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
2013
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Online Access: | https://doi.org/10.3402/polar.v32i0.18448 https://doaj.org/article/3e0384c6f8d84eeda021fa382f5349dd |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:3e0384c6f8d84eeda021fa382f5349dd 2023-05-15T13:42:32+02:00 Better late than never? Interannual and seasonal variability in breeding chronology of gentoo penguins at Stranger Point, Antarctica Mariana A. Juáres M. Mercedes Santos Javier Negrete M. Rita Santos Jorge A. Mennucci Emilce Rombolá Lucrecia Longarzo Néstor R. Coria Alejandro R. Carlini 2013-05-01 https://doi.org/10.3402/polar.v32i0.18448 https://doaj.org/article/3e0384c6f8d84eeda021fa382f5349dd en eng Norwegian Polar Institute doi:10.3402/polar.v32i0.18448 0800-0395 1751-8369 https://doaj.org/article/3e0384c6f8d84eeda021fa382f5349dd undefined Polar Research, Vol 32, Iss 0, Pp 1-11 (2013) Antarctica breeding delay breeding phenology snow Pygoscelis papua Euphausia superba geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2013 fttriple https://doi.org/10.3402/polar.v32i0.18448 2023-01-22T18:10:55Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Euphausia superba Gentoo penguin Isla 25 de Mayo King George Island Polar Research Pygoscelis papua Unknown 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) Antarctic Antarctic Peninsula isla 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) King George Island Stranger Point ENVELOPE(-58.618,-58.618,-62.262,-62.262) Polar Research 32 1 18448 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Antarctica breeding delay breeding phenology snow Pygoscelis papua Euphausia superba geo envir |
spellingShingle |
Antarctica breeding delay breeding phenology snow Pygoscelis papua Euphausia superba geo envir Mariana A. Juáres M. Mercedes Santos Javier Negrete M. Rita Santos Jorge A. Mennucci Emilce Rombolá Lucrecia Longarzo Néstor R. Coria Alejandro R. Carlini 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 geo envir |
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. |
format |
Article in Journal/Newspaper |
author |
Mariana A. Juáres M. Mercedes Santos Javier Negrete M. Rita Santos Jorge A. Mennucci Emilce Rombolá Lucrecia Longarzo Néstor R. Coria Alejandro R. Carlini |
author_facet |
Mariana A. Juáres M. Mercedes Santos Javier Negrete M. Rita Santos Jorge A. Mennucci Emilce Rombolá Lucrecia Longarzo Néstor R. Coria Alejandro R. Carlini |
author_sort |
Mariana A. Juáres |
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://doi.org/10.3402/polar.v32i0.18448 https://doaj.org/article/3e0384c6f8d84eeda021fa382f5349dd |
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 |
25 de Mayo Antarctic Antarctic Peninsula isla 25 de Mayo King George Island Stranger Point |
geographic_facet |
25 de Mayo Antarctic Antarctic Peninsula isla 25 de Mayo King George Island 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, Iss 0, Pp 1-11 (2013) |
op_relation |
doi:10.3402/polar.v32i0.18448 0800-0395 1751-8369 https://doaj.org/article/3e0384c6f8d84eeda021fa382f5349dd |
op_rights |
undefined |
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_ |
1766169045632024576 |