Abstract Detail



The flora of Madagascar: uncovering mechanisms for diversification

Hong-Wa, Cynthia [1].

Diversification of the speciose Noronhia: what’s behind it?

Noronhia is the largest and most ubiquitous genus of Oleaceae in Madagascar. It is found in diverse habitats and represents a common element of different vegetation types on the island. Its highest diversity is in the northern part where mountainous regions seem to have played a role in generating species. However, no single mechanism can explain by itself the diversification of Noronhia, which likely happened rapidly in the last 10-15 million years. The spatial heterogeneity created by intricate landscapes also accounts for the pattern of microendemism found in this genus. While the percentage of microendemics is relatively high, a pattern of sympatry is also common among species of Noronhia and may be underlain by both biological and physical factors.


1 - Delaware State University, Department Of Agriculture & Natural Resources, 1200 N. Dupont Hwy, Claude E. Phillips Herbarium, Dover, DE, 19901, United States

Keywords:
diversification
Madagascar
microendemism
Noronhia
species diversity
sympatry.

Presentation Type: Colloquium Presentations
Session: C08, The flora of Madagascar: uncovering mechanisms for diversification
Location: 101/Mayo Civic Center
Date: Tuesday, July 24th, 2018
Time: 2:45 PM
Number: C08006
Abstract ID:467
Candidate for Awards:None


Copyright © 2000-2018, Botanical Society of America. All rights reserved