Antarctic climate change: extreme events disrupt plastic phenotypic response in Adélie penguins.

In the context of predicted alteration of sea ice cover and increased frequency of extreme events, it is especially timely to investigate plasticity within Antarctic species responding to a key environmental aspect of their ecology: sea ice variability. Using 13 years of longitudinal data, we invest...

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Autores principales:	Amélie Lescroël, Grant Ballard, David Grémillet, Matthieu Authier, David G Ainley
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/370c00eefb354eaaa7884ce2fc94a2c9
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spelling	oai:doaj.org-article:370c00eefb354eaaa7884ce2fc94a2c92021-11-18T08:35:14ZAntarctic climate change: extreme events disrupt plastic phenotypic response in Adélie penguins.1932-620310.1371/journal.pone.0085291https://doaj.org/article/370c00eefb354eaaa7884ce2fc94a2c92014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24489657/?tool=EBIhttps://doaj.org/toc/1932-6203In the context of predicted alteration of sea ice cover and increased frequency of extreme events, it is especially timely to investigate plasticity within Antarctic species responding to a key environmental aspect of their ecology: sea ice variability. Using 13 years of longitudinal data, we investigated the effect of sea ice concentration (SIC) on the foraging efficiency of Adélie penguins (Pygoscelis adeliae) breeding in the Ross Sea. A 'natural experiment' brought by the exceptional presence of giant icebergs during 5 consecutive years provided unprecedented habitat variation for testing the effects of extreme events on the relationship between SIC and foraging efficiency in this sea-ice dependent species. Significant levels of phenotypic plasticity were evident in response to changes in SIC in normal environmental conditions. Maximum foraging efficiency occurred at relatively low SIC, peaking at 6.1% and decreasing with higher SIC. The 'natural experiment' uncoupled efficiency levels from SIC variations. Our study suggests that lower summer SIC than currently observed would benefit the foraging performance of Adélie penguins in their southernmost breeding area. Importantly, it also provides evidence that extreme climatic events can disrupt response plasticity in a wild seabird population. This questions the predictive power of relationships built on past observations, when not only the average climatic conditions are changing but the frequency of extreme climatic anomalies is also on the rise.Amélie LescroëlGrant BallardDavid GrémilletMatthieu AuthierDavid G AinleyPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 1, p e85291 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Amélie Lescroël Grant Ballard David Grémillet Matthieu Authier David G Ainley Antarctic climate change: extreme events disrupt plastic phenotypic response in Adélie penguins.
description	In the context of predicted alteration of sea ice cover and increased frequency of extreme events, it is especially timely to investigate plasticity within Antarctic species responding to a key environmental aspect of their ecology: sea ice variability. Using 13 years of longitudinal data, we investigated the effect of sea ice concentration (SIC) on the foraging efficiency of Adélie penguins (Pygoscelis adeliae) breeding in the Ross Sea. A 'natural experiment' brought by the exceptional presence of giant icebergs during 5 consecutive years provided unprecedented habitat variation for testing the effects of extreme events on the relationship between SIC and foraging efficiency in this sea-ice dependent species. Significant levels of phenotypic plasticity were evident in response to changes in SIC in normal environmental conditions. Maximum foraging efficiency occurred at relatively low SIC, peaking at 6.1% and decreasing with higher SIC. The 'natural experiment' uncoupled efficiency levels from SIC variations. Our study suggests that lower summer SIC than currently observed would benefit the foraging performance of Adélie penguins in their southernmost breeding area. Importantly, it also provides evidence that extreme climatic events can disrupt response plasticity in a wild seabird population. This questions the predictive power of relationships built on past observations, when not only the average climatic conditions are changing but the frequency of extreme climatic anomalies is also on the rise.
format	article
author	Amélie Lescroël Grant Ballard David Grémillet Matthieu Authier David G Ainley
author_facet	Amélie Lescroël Grant Ballard David Grémillet Matthieu Authier David G Ainley
author_sort	Amélie Lescroël
title	Antarctic climate change: extreme events disrupt plastic phenotypic response in Adélie penguins.
title_short	Antarctic climate change: extreme events disrupt plastic phenotypic response in Adélie penguins.
title_full	Antarctic climate change: extreme events disrupt plastic phenotypic response in Adélie penguins.
title_fullStr	Antarctic climate change: extreme events disrupt plastic phenotypic response in Adélie penguins.
title_full_unstemmed	Antarctic climate change: extreme events disrupt plastic phenotypic response in Adélie penguins.
title_sort	antarctic climate change: extreme events disrupt plastic phenotypic response in adélie penguins.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/370c00eefb354eaaa7884ce2fc94a2c9
work_keys_str_mv	AT amelielescroel antarcticclimatechangeextremeeventsdisruptplasticphenotypicresponseinadeliepenguins AT grantballard antarcticclimatechangeextremeeventsdisruptplasticphenotypicresponseinadeliepenguins AT davidgremillet antarcticclimatechangeextremeeventsdisruptplasticphenotypicresponseinadeliepenguins AT matthieuauthier antarcticclimatechangeextremeeventsdisruptplasticphenotypicresponseinadeliepenguins AT davidgainley antarcticclimatechangeextremeeventsdisruptplasticphenotypicresponseinadeliepenguins
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Antarctic climate change: extreme events disrupt plastic phenotypic response in Adélie penguins.

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