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Abstract Detail


Folk, Ryan [1], Soltis, Douglas [2], Soltis, Pamela S. [3], Cellinese, Nico [4], Mort, Mark [5], Allen, Julie [6], Stubbs, Rebecca [7], Guralnick, Rob [8].

Correlation among functional trait shifts, habitat shifts, and diversification patterns in the flowering plant clade Saxifragales.

The ability of plant lineages to shift in niche occupancy is likely to be associated with evolutionary shifts in suites of functional traits that increase survival in those habitats. However, the assessment of such correlated evolution between niche and species traits has been hampered by the difficulty of accumulating and linking these data layers in a phylogenetic context at large scales. We present a large-scale synthesis of environmental and functional trait data in the flowering plant lineage Saxifragales (2400 species). This comprises 24 traits accumulated globally from flora treatments (vegetative and reproductive morphology, life history); niche occupancy information (from soil, topographic, land cover, and climatic data); and a synthesis of phylogenetic information in the group (72% species-level coverage, 26% represented by phylogenomic data).
Synthesizing these data reveals that, as expected, correlated evolutionary patterns between niche predictors and functional traits are widely detectable, and that likewise phylogenetic signal is widely detectable. We also characterize patterns of clade disparity in both environmental and functional trait data. We present these patterns in combination with diversification rate inferences to demonstrate whole-organism phenotypic shifts associated with habitat shifts that may be responsible for the present-day diversity of this clade in desert and arctic-alpine systems.

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1 - Florida Museum Of Natural History, Dickinson Hall, 1659 Museum Road, Gainesville, FL, 32611, United States
2 - University of Florida, Biology, Gainesville, FL
3 - University Of Florida, Florida Museum Of Natural History, Gainesville, FL, 32611.0, United States
4 - University Of Florida, FLORIDA MUSEUM OF NAT. HISTORY, 1659 Museum Rd., 354 Dickinson Hall, Gainesville, FL, 32611, United States
5 - University Of Kansas, Ecology And Evolutionary Biology, 2041 Haworth Hall, 1200 Sunnyside Ave., Lawrence, KS, 66045, United States
6 - Florida Museum of Natural History, 1659 Museum Road, Gainesville , FL , 32611, USA
7 - University Of Florida, 1659 Museum Drive, Gainesville, FL, 32611, United States
8 - Florida Museum of Natural History, 1659 Museum Road, Gainesville, FL, 32611, United States

ecological niche modeling
functional traits
evolutionary constraint
ancestral niche reconstruction
data layers.

Presentation Type: Oral Paper
Session: 18, Macroevolution I
Location: 105/Mayo Civic Center
Date: Tuesday, July 24th, 2018
Time: 8:00 AM
Number: 18001
Abstract ID:113
Candidate for Awards:None

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