Smith, James F. , Stevens, Angela C. , Tepe, Eric J. , Davidson, Christopher .
Placing the origin of two species-rich genera in the late Cretaceous with later species divergence in the Tertiary: A phylogenetic, biogeographic and molecular dating analysis of Piper and Peperomia (Pipera.
Nearly all of the species diversity in Piperaceae is encompassed within Piper and Peperomia. Both genera are distributed across the tropics with areas of diversification in the Neotropics and Southeast Asia. Piperaceae are less diverse in Africa with only two native species of Piper. Members of Piper and Peperomia are often narrow endemics although some species of both are found on three continents. This study examines the distribution of both genera with representative samples from the Neotropics, Asia, Pacific Islands, and Africa. Molecular dating is used to place an age for the crown clades of Piper and Peperomia as well as ages for diversification within the clades. Both genera have origins in the late Cretaceous, but diversification of both genera occurred much later in the Tertiary. Biogeography of both genera are correlated with paleoclimate and geological evidence to better explain the distribution and diversification of these large genera.
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1 - Boise State University, Department of Biological Sciences, 1910 University Drive, Boise, Idaho, 83725-1515
2 - Boise State University, Department of Biological Sciences, 1910 University Drive, Boise, Idaho, 83725, USA
3 - University of Utah, Department of Biology, Salt Lake City, Utah, 84112, USA
4 - Idaho Botanical Research Foundation, 637 Warm Springs, Boise, Idaho, 83712, USA
Presentation Type: Poster:Posters for Topics
Location: Ball Room & Party Room/SUB
Date: Monday, July 28th, 2008
Time: 12:30 PM