Update of the population size and breeding performance of gentoo penguins (<i>Pygoscelis papua</i>) at Stranger Point/Cabo Funes, South Shetland Islands

Autores
Juáres, Mariana Alejandra; Casaux, Ricardo Jorge; Negrete, Javier; Rios, Ayelen; Castillo, Martín; Coria, Néstor Rubén; Santos, María Mercedes
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The plasticity in the trophic ecology, the breeding phenology, and the low nesting site fidelity would be the reasons why most of the gentoo penguin (Pygoscelis papua) populations breeding in the western Antarctic Peninsula and islands of Scotia Arc remained stable or increasing, despite the changing environmental conditions. Regardless of the overall trend, recent studies revealed a decline in the abundance of some gentoo penguin populations at those regions. Therefore, it is highly valuable to update the population size of each colony in order to confirm the current trends of individual colonies and generate a comprehensive overview of the population status. We report the abundance and breeding performance of gentoo penguins at the Stranger Point/Cabo Funes colony from 2000/2001 to 2018/2019. During the last season, 5383 breeding pairs and 5545 chicks in creche were counted. Despite there were considerable inter-annual fluctuations over the study period, the total number of gentoo penguin breeding pairs increased by 74.6% (+ 3.1% per annum), while the number of chicks creched increased by 60.0% (+ 2.6% per annum). However, the index of breeding success remained relatively constant over time, varying between 0.74 and 1.23 chicks in creche/breeding pairs. Gentoo penguins have life-history strategies that are advantageous to face the environmental variability, allowing the species to maintain their breeding performance stable over time and enhance their resilience, which can favour the population growth at Stranger Point.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Pygoscelis papua
Breeding pairs
Chicks crèched
Long-term trends
Antarctica
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/145052
Acceder
id SEDICI_5a952c9765677136578ce38e07cadde9
oai_identifier_str oai:sedici.unlp.edu.ar:10915/145052
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Update of the population size and breeding performance of gentoo penguins (<i>Pygoscelis papua</i>) at Stranger Point/Cabo Funes, South Shetland IslandsJuáres, Mariana AlejandraCasaux, Ricardo JorgeNegrete, JavierRios, AyelenCastillo, MartínCoria, Néstor RubénSantos, María MercedesCiencias NaturalesPygoscelis papuaBreeding pairsChicks crèchedLong-term trendsAntarcticaThe plasticity in the trophic ecology, the breeding phenology, and the low nesting site fidelity would be the reasons why most of the gentoo penguin (<i>Pygoscelis papua</i>) populations breeding in the western Antarctic Peninsula and islands of Scotia Arc remained stable or increasing, despite the changing environmental conditions. Regardless of the overall trend, recent studies revealed a decline in the abundance of some gentoo penguin populations at those regions. Therefore, it is highly valuable to update the population size of each colony in order to confirm the current trends of individual colonies and generate a comprehensive overview of the population status. We report the abundance and breeding performance of gentoo penguins at the Stranger Point/Cabo Funes colony from 2000/2001 to 2018/2019. During the last season, 5383 breeding pairs and 5545 chicks in creche were counted. Despite there were considerable inter-annual fluctuations over the study period, the total number of gentoo penguin breeding pairs increased by 74.6% (+ 3.1% per annum), while the number of chicks creched increased by 60.0% (+ 2.6% per annum). However, the index of breeding success remained relatively constant over time, varying between 0.74 and 1.23 chicks in creche/breeding pairs. Gentoo penguins have life-history strategies that are advantageous to face the environmental variability, allowing the species to maintain their breeding performance stable over time and enhance their resilience, which can favour the population growth at Stranger Point.Facultad de Ciencias Naturales y Museo2020-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf123-129http://sedici.unlp.edu.ar/handle/10915/145052enginfo:eu-repo/semantics/altIdentifier/issn/0722-4060info:eu-repo/semantics/altIdentifier/issn/1432-2056info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-019-02614-0info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:13:25Zoai:sedici.unlp.edu.ar:10915/145052Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:13:26.114SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Update of the population size and breeding performance of gentoo penguins (<i>Pygoscelis papua</i>) at Stranger Point/Cabo Funes, South Shetland Islands
title Update of the population size and breeding performance of gentoo penguins (<i>Pygoscelis papua</i>) at Stranger Point/Cabo Funes, South Shetland Islands
spellingShingle Update of the population size and breeding performance of gentoo penguins (<i>Pygoscelis papua</i>) at Stranger Point/Cabo Funes, South Shetland Islands
Juáres, Mariana Alejandra
Ciencias Naturales
Pygoscelis papua
Breeding pairs
Chicks crèched
