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Pesca Demersal en Chile: Eficiencia Técnica y Escalas de Operación

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Abstract

Este trabajo presenta estimaciones de eficiencia técnica en faenas de pesca de barcos industriales que operaron en la década 1990-2000, en la pesquería de merluza común. Se comparan los resultados de dos algoritmos que estiman modelos de fronteras estocásticas de producción, uno con efectos fijos y otro conefectos aleatorios. Entre los resultados obtenidos se destaca: (a) Se obtiene una elevada y significativa correlación entre los rankings de eficiencias estimadas con uno y otro algoritmo. (b) El algoritmo con efectos fijos genera mayores scores de eficiencia y distribuciones de eficiencia con mayor dispersión. (c)Ambos algoritmos estiman mayores eficiencias para barcos con mayor tamaño y potencia de motor. Mientras que barcos de menor tamaño presentan mayor dispersión en sus eficiencias estimadas. Esto último insinúa la presencia de mayor heterogeneidad tecnológica en este último grupo de barcos. (d) Por otro lado, estimadores consistentes señalan la presencia de rendimientos marginales decrecientes ante aumentos en el nivel del esfuerzo de pesca de cada barco. (e) Lo anterior es consistente con resultados que insinúan la presencia de efectos congestión, asociados a la escala de operación pesquera del total de la flota industrial en estudio. (f) Se confirma la relevancia empírica de la forma funcional Translog. Con ello, estimaciones punto para los valores de elasticidades captura-insumo en general dependen de la escala agregada de operación pesquera y/o de la abundancia del stock de peces bajo explotación.

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  • Julio Peña-Torres & Julio Aguirre Montoya & René Cerdá D'amico, 2004. "Pesca Demersal en Chile: Eficiencia Técnica y Escalas de Operación," ILADES-Georgetown University Working Papers inv152, Ilades-Georgetown University, Universidad Alberto Hurtado/School of Economics and Bussines.
  • Handle: RePEc:ila:ilades:inv152
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    Keywords

    Fronteras estocásticas; eficiencia técnica; estimación de panel; pesca demersal en Chile; pesquería de merluza común (merluccius gayi).;

    JEL classification:

    • Q22 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Fishery
    • C33 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Models with Panel Data; Spatio-temporal Models
    • L7 - Industrial Organization - - Industry Studies: Primary Products and Construction

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