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dc.contributor.authorObeng, Victor
dc.date.accessioned2006-10-05T11:33:03Z
dc.date.available2006-10-05T11:33:03Z
dc.date.issued2003-06-02
dc.description.abstractThe Ghanaian tuna fishery is a baitboat and purse seine fishery. Three main species of tuna are caught namely, Skipjack, Bigeye and Yellowfin. A detailed and comprehensive set of catch and effort data for the tuna fisheries has been obtained for the period 1980-2001. Harvest functions have been designed and estimated. By maximising the loglikelihood function by numerical methods, parameter estimates and performance indicators of the different models were obtained. The best result was obtained for a harvest model allowing inclusion of a time trend parameter. For this model the stockoutput elasticity is assumed to be 1, the effort-output elasticity is estimated at 0.849, and the technological change at about 3.6% annual increase in productivity. Technical – Economic interactions among the species have been analysed. Different periods where chosen for each period, cross – elasticity of supply calculated between the species. The result indicated a mixed significance, which gives room for the existence of technical – economic interactions among the species over the years, considered. This suggests that single species management may be inappropriate for the tuna fishery.en
dc.format.extent462619 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/10037/306
dc.identifier.urnURN:NBN:no-uit_munin_152
dc.language.isoengen
dc.publisherUniversitetet i Tromsøen
dc.publisherUniversity of Tromsøen
dc.rights.accessRightsopenAccess
dc.rights.holderCopyright 2003 The Author(s)
dc.subjectVDP::Samfunnsvitenskap: 200::Økonomi: 210::Samfunnsøkonomi: 212en
dc.titleTowards an appropriate economic management regime of tuna fisheries in Ghanaen
dc.typeMaster thesisen
dc.typeMastergradsoppgaveen


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