Sensitivity analysis of the multispecies virtual population analysis model parameterized for a system of trophically-linked species from the eastern Bering Sea

Sensitivity analysis of the multispecies virtual population analysis model parameterized for a system of trophically-linked species from the eastern Bering Sea

A sensitivity analysis of a multispecies virtual population analysis (MSVPA) model parameterized for the Bering Sea was carried out using two methods for the analysis. In the first method, four variables related to the predation mortality M2 and population size of age-1 walleye pollock (Theragra cha...

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Autores principales: Jurado-Molina, J, Livington, P, Galluci, VF
Formato: Online
Lenguaje:eng
Publicado: Iniversidad Autónoma de Baja California 2004
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/245
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spelling oai:cienciasmarinas.com.mx:article-2452019-04-11T22:07:44Z Sensitivity analysis of the multispecies virtual population analysis model parameterized for a system of trophically-linked species from the eastern Bering Sea Análisis de sensibilidad del modelo de análisis poblacional virtual multiespecífico aplicado a un sistema de especies relacionadas tróficamente del Mar de Bering Oriental Jurado-Molina, J Livington, P Galluci, VF sensitivity analysis MSVPA predation mortality walleye pollock Bering Sea análisis de sensibilidad MSVPA mortalidad por depredación abadejo de Alaska Mar de Bering A sensitivity analysis of a multispecies virtual population analysis (MSVPA) model parameterized for the Bering Sea was carried out using two methods for the analysis. In the first method, four variables related to the predation mortality M2 and population size of age-1 walleye pollock (Theragra chalcogramma) and Pacific cod (Gadus macrocephalus) were chosen as response variables. Results suggested that the response variables of walleye pollock were sensitive to the residual mortality M1 of walleye pollock, the stock size of arrowtooth flounder (Atheresthes stomias) and ration of both predator species. Pacific cod response variables were sensitive only to variables related to Pacific cod. These results reinforce the importance of cannibalism in the dynamics of walleye pollock and Pacific cod. Results from the individual perturbation parameter analysis showed that the changes produced by large positive perturbations in the "other food" parameter were small. The overall results suggest that the MSVPA model can be considered robust. These results help to recognize the potential use of MSVPA as a tool to assist in broadening the management of the fishery resources from the Bering Sea within a multispecies perspective.  Se llevó a cabo un análisis de sensibilidad para el modelo de análisis de población virtual multiespecifico (MSVPA, por sus siglas en inglés) aplicado al Mar de Bering con dos métodos distintos. Con el primer método, se consideraron variables de respuesta a cuatro variables relacionadas con la mortalidad por depredación M2 y el tamaño de la población de un año de edad de abadejo de Alaska (Theragra chalcogramma) y bacalao del Pacífico (Gadus macrocephalus). Los resultados sugirieron que las variables de respuesta del abadejo de Alaska fueron sensibles a la mortalidad residual M1 del propio abadejo, a la magnitud del stock de Atheresthes stomias y a la ración de ambas especies. Las variables de respuesta del bacalao del Pacífico fueron sensibles únicamente a variables relacionadas con la misma especie. Estos resultados refuerzan la importancia del canibalismo en la dinámica tanto del abadejo de Alaska como del bacalao del Pacífico. Los resultados del análisis de perturbación mostraron que los cambios causados por las perturbaciones positivas grandes en el parámetro "otras presas" ("other food" en inglés) fueron pequeños. Los resultados de ambos análisis de sensibilidad sugieren que el modelo MSVPA puede ser considerado robusto. Este resultado ayuda a reconocer el uso potencial del modelo MSVPA como una herramienta útil para incluir el manejo de los recursos pesqueros del Mar de Bering dentro de una perspectiva multiespecífica. Iniversidad Autónoma de Baja California 2004-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/245 10.7773/cm.v30i2.245 Ciencias Marinas; Vol. 30 No. 2 (2004); 285-296 Ciencias Marinas; Vol. 30 Núm. 2 (2004); 285-296 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/245/208
institution Ciencias Marinas
collection OJS
language eng
format Online
author Jurado-Molina, J
Livington, P
Galluci, VF
spellingShingle Jurado-Molina, J
Livington, P
Galluci, VF
Sensitivity analysis of the multispecies virtual population analysis model parameterized for a system of trophically-linked species from the eastern Bering Sea
author_facet Jurado-Molina, J
Livington, P
Galluci, VF
author_sort Jurado-Molina, J
title Sensitivity analysis of the multispecies virtual population analysis model parameterized for a system of trophically-linked species from the eastern Bering Sea
title_short Sensitivity analysis of the multispecies virtual population analysis model parameterized for a system of trophically-linked species from the eastern Bering Sea
title_full Sensitivity analysis of the multispecies virtual population analysis model parameterized for a system of trophically-linked species from the eastern Bering Sea
title_fullStr Sensitivity analysis of the multispecies virtual population analysis model parameterized for a system of trophically-linked species from the eastern Bering Sea
title_full_unstemmed Sensitivity analysis of the multispecies virtual population analysis model parameterized for a system of trophically-linked species from the eastern Bering Sea
title_sort sensitivity analysis of the multispecies virtual population analysis model parameterized for a system of trophically-linked species from the eastern bering sea
description A sensitivity analysis of a multispecies virtual population analysis (MSVPA) model parameterized for the Bering Sea was carried out using two methods for the analysis. In the first method, four variables related to the predation mortality M2 and population size of age-1 walleye pollock (Theragra chalcogramma) and Pacific cod (Gadus macrocephalus) were chosen as response variables. Results suggested that the response variables of walleye pollock were sensitive to the residual mortality M1 of walleye pollock, the stock size of arrowtooth flounder (Atheresthes stomias) and ration of both predator species. Pacific cod response variables were sensitive only to variables related to Pacific cod. These results reinforce the importance of cannibalism in the dynamics of walleye pollock and Pacific cod. Results from the individual perturbation parameter analysis showed that the changes produced by large positive perturbations in the "other food" parameter were small. The overall results suggest that the MSVPA model can be considered robust. These results help to recognize the potential use of MSVPA as a tool to assist in broadening the management of the fishery resources from the Bering Sea within a multispecies perspective. 
publisher Iniversidad Autónoma de Baja California
publishDate 2004
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/245
_version_ 1715723946631888896

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