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A Bio-Economic Assessment of the West Coast Deep-Sea Hake Fishery with Referede to the Optimal Utitlization and Management of the Resource. OceanDocs
Hutton, T.; Sumaila, U.R..
The cooperative versus non-cooperative management of the South African west coast hake stock is explored using game theoretic modelling in conjunction with an age-structured model. The age-structured model is used to produce a physical flow account for input into national resource accounts. Between 1989 and 1998, the average catch of hake on the west coast was 92000 tons, most of which was harvested by the demersal trawl sector. The physical flow account indicates that the conservative re-building management strategy pursued for the fishery over the same time period mentioned above, has resulted in a 29% increase in the demersal trawl catch over the last decade. We simulated the effects of alternative quota restrictions on two fishing sectors (the...
Tipo: Working Paper Palavras-chave: Hake fisheries; Economic analysis.
Ano: 2000 URL: http://hdl.handle.net/1834/873
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Atlantis Ecosystem Model Summit: Report from a workshop ArchiMer
Weijerman, M.; Link, J. S.; Fulton, E. A.; Olsen, E.; Townsend, H.; Gaichas, S.; Hansend, C.; Skern-mauritzen, M.; Kaplan, I. C.; Gamble, R.; Fay, G.; Savina, Marie; Ainsworth, C.; Van Putten, I.; Gorton, R.; Brainard, R.; Larsen, K.; Hutton, T..
Ecosystem models can be used to understand the cumulative impacts of human pressures and environmental drivers on ecosystem structure and dynamics. Predictive modeling can show how management can influence those dynamics and structures and the ecosystem services these systems provide. Many nations and intergovernmental organizations are advocating for ecosystem-based management, often with a specific emphasis to evaluate various future management strategies. Atlantis is an end-to-end ecosystem model that is well suited for this task and has so far been developed for more than 30 diverse marine ecosystems worldwide. To provide a better understanding of the current modeling work, elicit wider interest, and foster collaboration within the Atlantis community,...
Tipo: Text Palavras-chave: Ecosystem-based models; Atlantis Summit; Management; Strategy evaluation; Meeting report.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00335/44605/44471.pdf
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Government-industry co-management arrangements within the south african deep-sea hake fishery OceanDocs
Hutton, T.; Raakjaer Nielsen, J.; Mayekiso, M..
As part of a global comparative study of user-participation in fisheries management, a neo-institutional economic framework analysis is applied to the South African Deep-sea Hake Fishery to evaluate past and present co-management arrangements. It is postulated that the comprehensive partnerships that exist will struggle to remain legitimate and functional during major changes in the access-rights regime. The government is redistributing quota to new entrants and previously-disadvantaged South Africans, resulting in competition between the established demersal trawl fleet and a new longline sector for access rights. The established industry is currently undertaking restructuring via investment schemes, joint ventures and share agreements. The relationship...
Tipo: Proceedings Paper Palavras-chave: Hake fisheries; Capture fishery economics.
Ano: 1999 URL: http://hdl.handle.net/1834/720
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