Bio-physical characterisation of polynyas as a key foraging habitat for juvenile male southern elephant seals (Mirounga leonina) in Prydz Bay, East Antarctica.
Identifieur interne : 001116 ( PubMed/Checkpoint ); précédent : 001115; suivant : 001117Bio-physical characterisation of polynyas as a key foraging habitat for juvenile male southern elephant seals (Mirounga leonina) in Prydz Bay, East Antarctica.
Auteurs : Veda Malpress [Australie] ; Sophie Bestley [Australie] ; Stuart Corney [Australie] ; Dirk Welsford [Australie] ; Sara Labrousse [Australie] ; Michael Sumner [Australie] ; Mark Hindell [Australie]Source :
- PloS one [ 1932-6203 ] ; 2017.
Descripteurs français
- KwdFr :
- MESH :
- physiologie : Phoques.
- Animaux, Comportement alimentaire, Couche de glace, Mâle, Régions antarctiques, Saisons, Écosystème.
English descriptors
- KwdEn :
- MESH :
- physiology : Seals, Earless.
- Animals, Antarctic Regions, Ecosystem, Feeding Behavior, Ice Cover, Male, Seasons.
Abstract
Antarctic coastal polynyas are persistent open water areas in the sea ice zone, and regions of high biological productivity thought to be important foraging habitat for marine predators. This study quantified southern elephant seal (Mirounga leonina) habitat use within and around the polynyas of the Prydz Bay region (63°E- 88°E) in East Antarctica, and examined the bio-physical characteristics structuring polynyas as foraging habitat. Output from a climatological regional ocean model was used to provide context for in situ temperature-salinity vertical profiles collected by tagged elephant seals and to characterise the physical properties structuring polynyas. Biological properties were explored using remotely-sensed surface chlorophyll (Chl-a) and, qualitatively, historical fish assemblage data. Spatially gridded residence time of seals was examined in relation to habitat characteristics using generalized additive mixed models. The results showed clear polynya usage during early autumn and increasingly concentrated usage during early winter. Bathymetry, Chl-a, surface net heat flux (representing polynya location), and bottom temperature were identified as significant bio-physical predictors of the spatio-temporal habitat usage. The findings from this study confirm that the most important marine habitats for juvenile male southern elephant seals within Prydz Bay region are polynyas. A hypothesis exists regarding the seasonal evolution of primary productivity, coupling from surface to subsurface productivity and supporting elevated rates of secondary production in the upper water column during summer-autumn. An advancement to this hypothesis is proposed here, whereby this bio-physical coupling is likely to extend throughout the water column as it becomes fully convected during autumn-winter, to also promote pelagic-benthic linkages important for benthic foraging within polynyas.
DOI: 10.1371/journal.pone.0184536
PubMed: 28902905
Affiliations:
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Malpress</name><affiliation wicri:level="1"><nlm:affiliation>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania</wicri:regionArea><wicri:noRegion>Tasmania</wicri:noRegion></affiliation></author><author><name sortKey="Bestley, Sophie" sort="Bestley, Sophie" uniqKey="Bestley S" first="Sophie" last="Bestley">Sophie Bestley</name><affiliation wicri:level="1"><nlm:affiliation>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania</wicri:regionArea><wicri:noRegion>Tasmania</wicri:noRegion></affiliation></author><author><name sortKey="Corney, Stuart" sort="Corney, Stuart" uniqKey="Corney S" first="Stuart" last="Corney">Stuart Corney</name><affiliation wicri:level="1"><nlm:affiliation>Antarctic Climate & Ecosystem Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Antarctic Climate & Ecosystem Cooperative Research Centre, University of Tasmania, Hobart, Tasmania</wicri:regionArea><wicri:noRegion>Tasmania</wicri:noRegion></affiliation></author><author><name sortKey="Welsford, Dirk" sort="Welsford, Dirk" uniqKey="Welsford D" first="Dirk" last="Welsford">Dirk Welsford</name><affiliation wicri:level="1"><nlm:affiliation>Australian Antarctic Division, Department of Environment, Kingston, Tasmania, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Australian Antarctic Division, Department of Environment, Kingston, Tasmania</wicri:regionArea><wicri:noRegion>Tasmania</wicri:noRegion></affiliation></author><author><name 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Cover</term><term>Male</term><term>Seals, Earless (physiology)</term><term>Seasons</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Animaux</term><term>Comportement alimentaire</term><term>Couche de glace</term><term>Mâle</term><term>Phoques (physiologie)</term><term>Régions antarctiques</term><term>Saisons</term><term>Écosystème</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Phoques</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Seals, Earless</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Antarctic Regions</term><term>Ecosystem</term><term>Feeding Behavior</term><term>Ice Cover</term><term>Male</term><term>Seasons</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Animaux</term><term>Comportement alimentaire</term><term>Couche de glace</term><term>Mâle</term><term>Régions