Short-term changes in demersal fish assemblages exploited by an artisanal set gill net fishery in the Caribbean Sea (Colombia)

Short-term changes in demersal fish assemblages exploited by an artisanal set gill net fishery in the Caribbean Sea (Colombia)

A basic input for implementing ecosystem-based management measures is the knowledge on fish assemblages exploited by multispecies fisheries, such as the set gill net artisanal fishery in the Gulf of Salamanca (GoS), Caribbean Sea (Colombia), which catches a large number of high-value demersal specie...

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Autores principales: Salazar-Pérez, Carlos, Choles-Rodríguez, Eduardo, Manjarrés-Martínez, Luis
Formato: Online
Lenguaje:eng
Publicado: Iniversidad Autónoma de Baja California 2020
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3041
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id oai:cienciasmarinas.com.mx:article-3041
record_format ojs
institution Ciencias Marinas
collection OJS
language eng
format Online
author Salazar-Pérez, Carlos
Choles-Rodríguez, Eduardo
Manjarrés-Martínez, Luis
spellingShingle Salazar-Pérez, Carlos
Choles-Rodríguez, Eduardo
Manjarrés-Martínez, Luis
Short-term changes in demersal fish assemblages exploited by an artisanal set gill net fishery in the Caribbean Sea (Colombia)
author_facet Salazar-Pérez, Carlos
Choles-Rodríguez, Eduardo
Manjarrés-Martínez, Luis
author_sort Salazar-Pérez, Carlos
title Short-term changes in demersal fish assemblages exploited by an artisanal set gill net fishery in the Caribbean Sea (Colombia)
title_short Short-term changes in demersal fish assemblages exploited by an artisanal set gill net fishery in the Caribbean Sea (Colombia)
title_full Short-term changes in demersal fish assemblages exploited by an artisanal set gill net fishery in the Caribbean Sea (Colombia)
title_fullStr Short-term changes in demersal fish assemblages exploited by an artisanal set gill net fishery in the Caribbean Sea (Colombia)
title_full_unstemmed Short-term changes in demersal fish assemblages exploited by an artisanal set gill net fishery in the Caribbean Sea (Colombia)
title_sort short-term changes in demersal fish assemblages exploited by an artisanal set gill net fishery in the caribbean sea (colombia)
description A basic input for implementing ecosystem-based management measures is the knowledge on fish assemblages exploited by multispecies fisheries, such as the set gill net artisanal fishery in the Gulf of Salamanca (GoS), Caribbean Sea (Colombia), which catches a large number of high-value demersal species. Assemblages of this type were identified in this study, and significant differences (P < 0.01) between sampling periods (2008 and 2013) and seasons were found by means of a two-way permutational multivariate analysis of variance. These results were consistent with those obtained with the principal coordinates analysis, indicating the occurrence of short-term structural changes in these assemblages. Interannual and seasonal variations in discriminant and typifying species were also identified using similarity percentages, and a decreasing trend in landing per unit effort was established by the bootstrap method. On the other hand, both the geographic location of the fishing grounds and the characterization of historical changes in the set gill nets used in the GoS were determined using the traditional ecological knowledge of local fishermen, who reported a decrease in mesh sizes. In conclusion, temporal variations could be related to changes in the gill nets, the fishing trip schedules, and the spatial distribution of fishing effort, all which occurred in response to the decrease in catch rates in traditional fishing grounds.
publisher Iniversidad Autónoma de Baja California
publishDate 2020
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3041
_version_ 1792606981011275776
spelling oai:cienciasmarinas.com.mx:article-30412024-02-28T00:10:57Z Short-term changes in demersal fish assemblages exploited by an artisanal set gill net fishery in the Caribbean Sea (Colombia) Cambios de corto plazo en ensamblajes de peces demersales explotados por una pesquería artesanal de redes de enmalle fijas en el mar Caribe (Colombia) Salazar-Pérez, Carlos Choles-Rodríguez, Eduardo Manjarrés-Martínez, Luis management fishing gear traditional ecological knowledge fishing effort PRIMER manejo artes de pesca conocimiento ecológico tradicional esfuerzo pesquero PRIMER A basic input for implementing ecosystem-based management measures is the knowledge on fish assemblages exploited by multispecies fisheries, such as the set gill net artisanal fishery in the Gulf of Salamanca (GoS), Caribbean Sea (Colombia), which catches a large number of high-value demersal species. Assemblages of this type were identified in this study, and significant differences (P < 0.01) between sampling periods (2008 and 2013) and seasons were found by means of a two-way permutational multivariate analysis of variance. These results were consistent with those obtained with the principal coordinates analysis, indicating the occurrence of short-term structural changes in these assemblages. Interannual and seasonal variations in discriminant and typifying species were also identified using similarity percentages, and a decreasing trend in landing per unit effort was established by the bootstrap method. On the other hand, both the geographic location of the fishing grounds and the characterization of historical changes in the set gill nets used in the GoS were determined using the traditional ecological knowledge of local fishermen, who reported a decrease in mesh sizes. In conclusion, temporal variations could be related to changes in the gill nets, the fishing trip schedules, and the spatial distribution of fishing effort, all which occurred in response to the decrease in catch rates in traditional fishing grounds. Un insumo básico para la aplicación de medidas de manejo basado en el ecosistema es el conocimiento de los ensamblajes de especies ícticas explotados por pesquerías multiespecíficas, como la pesquería de redes de enmalle fijas del golfo de Salamanca (GdS), mar Caribe (Colombia), la cual captura un alto número de especies demersales de alto valor comercial. En el presente trabajo se identificaron tales ensamblajes, y se establecieron diferencias significativas (P < 0.01) entre periodos de muestreo (2008 y 2013) y épocas climáticas aplicando un análisis de varianza multivariado basado en permutaciones de 2 vías. Estos resultados fueron coherentes con los obtenidos mediante el análisis de coordenadas principales, lo que indica la ocurrencia de cambios de corto plazo en la estructura de estos ensamblajes. Mediante la técnica de porcentaje de similitud, se identificaron también variaciones interanuales y estacionales tanto en las especies tipificantes como en las discriminantes, y mediante el remuestreo (bootstrap), se estableció una tendencia decreciente en el desembarco por unidad de esfuerzo. Por otro lado, para ubicar geográficamente los sitios de pesca y caracterizar los cambios históricos en el diseño de las redes de enmalle fijas utilizadas en el GdS, se acudió al conocimiento ecológico tradicional de los pescadores rederos del área, lo que permitió detectar una disminución en los tamaños de malla empleados en esta pesquería. Por tanto, se concluye que las variaciones temporales podrían guardar relación con los cambios en las redes de enmalle, los horarios de las faenas y la distribución espacial del esfuerzo pesquero, los cuales se generaron en respuesta a la disminución en las tasas de captura obtenidas en los caladeros tradicionales. Iniversidad Autónoma de Baja California 2020-03-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf text/xml text/xml https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3041 10.7773/cm.v46i1.3041 Ciencias Marinas; Vol. 46 No. 1 (2020); 39–56 Ciencias Marinas; Vol. 46 Núm. 1 (2020); 39–56 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3041/420420495 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3041/420420946 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3041/420420650 Copyright (c) 2020 Ciencias Marinas https://creativecommons.org/licenses/by/4.0

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