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- W4253052563 abstract "The biodiversity of floras has until recently been measured solely in terms of their species number or species density, with little regard to the breadth of phylogenetic diversity represented by the species. The latter is partly a function of the size of the flora, and partly of the pattern of distribution of the species into higher taxa. To determine whether floras differ in this respect, this study compares the frequency distribution of genus size in 20 island and regional floras. Certain floras (Cape Region, S.W. Australia, New Zealand, Hawaii) are found to have high concentrations of genera containing many species. Others are notably lacking in large genera (Java, Jamaica, Nepal, Niger), though this group tend to be family-rich. In floras with high endemism (Cape, New Zealand, Fiji, Jamaica, Hawaii), the level of endemism is consistently higher in larger genera. Possible reasons for the observed differences between floras are geographic and temporal isolation, level of habitat diversity, climatic history, volcanic, orogenic and tectonic events. Clusters of large genera may indicate recent speciation, possibly following the last glaciation. Genus size may be an important consideration when limited conservation resources have to be targetted to retain the maximum phylogenetic diversity in a threatened flora." @default.
- W4253052563 created "2022-05-12" @default.
- W4253052563 creator A5057624125 @default.
- W4253052563 date "1997-10-01" @default.
- W4253052563 modified "2023-10-04" @default.
- W4253052563 title "A comparative study of the distribution of genus size in twenty angiosperm floras" @default.
- W4253052563 doi "https://doi.org/10.1006/bijl.1997.0152" @default.
- W4253052563 hasPublicationYear "1997" @default.
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