Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coast

Autores
Hombre, Jesica Daniela; Arias, Magdalena; Carrasco, Mauro Fabián; González, Raul Alberto Candido; Crespo, Enrique Alberto
Año de publicación
2026
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Magellanic penguin Spheniscus magellanicus is one of the emblematic species of the Argentine Atlantic coast, and its population dynamics provide valuable information for coastal ecosystem monitoring. Despite its wide distribution, colony abundance and spatial configuration along the Argentine coast have undergone significant changes in recent decades. This study aims to characterize the current status and trends of breeding colonies throughout its distribution along the Argentine Atlantic coast. Together with our own surveys we conducted an exhaustive literature review, integrating more than three decades of published and unpublished information on 65 active breeding colonies distributed from Río Negro to Tierra del Fuego, including the Malvinas/Falkland Islands. Abundance estimates were compiled and analyzed by colony, allowing for the evaluation of individual trends and the estimation of an overall population trend for the species in the country. While trends varied among individual colonies, the overall results indicate a moderate, although not statistically significant, multi-decadal population increase of approximately 2% per year, based on colony-specific trends derived from long-term monitoring data. Based on individual colony trends, total abundances were estimated, projecting approximately 1.28 million breeding pairs by the year 2024. Although regional differences were found, there is a sustained increase in the total number of active colonies, an expansion into new areas, and growth in several already established colonies. This result contrasts with previous perceptions of widespread decline and reinforces evidence of a reconfiguration in the species’ breeding distribution. These changes respond to a combination of ecological factors, dispersal processes, and variations in anthropogenic pressure. The findings highlight the importance of maintaining systematic monitoring programs and adapting conservation strategies to the spatial and temporal dynamism observed.
Fil: Hombre, Jesica Daniela. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; Argentina
Fil: Arias, Magdalena. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; Argentina
Fil: Carrasco, Mauro Fabián. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: González, Raul Alberto Candido. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; Argentina
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
Materia
Spheniscus magellanicus
Magellanic penguin
Population trends
Breeding colonies
Long-term monitoring
Southwest Atlantic
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/288123
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coastHombre, Jesica DanielaArias, MagdalenaCarrasco, Mauro FabiánGonzález, Raul Alberto CandidoCrespo, Enrique AlbertoSpheniscus magellanicusMagellanic penguinPopulation trendsBreeding coloniesLong-term monitoringSouthwest Atlantichttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The Magellanic penguin Spheniscus magellanicus is one of the emblematic species of the Argentine Atlantic coast, and its population dynamics provide valuable information for coastal ecosystem monitoring. Despite its wide distribution, colony abundance and spatial configuration along the Argentine coast have undergone significant changes in recent decades. This study aims to characterize the current status and trends of breeding colonies throughout its distribution along the Argentine Atlantic coast. Together with our own surveys we conducted an exhaustive literature review, integrating more than three decades of published and unpublished information on 65 active breeding colonies distributed from Río Negro to Tierra del Fuego, including the Malvinas/Falkland Islands. Abundance estimates were compiled and analyzed by colony, allowing for the evaluation of individual trends and the estimation of an overall population trend for the species in the country. While trends varied among individual colonies, the overall results indicate a moderate, although not statistically significant, multi-decadal population increase of approximately 2% per year, based on colony-specific trends derived from long-term monitoring data. Based on individual colony trends, total abundances were estimated, projecting approximately 1.28 million breeding pairs by the year 2024. Although regional differences were found, there is a sustained increase in the total number of active colonies, an expansion into new areas, and growth in several already established colonies. This result contrasts with previous perceptions of widespread decline and reinforces evidence of a reconfiguration in the species’ breeding distribution. These changes respond to a combination of ecological factors, dispersal processes, and variations in anthropogenic pressure. The findings highlight the importance of maintaining systematic monitoring programs and adapting conservation strategies to the spatial and temporal dynamism observed.Fil: Hombre, Jesica Daniela. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; ArgentinaFil: Arias, Magdalena. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; ArgentinaFil: Carrasco, Mauro Fabián. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: González, Raul Alberto Candido. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; ArgentinaFil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaSpringer2026-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/288123Hombre, Jesica Daniela; Arias, Magdalena; Carrasco, Mauro Fabián; González, Raul Alberto Candido; Crespo, Enrique Alberto; Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coast; Springer; Scientific Reports; 16; 1; 1-2026; 1-152045-2322CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/s41598-025-33756-3info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-025-33756-3info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:37:24Zoai:ri.conicet.gov.ar:11336/288123instacron: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:34982026-08-25 14:37:25.111CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coast
title Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coast
spellingShingle Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coast
Hombre, Jesica Daniela
Spheniscus magellanicus
Magellanic penguin
Population trends
Breeding colonies
Long-term monitoring
Southwest Atlantic
title_short Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coast
title_full Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coast
title_fullStr Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coast
title_full_unstemmed Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coast
