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Abstract Detail



Phylogenetic Comparative Methods and Approaches in Plant Science

Smith, Stacey D. [1].

How Traits Shape Trees: New comparative approaches to understanding the role of character evolution in lineage diversification.

Comparative studies often treat characters as “passengers” along the branching tree of life and map the gain and loss of states onto a presumably independent phylogeny.  Nonetheless, for many characters, we are interested in their history exactly because they are predicted to shape the phylogeny, e.g., by acting as key innovations to increase diversification or as dead-ends that lead to higher extinction.  In this case, character evolution and lineage diversification will not be independent, and understanding the history of either requires joint estimation of processes involving both.  Stimulated by the development of the binary state speciation and extinction (BiSSE) model in 2007, studies of character-state dependent diversification have become a rapidly growing area of the comparative methods literature.  This talk will describe the BiSSE approach, its extensions for different (non-binary) traits and incompletely sampled phylogenies, and major findings based on the application of these methods to long-standing evolutionary questions.    


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1 - University of Colorado-Boulder, Department of Ecology and Evolutionary Biology, Campus Box 334, Boulder, CO, 80309-0334, USA

Keywords:
character reconstruction
Phylogeny
Speciation
extinction
diversification.

Presentation Type: Symposium or Colloquium Presentation
Session: SY01
Location: Evergreen/Grove
Date: Monday, July 28th, 2014
Time: 8:45 AM
Number: SY01003
Abstract ID:333
Candidate for Awards:None


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