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dc.contributor.authorProches, S.
dc.contributor.authorWilson, J.R.U.
dc.contributor.authorCowling, R.M.
dc.date.accessioned2007-03-28T08:46:49Z
dc.date.available2007-03-28T08:46:49Z
dc.date.issued2006
dc.identifier.citationProches, S., Wilson, J.R.U. and Cowling, R.M. (2006). How much evolutionary history in a 10x10 m plot?. Proceedings of the Royal Society B, 273, 1143-1148en
dc.identifier.issn0962-8452
dc.identifier.urihttp://hdl.handle.net/123456789/173
dc.description.abstractWe use a fully dated phylogenetic tree of the angiospermfamilies to calculate phylogenetic diversity (PD) in four South African vegetation types with distinct evolutionary histories. Since the branch length values are in this case represented by the ages of plant lineages, PD becomes the cumulative evolutionary age (CEA) of assemblages. Unsurprisingly, total CEA increases with family and with species diversity and observed values are the same as expected from random sampling of family lists. However, when random sampling is done from species lists, observed CEAs are generally lower than expected. In vegetation types which have undergone recent diversification—grassland, fynbos and Nama-karoo—co-occurring species are more closely related than expected, but in subtropical thicket the observed CEAs are well described by random sampling. The use of CEA has great potential for assessing the age of biotic assemblages, particularly as the dating of genus and species-level phylogenies become more accurate.en
dc.description.sponsorshipDST-NRF Centre of Excellence for Invasion Biologyen
dc.format.extent164107 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.subjectCape Floristic Regionen
dc.subjectevolutionary ageen
dc.subjectfynbosen
dc.subjectphylogenetic diversityen
dc.subjectvegetation historyen
dc.subjectSouth Africaen
dc.titleHow much evolutionary history in a 10x10m plot?en
dc.typeJournal Articlesen
dc.cibjournalProc. R. Soc. Ben
dc.cibprojectNAen


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