Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern Chile

Autores
Godoy Reyes, Claudia; Munoz Peralta, Luis; Garcia Borboroglu, Jorge Pablo
Año de publicación
2019
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Magellanic penguins (Spheniscus magellanicus) breed along the southern coast of South America, from Islote Pájaro Niños in Chile (33°21’S) to Complejo Islote Lobos in Argentina (41°33’S). The largest colony known in Chile is located at Isla Magdalena (IM) (52°55’S), Monumento Natural Los Pinguinos, located at the Magellan Strait and the only one mainland colony is in Seno Otway (SO) (52°58’S). The colonies of this species show mixed population growth trends in different regions of its distribution and in many areas this information is missing. We present the results of our monitoring program, updating the population size for these colonies in the southern extreme of Chile and breeding performance of IM. For IM, population estimates were conducted through circular plots of 100sqm in 2011, 2014, 2017, and 2018 and for SO trough direct count in 2014. Breeding success was estimated following 74 to 207 nests during the reproductive seasons. Population size of both colonies showed a remarkable decline compared to previous reports: 85,4% for IM(2018) from 2007 and 89% for SO(2014) from 2003. Nesting density in our 30 sample plots decreased from 0,083 nest/sqm (2011) to 0,016 nest/sqm (2018). Breeding success was similar in the seasons, from 0,97 (2017) to 1,08 (2011). Depending of the year the cause of loss of chicks and eggs were predation and rain. A redistribution of this species has been reported for other latitudes and it is crucial to continue monitoring these colonies and conduct studies to increase our understanding of the drivers of these population decline.
Fil: Godoy Reyes, Claudia. Global Penguin Society; Estados Unidos
Fil: Munoz Peralta, Luis. Global Penguin Society; Estados Unidos
Fil: Garcia Borboroglu, Jorge Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Global Penguin Society; Estados Unidos
10th International Penguin Conference
Dunedin
Nueva Zelanda
University of Otago
Materia
MAGELLANIC PENGUINS
ISLA MAGDALENA
CHILE
DECLINE POPULATION SIZE
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:11336/182132
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/182132
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern ChileGodoy Reyes, ClaudiaMunoz Peralta, LuisGarcia Borboroglu, Jorge PabloMAGELLANIC PENGUINSISLA MAGDALENACHILEDECLINE POPULATION SIZEhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Magellanic penguins (Spheniscus magellanicus) breed along the southern coast of South America, from Islote Pájaro Niños in Chile (33°21’S) to Complejo Islote Lobos in Argentina (41°33’S). The largest colony known in Chile is located at Isla Magdalena (IM) (52°55’S), Monumento Natural Los Pinguinos, located at the Magellan Strait and the only one mainland colony is in Seno Otway (SO) (52°58’S). The colonies of this species show mixed population growth trends in different regions of its distribution and in many areas this information is missing. We present the results of our monitoring program, updating the population size for these colonies in the southern extreme of Chile and breeding performance of IM. For IM, population estimates were conducted through circular plots of 100sqm in 2011, 2014, 2017, and 2018 and for SO trough direct count in 2014. Breeding success was estimated following 74 to 207 nests during the reproductive seasons. Population size of both colonies showed a remarkable decline compared to previous reports: 85,4% for IM(2018) from 2007 and 89% for SO(2014) from 2003. Nesting density in our 30 sample plots decreased from 0,083 nest/sqm (2011) to 0,016 nest/sqm (2018). Breeding success was similar in the seasons, from 0,97 (2017) to 1,08 (2011). Depending of the year the cause of loss of chicks and eggs were predation and rain. A redistribution of this species has been reported for other latitudes and it is crucial to continue monitoring these colonies and conduct studies to increase our understanding of the drivers of these population decline.Fil: Godoy Reyes, Claudia. Global Penguin Society; Estados UnidosFil: Munoz Peralta, Luis. Global Penguin Society; Estados UnidosFil: Garcia Borboroglu, Jorge Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Global Penguin Society; Estados Unidos10th International Penguin ConferenceDunedinNueva ZelandaUniversity of OtagoInternational Penguin Congress2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/pdfhttp://hdl.handle.net/11336/182132Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern Chile; 10th International Penguin Conference; Dunedin; Nueva Zelanda; 2019; 44-44CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.penguin-conference.com/past-conferencesInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:03:02Zoai:ri.conicet.gov.ar:11336/182132instacron: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:34982025-09-03 10:03:02.714CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern Chile
title Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern Chile
spellingShingle Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern Chile
Godoy Reyes, Claudia
MAGELLANIC PENGUINS
ISLA MAGDALENA
CHILE
DECLINE POPULATION SIZE
title_short Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern Chile
title_full Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern Chile
