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Combining performance measures to investigate capacity changes in fisheries

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The Common Fisheries Policy (CFP) aims to achieve a balance between the European fleet capacity and the resources available. This can be realized either by temporarily reducing the fishing effort (i.e. capacity utilization) or quotas in the hope of increasing the resources available or reducing the actual fishing capacity. In both cases, the relationship between effort indicators and capacity needs to be resolved in order for the manager to introduce the right interventions. Previous studies have estimated these relationships in multi-species fisheries using either a multi-output distance function approach (DFA) or with a second stage Data Envelopment Analysis (DEA). Both approaches have advantages and disadvantages. In this article, DEA and DFA are combined to reduce noise in the estimation and to establish more useful interpretations for the manager. The article compares the traditional DFA with the alternative approach for the Danish North Sea demersal trawlers. The alternative approach improves the estimation results and provides better estimates of efficiency scores, compared to the unadjusted DFA. Furthermore, the analyses suggest that the demersal trawlers have a limited ability to substitute catches of cod, plaice and Nephrops and that gross tonnage is a more consistent indicator of fishing capacity than engine power.

Keywords: B41; D24; Q22; capacity utilization; data enveleopment analysis; fisheries; multi-output distance function; substitution

Document Type: Research Article


Affiliations: 1: Institute of Food and Resource Economics, University of Copenhagen, Rolighedsvej 25, 1958, Frederiksberg C, Denmark 2: Marine and Atmospheric Research division, Commonwealth Scientific and Industrial Research Organisation (CSIRO), 4102, Queensland, Australia

Publication date: 2014-01-02

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