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Citation for Study 18291

About Citation title: "The biodiversity hotspot as evolutionary hot-bed: spectacular radiation of Erica in the Cape Floristic Region".
About Study name: "The biodiversity hotspot as evolutionary hot-bed: spectacular radiation of Erica in the Cape Floristic Region".
About This study is part of submission 18291 (Status: Published).

Citation

Pirie M.D., Oliver E., Mugrabi de kuppler A., Gehrke B., Le maitre N., Kandziora M., & Bellstedt D. 2016. The biodiversity hotspot as evolutionary hot-bed: spectacular radiation of Erica in the Cape Floristic Region. BMC Evolutionary Biology, 16(190).

Authors

  • Pirie M.D. (submitter) Phone +4961313922928
  • Oliver E.
  • Mugrabi de kuppler A.
  • Gehrke B. Phone +4961313922928
  • Le maitre N.
  • Kandziora M.
  • Bellstedt D.

Abstract

Background: The disproportionate species richness of the world?s biodiversity hotspots could be explained by low extinction (the evolutionary ?museum?) and/or high speciation (the ?hot-bed?) models. We test these models using the largest of the species rich plant groups that characterise the botanically diverse Cape Floristic Region (CFR): the genus Erica L. We generate a novel phylogenetic hypothesis informed by nuclear and plastid DNA sequences of c. 60% of the c. 800 Erica species (of which 690 are endemic to the CFR), and use this to estimate clade ages (using RELTIME; BEAST), net diversification rates (GEIGER), and shifts in rates of diversification in different areas (BAMM; MuSSE). Results: The diversity of Erica species in the CFR is the result of a single radiation within the last c. 15 million years. Compared to ancestral lineages in the Palearctic, the rate of speciation accelerated across Africa and Madagascar, with a further burst of speciation within the CFR that also exceeds the net diversification rates of other Cape clades. Conclusions: Erica exemplifies the ?hotbed? model of assemblage through recent speciation, implying that with the advent of the modern Cape a multitude of new niches opened and were successively occupied through local species diversification.

Keywords

Biodiversity; Cape Floristic Region; Diversification; Erica; Evolution

External links

About this resource

  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S18291
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