Optimal control of resources for species survival

Idriss Mazari (1) , Grégoire Nadin (1) , Yannick Privat (2)

1 SU - Sorbonne Université
2 IRMA - Institut de Recherche Mathématique Avancée

Consider a species whose population density solves the steady diffusive logistic equation in a heterogeneous environment modeled with the help of a spatially non constant coefficient standing for a resources distribution in a given box. We look at maximizing the total population size with respect to resources distribution, under some biologically relevant constraints. Assuming that the diffusion rate of the species is large enough, we prove that any optimal configuration is the characteristic function of a domain standing for the resources location. Moreover, we highlight that optimal configurations look {\it concentrated} whenever the diffusion rate is large enough. In the one-dimensional case, this problem is deeply analyzed, and for large diffusion rates, all optimal configurations are exhibited.

Domaines: Equations aux dérivées partielles [math.AP]; Optimisation et contrôle [math.OC]

Idriss Mazari, Grégoire Nadin, Yannick Privat. Optimal control of resources for species survival. 89th GAMM Annual Meeting, Mar 2018, munich, Germany. ⟨hal-01846136⟩