Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/4441
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dc.contributor.authorFatemi, Mohammaden
dc.contributor.authorGross, Caroline Len
dc.date.accessioned2010-02-03T09:12:00Z
dc.date.issued2009en
dc.identifier.citationBiological Conservation, 142(7), p. 1461-1468en
dc.identifier.issn0006-3207en
dc.identifier.urihttps://hdl.handle.net/1959.11/4441en
dc.description.abstractWind-facilitated migration of new genotypes into small, geographically disjunct populations should buffer them against local extinction. 'Bertya ingramii', a monoecious, wind-pollinated shrub, is restricted to three populations in a 4 km² area in eastern Australia. Populations are separated by deeply dissected gorges where it is unlikely that seeds are exchanged but where wind movement may facilitate pollen dispersal. Using 156 highly polymorphic ISSR markers, we found moderate genetic variation within and among populations of 'B. ingramii' and less genetic diversity in a nearby and small population of the widespread 'Bertya rosmarinifolia'. The smallest population of 'B. ingramii' (<30 plants) had the highest genetic variation (65% polymorphic markers, Shannon Information Index = 0.30). AMOVA and a Bayesian analysis showed that molecular variance was equally distributed within and among populations suggesting that gene flow is as limited within as in among populations. Genetic distances between populations were only weakly explained by their relative geographic distances (mantel test, R² = 0.21, P = 0.001) but the distribution of private bands, the departure from Hardy–Weinberg equilibrium, and a UPGMA tree showed that the smallest population of 'B. ingramii' was generally more similar to an upstream population of 'B. rosmarinifolia'. Thirty-eight percent of bands in this small population of 'B. ingramii' were exclusively shared with 'B. rosmarinifolia'. This covert hybridisation may have been an ancient event but may be responsible for contemporary declines in germination and establishment in 'B. ingramii'. The conservation implications are amplified by the endangered status of 'B. ingramii'.en
dc.languageenen
dc.publisherElsevier Scienceen
dc.relation.ispartofBiological Conservationen
dc.titleLife on the edge – High levels of genetic diversity in a cliff population of 'Bertya ingramii' are attributed to 'B. rosmarinifolia' (Euphorbiaceae)en
dc.typeJournal Articleen
dc.identifier.doi10.1016/j.biocon.2009.02.014en
dc.subject.keywordsConservation and Biodiversityen
dc.subject.keywordsPopulation Ecologyen
dc.subject.keywordsWildlife and Habitat Managementen
local.contributor.firstnameMohammaden
local.contributor.firstnameCaroline Len
local.subject.for2008050202 Conservation and Biodiversityen
local.subject.for2008050211 Wildlife and Habitat Managementen
local.subject.for2008060207 Population Ecologyen
local.subject.seo2008961306 Remnant Vegetation and Protected Conservation Areas in Forest and Woodlands Environmentsen
local.subject.seo2008960906 Forest and Woodlands Land Managementen
local.subject.seo2008960810 Mountain and High Country Flora, Fauna and Biodiversityen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolUNE Business Schoolen
local.profile.emailmfatemi2@une.edu.auen
local.profile.emailcgross@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20090923-15251en
local.publisher.placeNew York, USAen
local.format.startpage1461en
local.format.endpage1468en
local.peerreviewedYesen
local.identifier.volume142en
local.identifier.issue7en
local.contributor.lastnameFatemien
local.contributor.lastnameGrossen
dc.identifier.staffune-id:mfatemi2en
dc.identifier.staffune-id:cgrossen
local.profile.orcid0000-0001-6618-4234en
local.profile.orcid0000-0001-8014-1548en
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:4546en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleLife on the edge – High levels of genetic diversity in a cliff population of 'Bertya ingramii' are attributed to 'B. rosmarinifolia' (Euphorbiaceae)en
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.description.statisticsepubsVisitors: 119<br />Views: 153<br />Downloads: 2en
local.search.authorFatemi, Mohammaden
local.search.authorGross, Caroline Len
Appears in Collections:Journal Article
School of Environmental and Rural Science
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