Divergent responses of Pygoscelis penguins to unfavourable weather conditions in the South Shetland Islands
Pygoscelis penguins are valuable indicators of the effects of rapid warming in the Antarctic Peninsula. In the western Antarctic Peninsula, Adélie penguins show a declining population trend, whereas gentoo penguins are expanding. The notably low reproductive success of Adélie but not gentoo penguins...
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| Jazyk: | angličtina |
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2025
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| On-line přístup: | https://hdl.handle.net/20.500.12381/5341 https://doi.org/10.1017/S0954102025100291 |
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| _version_ | 1868890144236371968 |
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| author | Machado-Gaye, Ana Laura |
| author2 | Manta, Gaston Braun, Christina Menéndez-Blázquez, Javier Raslan, Maryam Zaldúa, Natalia Soutullo, Álvaro |
| author2_role | author author author author author author |
| author_browse | Braun, Christina Machado-Gaye, Ana Laura Manta, Gaston Menéndez-Blázquez, Javier Raslan, Maryam Soutullo, Álvaro Zaldúa, Natalia |
| author_facet | Machado-Gaye, Ana Laura Manta, Gaston Braun, Christina Menéndez-Blázquez, Javier Raslan, Maryam Zaldúa, Natalia Soutullo, Álvaro |
| author_role | author |
| collection | REDI |
| dc.creator.none.fl_str_mv | Machado-Gaye, Ana Laura Manta, Gaston Braun, Christina Menéndez-Blázquez, Javier Raslan, Maryam Zaldúa, Natalia Soutullo, Álvaro |
| dc.date.none.fl_str_mv | 2025-12-16T14:22:35Z 2025-12-16T14:22:35Z 2025-09 |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/20.500.12381/5341 FCE_1_2021_1_166587 POS_NAC_2021_1_169785 https://doi.org/10.1017/S0954102025100291 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Cambridge University Press |
| dc.relation.none.fl_str_mv | https://hdl.handle.net/20.500.12381/3928 https://hdl.handle.net/20.500.12381/3914 https://hdl.handle.net/20.500.12381/3913 https://hdl.handle.net/20.500.12381/3912 https://hdl.handle.net/20.500.12381/3903 https://hdl.handle.net/20.500.12381/3915 https://hdl.handle.net/20.500.12381/5241 |
| dc.rights.none.fl_str_mv | Acceso abierto info:eu-repo/semantics/openAccess Reconocimiento-SinObraDerivada 4.0 Internacional. (CC BY-ND) |
| dc.source.none.fl_str_mv | Antarctic Science reponame:REDI instname:Agencia Nacional de Investigación e Innovación instacron:Agencia Nacional de Investigación e Innovación |
| dc.subject.none.fl_str_mv | Breeding phenology Foraging trips King George Island Pygoscelis adeliae Pygoscelis papua Ciencias Naturales y Exactas Ciencias Biológicas Ecología |
| dc.title.none.fl_str_mv | Divergent responses of Pygoscelis penguins to unfavourable weather conditions in the South Shetland Islands |
| dc.type.none.fl_str_mv | Artículo info:eu-repo/semantics/article Publicado info:eu-repo/semantics/publishedVersion |
| description | Pygoscelis penguins are valuable indicators of the effects of rapid warming in the Antarctic Peninsula. In the western Antarctic Peninsula, Adélie penguins show a declining population trend, whereas gentoo penguins are expanding. The notably low reproductive success of Adélie but not gentoo penguins at Ardley Island during the 2023/2024 breeding season provided an opportunity to explore the potential effects of weather conditions and food availability as possible determinants of reproductive output. We explore associations between reproductive output, air temperature, wind speed, wind chill temperature and accumulated rain and snow. As a proxy for food availability, we used data of penguins’ foraging trips, which reflect krill abundance. A late-winter storm at the end of October 2023 led to a record-low wind chill temperature and sustained snow cover, negatively affecting the number of eggs that hatched successfully and/or the number of chicks that survived the first days after hatching. The effects were similar for both species, yet for gentoo penguins chick survival in the late stage of the chick-rearing phase was remarkably higher, possibly due to high food availability and a longer nestling period. As previously suggested, the greater plasticity of gentoo penguins may allow them to mitigate the negative effects of environmental variability, potentially explaining this divergent breeding success despite unusually harsh meteorological conditions. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | anni_9afcaa5441d4d9c6fc05d54e534bd8a1 |
| identifier_str_mv | FCE_1_2021_1_166587 POS_NAC_2021_1_169785 |
| instacron_str | Agencia Nacional de Investigación e Innovación |
| institution | Agencia Nacional de Investigación e Innovación |
