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Abstract Detail


Folk, Ryan [1], Stubbs, Rebecca [2], Cellinese, Nico [2], Mort, Mark [3], Soltis, Pamela S. [4], Soltis, Douglas E. [4], Guralnick, Robert [1].

Dynamics of niche evolution in the Saxifragales.

Previous work using traditional habitat descriptors from floristic treatments has suggest that niche is tightly conserved in the Saxifragales, and that many of the rarest transitions occurred during the early radiation of the clade. We return to this system using quantitative modeling methods and a large-scale phylogenomic supermatrix to infer patterns of diversification. We ask whether (1) the use of fine-scale quantitative methods corroborates earlier findings of niche conservation; (2) whether niche shifts are more frequent between certain habitat types; and (3) whether niche shifts are associated with phenotypic shifts as part of co-evolving complexes. In association with this work, we show-case some new methods that enable further types of hypothesis testing using ancestral niche reconstructions. We also make explicit comparisons between matrices derived from niche models, floristic data, and ecoregion presence, testing the effectiveness of each of these methods for reconstructing evolutionary patterns.

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1 - University of Florida, Florida Museum of Natural History, Dickinson Hall, 1659 Museum Road, Gainesville, FL, 32611, USA
2 - University of Florida, Florida Museum of Natural History, 1659 Museum Road, Gainesville, Florida, 32611, United States
3 - University of Kansas, 1200 Sunnyside Ave., Lawrence, KS, 66045, United States
4 - University Of Florida, Florida Museum Of Natural History, PO BOX 117800, Gainesville, FL, 32611-7800, USA, 352/273-1964

none specified

Presentation Type: Oral Paper
Session: 2, Macroevolution
Location: Fort Worth Ballroom 5/Omni Hotel
Date: Monday, June 26th, 2017
Time: 8:00 AM
Number: 2001
Abstract ID:27
Candidate for Awards:None

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