tailieunhanh - Cutting the Cake in a Shared Fishery with a Minimally Managed Non Commercial Sector

Around the world, many fisheries are shared fisheries in the sense that a common fish stock is accessed by both commercial and non-commercial fishers. Non-commercial fishers can include recreational fishers, or customary fishers, or both. A prevalent problem in these fisheries is competition between commercial and non-commercial fishers for access to a resource that is subject to increasing utilisation pressure. This paper explores some of the issues that managers who are charged with the task of maximizing the value to society from multiple uses of a sustainable catch need to consider when allocating fish stocks between the various competing interests. The analysis of the issues is set. | ERA Economic Research Associates Pty Ltd Cutting the Cake in a Shared Fishery with a Minimally Managed Non Commercial Sector Report for the New Zealand Ministry of Fisheries April 2010 Economic Research Associates Pty Ltd 90 009 383 173 97 Broadway Nedlands WA 6009 Phone 61 8 9386 2464 Email era@ ERA Economic Research Associates Pty Ltd Contents EXECUTIVE SUMMARY III INTRODUCTION 7 The management challenge 7 The New Zealand framework 8 A review of the economic approach to catch allocation 9 The standard economic model 9 Key Assumptions for the Resource Allocation Framework 10 Problems with the standard economic model 11 Total Allowable Catch 11 Economic value 12 ANALYTICAL MODEL OF SHARED FISHERIES 14 The relationship between sustainable non-commercial catch sustainable commercial catch and stock biomass in a shared fishery 14 Effect of alternative catch allocations on the total economic value from a shared fishery 19 Summation 25 CASE STUDIES 27 The SNA 1 case study 27 The KAH 1 case study 34 SUMMARY AND CONCLUSIONS 43 REFERENCES 45 Economic Research Associates 03 08 2010 Allocation of Fish Stocks ii ERA Economic Research Associates Pty Ltd Executive Summary Around the world many fisheries are shared fisheries in the sense that a common fish stock is accessed by both commercial and non-commercial fishers. Non-commercial fishers can include recreational fishers or customary fishers or both. A prevalent problem in these fisheries is competition between commercial and non-commercial fishers for access to a resource that is subject to increasing utilisation pressure. This paper explores some of the issues that managers who are charged with the task of maximizing the value to society from multiple uses of a sustainable catch need to consider when allocating fish stocks between the various competing interests. The analysis of the issues is set within the New Zealand management framework with particular reference to the biology and management of the New .

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