Schmerler, S B , Schmandt, K R , Clement, W L , Donoghue, Michael J. , Edwards, Erika .
Evolutionary analyses of leaf shape in Viburnum (Adoxaceae).
Leaf form has been connected to a variety of functional and ecological traits, and variation in leaf morphology has traditionally been thought to correlate with adaptation to different environments. But the ~160 closely-related species of Viburnum, which are mostly confined to a relatively narrow niche in mesic, temperate forest understories, nevertheless exhibit strikingly diverse foliar morphology. Laminar shape – including size, lobing, and dentition – varies dramatically between and within species. Using a combination of real and pseudo-landmarks, we developed morphometric point models of the laminar surface for ~90 Viburnum taxa. Combining this dataset with the most current Viburnum phylogeny, we conducted evolutionary principal component analyses to determine the major axes of laminar morphometric variation across Viburnum. We then tested for evolutionary correlations between these axes and several physiological and ecological traits, including photosynthetic capacity, drought tolerance, phenological patterns, and climatic niche space..
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1 - Brown University, Ecology and Evolutionary Biology, 69 Brown St, Box 5628, Providence, RI, 02912, USA
2 - Brown University, Ecology and Evolutionary Biology, 80 Waterman St, Box G-W, Providence, RI, 02912, USA
3 - Yale University, Ecology and Evolutionary Biology, P.O. Box 208105, New Haven, CT, 06520, USA
Presentation Type: Poster:Posters for Topics
Location: Hall A/Convention Center
Date: Monday, August 2nd, 2010
Time: 5:30 PM