On Predation–Commensalism Processes as Models of Bi-stability and Constructive Role of Systemic Extinctions
Résumé
We propose a mathematical model for a class of predator-prey systems more complex than the usual one, involving a commensalism effect consisting in an influence of the predator on the sustainability of the prey. This effect induces interesting new features, including bi-stability (two attractors with disjoint attraction basins). The question of the possibility of reaching a certain attractor starting from initial conditions with a small population of predators, which presents an interest from the vewpoint of the onset of the predator in evolution, is addressed. We propose two possibilities: the classical one involving adapted conditions in the far past and a new (up to our knowledge) one using biodiversity, specifically the presence of another predator which operates as a starter, being displaced in the sequel.
Fichier principal
Sanchez-Palencia et Françoise - 2021 - On Predation–Commensalism Processes as Models of B.pdf (580.25 Ko)
Télécharger le fichier
Origine | Fichiers produits par l'(les) auteur(s) |
---|