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Variability in sea ice cover and climate elicit sex specific responses in an Antarctic predator.

Identifieur interne : 000053 ( PubMed/Checkpoint ); précédent : 000052; suivant : 000054

Variability in sea ice cover and climate elicit sex specific responses in an Antarctic predator.

Auteurs : Sara Labrousse [France] ; Jean-Baptiste Sallée [France] ; Alexander D. Fraser [Japon] ; Rob A. Massom [Australie] ; Phillip Reid [Australie] ; William Hobbs [Australie] ; Christophe Guinet [France] ; Robert Harcourt [Australie] ; Clive Mcmahon [Australie] ; Matthieu Authier [France] ; Frédéric Bailleul [Australie] ; Mark A. Hindell [Australie] ; Jean-Benoit Charrassin [France]

Source :

RBID : pubmed:28233791

Abstract

Contrasting regional changes in Southern Ocean sea ice have occurred over the last 30 years with distinct regional effects on ecosystem structure and function. Quantifying how Antarctic predators respond to such changes provides the context for predicting how climate variability/change will affect these assemblages into the future. Over an 11-year time-series, we examine how inter-annual variability in sea ice concentration and advance affect the foraging behaviour of a top Antarctic predator, the southern elephant seal. Females foraged longer in pack ice in years with greatest sea ice concentration and earliest sea ice advance, while males foraged longer in polynyas in years of lowest sea ice concentration. There was a positive relationship between near-surface meridional wind anomalies and female foraging effort, but not for males. This study reveals the complexities of foraging responses to climate forcing by a poleward migratory predator through varying sea ice property and dynamic anomalies.

DOI: 10.1038/srep43236
PubMed: 28233791


Affiliations:


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Le document en format XML

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<div type="abstract" xml:lang="en">Contrasting regional changes in Southern Ocean sea ice have occurred over the last 30 years with distinct regional effects on ecosystem structure and function. Quantifying how Antarctic predators respond to such changes provides the context for predicting how climate variability/change will affect these assemblages into the future. Over an 11-year time-series, we examine how inter-annual variability in sea ice concentration and advance affect the foraging behaviour of a top Antarctic predator, the southern elephant seal. Females foraged longer in pack ice in years with greatest sea ice concentration and earliest sea ice advance, while males foraged longer in polynyas in years of lowest sea ice concentration. There was a positive relationship between near-surface meridional wind anomalies and female foraging effort, but not for males. This study reveals the complexities of foraging responses to climate forcing by a poleward migratory predator through varying sea ice property and dynamic anomalies.</div>
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<RefSource>Glob Chang Biol. 2012 Sep;18(9):2756-70</RefSource>
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<CommentsCorrections RefType="Cites">
<RefSource>Proc Biol Sci. 2014 Mar 11;281(1782):20132842</RefSource>
<PMID Version="1">24619437</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Proc Natl Acad Sci U S A. 2011 May 3;108(18):7625-8</RefSource>
<PMID Version="1">21482793</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Adv Mar Biol. 2002;43:171-276</RefSource>
<PMID Version="1">12154613</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>BMC Evol Biol. 2016 Mar 15;16:61</RefSource>
<PMID Version="1">26975876</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>PLoS One. 2013 May 21;8(5):e64756</RefSource>
<PMID Version="1">23705008</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>PLoS One. 2012;7(2):e31775</RefSource>
<PMID Version="1">22384073</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Proc Biol Sci. 2001 Feb 22;268(1465):377-84</RefSource>
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<CommentsCorrections RefType="Cites">
<RefSource>PLoS One. 2010 Nov 03;5(11):e13816</RefSource>
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</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>PLoS One. 2015 Oct 21;10(10):e0139877</RefSource>
<PMID Version="1">26488299</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>J Anim Ecol. 2009 Jul;78(4):699-714</RefSource>
<PMID Version="1">19298616</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Proc Natl Acad Sci U S A. 2006 Apr 18;103(16):6248-51</RefSource>
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