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dc.contributor.author
Ponce, Tania
dc.contributor.author
Cubillos, Luis A.
dc.contributor.author
Ciancio Blanc, Javier Ernesto
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dc.contributor.author
Castro, Leonardo R.
dc.contributor.author
Araya, Miguel
dc.date.available
2023-08-28T15:32:17Z
dc.date.issued
2021-05
dc.identifier.citation
Ponce, Tania; Cubillos, Luis A.; Ciancio Blanc, Javier Ernesto; Castro, Leonardo R.; Araya, Miguel; Isotopic niche and niche overlap in benthic crustacean and demersal fish associated to the bottom trawl fishing in south-central Chile; Elsevier Science; Journal of Sea Research; 173; 5-2021; 1-10
dc.identifier.issn
1385-1101
dc.identifier.uri
http://hdl.handle.net/11336/209591
dc.description.abstract
In habitats impacted by bottom trawling that influences the resilience of few and widely distributed abundant species, it is relevant to analyze how populations are structured according to their niche and niche overlap, and hence contributing to the ecosystem-based management approach. We evaluated and compared the isotopic niche width and determined the isotopic niche overlap for target and bycatch species of crustaceans and demersal fish caught with bottom trawling on the continental shelf and upper slope of the central-southern zone of Chile. Stable isotope analysis relied on carbon and nitrogen isotopes (13C and 15N) and Bayesian statistics of niche size and community metrics. Crustaceans and fish species are structured in three clusters according to the stable isotope values and the Chilean hake Merluccius gayi, which was probably clustered isolated due to its pelagic stable isotope values due to diel vertical migrations associated with feeding on euphausiids in the water column. The first group was constituted by demersal fish, that showed higher δ15N (19‰) and narrower δ13C (−16‰). The two other groups constituted a mix of crustaceans and fish, with access to different carbon sources. There were degrees of specialization for most species within the groups and overlap in the isotopic niche between populations. The benthic and demersal macrofauna species are structured by sharing resources in the habitat, probably on available sources supported by the productive pelagic system.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
COMMUNITY
dc.subject
ISOTOPES
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ISOTOPIC NICHE
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NICHE OVERLAP
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TROPHIC DIMENSION
dc.subject.classification
Biología Marina, Limnología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Isotopic niche and niche overlap in benthic crustacean and demersal fish associated to the bottom trawl fishing in south-central Chile
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-08-28T13:04:03Z
dc.journal.volume
173
dc.journal.pagination
1-10
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Ponce, Tania. Universidad de Concepción. Facultad de Ciencias Naturales y Oceanografía; Chile
dc.description.fil
Fil: Cubillos, Luis A.. Universidad de Concepción. Facultad de Ciencias Naturales y Oceanografía; Chile
dc.description.fil
Fil: Ciancio Blanc, Javier Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
dc.description.fil
Fil: Castro, Leonardo R.. Universidad de Concepción. Facultad de Ciencias Naturales y Oceanografía; Chile
dc.description.fil
Fil: Araya, Miguel. Universidad de Chile; Chile
dc.journal.title
Journal of Sea Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1385110121000654
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.seares.2021.102059
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