Update of the population size and breeding performance of gentoo penguins (Pygoscelis papua) at Stranger Point/Cabo Funes, South Shetland Islands
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 changin...
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ftconicet:oai:ri.conicet.gov.ar:11336/175606 2023-10-09T21:47:14+02:00 Update of the population size and breeding performance of gentoo penguins (Pygoscelis papua) at Stranger Point/Cabo Funes, South Shetland Islands Juares, Mariana Alejandra Casaux, Ricardo Jorge Negrete, Javier Rios, Ayelen Castillo, Martin Coria, Néstor Rubén Santos, Maria Mercedes application/pdf http://hdl.handle.net/11336/175606 eng eng Springer info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00300-019-02614-0 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-019-02614-0 http://hdl.handle.net/11336/175606 Juares, Mariana Alejandra; Casaux, Ricardo Jorge; Negrete, Javier; Rios, Ayelen; Castillo, Martin; et al.; Update of the population size and breeding performance of gentoo penguins (Pygoscelis papua) at Stranger Point/Cabo Funes, South Shetland Islands; Springer; Polar Biology; 43; 2; 12-2019; 123-129 0722-4060 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ANTARCTICA BREEDING PAIRS CHICKS CRÈCHED LONG-TERM TRENDS PYGOSCELIS PAPUA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1007/s00300-019-02614-0 2023-09-24T19:24:53Z 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 crèche 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 crèched 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 crèche/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. Fil: Juares, Mariana Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina Fil: Casaux, Ricardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Dirección Nacional del Antártico Gentoo penguin Instituto Antártico Argentino Polar Biology Pygoscelis papua South Shetland Islands CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Antarctic Peninsula Patagonia South Shetland Islands Argentino Argentina Ricardo ENVELOPE(-63.033,-63.033,-64.867,-64.867) Stranger Point ENVELOPE(-58.618,-58.618,-62.262,-62.262) Funes ENVELOPE(-58.617,-58.617,-62.250,-62.250) cabo Funes ENVELOPE(-58.617,-58.617,-62.250,-62.250) Polar Biology 43 2 123 129 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ANTARCTICA BREEDING PAIRS CHICKS CRÈCHED LONG-TERM TRENDS PYGOSCELIS PAPUA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
ANTARCTICA BREEDING PAIRS CHICKS CRÈCHED LONG-TERM TRENDS PYGOSCELIS PAPUA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Juares, Mariana Alejandra Casaux, Ricardo Jorge Negrete, Javier Rios, Ayelen Castillo, Martin Coria, Néstor Rubén Santos, Maria Mercedes Update of the population size and breeding performance of gentoo penguins (Pygoscelis papua) at Stranger Point/Cabo Funes, South Shetland Islands |
topic_facet |
ANTARCTICA BREEDING PAIRS CHICKS CRÈCHED LONG-TERM TRENDS PYGOSCELIS PAPUA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
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 (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 crèche 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 crèched 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 crèche/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. Fil: Juares, Mariana Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina Fil: Casaux, Ricardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación ... |
format |
Article in Journal/Newspaper |
author |
Juares, Mariana Alejandra Casaux, Ricardo Jorge Negrete, Javier Rios, Ayelen Castillo, Martin Coria, Néstor Rubén Santos, Maria Mercedes |
author_facet |
Juares, Mariana Alejandra Casaux, Ricardo Jorge Negrete, Javier Rios, Ayelen Castillo, Martin Coria, Néstor Rubén Santos, Maria Mercedes |
author_sort |
Juares, Mariana Alejandra |
title |
Update of the population size and breeding performance of gentoo penguins (Pygoscelis papua) at Stranger Point/Cabo Funes, South Shetland Islands |
title_short |
Update of the population size and breeding performance of gentoo penguins (Pygoscelis papua) at Stranger Point/Cabo Funes, South Shetland Islands |
title_full |
Update of the population size and breeding performance of gentoo penguins (Pygoscelis papua) at Stranger Point/Cabo Funes, South Shetland Islands |
title_fullStr |
Update of the population size and breeding performance of gentoo penguins (Pygoscelis papua) at Stranger Point/Cabo Funes, South Shetland Islands |
title_full_unstemmed |
Update of the population size and breeding performance of gentoo penguins (Pygoscelis papua) at Stranger Point/Cabo Funes, South Shetland Islands |
title_sort |
update of the population size and breeding performance of gentoo penguins (pygoscelis papua) at stranger point/cabo funes, south shetland islands |
publisher |
Springer |
url |
http://hdl.handle.net/11336/175606 |
long_lat |
ENVELOPE(-63.033,-63.033,-64.867,-64.867) ENVELOPE(-58.618,-58.618,-62.262,-62.262) ENVELOPE(-58.617,-58.617,-62.250,-62.250) ENVELOPE(-58.617,-58.617,-62.250,-62.250) |
geographic |
Antarctic Antarctic Peninsula Patagonia South Shetland Islands Argentino Argentina Ricardo Stranger Point Funes cabo Funes |
geographic_facet |
Antarctic Antarctic Peninsula Patagonia South Shetland Islands Argentino Argentina Ricardo Stranger Point Funes cabo Funes |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Dirección Nacional del Antártico Gentoo penguin Instituto Antártico Argentino Polar Biology Pygoscelis papua South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Dirección Nacional del Antártico Gentoo penguin Instituto Antártico Argentino Polar Biology Pygoscelis papua South Shetland Islands |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00300-019-02614-0 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-019-02614-0 http://hdl.handle.net/11336/175606 Juares, Mariana Alejandra; Casaux, Ricardo Jorge; Negrete, Javier; Rios, Ayelen; Castillo, Martin; et al.; Update of the population size and breeding performance of gentoo penguins (Pygoscelis papua) at Stranger Point/Cabo Funes, South Shetland Islands; Springer; Polar Biology; 43; 2; 12-2019; 123-129 0722-4060 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s00300-019-02614-0 |
container_title |
Polar Biology |
container_volume |
43 |
container_issue |
2 |
container_start_page |
123 |
op_container_end_page |
129 |
_version_ |
1779310196663779328 |