Título:
Using trophic modeling: evaluating fisheries discard effect on the Río de la Plata estuary and coastal shelf
Otros títulos:
Coordinador:
Director:
Compilador:
Autor:
Damiano, Gustavo
Lercari Bernier, Diego
Lercari Bernier, Diego
Tutor:
Tipo de documento:
Artículo
Editor:
Palabras clave:
Ecosystem approach
Fisheries
Discard
Ecopath with Ecosim
Río de la Plata
Uruguay
Fisheries
Discard
Ecopath with Ecosim
Río de la Plata
Uruguay
Descriptores:
Año de publicación:
2022
Contenido:
Resumen:
While fishing discards and bycatch are worrisome for fisheries management, research has been mainly focused on commercial or threatened species, while the ecosystem effects were largely neglected. In this work, the effects of discard and fishing efforts on the structure and the functioning of the food web of the Río de la Plata (RdlP) were analyzed using mass balance and dynamic trophic modeling. Discard is consumed almost entirely by several species with a large preference for it, producing mixed trophic impacts. The role of discard on the global attributes of the RdlP ecosystem does not seem important, resulting in a low incidence in trophic flows, growth, and development of the trophic web. Dynamic simulations showed a mixed response to variations of discards, with some groups responding positively and others negatively. For example, a decrease in discards would produce a slight decrease in the biomass of most functional groups, being more pronounced in the predators of the system. Variations in biomass produced by discards are more sensitive under the assumption of bottom-up ecosystem control than mixed control and to a lesser extent under top-down control. Our work confirms a complex relationship between discards and ecosystem functioning, warning about the beneficial result of discard reduction policies.
Descripción:
metadata.articulos.dc.description.uri:
Editorial:
Pontificia Unversidad Católica de Valparaíso
EN:
Latin American Journal of Aquatic Research, 2022, 50(3): 397-416
Financiadores:
CSIC: Grupos N°32
CSIC: VUSP M2
CSIC: VUSP M2
Citación:
Damiano, G y Lercari Bernier, D. "Using trophic modeling: evaluating fisheries discard effect on the Río de la Plata estuary and coastal shelf". Latin American Journal of Aquatic Research. [en línea] 2022, 50(3): 397-416. 20 h. DOI: 10.3856/vol50-issue3-fulltext-2803.
Citación:
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ISBN:
e-ISBN:
ISSN:
0718-560X
ISMN:
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Licencia:
Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)
Colecciones:
| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| 10.3856vol50-issue3-fulltext-2803.pdf | — | 1.43 MB | Adobe PDF |