antarctiques</term><term>Saisons</term><term>Écosystème</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Antarctic coastal polynyas are persistent open water areas in the sea ice zone, and regions of high biological productivity thought to be important foraging habitat for marine predators. This study quantified southern elephant seal (Mirounga leonina) habitat use within and around the polynyas of the Prydz Bay region (63°E- 88°E) in East Antarctica, and examined the bio-physical characteristics structuring polynyas as foraging habitat. Output from a climatological regional ocean model was used to provide context for in situ temperature-salinity vertical profiles collected by tagged elephant seals and to characterise the physical properties structuring polynyas. Biological properties were explored using remotely-sensed surface chlorophyll (Chl-a) and, qualitatively, historical fish assemblage data. Spatially gridded residence time of seals was examined in relation to habitat characteristics using generalized additive mixed models. The results showed clear polynya usage during early autumn and increasingly concentrated usage during early winter. Bathymetry, Chl-a, surface net heat flux (representing polynya location), and bottom temperature were identified as significant bio-physical predictors of the spatio-temporal habitat usage. The findings from this study confirm that the most important marine habitats for juvenile male southern elephant seals within Prydz Bay region are polynyas. A hypothesis exists regarding the seasonal evolution of primary productivity, coupling from surface to subsurface productivity and supporting elevated rates of secondary production in the upper water column during summer-autumn. An advancement to this hypothesis is proposed here, whereby this bio-physical coupling is likely to extend throughout the water column as it becomes fully convected during autumn-winter, to also promote pelagic-benthic linkages important for benthic foraging within polynyas.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">28902905</PMID><DateCreated><Year>2017</Year><Month>09</Month><Day>13</Day></DateCreated><DateCompleted><Year>2017</Year><Month>10</Month><Day>24</Day></DateCompleted><DateRevised><Year>2017</Year><Month>10</Month><Day>24</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><ISSN IssnType="Electronic">1932-6203</ISSN><JournalIssue CitedMedium="Internet"><Volume>12</Volume><Issue>9</Issue><PubDate><Year>2017</Year></PubDate></JournalIssue><Title>PloS one</Title><ISOAbbreviation>PLoS ONE</ISOAbbreviation></Journal><ArticleTitle>Bio-physical characterisation of polynyas as a key foraging habitat for juvenile male southern elephant seals (Mirounga leonina) in Prydz Bay, East Antarctica.</ArticleTitle><Pagination><MedlinePgn>e0184536</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1371/journal.pone.0184536</ELocationID><Abstract><AbstractText>Antarctic coastal polynyas are persistent open water areas in the sea ice zone, and regions of high biological productivity thought to be important foraging habitat for marine predators. This study quantified southern elephant seal (Mirounga leonina) habitat use within and around the polynyas of the Prydz Bay region (63°E- 88°E) in East Antarctica, and examined the bio-physical characteristics structuring polynyas as foraging habitat. Output from a climatological regional ocean model was used to provide context for in situ temperature-salinity vertical profiles collected by tagged elephant seals and to characterise the physical properties structuring polynyas. Biological properties were explored using remotely-sensed surface chlorophyll (Chl-a) and, qualitatively, historical fish assemblage data. Spatially gridded residence time of seals was examined in relation to habitat characteristics using generalized additive mixed models. The results showed clear polynya usage during early autumn and increasingly concentrated usage during early winter. Bathymetry, Chl-a, surface net heat flux (representing polynya location), and bottom temperature were identified as significant bio-physical predictors of the spatio-temporal habitat usage. The findings from this study confirm that the most important marine habitats for juvenile male southern elephant seals within Prydz Bay region are polynyas. A hypothesis exists regarding the seasonal evolution of primary productivity, coupling from surface to subsurface productivity and supporting elevated rates of secondary production in the upper water column during summer-autumn. An advancement to this hypothesis is proposed here, whereby this bio-physical coupling is likely to extend throughout the water column as it becomes fully convected during autumn-winter, to also promote pelagic-benthic linkages important for benthic foraging within polynyas.