This paper deals with fishery management in the face of the ecological and economic effects of global warming. To achieve this, a dynamic bioeconomic model and model-based scenarios are considered, in which the stock's growth function depends on the sea surface temperature. The model is empirically calibrated for the French Guiana shrimp fishery using time series collected over the period 1993–2009. Three fishing effort strategies are then compared under two contrasted IPCC climate scenarios (RCP 8.5 and RCP 2.6). A first harvesting strategy maintains the Status Quo in terms of fishing effort. A more ecologically-oriented strategy based on the closure of the fishery is also considered. A third strategy, which relates to Maximum Economic Yield (MEY), is based on the optimisation of the net present value derived from fishing. The results first show that ‘Status Quo’ fishing intensity combined with global warming leads to the collapse of the fishery in the long run. Secondly, it turns out that the Closure strategy preserves stock viability especially under the optimistic climate scenario. Thirdly, the MEY strategy makes it possible to satisfy bioeconomic performances requirements with positive stock and profit, once again, especially under the optimistic warming scenario. Consequently, MEY emerges as a relevant bioeconomic strategy in terms of adaptation to climate change but only in connection with climate change mitigation.
This paper deals with fishery management in the face of the ecological and economic effects of global warming. To achieve this, a dynamic bioeconomic model and model-based scenarios are considered, in which the stock's growth function depends on the sea surface temperature. The model is empirically calibrated for the French Guiana shrimp fishery using time series collected over the period 1993–2009. Three fishing effort strategies are then compared under two contrasted IPCC climate scenarios (RCP 8.5 and RCP 2.6). A first harvesting strategy maintains the Status Quo in terms of fishing effort. A more ecologically-oriented strategy based on the closure of the fishery is also considered. A third strategy, which relates to Maximum Economic Yield (MEY), is based on the optimisation of the net present value derived from fishing. The results first show that ‘Status Quo’ fishing intensity combined with global warming leads to the collapse of the fishery in the long run. Secondly, it turns out that the Closure strategy preserves stock viability especially under the optimistic climate scenario. Thirdly, the MEY strategy makes it possible to satisfy bioeconomic performances requirements with positive stock and profit, once again, especially under the optimistic warming scenario. Consequently, MEY emerges as a relevant bioeconomic strategy in terms of adaptation to climate change but only in connection with climate change mitigation.
Titre
en
Maximum Economic Yield Fishery Management in the Face of Global Warming
Auteur(s)
Bassirou Diop1
, Nicolas Sanz1
, Yves Jamont Junior Duplan2
, El Hadji Mama Guene3
, Fabian Blanchard1
, Jean-Christophe Pereau4
, Luc Doyen4
1
LEEISA -
Laboratoire Ecologie, Evolution, Interactions des Systèmes amazoniens
( 456753 )
- Centre de recherche de Montabo IRD 275 route de Montabo
BP 70 620 97 334 Cayenne Cedex
Tel. (+594) 05 94 29 20 03
- Guyane française
Institut Français de Recherche pour l'Exploitation de la Mer ( 300022 )
;
Université de Guyane ( 424370 )
;
Centre National de la Recherche Scientifique UAR3456 / USR3456 ( 441569 )
2
UG -
Université de Guyane
( 424370 )
- Campus de Troubiran - BP 20792- 97337 Cayenne Cedex - Guyane
- Guyane française
3
IPR -
Institut de Physique de Rennes
( 57111 )
- Bâtiment 11A , B, C, E – 10B
263 av. Général Leclerc
35042 Rennes cedex FRANCE
- France
Université de Rennes ( 105160 )
;
Centre National de la Recherche Scientifique UMR6251 ( 441569 )
4
GREThA -
Groupe de Recherche en Economie Théorique et Appliquée
( 27589 )
- Avenue Léon Duguit 33608 PESSAC
- France
Université de Bordeaux ( 259761 )
;
Centre National de la Recherche Scientifique UMR5113 ( 441569 )
Date de publication électronique
2018-08-07
Nom de la revue
Ecological Economics
(ISSN : 0921-8009, ISSN électronique : 1873-6106)
Publié par Elsevier
Revue non référencée dans Sherpa-Romeo
Bassirou Diop, Nicolas Sanz, Yves Jamont Junior Duplan, El Hadji Mama Guene, Fabian Blanchard, et al.. Maximum Economic Yield Fishery Management in the Face of Global Warming. Ecological Economics, 2018, 154, pp.52 - 61. ⟨10.1016/j.ecolecon.2018.07.027⟩. ⟨hal-01856160⟩