Mostrar el registro sencillo del ítem
dc.contributor.author
van den Berg, Gideon
dc.contributor.author
Vermeulen, Els
dc.contributor.author
Valenzuela, Luciano Oscar
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Bérubé, Martine
dc.contributor.author
Ganswindt, Andre
dc.contributor.author
Gröcke, Darren R.
dc.contributor.author
Hall, Grant
dc.contributor.author
Hulva, Pavel
dc.contributor.author
Neveceralova, Petra
dc.contributor.author
Palsbøll, Perl J.
dc.contributor.author
Carroll, Emma L.
dc.date.available
2021-03-08T13:54:14Z
dc.date.issued
2020-12
dc.identifier.citation
van den Berg, Gideon; Vermeulen, Els; Valenzuela, Luciano Oscar; Bérubé, Martine; Ganswindt, Andre; et al.; Decadal shift in foraging strategy of a migratory southern ocean predator; Wiley Blackwell; Global Change Biology; 27; 5; 12-2020; 1052-1067
dc.identifier.issn
1354-1013
dc.identifier.uri
http://hdl.handle.net/11336/127722
dc.description.abstract
Rapid anthropogenic environmental change is expected to impact a host of ecological parameters in Southern Ocean ecosystems. Of critical concern are the consequences of these changes on the range of species that show fidelity to migratory destinations, as philopatry is hypothesized to help or hinder adaptation to climate change depending on the circumstances. Many baleen whales show philopatry to feeding grounds and are also capital breeders that meet migratory and reproductive costs through seasonal energy intake. Southern right whales (Eubalaena australis, SRWs) are capital breeders that have a strong relationship between reproductive output and foraging success. The population dynamics of South Africa's population of SRWs are characterized by two distinct periods: the 1990s, a period of high calving rates; and the late 2010s, a period associated with lowered calving rates. Here we use analyses of stable carbon (δ13C) and nitrogen (δ15N) isotope values from SRW biopsy samples (n = 122) collected during these two distinct periods to investigate foraging ecology of the South African population of SRWs over a time period coincident with the demographic shift. We show that South African SRWs underwent a dramatic northward shift, and diversification, in foraging strategy from 1990s to 2010s. Bayesian mixing model results suggest that during the 1990s, South African SRWs foraged on prey isotopically similar to South Georgia/Islas Georgias del Sur krill. In contrast, in the 2010s, South African SRWs foraged on prey isotopically consistent with the waters of the Subtropical Convergence, Polar Front and Marion Island. We hypothesize that this shift represents a response to changes in preferred habitat or prey, for example, the decrease in abundance and southward range contraction of Antarctic krill. By linking reproductive decline to changing foraging strategies for the first time in SRWs, we show that altering foraging strategies may not be sufficient to adapt to a changing ocean.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BAYESIAN MIXING MODEL
dc.subject
CETACEAN
dc.subject
CLIMATE CHANGE
dc.subject
FORAGING ECOLOGY
dc.subject
INDICATOR SPECIES
dc.subject
REPRODUCTIVE SUCCESS
dc.subject
SIBER
dc.subject
SOUTHERN OCEAN
dc.subject
SOUTHERN RIGHT WHALE
dc.subject
STABLE ISOTOPES
dc.subject.classification
Conservación de la Biodiversidad
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
Ciencias Biológicas
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.title
Decadal shift in foraging strategy of a migratory southern ocean predator
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-02-10T21:02:39Z
dc.journal.volume
27
dc.journal.number
5
dc.journal.pagination
1052-1067
dc.journal.pais
Reino Unido
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.journal.ciudad
Londres
dc.description.fil
Fil: van den Berg, Gideon. University of Pretoria; Sudáfrica
dc.description.fil
Fil: Vermeulen, Els. University of Pretoria; Sudáfrica
dc.description.fil
Fil: Valenzuela, Luciano Oscar. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Sociales. Departamento de Arqueología. Laboratorio de Ecología Evolutiva Humana (Sede Quequén); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; Argentina
dc.description.fil
Fil: Bérubé, Martine. University of Groningen; Países Bajos
dc.description.fil
Fil: Ganswindt, Andre. University of Pretoria; Sudáfrica
dc.description.fil
Fil: Gröcke, Darren R.. Durham University; Reino Unido
dc.description.fil
Fil: Hall, Grant. University of Pretoria; Sudáfrica
dc.description.fil
Fil: Hulva, Pavel. Charles University; República Checa
dc.description.fil
Fil: Neveceralova, Petra. Charles University; República Checa
dc.description.fil
Fil: Palsbøll, Perl J.. University of Groningen; Países Bajos
dc.description.fil
Fil: Carroll, Emma L.. University of Auckland; Nueva Zelanda
dc.journal.title
Global Change Biology
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/gcb.15465
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1111/gcb.15465
Archivos asociados