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Defining viable recovery paths toward sustainable fisheries

  • Martinet, Vincent
  • Thebaud, Olivier
  • Doyen, Luc

Cet article développe une analyse formelle des processus de restauration des pêcheries, depuis des situations de crise vers des niveaux d'exploitation soutenables ciblés. Le cadre théorique utilisé est la théorie de la viabilité. Les auteurs définissent la soutenabilité par un ensemble de contraintes économiques, écologiques et sociales qu'une pêcherie viable doit satisfaire. Les contraintes biologiques sont basées sur la définition d'une biomasse minimale du stock de ressource à préserver. Les contraintes économiques sont liées à la rentabilité des navires de la pêcherie. Les contraintes sociales font référence au maintien d'une flottille importante pour garantir l'emploi, et à une vitesse maximale d'ajustement de cette taille de flottille. En contrôlant l'ajustement de la taille de la flottille et le niveau d'effort de pêche, ils identifient les états du système bioéconomique pour lesquels une exploitation soutenable est possible, au sens où toutes les contraintes définies précédemment sont satisfaites à toute période. De tels états favorables sont appelés états viables. Ils examinent ensuite des phases de transition possibles depuis des situations de crises vers ces états viables. Ils caractérisent les sentiers de restauration par leur temps de crise, qui est défini comme le nombre de périodes pendant lesquelles les contraintes ne sont pas respectées. Cette approche est appliquée à la pêcherie langoustinière du golfe de Gascogne. Le sentier de transition identifié par l'approche de viabilité est comparé à la trajectoire historique, à un scénario d'accès libre, et à un scénario d'optimalité économique.

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Article provided by Elsevier in its journal Ecological Economics.

Volume (Year): 64 (2007)
Issue (Month): 2 (December)
Pages: 411-422

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Handle: RePEc:eee:ecolec:v:64:y:2007:i:2:p:411-422
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  1. Vincent Martinet & Luc Doyen, 2007. "Sustainability of an economy with an exhaustible resource: A viable control approach," Working Papers 22177, Institut National de la Recherche Agronomique, France.
  2. Clark, Colin W. & Munro, Gordon R., 1975. "The economics of fishing and modern capital theory: A simplified approach," Journal of Environmental Economics and Management, Elsevier, vol. 2(2), pages 92-106, December.
  3. Smith, Vernon L, 1969. "On Models of Commercial Fishing," Journal of Political Economy, University of Chicago Press, vol. 77(2), pages 181-98, March/Apr.
  4. Christophe Béné & Luc Doyen, 2000. "Storage and Viability of a Fishery with Resource and Market Dephased Seasonalities," Environmental & Resource Economics, European Association of Environmental and Resource Economists, vol. 15(1), pages 1-26, January.
  5. Trond Bjorndal & Jon M. Conrad, 1987. "The Dynamics of an Open Access Fishery," Canadian Journal of Economics, Canadian Economics Association, vol. 20(1), pages 74-85, February.
  6. Homans, Frances R. & Wilen, James E., 1997. "A Model of Regulated Open Access Resource Use," Journal of Environmental Economics and Management, Elsevier, vol. 32(1), pages 1-21, January.
  7. H. Scott Gordon, 1954. "The Economic Theory of a Common-Property Resource: The Fishery," Journal of Political Economy, University of Chicago Press, vol. 62, pages 124.
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