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Simulating the Effect of Seasonal Fishing Moratorium on the Pearl River Estuary Coastal Ecosystem for Fisheries Strategies Exploration

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Abstract
  • The coastal ecosystem of the Pearl River Estuary (PRE) has been overfished and received a high level of combined pollution in the past decades. The fisheries stock assessments have shown a declining population and have led to a number of management measures, including fishing moratorium. This study evaluated the effect of the fishing moratorium on the sustainability of PRE fisheries through an ecosystem approach. Then, a series of 100 years dynamics simulations were examined in light of five scenarios on the basis of the 1998 Ecopath model to explore better strategies on the fishing moratorium. S0: the present fishing moratorium continuation, S1: No fishing moratorium executed, S2: extending the duration of the moratorium (i.e., 1 June to 1 September), S3: banning all fishing operations in the moratorium season, S4: No fishing moratorium executed but reducing the fishing effort of all fishing gears by 50%. The results show that the fishing moratorium did benefit the ecosystem protection. Comparative analysis among different scenarios indicates that the largest increase (28.0%) in the fish stocks could be obtained in S4. Moreover, it incurred an increase (43%) in total landings. There seemed to be no differences between S0 and S3.
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  • Duan, Lijie, Shiyu Li, Yu Liu, Ying Wang, Pierre Failler, Villy Christensen and Jacques Moreau. 2010. Simulating the Effect of Seasonal Fishing Moratorium on the Pearl River Estuary Coastal Ecosystem for Fisheries Strategies Exploration. 12 pages. In: Proceedings of the Fifteenth Biennial Conference of the International Institute of Fisheries Economics & Trade, July 13-16, 2010, Montpellier, France: Economics of Fish Resources and Aquatic Ecosystems: Balancing Uses, Balancing Costs. Compiled by Ann L. Shriver. International Institute of Fisheries Economics & Trade, Corvallis, Oregon, USA, 2010.
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  • US National Oceanic and Atmospheric Administration (NOAA) Fisheries Division, Agence Française de Développement, Ministère de l’Enseignement Supérieur et de la Recherche, Ministère de L’Alimentation de L’Agriculture et de la Pêche, Ministère de l’Énergie, du Développement Durable et de la Mer, La Région Languedoc Rouslilon, Département Hérault, Montpellier Agglomèration, The Department of Fisheries and Oceans, Canada, and AquaFish Collaborative Research Support Program (CRSP).
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