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Abstract Detail


Biogeography

Nylinder, Stephan [1].

Phylogeography of Jovellana, a recent leap across the Pacific.

Plants with a common disjunct distribution in both South America and Australia/New Zealand have since long been considered of a common origin dating back to at least Miocene, when the continents of Australia, Antarctica, and South America were still united. Molecular evidence, however, now points towards a scenario where at least some of these floral elements are the results of later date long distance dispersals across the Pacific Ocean. With an example from the floral family Calceolariaceae it can be shown that the disjunct distribution of the small genus Jovellana, with two species each in Chile (J. violacea and J. punctata) and New Zealand (J. repens and J. sinclairii), must be of relatively recent date, though the modes of such long distance dispersals and the vectors are yet largely unknown and open for speculation.


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1 - Botanical Institution, Department of Plant and Environmental Sciences, Carl Skottbergs Gata 22B, Gothenburg, 40530, Sweden

Keywords:
vicariance
long distance dispersal
South America
Australia
Antarctica
Calceolariaceae.

Presentation Type: Oral Paper:Papers for Topics
Session: 60
Location: Cottonwood D/Snowbird Center
Date: Wednesday, July 29th, 2009
Time: 8:30 AM
Number: 60003
Abstract ID:124


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