A multi-region nonlinear age–size structured fish population model
Résumé
The goal of this paper is to present a generic multi-region nonlinear age–size structured fish pop- ulation model, and to assess its mathematical well-posedness. An initial–boundary-value problem is formulated. Existence and uniqueness of a positive weak solution is proved. Eventually, a comparison result is derived: the population of all regions decreases as the mortality rate increases in at least one region.
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