Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program

Autores
Juares, Mariana Alejandra; Silvestro, Anahí Mariel; Alfonso, Brenda C.; Santos, Maria Mercedes
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, we report long-term trends in the abundance and breeding performance of Adélie penguins (Pygoscelis adeliae) nesting in three Antarctic colonies (i.e., at Martin Point, South Orkneys Islands; Stranger Point/Cabo Funes, South Shetland Islands; and Esperanza/Hope Bay in the Antarctic Peninsula) from 1995/96 to 2022/23. Using yearly count data of breeding groups selected, we observed a decline in the number of breeding pairs and chicks in crèche at all colonies studied. However, the magnitude of change was higher at Stranger Point than that in the remaining colonies. Moreover, the index of breeding success, which was calculated as the ratio of chicks in crèche to breeding pairs, exhibited no apparent trend throughout the study period. However, it displayed greater variability at Martin Point compared to the other two colonies under investigation. Although the number of chicks in crèche of Adélie penguins showed a declining pattern, the average breeding performance was similar to that reported in gentoo penguin colonies, specifically, those undergoing a population increase (even in sympatric colonies facing similar local conditions). Consequently, it is plausible to assume a reduction of the over-winter survival as a likely cause of the declining trend observed, at least in the Stranger Point and Esperanza colonies. However, we cannot rule out local effects during the breeding season affecting the Adélie population of Martin Point.
Fil: Juares, Mariana Alejandra. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Silvestro, Anahí Mariel. Universidad Nacional de Luján. Instituto de Ecología y Desarrollo Sustentable. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Ecología y Desarrollo Sustentable; Argentina
Fil: Alfonso, Brenda C.. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Santos, Maria Mercedes. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
LONG-TERM MONITORING
ADÉLIE PENGUIN
BREEDING PAIRS
CHICKS CRÈCHED
BREEDING SUCCESS
POPULATION TRENDS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/235062
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/235062
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring ProgramJuares, Mariana AlejandraSilvestro, Anahí MarielAlfonso, Brenda C.Santos, Maria MercedesLONG-TERM MONITORINGADÉLIE PENGUINBREEDING PAIRSCHICKS CRÈCHEDBREEDING SUCCESSPOPULATION TRENDShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1In this work, we report long-term trends in the abundance and breeding performance of Adélie penguins (Pygoscelis adeliae) nesting in three Antarctic colonies (i.e., at Martin Point, South Orkneys Islands; Stranger Point/Cabo Funes, South Shetland Islands; and Esperanza/Hope Bay in the Antarctic Peninsula) from 1995/96 to 2022/23. Using yearly count data of breeding groups selected, we observed a decline in the number of breeding pairs and chicks in crèche at all colonies studied. However, the magnitude of change was higher at Stranger Point than that in the remaining colonies. Moreover, the index of breeding success, which was calculated as the ratio of chicks in crèche to breeding pairs, exhibited no apparent trend throughout the study period. However, it displayed greater variability at Martin Point compared to the other two colonies under investigation. Although the number of chicks in crèche of Adélie penguins showed a declining pattern, the average breeding performance was similar to that reported in gentoo penguin colonies, specifically, those undergoing a population increase (even in sympatric colonies facing similar local conditions). Consequently, it is plausible to assume a reduction of the over-winter survival as a likely cause of the declining trend observed, at least in the Stranger Point and Esperanza colonies. However, we cannot rule out local effects during the breeding season affecting the Adélie population of Martin Point.Fil: Juares, Mariana Alejandra. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Silvestro, Anahí Mariel. Universidad Nacional de Luján. Instituto de Ecología y Desarrollo Sustentable. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Ecología y Desarrollo Sustentable; ArgentinaFil: Alfonso, Brenda C.. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Santos, Maria Mercedes. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaAdvances in Polar Sciences2024-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/235062Juares, Mariana Alejandra; Silvestro, Anahí Mariel; Alfonso, Brenda C.; Santos, Maria Mercedes; Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program; Advances in Polar Sciences; Advances in Polar Science; 35; 3-2024; 132-1401674-9928CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://doi.org/10.12429/j.advps.2023.0027info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-12T09:35:41Zoai:ri.conicet.gov.ar:11336/235062instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-11-12 09:35:41.751CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program
title Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program
spellingShingle Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program
Juares, Mariana Alejandra
LONG-TERM MONITORING
ADÉLIE PENGUIN
BREEDING PAIRS
CHICKS CRÈCHED
BREEDING SUCCESS
POPULATION TRENDS
title_short Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program
title_full Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program
title_fullStr Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program
title_full_unstemmed Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program
title_sort Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program
dc.creator.none.fl_str_mv Juares, Mariana Alejandra
Silvestro, Anahí Mariel
Alfonso, Brenda C.
