کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4499772 | 1319051 | 2006 | 10 صفحه PDF | دانلود رایگان |
A reaction–diffusion model describing the evolutionary dynamics of a food-web was constructed. In this model, predator–prey relationships among organisms were determined by their position in a two-dimensional phenotype space defined by two traits: as prey and as predator. The mutation process is expressed with a diffusion process of biomass in the phenotype space. Numerical simulation of this model showed co-evolutionary dynamics of isolated phenotypic clusters, including various types of evolutionary branching, which were classified into branching as prey, branching as predators, and co-evolutionary branching of both prey and predators. A complex food-web develops with recursive evolutionary branching from a single phenotypic cluster. Biodiversity peaks at the medium strength of the predator–prey interaction, where the food-web is maintained at medium biomass by a balanced frequency between evolutionary branching and extinction.
Journal: Journal of Theoretical Biology - Volume 238, Issue 1, 7 January 2006, Pages 1–10