Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica
Rapid climate change recorded in the western Antarctic Peninsula confronts species with less predictable conditions in the marine and terrestrial environments. We analysed the breeding chronology and nesting site selection of gentoo penguins (Pygoscelis papua) at King George Island (Isla 25 de Mayo)...
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Norwegian Polar Institute
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ftjpolarres:oai:journals.openacademia.net:article/3113 2024-09-09T19:10:16+00:00 Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica Juáres, Mariana A. Santos, M. Mercedes Negrete, Javier Santos, M. Rita Mennucci, Jorge A. Rombolá, Emilce Longarzo, Lucrecia Coria, Néstor R. Carlini, Alejandro R. 2013-05-13 application/pdf text/html application/epub+zip text/plain https://polarresearch.net/index.php/polar/article/view/3113 https://doi.org/10.3402/polar.v32i0.18448 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/3113/pdf_1 https://polarresearch.net/index.php/polar/article/view/3113/html https://polarresearch.net/index.php/polar/article/view/3113/epub https://polarresearch.net/index.php/polar/article/view/3113/7165 https://polarresearch.net/index.php/polar/article/view/3113 doi:10.3402/polar.v32i0.18448 Polar Research; Vol 32 (2013) 1751-8369 Antarctica breeding delay breeding phenology snow Pygoscelis papua Euphausia superba info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2013 ftjpolarres https://doi.org/10.3402/polar.v32i0.18448 2024-06-20T23:33:17Z Rapid climate change recorded in the western Antarctic Peninsula confronts species with less predictable conditions in the marine and terrestrial environments. We analysed the breeding chronology and nesting site selection of gentoo penguins (Pygoscelis papua) at King George Island (Isla 25 de Mayo), Antarctica, during four seasons in which differences in snow presence and persistence on the ground were observed. We recorded an overall delay as well as seasonal asynchrony at the beginning of reproduction for those years with higher snow deposition. A redistribution of breeding groups was also observed. Nevertheless, the population breeding success and chicks’ weight at fledging remained relatively constant, despite the delay in breeding chronology, the increased duration of foraging trips during the guard stage and the decreased weight of stomach contents during the crèche stage. We suggest that the plasticity of their trophic biology, along with the flexibility of their breeding phenology and relocation of breeding groups, may be complementary reasons why gentoo penguin populations in the region have remained stable in spite of the changing conditions currently registered.Keywords: Antarctica; breeding delay; breeding phenology; snow; Pygoscelis papua; Euphausia superba (Published: 13 May 2013)Citation: Polar Research 2013, 32, 18448, http://dx.doi.org/10.3402/polar.v32i0.18448 Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Euphausia superba Gentoo penguin Isla 25 de Mayo King George Island Polar Research Pygoscelis papua Polar Research Antarctic Antarctic Peninsula King George Island 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) isla 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) Stranger Point ENVELOPE(-58.618,-58.618,-62.262,-62.262) Polar Research 32 1 18448 |
institution |
Open Polar |
collection |
Polar Research |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Antarctica breeding delay breeding phenology snow Pygoscelis papua Euphausia superba |
spellingShingle |
Antarctica breeding delay breeding phenology snow Pygoscelis papua Euphausia superba Juáres, Mariana A. Santos, M. Mercedes Negrete, Javier Santos, M. Rita Mennucci, Jorge A. Rombolá, Emilce Longarzo, Lucrecia Coria, Néstor R. Carlini, Alejandro R. Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica |
topic_facet |
Antarctica breeding delay breeding phenology snow Pygoscelis papua Euphausia superba |
description |
Rapid climate change recorded in the western Antarctic Peninsula confronts species with less predictable conditions in the marine and terrestrial environments. We analysed the breeding chronology and nesting site selection of gentoo penguins (Pygoscelis papua) at King George Island (Isla 25 de Mayo), Antarctica, during four seasons in which differences in snow presence and persistence on the ground were observed. We recorded an overall delay as well as seasonal asynchrony at the beginning of reproduction for those years with higher snow deposition. A redistribution of breeding groups was also observed. Nevertheless, the population breeding success and chicks’ weight at fledging remained relatively constant, despite the delay in breeding chronology, the increased duration of foraging trips during the guard stage and the decreased weight of stomach contents during the crèche stage. We suggest that the plasticity of their trophic biology, along with the flexibility of their breeding phenology and relocation of breeding groups, may be complementary reasons why gentoo penguin populations in the region have remained stable in spite of the changing conditions currently registered.Keywords: Antarctica; breeding delay; breeding phenology; snow; Pygoscelis papua; Euphausia superba (Published: 13 May 2013)Citation: Polar Research 2013, 32, 18448, http://dx.doi.org/10.3402/polar.v32i0.18448 |
format |
Article in Journal/Newspaper |
author |
Juáres, Mariana A. Santos, M. Mercedes Negrete, Javier Santos, M. Rita Mennucci, Jorge A. Rombolá, Emilce Longarzo, Lucrecia Coria, Néstor R. Carlini, Alejandro R. |
author_facet |
Juáres, Mariana A. Santos, M. Mercedes Negrete, Javier Santos, M. Rita Mennucci, Jorge A. Rombolá, Emilce Longarzo, Lucrecia Coria, Néstor R. Carlini, Alejandro R. |
author_sort |
Juáres, Mariana A. |
title |
Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica |
title_short |
Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica |
title_full |
Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica |
title_fullStr |
Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica |
title_full_unstemmed |
Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica |
title_sort |
better late than never? interannual and seasonal variability in breeding chronology of gentoo penguins at stranger point, antarctica |
publisher |
Norwegian Polar Institute |
publishDate |
2013 |
url |
https://polarresearch.net/index.php/polar/article/view/3113 https://doi.org/10.3402/polar.v32i0.18448 |
long_lat |
ENVELOPE(-58.000,-58.000,-62.083,-62.083) ENVELOPE(-58.000,-58.000,-62.083,-62.083) ENVELOPE(-58.618,-58.618,-62.262,-62.262) |
geographic |
Antarctic Antarctic Peninsula King George Island 25 de Mayo isla 25 de Mayo Stranger Point |
geographic_facet |
Antarctic Antarctic Peninsula King George Island 25 de Mayo isla 25 de Mayo Stranger Point |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Euphausia superba Gentoo penguin Isla 25 de Mayo King George Island Polar Research Pygoscelis papua |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Euphausia superba Gentoo penguin Isla 25 de Mayo King George Island Polar Research Pygoscelis papua |
op_source |
Polar Research; Vol 32 (2013) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/3113/pdf_1 https://polarresearch.net/index.php/polar/article/view/3113/html https://polarresearch.net/index.php/polar/article/view/3113/epub https://polarresearch.net/index.php/polar/article/view/3113/7165 https://polarresearch.net/index.php/polar/article/view/3113 doi:10.3402/polar.v32i0.18448 |
op_doi |
https://doi.org/10.3402/polar.v32i0.18448 |
container_title |
Polar Research |
container_volume |
32 |
container_issue |
1 |
container_start_page |
18448 |
_version_ |
1809825004844482560 |