Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/99341
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dc.contributor.authorWittmann, T.en
dc.contributor.authorIzzo, C.en
dc.contributor.authorDoubleday, Z.en
dc.contributor.authorMcKenzie, J.en
dc.contributor.authorDelean, S.en
dc.contributor.authorGillanders, B.en
dc.date.issued2016en
dc.identifier.citationMarine Biology, 2016; 163(4):71-1-71-11en
dc.identifier.issn0025-3162en
dc.identifier.issn1432-1793en
dc.identifier.urihttp://hdl.handle.net/2440/99341-
dc.description.abstractSclerochronological analysis of growth increment patterns (growth layer groups; GLG) in marine mammal teeth offers a unique opportunity to reconstruct climate– growth relations of marine mammal populations over long time series. We developed sclerochronologies from GLG width measures in the cementum of male and female New Zealand fur seal (Arctocephalus forsteri) post-canine teeth collected from southern Australia. Tooth growth chronologies spanned 15 years and encompassed the period from 1987 to 2001. We also developed a rigorous analytical framework for assessing species suitability for sclerochronological analyses. Suitability assessments indicated that GLG clarity and relative width measures were variable among regions within individual teeth, and therefore, measurements were standardised to a consistent tissue type. Deposition of cementum in post-canine teeth was also correlated with body size, suggesting tooth growth measures were a suitable proxy of somatic growth. Inter-annual patterns of tooth growth were negatively correlated with mean annual sea surface temperature and the Southern Oscillation Index (both lagged by 1 year), but the strength of the relationships differed between the sexes. These results suggest both local- and regional-scale physical processes influence variations in growth and provide the first evidence of an environmental effect on cementum growth in a marine mammal. This study demonstrates the underutilised potential of marine mammal teeth to provide extended time series of growth, critical information which facilitates predictions of future ecological response to environmental change.en
dc.description.statementofresponsibilityTalia A. Wittmann, Christopher Izzo, Zoë A. Doubleday, Jane McKenzie, Steven Delean, Bronwyn M. Gillandersen
dc.language.isoenen
dc.publisherSpringeren
dc.rights© Springer-Verlag Berlin Heidelberg 2016en
dc.titleReconstructing climate–growth relations from the teeth of a marine mammalen
dc.typeJournal articleen
dc.identifier.rmid0030045433en
dc.identifier.doi10.1007/s00227-016-2846-6en
dc.relation.granthttp://purl.org/au-research/grants/arc/FT100100767en
dc.relation.granthttp://purl.org/au-research/grants/arc/DP110100716en
dc.relation.granthttp://purl.org/au-research/grants/arc/LP120100228en
dc.identifier.pubid240262-
pubs.library.collectionEcology, Evolution and Landscape Science publicationsen
pubs.library.teamDS06en
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
Appears in Collections:Ecology, Evolution and Landscape Science publications

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