| instname_str | Agencia Nacional de Investigación e Innovación |
| language | eng |
| network_acronym_str | anni |
| network_name_str | oai-lr-anni |
| oai_identifier_str | oai:redi.anii.org.uy:20.500.12381/5341 |
| publishDate | 2025 |
| publishDateSort | 2025 |
| publisher.none.fl_str_mv | Cambridge University Press |
| reponame_str | REDI |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | Acceso abierto Reconocimiento-SinObraDerivada 4.0 Internacional. (CC BY-ND) |
| spelling | Divergent responses of Pygoscelis penguins to unfavourable weather conditions in the South Shetland IslandsMachado-Gaye, Ana LauraManta, GastonBraun, ChristinaMenéndez-Blázquez, JavierRaslan, MaryamZaldúa, NataliaSoutullo, ÁlvaroBreeding phenologyForaging tripsKing George IslandPygoscelis adeliaePygoscelis papuaCiencias Naturales y ExactasCiencias BiológicasEcologíaPygoscelis penguins are valuable indicators of the effects of rapid warming in the Antarctic Peninsula. In the western Antarctic Peninsula, Adélie penguins show a declining population trend, whereas gentoo penguins are expanding. The notably low reproductive success of Adélie but not gentoo penguins at Ardley Island during the 2023/2024 breeding season provided an opportunity to explore the potential effects of weather conditions and food availability as possible determinants of reproductive output. We explore associations between reproductive output, air temperature, wind speed, wind chill temperature and accumulated rain and snow. As a proxy for food availability, we used data of penguins’ foraging trips, which reflect krill abundance. A late-winter storm at the end of October 2023 led to a record-low wind chill temperature and sustained snow cover, negatively affecting the number of eggs that hatched successfully and/or the number of chicks that survived the first days after hatching. The effects were similar for both species, yet for gentoo penguins chick survival in the late stage of the chick-rearing phase was remarkably higher, possibly due to high food availability and a longer nestling period. As previously suggested, the greater plasticity of gentoo penguins may allow them to mitigate the negative effects of environmental variability, potentially explaining this divergent breeding success despite unusually harsh meteorological conditions.Agencia Nacional de Investigación e InnovaciónEcos-Sud ProgramCommission for the Conservation of Antarctic Marine Living ResourcesCambridge University Press2025-12-16T14:22:35Z2025-12-16T14:22:35Z2025-09Artículoinfo:eu-repo/semantics/articlePublicadoinfo:eu-repo/semantics/publishedVersionhttps://hdl.handle.net/20.500.12381/5341FCE_1_2021_1_166587POS_NAC_2021_1_169785https://doi.org/10.1017/S0954102025100291Antarctic Sciencereponame:REDIinstname:Agencia Nacional de Investigación e Innovacióninstacron:Agencia Nacional de Investigación e Innovaciónenghttps://hdl.handle.net/20.500.12381/3928https://hdl.handle.net/20.500.12381/3914https://hdl.handle.net/20.500.12381/3913https://hdl.handle.net/20.500.12381/3912https://hdl.handle.net/20.500.12381/3903https://hdl.handle.net/20.500.12381/3915https://hdl.handle.net/20.500.12381/5241Acceso abiertoinfo:eu-repo/semantics/openAccessReconocimiento-SinObraDerivada 4.0 Internacional. (CC BY-ND)oai:redi.anii.org.uy:20.500.12381/53412026-06-16T05:02:55Z |
| spellingShingle | Divergent responses of Pygoscelis penguins to unfavourable weather conditions in the South Shetland Islands Machado-Gaye, Ana Laura Breeding phenology Foraging trips King George Island Pygoscelis adeliae Pygoscelis papua Ciencias Naturales y Exactas Ciencias Biológicas Ecología |
| status_str | publishedVersion |
| title | Divergent responses of Pygoscelis penguins to unfavourable weather conditions in the South Shetland Islands |
| title_full | Divergent responses of Pygoscelis penguins to unfavourable weather conditions in the South Shetland Islands |
| title_fullStr | Divergent responses of Pygoscelis penguins to unfavourable weather conditions in the South Shetland Islands |
| title_full_unstemmed | Divergent responses of Pygoscelis penguins to unfavourable weather conditions in the South Shetland Islands |
| title_short | Divergent responses of Pygoscelis penguins to unfavourable weather conditions in the South Shetland Islands |
| title_sort | Divergent responses of Pygoscelis penguins to unfavourable weather conditions in the South Shetland Islands |
| topic | Breeding phenology Foraging trips King George Island Pygoscelis adeliae Pygoscelis papua Ciencias Naturales y Exactas Ciencias Biológicas Ecología |
| url | https://hdl.handle.net/20.500.12381/5341 https://doi.org/10.1017/S0954102025100291 |