Santos, Maria Mercedes
author Juares, Mariana Alejandra
author_facet Juares, Mariana Alejandra
Silvestro, Anahí Mariel
Alfonso, Brenda C.
Santos, Maria Mercedes
author_role author
author2 Silvestro, Anahí Mariel
Alfonso, Brenda C.
Santos, Maria Mercedes
author2_role author
author
author
dc.subject.none.fl_str_mv LONG-TERM MONITORING
ADÉLIE PENGUIN
BREEDING PAIRS
CHICKS CRÈCHED
BREEDING SUCCESS
POPULATION TRENDS
topic LONG-TERM MONITORING
ADÉLIE PENGUIN
BREEDING PAIRS
CHICKS CRÈCHED
BREEDING SUCCESS
POPULATION TRENDS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this work, we report long-term trends in the abundance and breeding performance of Adélie penguins (Pygoscelis adeliae) nesting in three Antarctic colonies (i.e., at Martin Point, South Orkneys Islands; Stranger Point/Cabo Funes, South Shetland Islands; and Esperanza/Hope Bay in the Antarctic Peninsula) from 1995/96 to 2022/23. Using yearly count data of breeding groups selected, we observed a decline in the number of breeding pairs and chicks in crèche at all colonies studied. However, the magnitude of change was higher at Stranger Point than that in the remaining colonies. Moreover, the index of breeding success, which was calculated as the ratio of chicks in crèche to breeding pairs, exhibited no apparent trend throughout the study period. However, it displayed greater variability at Martin Point compared to the other two colonies under investigation. Although the number of chicks in crèche of Adélie penguins showed a declining pattern, the average breeding performance was similar to that reported in gentoo penguin colonies, specifically, those undergoing a population increase (even in sympatric colonies facing similar local conditions). Consequently, it is plausible to assume a reduction of the over-winter survival as a likely cause of the declining trend observed, at least in the Stranger Point and Esperanza colonies. However, we cannot rule out local effects during the breeding season affecting the Adélie population of Martin Point.
Fil: Juares, Mariana Alejandra. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Silvestro, Anahí Mariel. Universidad Nacional de Luján. Instituto de Ecología y Desarrollo Sustentable. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Ecología y Desarrollo Sustentable; Argentina
Fil: Alfonso, Brenda C.. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Santos, Maria Mercedes. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description In this work, we report long-term trends in the abundance and breeding performance of Adélie penguins (Pygoscelis adeliae) nesting in three Antarctic colonies (i.e., at Martin Point, South Orkneys Islands; Stranger Point/Cabo Funes, South Shetland Islands; and Esperanza/Hope Bay in the Antarctic Peninsula) from 1995/96 to 2022/23. Using yearly count data of breeding groups selected, we observed a decline in the number of breeding pairs and chicks in crèche at all colonies studied. However, the magnitude of change was higher at Stranger Point than that in the remaining colonies. Moreover, the index of breeding success, which was calculated as the ratio of chicks in crèche to breeding pairs, exhibited no apparent trend throughout the study period. However, it displayed greater variability at Martin Point compared to the other two colonies under investigation. Although the number of chicks in crèche of Adélie penguins showed a declining pattern, the average breeding performance was similar to that reported in gentoo penguin colonies, specifically, those undergoing a population increase (even in sympatric colonies facing similar local conditions). Consequently, it is plausible to assume a reduction of the over-winter survival as a likely cause of the declining trend observed, at least in the Stranger Point and Esperanza colonies. However, we cannot rule out local effects during the breeding season affecting the Adélie population of Martin Point.
publishDate 2024
dc.date.none.fl_str_mv 2024-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/235062
Juares, Mariana Alejandra; Silvestro, Anahí Mariel; Alfonso, Brenda C.; Santos, Maria Mercedes; Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program; Advances in Polar Sciences; Advances in Polar Science; 35; 3-2024; 132-140
1674-9928
CONICET Digital
CONICET
url http://hdl.handle.net/11336/235062
identifier_str_mv Juares, Mariana Alejandra; Silvestro, Anahí Mariel; Alfonso, Brenda C.; Santos, Maria Mercedes; Long-term trends in the abundance and breeding performance in Adélie penguins: the Argentine Ecosystem Monitoring Program; Advances in Polar Sciences; Advances in Polar Science; 35; 3-2024; 132-140
1674-9928
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://doi.org/10.12429/j.advps.2023.0027
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Advances in Polar Sciences
publisher.none.fl_str_mv Advances in Polar Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1848597209257345024
score 13.24909

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