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Quantitative ecological risk assessment of shortfin mako shark (isurus oxyrinchus): proposed model and application example

Authordc.contributor.authorDuarte, H. O. 
Authordc.contributor.authorDroguet, E. L. 
Authordc.contributor.authorMoura, M. C. 
Cita de ítemdc.identifier.citationApplied Ecology and Environmental Research Volumen: 16 Número: 3 Páginas: 3691-3709es_ES
Abstractdc.description.abstractMost of the world's catches of sharks are incidentally taken by tuna fishing gear, constituting bycatches that increase the extinction risk of several species of shark. This not only alters ecosystem functions by removing top predators, but may also hinder the industry production itself due to cutoff measures set by authorities. This paper focuses on the female population abundance of a very important bycatch species, the shortfin mako shark (Isurus oxyrinchus), and proposes a stochastic model for quantitative risk assessment under varying harvest regimes and control measures. The proposed model can be applied to any shortfin mako shark population by changing initial conditions and harvest parameters. The flexibility of the model makes it practicable to simulate hundreds of scenarios, analyse and compare the most relevant results such as the risk of extinction caused by a given harvest regime, median time to extinction, expected minimum biomass, risk of low harvest, and risk reduction caused by control measure; these outcomes are useful for rational decisions under uncertainty. We present an application example as a means to demonstrate how the proposed model can be used to drive management decisions for sustainable tuna harvest.es_ES
Patrocinadordc.description.sponsorshipCoordination of Improvement of Higher Level Personnel (CAPES) Ministry of Education of Brazil 99999.012371/2013-00es_ES
Publisherdc.publisherALÖKI Kft.es_ES
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.uri*
Sourcedc.sourceApplied Ecology and Environmental Researches_ES
Keywordsdc.subjectStochastic modeles_ES
Keywordsdc.subjectProbabilistic systemses_ES
Keywordsdc.subjectSensitivity analysises_ES
Keywordsdc.subjectMonte carlo simulationes_ES
Keywordsdc.subjectEcological modelinges_ES
Títulodc.titleQuantitative ecological risk assessment of shortfin mako shark (isurus oxyrinchus): proposed model and application examplees_ES
Document typedc.typeArtículo de revistaes_ES
Indexationuchile.indexArtículo de publicación ISIes_ES

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Attribution-NonCommercial-NoDerivs 3.0 Chile
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile