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Development of a General Fisheries Production Function: The Role of Effort Indices and Separability

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  • This paper discusses the connection between the concepts of fishing effort and separability of the variables in a general fisheries production function of the Translog form. It compares the results of the discussion with the Cobb-Douglas and Constant Elasticity of Substitution forms. It concludes that to assume unconditionally that some or all inputs in the production function can be aggregated into one effort index, frequently done simply by multiplication of the separate input variables, is often erroneous. First, the variables may not be separable, and secondly, if some input variables are separable, the structure of the effort index will depend on the specification of the production function employed, and will not be a simple product.
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  • Hoff, Ayoe and Philip Rodgers. 2006. Development of a General Fisheries Production Function: The Role of Effort Indices and Separability. In: Proceedings of the Thirteenth Biennial Conference of the International Institute of Fisheries Economics & Trade, July 11-14, 2006, Portsmouth, UK: Rebuilding Fisheries in an Uncertain Environment. Compiled by Ann L. Shriver. International Institute of Fisheries Economics & Trade, Corvallis, Oregon, USA, 2006. CD ROM. ISBN 0-9763432-3-1
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  • The National Oceanic & Atmospheric Administration Marine Fisheries Service, United States Department of Commerce (NOAA Fisheries); United Kingdom Department for Environment, Food and Rural Affairs (DEFRA); The United States Agency for International Development supported Aquaculture Collaborative Research and Support Program (ACRSP).
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