Ecosystem structure and trophic analysis of Angolan fishery landings

Ronaldo Angelini; Filomena Vaz-Velho

doi:10.3989/scimar.2011.75n2309

Autores/as

Ronaldo Angelini Departamento de Engenharia Civil, Universidade Federal do Rio Grande do Norte - Marine Research Institute and Zoology Department, University of Cape Town
Filomena Vaz-Velho Instituto Nacional de Investigação Pesqueira

DOI:

https://doi.org/10.3989/scimar.2011.75n2309

Palabras clave:

Ecopath con Ecosim, ecosistema marino, gestión pesquera, nivel trófico, Sardinella

Resumen

El nivel trófico de los desembarques pesqueros de Angola y el modelo Ecopath con Ecosim (EwE), fueron utilizados para examinar la dinámica de la pesquería de Angola. Los resultados fueron comparados con los ecosistemas de Namibia y de Sudáfrica, con quienes se comparte algunas de las poblaciones de peces. Los análisis permiten concluir que: i. El nivel trófico promedio de los desembarques en Angola no disminuyó; ii. Existe una correlación significativa entre los desembarques de Angola, Namibia y Sudáfrica; iii. Los atributos del ecosistema (EwE) para los tres ambientes fueron muy similares; iv. El patrón similar de desarrollo de los ecosistemas, implica que es necesario mantener estudios conjuntos para las poblaciones de peces y de sus ecosistemas entre las tres regiones. Para una mejora del modelo de Angola se requiere de una mejor comprensión de la dinámica del plancton, que representa una fuente esencial para Sardinella spp., como también de un detallado análisis de los contenidos estomacales de las especies de la región.

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