title_sort Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coast
dc.creator.none.fl_str_mv Hombre, Jesica Daniela
Arias, Magdalena
Carrasco, Mauro Fabián
González, Raul Alberto Candido
Crespo, Enrique Alberto
author Hombre, Jesica Daniela
author_facet Hombre, Jesica Daniela
Arias, Magdalena
Carrasco, Mauro Fabián
González, Raul Alberto Candido
Crespo, Enrique Alberto
author_role author
author2 Arias, Magdalena
Carrasco, Mauro Fabián
González, Raul Alberto Candido
Crespo, Enrique Alberto
author2_role author
author
author
author
dc.subject.none.fl_str_mv Spheniscus magellanicus
Magellanic penguin
Population trends
Breeding colonies
Long-term monitoring
Southwest Atlantic
topic Spheniscus magellanicus
Magellanic penguin
Population trends
Breeding colonies
Long-term monitoring
Southwest Atlantic
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Magellanic penguin Spheniscus magellanicus is one of the emblematic species of the Argentine Atlantic coast, and its population dynamics provide valuable information for coastal ecosystem monitoring. Despite its wide distribution, colony abundance and spatial configuration along the Argentine coast have undergone significant changes in recent decades. This study aims to characterize the current status and trends of breeding colonies throughout its distribution along the Argentine Atlantic coast. Together with our own surveys we conducted an exhaustive literature review, integrating more than three decades of published and unpublished information on 65 active breeding colonies distributed from Río Negro to Tierra del Fuego, including the Malvinas/Falkland Islands. Abundance estimates were compiled and analyzed by colony, allowing for the evaluation of individual trends and the estimation of an overall population trend for the species in the country. While trends varied among individual colonies, the overall results indicate a moderate, although not statistically significant, multi-decadal population increase of approximately 2% per year, based on colony-specific trends derived from long-term monitoring data. Based on individual colony trends, total abundances were estimated, projecting approximately 1.28 million breeding pairs by the year 2024. Although regional differences were found, there is a sustained increase in the total number of active colonies, an expansion into new areas, and growth in several already established colonies. This result contrasts with previous perceptions of widespread decline and reinforces evidence of a reconfiguration in the species’ breeding distribution. These changes respond to a combination of ecological factors, dispersal processes, and variations in anthropogenic pressure. The findings highlight the importance of maintaining systematic monitoring programs and adapting conservation strategies to the spatial and temporal dynamism observed.
Fil: Hombre, Jesica Daniela. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; Argentina
Fil: Arias, Magdalena. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; Argentina
Fil: Carrasco, Mauro Fabián. Universidad Nacional del Comahue. Escuela de Ciencias Marinas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: González, Raul Alberto Candido. Universidad Nacional del Comahue. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". - Provincia de Río Negro. Ministerio de Agricultura, Ganadería y Pesca. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni". Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Centro Nacional Patagónico. Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni"; Argentina
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina
description The Magellanic penguin Spheniscus magellanicus is one of the emblematic species of the Argentine Atlantic coast, and its population dynamics provide valuable information for coastal ecosystem monitoring. Despite its wide distribution, colony abundance and spatial configuration along the Argentine coast have undergone significant changes in recent decades. This study aims to characterize the current status and trends of breeding colonies throughout its distribution along the Argentine Atlantic coast. Together with our own surveys we conducted an exhaustive literature review, integrating more than three decades of published and unpublished information on 65 active breeding colonies distributed from Río Negro to Tierra del Fuego, including the Malvinas/Falkland Islands. Abundance estimates were compiled and analyzed by colony, allowing for the evaluation of individual trends and the estimation of an overall population trend for the species in the country. While trends varied among individual colonies, the overall results indicate a moderate, although not statistically significant, multi-decadal population increase of approximately 2% per year, based on colony-specific trends derived from long-term monitoring data. Based on individual colony trends, total abundances were estimated, projecting approximately 1.28 million breeding pairs by the year 2024. Although regional differences were found, there is a sustained increase in the total number of active colonies, an expansion into new areas, and growth in several already established colonies. This result contrasts with previous perceptions of widespread decline and reinforces evidence of a reconfiguration in the species’ breeding distribution. These changes respond to a combination of ecological factors, dispersal processes, and variations in anthropogenic pressure. The findings highlight the importance of maintaining systematic monitoring programs and adapting conservation strategies to the spatial and temporal dynamism observed.
publishDate 2026
dc.date.none.fl_str_mv 2026-01
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/11336/288123
Hombre, Jesica Daniela; Arias, Magdalena; Carrasco, Mauro Fabián; González, Raul Alberto Candido; Crespo, Enrique Alberto; Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coast; Springer; Scientific Reports; 16; 1; 1-2026; 1-15
2045-2322
CONICET Digital
CONICET
url http://hdl.handle.net/11336/288123
identifier_str_mv Hombre, Jesica Daniela; Arias, Magdalena; Carrasco, Mauro Fabián; González, Raul Alberto Candido; Crespo, Enrique Alberto; Status and global population trend of the Magellanic penguin Spheniscus magellanicus along the Argentine coast; Springer; Scientific Reports; 16; 1; 1-2026; 1-15
2045-2322
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://www.nature.com/articles/s41598-025-33756-3
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-025-33756-3
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
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dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
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
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