Unité mixte de recherche 7235

Recovering viable fisheries

Vincent Martinet, Olivier Thebaud, Luc Doyen

[en]This paper develops a formal analysis of the recovery processes for a fishery, from undesired to desired levels of sustainable exploitation, using the theoretical framework of viability control. We define sustainability in terms of biological, economic and social constraints which need to be met for a viable fishery to exist. Biological constraints are based on the definition of a minimal resource stock to be preserved. Economic constraints relate to the existence of a minimum profit per vessel. Social constraints refer to the maintenance of a minimum size of the fleet, and to the maximum speed at which fleet adjustment can take place. Using fleet size and fishing effort per vessel as control variables, we identify the states of this bioeconomic system for which sustainable exploitation is possible, i.e. for which all constraints are dynamically met. Such favorable states are called viable states. We then examine possible transition phases, from non-viable to viable states. We characterize recovery paths, wih respect to the economic and social costs of limiting catches during the recovery period, and to the duration of this transition period. Sensitivity of each of the constraints to transition costs and time are analyzed. The analysis is applied to a single stock fishery; preliminary results of an empirical application to the bay of Biscay nephrops fishery are presented.[/en]


lundi 25 septembre 2023

Law, Institutions and Economics in Nanterre (LIEN)

Xavier Lambin (ESSEC)

Less than meets the eye: simultaneous experiments as a source of algorithmic seeming collusion

mardi 26 septembre 2023

Recherche et Economie et Socioéconomie Politique, des Institutions et des Régulations (RESPIR)

André Orléan (EHESS)

ATTENTION : exceptionnellement, le séminaire aura lieu en G 301-302 et non en G614b

Valeur et monnaie: une approche institutionnaliste

jeudi 28 septembre 2023


Philippe POINSOT

Quels sont les gagnants et les perdants des réformes de la fiscalité locale en France ? Une évaluation de la suppression de la CVAE

jeudi 28 septembre 2023

Développement Durable Environnement et Energie (DDEE)

Romain Espinosa (CIRED)

Salle 614B de 11h – 12h

The Animal Welfare Levy

jeudi 5 octobre 2023

Groupe de travail Economie Comportementale

Aurélie Bonein (Université de Rennes 1, CREM)


jeudi 5 octobre 2023


Himani Pasricha

The impact of climate variability on internal migration in Thailand.

dimanche 8 octobre 2023

Professeurs invités

Fayçal Hamdi

dimanche 8 octobre 2023

Professeurs invités

Tobias Kretschmmer

Inscription aux Newsletters