Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/27152
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dc.contributor.authorWorth, James R Pen
dc.contributor.authorSakaguchi, Shotaen
dc.contributor.authorHarrison, Peter Aen
dc.contributor.authorBruniche-Olsen, Annaen
dc.contributor.authorJanes, Jasmine Ken
dc.contributor.authorCrisp, Michael Den
dc.contributor.authorBowman, David M J Sen
dc.date.accessioned2019-06-14T05:03:07Z-
dc.date.available2019-06-14T05:03:07Z-
dc.date.issued2018-11-
dc.identifier.citationBiological Journal of the Linnean Society, 125(3), p. 459-474en
dc.identifier.issn1095-8312en
dc.identifier.issn0024-4066en
dc.identifier.urihttps://hdl.handle.net/1959.11/27152-
dc.description.abstractThe eastern Australian temperate biota harbours many plants with fragmented geographic ranges distributed over 1000s of kilometres, yet the spatial genetic structure of their populations remains largely unstudied. In this study, we investigated genetic variation of the nuclear internal transcribed spacer (ITS) and chloroplast DNA sequences to disentangle the phylogeography of two widely distributed but highly fragmented eastern Australian fire-sensitive temperate conifers: Callitris oblonga (12 populations and 121 individuals) and C. rhomboidea (22 populations and 263 individuals). The three highly disjunct populations of C. oblonga all had unique chloroplast and ITS haplotypes consistent with the classification of these three populations as distinct subspecies. Molecular dating indicates that divergences of these populations occurred pre- to mid- Pleistocene (2.66 to 1.08 mya). Callitris rhomboidea showed greater diversity of chloroplast haplotypes which was strongly phylogeographically structured (Gst = 0.972), with haplotypes unique to specific geographic regions. ITS haplotype diversity was far higher than in C. oblonga with 38 haplotypes displaying high geographic structuring (Gst = 0.387) with many population-specific haplotypes. A phylogeographic break was identified between populations north and south of eastern Victoria dated at 0.43-0.47 mya. In both species, the strong genetic structuring of both chloroplast and ITS haplotypes provides evidence that their widespread ranges have resulted from long term persistence in low fire frequency refugia combined with poor dispersal. Any loss of populations due to increasing fire frequency or habitat loss is likely to result in a reduction of genetic diversity.en
dc.languageenen
dc.publisherOxford University Pressen
dc.relation.ispartofBiological Journal of the Linnean Societyen
dc.titlePleistocene divergence of two disjunct conifers in the eastern Australian temperate zoneen
dc.typeJournal Articleen
dc.identifier.doi10.1093/biolinnean/bly127en
local.contributor.firstnameJames R Pen
local.contributor.firstnameShotaen
local.contributor.firstnamePeter Aen
local.contributor.firstnameAnnaen
local.contributor.firstnameJasmine Ken
local.contributor.firstnameMichael Den
local.contributor.firstnameDavid M J Sen
local.relation.isfundedbyARCen
local.subject.for2008060799 Plant Biology not elsewhere classifieden
local.subject.for2008060302 Biogeography and Phylogeographyen
local.subject.seo2008820199 Forestry not elsewhere classifieden
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailjjanes@une.edu.auen
local.output.categoryC1en
local.grant.numberDP150101777en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.publisher.placeUnited Kingdomen
local.format.startpage459en
local.format.endpage474en
local.peerreviewedYesen
local.identifier.volume125en
local.identifier.issue3en
local.contributor.lastnameWorthen
local.contributor.lastnameSakaguchien
local.contributor.lastnameHarrisonen
local.contributor.lastnameBruniche-Olsenen
local.contributor.lastnameJanesen
local.contributor.lastnameCrispen
local.contributor.lastnameBowmanen
dc.identifier.staffune-id:jjanesen
local.profile.orcid0000-0002-4511-2087en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:1959.11/27152en
local.date.onlineversion2018-09-13-
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitlePleistocene divergence of two disjunct conifers in the eastern Australian temperate zoneen
local.relation.fundingsourcenoteForestry and Forest Products Research (grant number 201430)en
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.relation.grantdescriptionARC/DP150101777en
local.search.authorWorth, James R Pen
local.search.authorSakaguchi, Shotaen
local.search.authorHarrison, Peter Aen
local.search.authorBruniche-Olsen, Annaen
local.search.authorJanes, Jasmine Ken
local.search.authorCrisp, Michael Den
local.search.authorBowman, David M J Sen
local.uneassociationUnknownen
local.identifier.wosid000450043000001en
local.year.available2018en
local.year.published2018en
local.fileurl.closedpublishedhttps://rune.une.edu.au/web/retrieve/0e21005b-2186-47b2-828f-f57247b414ccen
local.subject.for2020310402 Biogeography and phylogeographyen
local.subject.seo2020260299 Forestry not elsewhere classifieden
dc.notification.token4131aeae-6250-4d53-8f67-29872ab1a0e1en
Appears in Collections:Journal Article
School of Environmental and Rural Science
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