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Citation for Study 17666

About Citation title: "Back to Gondwanaland: Can ancient vicariance explain (some) Indian Ocean disjunct plant distributions?".
About Study name: "Back to Gondwanaland: Can ancient vicariance explain (some) Indian Ocean disjunct plant distributions?".
About This study is part of submission 17666 (Status: Published).

Citation

Pirie M.D., Litsios G., Bellstedt D., Salamin N., & Kissling J. 2015. Back to Gondwanaland: Can ancient vicariance explain (some) Indian Ocean disjunct plant distributions?. Biology Letters, .

Authors

  • Pirie M.D. Phone +4961313922928
  • Litsios G. Phone +41 21 692 4187
  • Bellstedt D.
  • Salamin N.
  • Kissling J. (submitter)

Abstract

Oceans, or other wide expanses of inhospitable environment, interrupt present day distributions of many plant groups. Using molecular dating techniques, generally incorporating fossil evidence, we can estimate when such distributions originated. Numerous dating analyses have recently precipitated a paradigm shift in the general explanations for the phenomenon, away from older geological causes, such as continental drift, in favour of more recent, long-distance dispersal (LDD). For example, the ?Gondwanan vicariance? scenario has been dismissed in various studies of Indian Ocean disjunct distributions. We used the gentian tribe Exaceae to reassess this scenario using molecular dating with minimum (fossil), maximum (geological), secondary (from wider analyses) and hypothesis-driven age constraints. Our results indicate that ancient vicariance cannot be ruled out as an explanation for the early origins of Exaceae across Africa, Madagascar and the Indian subcontinent unless a strong assumption is made about the maximum age of Gentianales. However, both the Gondwanan scenario and the available evidence suggest that there were also several, more recent, inter-continental dispersals during the diversification of the group.

Keywords

calibration, dating, Exaceae, long-distance dispersal, vicariance

External links

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  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S17666
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