of common differential equations of great dimension can be modified to the system of two non-linear equations in partial derivatives. Linear approach was investigated analytically, the previous nonlinear problem was calculated on a computer. The most interesting result here is an appearance of space--time oscillations in the system, which can be regarded as the first stages of ecological succession.
mesh_terms: D000818:Animals; D003201:Computers; D004463:Ecology; D008433:Mathematics; D008954:Models, Biological; D011235:Predatory Behavior; D013029:Space-Time Clustering
vernacular_title: Matematicheskaia model' ékosistemy iz dvukh urovneĭ.