A spatially explicit model for predicting the probability of occurrence of zero-catch quadrants in the tuna purse seine fishery of the Eastern Tropical Pacific Ocean

A spatially explicit model for predicting the probability of occurrence of zero-catch quadrants in the tuna purse seine fishery of the Eastern Tropical Pacific Ocean

Null purse seine sets (those in which the catch is zero) are common in every tuna fishery in the world. Current evidence suggests that different environmental factors can influence the occurrence of null sets. In this study, we used a long-term (2003–2015) database from the tuna purse seine fishery...

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Autores principales: Marín-Enríquez, Emigdio, Moreno-Sánchez, Xchel G, Urcádiz-Cázares, Francisco J, Morales-Bojórquez, Enrique, Ramírez-Pérez, J Saúl
Formato: Online
Lenguaje:eng
Publicado: Iniversidad Autónoma de Baja California 2020
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3026
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spelling oai:cienciasmarinas.com.mx:article-30262024-02-28T00:02:16Z A spatially explicit model for predicting the probability of occurrence of zero-catch quadrants in the tuna purse seine fishery of the Eastern Tropical Pacific Ocean Un modelo espacialmente explícito para predecir la ocurrencia de cuadrantes con capturas nulas en la pesquería de túnidos que opera con red de cerco en el océano Pacífico Tropical Oriental Marín-Enríquez, Emigdio Moreno-Sánchez, Xchel G Urcádiz-Cázares, Francisco J Morales-Bojórquez, Enrique Ramírez-Pérez, J Saúl seiners tuna fisheries remote sensing eastern Pacific Ocean buques cerqueros pesquería de túnidos sensores remotos océano Pacífico oriental Null purse seine sets (those in which the catch is zero) are common in every tuna fishery in the world. Current evidence suggests that different environmental factors can influence the occurrence of null sets. In this study, we used a long-term (2003–2015) database from the tuna purse seine fishery in the eastern Pacific Ocean to analyze the temporal and spatial variability of the occurrence of 1º × 1º quadrants where the retained tuna catch was zero (“null cells”). We fitted a logistic generalized additive model to predict the occurrence of null cells as a function of environmental and operational covariates. Results of the modeling process suggested that high probabilities of null cell occurrence exist mainly in 2 environmentally different zones: the entrance to the Gulf of California, Mexico, and off the coast of Central America. The final statistical model suggested that operational variables (number of sets, type of fishing indicator) are more important to null cell occurrence than environmental factors (sea surface temperature, chlorophyll concentration, sea level anomaly, and El Niño events). Los lances nulos (lances en donde la captura retenida es cero) ocurren de manera común en las pesquerías de túnidos alrededor del mundo. La evidencia actual sugiere que existen distintos factores ambientales que pueden influir en la ocurrencia de este tipo de lances. En el presente trabajo se utilizó una base de datos histórica (2003–2015) de la pesquería de túnidos que opera con red de cerco en el Pacífico Tropical Oriental. Se analizó la variabilidad espaciotemporal de la ocurrencia de cuadrantes de 1º × 1º en donde la captura retenida fue cero (“cuadrantes nulos”). Se ajustó un modelo aditivo generalizado logístico para predecir la ocurrencia de los cuadrantes nulos en función de distintas varia- bles ambientales y operacionales. Los resultados sugirieron que existen 2 zonas con alta probabilidad de ocurrencia de cuadrantes nulos, las cuales son muy diferentes desde el punto de vista ambiental: la entrada al golfo de California, México, y frente a la costa de Centroamérica. El modelo estadístico final sugirió que los factores operacionales (número de lances, indicador de pesca) son más importantes para determinar la ocurrencia de cuadrantes nulos que los factores ambientales (temperatura superficial del mar, concentración de clorofila, anomalía del nivel del mar, y eventos El Niño). 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/3026 10.7773/cm.v46i1.3026 Ciencias Marinas; Vol. 46 No. 1 (2020); 19–38 Ciencias Marinas; Vol. 46 Núm. 1 (2020); 19–38 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3026/420420493 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3026/420420945 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3026/420420649 Copyright (c) 2020 Ciencias Marinas https://creativecommons.org/licenses/by/4.0
institution Ciencias Marinas
collection OJS
language eng
format Online
author Marín-Enríquez, Emigdio
Moreno-Sánchez, Xchel G
Urcádiz-Cázares, Francisco J
Morales-Bojórquez, Enrique
Ramírez-Pérez, J Saúl
spellingShingle Marín-Enríquez, Emigdio
Moreno-Sánchez, Xchel G
Urcádiz-Cázares, Francisco J
Morales-Bojórquez, Enrique
Ramírez-Pérez, J Saúl
A spatially explicit model for predicting the probability of occurrence of zero-catch quadrants in the tuna purse seine fishery of the Eastern Tropical Pacific Ocean
author_facet Marín-Enríquez, Emigdio
Moreno-Sánchez, Xchel G
Urcádiz-Cázares, Francisco J
Morales-Bojórquez, Enrique
Ramírez-Pérez, J Saúl
author_sort Marín-Enríquez, Emigdio
title A spatially explicit model for predicting the probability of occurrence of zero-catch quadrants in the tuna purse seine fishery of the Eastern Tropical Pacific Ocean
title_short A spatially explicit model for predicting the probability of occurrence of zero-catch quadrants in the tuna purse seine fishery of the Eastern Tropical Pacific Ocean
title_full A spatially explicit model for predicting the probability of occurrence of zero-catch quadrants in the tuna purse seine fishery of the Eastern Tropical Pacific Ocean
title_fullStr A spatially explicit model for predicting the probability of occurrence of zero-catch quadrants in the tuna purse seine fishery of the Eastern Tropical Pacific Ocean
title_full_unstemmed A spatially explicit model for predicting the probability of occurrence of zero-catch quadrants in the tuna purse seine fishery of the Eastern Tropical Pacific Ocean
title_sort spatially explicit model for predicting the probability of occurrence of zero-catch quadrants in the tuna purse seine fishery of the eastern tropical pacific ocean
description Null purse seine sets (those in which the catch is zero) are common in every tuna fishery in the world. Current evidence suggests that different environmental factors can influence the occurrence of null sets. In this study, we used a long-term (2003–2015) database from the tuna purse seine fishery in the eastern Pacific Ocean to analyze the temporal and spatial variability of the occurrence of 1º × 1º quadrants where the retained tuna catch was zero (“null cells”). We fitted a logistic generalized additive model to predict the occurrence of null cells as a function of environmental and operational covariates. Results of the modeling process suggested that high probabilities of null cell occurrence exist mainly in 2 environmentally different zones: the entrance to the Gulf of California, Mexico, and off the coast of Central America. The final statistical model suggested that operational variables (number of sets, type of fishing indicator) are more important to null cell occurrence than environmental factors (sea surface temperature, chlorophyll concentration, sea level anomaly, and El Niño events).
publisher Iniversidad Autónoma de Baja California
publishDate 2020
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3026
_version_ 1792606980709285888

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