title_fullStr Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern Chile
title_full_unstemmed Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern Chile
title_sort Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern Chile
dc.creator.none.fl_str_mv Godoy Reyes, Claudia
Munoz Peralta, Luis
Garcia Borboroglu, Jorge Pablo
author Godoy Reyes, Claudia
author_facet Godoy Reyes, Claudia
Munoz Peralta, Luis
Garcia Borboroglu, Jorge Pablo
author_role author
author2 Munoz Peralta, Luis
Garcia Borboroglu, Jorge Pablo
author2_role author
author
dc.subject.none.fl_str_mv MAGELLANIC PENGUINS
ISLA MAGDALENA
CHILE
DECLINE POPULATION SIZE
topic MAGELLANIC PENGUINS
ISLA MAGDALENA
CHILE
DECLINE POPULATION SIZE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Magellanic penguins (Spheniscus magellanicus) breed along the southern coast of South America, from Islote Pájaro Niños in Chile (33°21’S) to Complejo Islote Lobos in Argentina (41°33’S). The largest colony known in Chile is located at Isla Magdalena (IM) (52°55’S), Monumento Natural Los Pinguinos, located at the Magellan Strait and the only one mainland colony is in Seno Otway (SO) (52°58’S). The colonies of this species show mixed population growth trends in different regions of its distribution and in many areas this information is missing. We present the results of our monitoring program, updating the population size for these colonies in the southern extreme of Chile and breeding performance of IM. For IM, population estimates were conducted through circular plots of 100sqm in 2011, 2014, 2017, and 2018 and for SO trough direct count in 2014. Breeding success was estimated following 74 to 207 nests during the reproductive seasons. Population size of both colonies showed a remarkable decline compared to previous reports: 85,4% for IM(2018) from 2007 and 89% for SO(2014) from 2003. Nesting density in our 30 sample plots decreased from 0,083 nest/sqm (2011) to 0,016 nest/sqm (2018). Breeding success was similar in the seasons, from 0,97 (2017) to 1,08 (2011). Depending of the year the cause of loss of chicks and eggs were predation and rain. A redistribution of this species has been reported for other latitudes and it is crucial to continue monitoring these colonies and conduct studies to increase our understanding of the drivers of these population decline.
Fil: Godoy Reyes, Claudia. Global Penguin Society; Estados Unidos
Fil: Munoz Peralta, Luis. Global Penguin Society; Estados Unidos
Fil: Garcia Borboroglu, Jorge Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Global Penguin Society; Estados Unidos
10th International Penguin Conference
Dunedin
Nueva Zelanda
University of Otago
description Magellanic penguins (Spheniscus magellanicus) breed along the southern coast of South America, from Islote Pájaro Niños in Chile (33°21’S) to Complejo Islote Lobos in Argentina (41°33’S). The largest colony known in Chile is located at Isla Magdalena (IM) (52°55’S), Monumento Natural Los Pinguinos, located at the Magellan Strait and the only one mainland colony is in Seno Otway (SO) (52°58’S). The colonies of this species show mixed population growth trends in different regions of its distribution and in many areas this information is missing. We present the results of our monitoring program, updating the population size for these colonies in the southern extreme of Chile and breeding performance of IM. For IM, population estimates were conducted through circular plots of 100sqm in 2011, 2014, 2017, and 2018 and for SO trough direct count in 2014. Breeding success was estimated following 74 to 207 nests during the reproductive seasons. Population size of both colonies showed a remarkable decline compared to previous reports: 85,4% for IM(2018) from 2007 and 89% for SO(2014) from 2003. Nesting density in our 30 sample plots decreased from 0,083 nest/sqm (2011) to 0,016 nest/sqm (2018). Breeding success was similar in the seasons, from 0,97 (2017) to 1,08 (2011). Depending of the year the cause of loss of chicks and eggs were predation and rain. A redistribution of this species has been reported for other latitudes and it is crucial to continue monitoring these colonies and conduct studies to increase our understanding of the drivers of these population decline.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/182132
Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern Chile; 10th International Penguin Conference; Dunedin; Nueva Zelanda; 2019; 44-44
CONICET Digital
CONICET
url http://hdl.handle.net/11336/182132
identifier_str_mv Declines of population size and breeding performance of Magellanic penguins (Spheniscus magellanicus) in Magallanes Region, Southern Chile; 10th International Penguin Conference; Dunedin; Nueva Zelanda; 2019; 44-44
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.penguin-conference.com/past-conferences
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/vnd.openxmlformats-officedocument.wordprocessingml.document
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dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv International Penguin Congress
publisher.none.fl_str_mv International Penguin Congress
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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reponame_str CONICET Digital (CONICET)
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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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score 13.13397

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