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Malpress</LastName><ForeName>Veda</ForeName><Initials>V</Initials><Identifier Source="ORCID">http://orcid.org/0000-0002-5765-7236</Identifier><AffiliationInfo><Affiliation>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Antarctic Climate & Ecosystem Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Bestley</LastName><ForeName>Sophie</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Antarctic Climate & Ecosystem Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Australian Antarctic Division, Department of Environment, Kingston, Tasmania, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Corney</LastName><ForeName>Stuart</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Antarctic Climate & Ecosystem Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Welsford</LastName><ForeName>Dirk</ForeName><Initials>D</Initials><AffiliationInfo><Affiliation>Australian Antarctic Division, Department of Environment, Kingston, Tasmania, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Labrousse</LastName><ForeName>Sara</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Sorbonne Universités, UPMC University, Paris 06, UMR 7159 CNRS-IRD-MNHN, LOCEAN-IPSL, Paris, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Sumner</LastName><ForeName>Michael</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Antarctic Climate & Ecosystem Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Australian Antarctic Division, Department of Environment, Kingston, Tasmania, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hindell</LastName><ForeName>Mark</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Antarctic Climate & Ecosystem Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2017</Year><Month>09</Month><Day>13</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>PLoS One</MedlineTA><NlmUniqueID>101285081</NlmUniqueID><ISSNLinking>1932-6203</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><CommentsCorrectionsList><CommentsCorrections RefType="Cites"><RefSource>J Exp Biol. 2006 Sep;209(Pt 17):3420-8</RefSource><PMID Version="1">16916977</PMID></CommentsCorrections><CommentsCorrections RefType="Cites"><RefSource>Proc Natl Acad Sci U S A. 2008 Aug 19;105(33):11634-9</RefSource><PMID Version="1">18695241</PMID></CommentsCorrections><CommentsCorrections RefType="Cites"><RefSource>Vet Rec. 2002 Aug 24;151(8):235-40</RefSource><PMID Version="1">12219901</PMID></CommentsCorrections><CommentsCorrections RefType="Cites"><RefSource>Proc Biol Sci. 2013 Jan 7;280(1750):20122262</RefSource><PMID Version="1">23135676</PMID></CommentsCorrections><CommentsCorrections RefType="Cites"><RefSource>Philos Trans R Soc Lond B Biol Sci. 2007 Nov 29;362(1487):2169-81</RefSource><PMID Version="1">17472917</PMID></CommentsCorrections><CommentsCorrections RefType="Cites"><RefSource>Nat Commun. 2016 Aug 23;7:12577</RefSource><PMID Version="1">27552365</PMID></CommentsCorrections><CommentsCorrections RefType="Cites"><RefSource>Vet Rec. 2000 Feb 26;146(9):251-4</RefSource><PMID Version="1">10737295</PMID></CommentsCorrections><CommentsCorrections RefType="Cites"><RefSource>PLoS One. 2014 May 01;9(5):e95273</RefSource><PMID Version="1">24788513</PMID></CommentsCorrections><CommentsCorrections RefType="Cites"><RefSource>Ecology. 2010 Jan;91(1):273-85</RefSource><PMID Version="1">20380216</PMID></CommentsCorrections><CommentsCorrections RefType="Cites"><RefSource>Proc Natl Acad Sci U S A. 2007 Aug 21;104(34):13705-10</RefSource><PMID Version="1">17693555</PMID></CommentsCorrections><CommentsCorrections RefType="Cites"><RefSource>Nat Commun. 2014 Jul 07;5:4318</RefSource><PMID Version="1">25000452</PMID></CommentsCorrections><CommentsCorrections RefType="Cites"><RefSource>Ecology. 2011 Jun;92(6):1258-70</RefSource><PMID Version="1">21797154</PMID></CommentsCorrections><CommentsCorrections RefType="Cites"><RefSource>Sci Data. 2014 Sep 02;1:140028</RefSource><PMID Version="1">25977785</PMID></CommentsCorrections></CommentsCorrectionsList><MeshHeadingList><MeshHeading><DescriptorName UI="D000818" MajorTopicYN="N">Animals</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000864" MajorTopicYN="N">Antarctic Regions</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D017753" MajorTopicYN="Y">Ecosystem</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005247" MajorTopicYN="Y">Feeding Behavior</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D046448" MajorTopicYN="Y">Ice Cover</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008297" MajorTopicYN="N">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D046048" MajorTopicYN="N">Seals, Earless</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012621" MajorTopicYN="N">Seasons</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2016</Year><Month>10</Month><Day>03</Day></PubMedPubDate><PubMedPubDate 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last="Malpress">Veda Malpress</name></noRegion><name sortKey="Bestley, Sophie" sort="Bestley, Sophie" uniqKey="Bestley S" first="Sophie" last="Bestley">Sophie Bestley</name><name sortKey="Corney, Stuart" sort="Corney, Stuart" uniqKey="Corney S" first="Stuart" last="Corney">Stuart Corney</name><name sortKey="Hindell, Mark" sort="Hindell, Mark" uniqKey="Hindell M" first="Mark" last="Hindell">Mark Hindell</name><name sortKey="Labrousse, Sara" sort="Labrousse, Sara" uniqKey="Labrousse S" first="Sara" last="Labrousse">Sara Labrousse</name><name sortKey="Sumner, Michael" sort="Sumner, Michael" uniqKey="Sumner M" first="Michael" last="Sumner">Michael Sumner</name><name sortKey="Welsford, Dirk" sort="Welsford, Dirk" uniqKey="Welsford D" first="Dirk" last="Welsford">Dirk Welsford</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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