Long-term trends
Antarctica
title_short Update of the population size and breeding performance of gentoo penguins (<i>Pygoscelis papua</i>) at Stranger Point/Cabo Funes, South Shetland Islands
title_full Update of the population size and breeding performance of gentoo penguins (<i>Pygoscelis papua</i>) at Stranger Point/Cabo Funes, South Shetland Islands
title_fullStr Update of the population size and breeding performance of gentoo penguins (<i>Pygoscelis papua</i>) at Stranger Point/Cabo Funes, South Shetland Islands
title_full_unstemmed Update of the population size and breeding performance of gentoo penguins (<i>Pygoscelis papua</i>) at Stranger Point/Cabo Funes, South Shetland Islands
title_sort Update of the population size and breeding performance of gentoo penguins (<i>Pygoscelis papua</i>) at Stranger Point/Cabo Funes, South Shetland Islands
dc.creator.none.fl_str_mv Juáres, Mariana Alejandra
Casaux, Ricardo Jorge
Negrete, Javier
Rios, Ayelen
Castillo, Martín
Coria, Néstor Rubén
Santos, María Mercedes
author Juáres, Mariana Alejandra
author_facet Juáres, Mariana Alejandra
Casaux, Ricardo Jorge
Negrete, Javier
Rios, Ayelen
Castillo, Martín
Coria, Néstor Rubén
Santos, María Mercedes
author_role author
author2 Casaux, Ricardo Jorge
Negrete, Javier
Rios, Ayelen
Castillo, Martín
Coria, Néstor Rubén
Santos, María Mercedes
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Pygoscelis papua
Breeding pairs
Chicks crèched
Long-term trends
Antarctica
topic Ciencias Naturales
Pygoscelis papua
Breeding pairs
Chicks crèched
Long-term trends
Antarctica
dc.description.none.fl_txt_mv The plasticity in the trophic ecology, the breeding phenology, and the low nesting site fidelity would be the reasons why most of the gentoo penguin (<i>Pygoscelis papua</i>) populations breeding in the western Antarctic Peninsula and islands of Scotia Arc remained stable or increasing, despite the changing environmental conditions. Regardless of the overall trend, recent studies revealed a decline in the abundance of some gentoo penguin populations at those regions. Therefore, it is highly valuable to update the population size of each colony in order to confirm the current trends of individual colonies and generate a comprehensive overview of the population status. We report the abundance and breeding performance of gentoo penguins at the Stranger Point/Cabo Funes colony from 2000/2001 to 2018/2019. During the last season, 5383 breeding pairs and 5545 chicks in creche were counted. Despite there were considerable inter-annual fluctuations over the study period, the total number of gentoo penguin breeding pairs increased by 74.6% (+ 3.1% per annum), while the number of chicks creched increased by 60.0% (+ 2.6% per annum). However, the index of breeding success remained relatively constant over time, varying between 0.74 and 1.23 chicks in creche/breeding pairs. Gentoo penguins have life-history strategies that are advantageous to face the environmental variability, allowing the species to maintain their breeding performance stable over time and enhance their resilience, which can favour the population growth at Stranger Point.
Facultad de Ciencias Naturales y Museo
description The plasticity in the trophic ecology, the breeding phenology, and the low nesting site fidelity would be the reasons why most of the gentoo penguin (<i>Pygoscelis papua</i>) populations breeding in the western Antarctic Peninsula and islands of Scotia Arc remained stable or increasing, despite the changing environmental conditions. Regardless of the overall trend, recent studies revealed a decline in the abundance of some gentoo penguin populations at those regions. Therefore, it is highly valuable to update the population size of each colony in order to confirm the current trends of individual colonies and generate a comprehensive overview of the population status. We report the abundance and breeding performance of gentoo penguins at the Stranger Point/Cabo Funes colony from 2000/2001 to 2018/2019. During the last season, 5383 breeding pairs and 5545 chicks in creche were counted. Despite there were considerable inter-annual fluctuations over the study period, the total number of gentoo penguin breeding pairs increased by 74.6% (+ 3.1% per annum), while the number of chicks creched increased by 60.0% (+ 2.6% per annum). However, the index of breeding success remained relatively constant over time, varying between 0.74 and 1.23 chicks in creche/breeding pairs. Gentoo penguins have life-history strategies that are advantageous to face the environmental variability, allowing the species to maintain their breeding performance stable over time and enhance their resilience, which can favour the population growth at Stranger Point.
publishDate 2020
dc.date.none.fl_str_mv 2020-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/145052
url http://sedici.unlp.edu.ar/handle/10915/145052
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0722-4060
info:eu-repo/semantics/altIdentifier/issn/1432-2056
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-019-02614-0
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
123-129
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1846783504120020992
score 12.982451

Publicaciones similares