Where did all the trees come from? A novel multispecies approach reveals the impacts of biogeographical history and functional diversity on rain forest assembly

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dc.contributor.authorRossetto, M.
dc.contributor.authorMcpherson, H.
dc.contributor.authorSiow, J.
dc.contributor.authorKooyman, R.
dc.contributor.authorvan der Merwe, M.
dc.contributor.authorWilson, P.
dc.date.issued2015
dc.descriptionArticle first published online: 24 JUL 2015
dc.description.abstractAim: We take advantage of next generation sequencing-based technology to assess how landscape-level dynamics, biogeographical history and functional factors shape the distribution of genetic diversity in rain forest trees. To achieve this, we explore chloroplast genomic diversity and divergence patterns across multiple, co-distributed species from three major centres of rain forest diversity. Location Subtropical rain forests in south-eastern Australia: Nightcap–Border Ranges, Dorrigo and Washpool. Methods: We assembled chloroplast genomic data from whole-genome shotgun libraries for 71 species collected across three major centres of rain forest diversity. Chloroplast single nucleotide polymorphisms were used to measure genetic variation within and between multiple populations, species and locations, and we used this information to identify patterns related to landscape-level processes, biogeographical origins and functional characteristics. Results: We identified Nightcap–Border Ranges and Dorrigo as containing multiple refugia and Washpool as primarily a recolonized area. We found that rapidly expanding lineages of Indo-Malesian origin exhibit significantly lower levels of genetic diversity than Gondwanan lineages with longer local histories. Functional traits related to persistence and dispersal were the most important in regulating the distribution of genetic diversity. Main conclusions: The distribution and assembly of species reflect interactions and competition between different floristic elements at different stages of continental occupation. Additionally, given the multiple evolutionary origins and histories of the Australian rain forest flora, it is important to avoid treating rain forest communities as single management units.
dc.description.statementofresponsibilityMaurizio Rossetto, Hannah McPherson, Juelian Siow, Robert Kooyman, Marlien van der Merwe and Peter D. Wilson
dc.identifier.citationJournal of Biogeography, 2015; 42(11):2172-2186
dc.identifier.doi10.1111/jbi.12571
dc.identifier.issn0305-0270
dc.identifier.issn1365-2699
dc.identifier.urihttp://hdl.handle.net/2440/97728
dc.language.isoen
dc.publisherWiley
dc.rights© 2015 John Wiley & Sons Ltd
dc.source.urihttps://doi.org/10.1111/jbi.12571
dc.subjectAustralia; chloroplast genome; functional traits; Gondwana; Indo-Malesia; next generation sequencing; refugia; single nucleotide polymorphisms
dc.titleWhere did all the trees come from? A novel multispecies approach reveals the impacts of biogeographical history and functional diversity on rain forest assembly
dc.typeJournal article
pubs.publication-statusPublished

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