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dc.contributor.authorEl-ahmir, S.
dc.contributor.authorLim, S.L.
dc.contributor.authorLamont, Byron
dc.contributor.authorHe, Tianhua
dc.date.accessioned2017-01-30T12:30:03Z
dc.date.available2017-01-30T12:30:03Z
dc.date.created2015-08-16T20:00:36Z
dc.date.issued2015
dc.identifier.citationEl-ahmir, S. and Lim, S. and Lamont, B. and He, T. 2015. Seed Size, Fecundity and Postfire Regeneration Strategy Are Interdependent in Hakea. PLoS One. 10 (6): e0129027.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/22233
dc.identifier.doi10.1371/journal.pone.0129027
dc.description.abstract

Seed size is a key functional trait that affects plant fitness at the seedling stage and may vary greatly with species fruit size, growth form and fecundity. Using structural equation modelling (SEM) and correlated trait evolution analysis, we investigated the interaction network between seed size and fecundity, postfire regeneration strategy, fruit size, plant height and serotiny (on-plant seed storage) among 82 species of the woody shrub genus, Hakea, with a wide spectrum of seed sizes (2–500 mg). Seed size is negatively correlated with fecundity, while fire-killed species (nonsprouters) produce more seeds than resprouters though they are of similar size. Seed size is unrelated to plant height and level of serotiny while it scales allometrically with fruit size. A strong phylogenetic signal in seed size revealed phylogenetic constraints on seed size variation in Hakea. Our analyses suggest a causal relationship between seed size, fecundity and postfire regeneration strategy in Hakea. These results demonstrate that fruit size, fecundity and evolutionary history have had most control over seed size variation among Hakea species.

dc.publisherPublic Library of Science
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/DP120103389
dc.rights.urihttp://creativecommons.org/licenses/by/4.0
dc.titleSeed Size, Fecundity and Postfire Regeneration Strategy Are Interdependent in Hakea
dc.typeJournal Article
dcterms.source.volume10
dcterms.source.number6
dcterms.source.issn1932-6203
dcterms.source.titlePLoS One
curtin.departmentDepartment of Environment and Agriculture
curtin.accessStatusOpen access


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