Optimal management scenarios for the artisanal fisheries in the ecosystem of La Paz Bay, Baja California Sur, Mexico
Arreguín-Sánchez, F.; Hernández-Herrera, A.; Ramírez-Rodríguez, M.; Pérez-España, H. (2004). Optimal management scenarios for the artisanal fisheries in the ecosystem of La Paz Bay, Baja California Sur, Mexico. Ecol. Model. 172(2-4): 373-382 In: Ecological Modelling. Elsevier: Amsterdam; Lausanne; New York; Oxford; Shannon; Tokyo. ISSN 0304-3800; e-ISSN 1872-7026, more Also appears in:Christensen, V.; Maclean, J.L. (Ed.) (2004). Placing fisheries in their ecosystem context. Ecological Modelling, 172(2-4). Elsevier: Amsterdam. 103-440 pp., more |   |
| Keywords | Fishing > Artisanal fishing
Harvesting
Optimisation > Optimization
Optimization
Techniques > Biological techniques > Techniques > Quantitative techniques > Optimization
Marine/Coastal |
| Authors | | Top | - Arreguín-Sánchez, F.
- Hernández-Herrera, A.
- Ramírez-Rodríguez, M.
- Pérez-España, H.
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| Abstract | In La Paz Bay, two artisanal fisheries operate, one based on hook-and-line, targeting snappers and groupers, and the othermainly based on gillnets, targeting species such as tilefish and haemulids. A shrimp fishery, which is not permitted to expand, alsooperates. We analyzed various harvesting strategies with the Ecopath with Ecosim modelling software, using catch-and-effortdata for target species to fit simulated biomasses. Optimal harvesting strategies for artisanal fisheries were explored using social,economic and ecological criteria. Several harvesting strategies were simulated: continuation of the current state of the fisheries,optimizing economic and social (employment) criteria, using maximum sustainable yield (MSY) as a goal of management, andoptimization of an ecological criterion when necessary. Optimization of current fisheries and economic and social criteria, and theMSY resulted in depletion of some stocks and in no-realistic increases in fishing effort. Combinations of economic-ecological,social-ecological and economic-social-ecological criteria did not result in stock depletion. However, some of these scenariosresulted in unrealistic choices, especially large increases in gillnet fishing effort. Among the reasonable choices, a strategy ofincreasing the hook-and-line fishery effort by a factor of 1.5 and the gillnet effort by a factor of 2.8, appeared to be potentiallyapplicable, to increase efficiency of the artisanal fisheries. |
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