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dc.contributor.author
Riccialdelli, Luciana
dc.contributor.author
Becker, Yamila Anabella
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Fioramonti, Nicolas Ezequiel
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Torres, Monica Analia
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Bruno, Daniel Osvaldo
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Raya Rey, Andrea Nélida
dc.contributor.author
Fernandez, Daniel Alfredo
dc.date.available
2021-02-18T14:35:22Z
dc.date.issued
2020-11
dc.identifier.citation
Riccialdelli, Luciana; Becker, Yamila Anabella; Fioramonti, Nicolas Ezequiel; Torres, Monica Analia; Bruno, Daniel Osvaldo; et al.; Trophic structure of southern marine ecosystems: A comparative isotopic analysis from the beagle channel to the oceanic burdwood bank area under a wasp-waist assumption; Inter-Research; Marine Ecology Progress Series; 655; 11-2020; 1-27
dc.identifier.issn
0171-8630
dc.identifier.uri
http://hdl.handle.net/11336/125933
dc.description.abstract
Understanding the structure and functioning of marine ecosystems has become a critical issue to assess the potential short- and long-term effects of natural and anthropogenic impacts and to determine the knowledge needed to conduct appropriate conservation actions. This goal can be achieved in part by acquiring more detailed food web information and evaluating the processes that shape food web structure and dynamics. Our main objective was to identify large-scale patterns in the organization of pelagic food webs that can be linked to a wasp-waist (WW) structure, proposed for the southwestern South Atlantic Ocean. We evaluated 3 sub-Antarctic marine areas in a regional context: the Beagle Channel (BC), the Atlantic coast of Tierra del Fuego (CA) and the oceanic Burdwood Bank area (BB). We used carbon and nitrogen isotopic information of all functional trophic groups, ranging from primary producers to top predators, and analyzed them through stable isotope-based Bayesian analyses. We found that BC and BB have a more pronounced WW structure compared to CA. We identified species at mid to low trophic positions that play a key role in the trophodynamics of each marine area (e.g. Fuegian sprat Sprattus fuegensis, longtail southern cod Patagonotothen ramsayi and squat lobster Munida gregaria) and considered them as the most plausible WW species. The identification of the most influential species within food webs has become a crucial task for conservation purposes in local and regional contexts to maintain ecosystem integrity and the supply of ecosystem services for the southwestern South Atlantic Ocean.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Inter-Research
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
BEAGLE CHANNEL
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MPA NAMUNCURÁ-BURDWOOD BANK
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PELAGIC FOOD WEB
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TIERRA DEL FUEGO
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WASP-WAIST STRUCTURE
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Δ13C
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Δ15N
dc.subject.classification
Biología Marina, Limnología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Trophic structure of southern marine ecosystems: A comparative isotopic analysis from the beagle channel to the oceanic burdwood bank area under a wasp-waist assumption
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-12-04T14:48:22Z
dc.journal.number
655
dc.journal.pagination
1-27
dc.journal.pais
Alemania
dc.description.fil
Fil: Riccialdelli, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Becker, Yamila Anabella. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Fioramonti, Nicolas Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Torres, Monica Analia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Bruno, Daniel Osvaldo. Universidad Nacional de Tierra del Fuego. Instituto de Ciencias Polares, Recursos Naturales y Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Raya Rey, Andrea Nélida. Universidad Nacional de Tierra del Fuego. Instituto de Ciencias Polares, Recursos Naturales y Ambiente; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Fernandez, Daniel Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego. Instituto de Ciencias Polares, Recursos Naturales y Ambiente; Argentina
dc.journal.title
Marine Ecology Progress Series
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/prepress/m13524.html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3354/meps13524
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