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Abstract Detail


Gaynor, Michelle [1], Soltis, Douglas [2], Soltis, Pamela [3].

Phylogenetic patterns of ecological niche evolution in Diapensiaceae.

There are many long-standing questions involving the well-known Eastern North America and Eastern Asia floristic disjunction, including patterns of niche evolution in disjunct relatives. We investigated Diapensiaceae (Ericales), a small family whose species exhibit this disjunction. Of the 15 species in Diapensiaceae, one is circumboreal, one occurs in northwestern North America, four are limited to Eastern North America, and the other nine occur in Eastern Asia. Previous studies have suggested a Northern Hemisphere origin for Diapensiaceae. However, much is still unknown about the biogeographic history and ecological niche evolution within this family. To improve our phylogenetic underpinning for this family, we sequenced approximately 350 conserved nuclear genes from DNA obtained from herbarium specimens for 14 of the 15 species in Diapensiaceae. These sequences were then used to build a phylogeny for this family using maximum likelihood and coalescent methods. Ecological niche models were generated for each species using locality data obtained from iDigbio and GBIF, environmental data from WorldClim, and Maxent software. Our phylogeny then served as a framework for studies of biogeography and ecological niche evolution.

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1 - University of Florida, Department of Biology, 220 Bartram Hall, P.O. Box 118525, Gainesville, FL, 32601, USA
2 - University of Florida, Florida Museum of Natural History, PO Box 117800, Gainesville, FL, 32611, USA
3 - University Of Florida, Florida Museum Of Natural History, Po Box 117800, Gainesville, FL, 32611, United States

ecological niche modelling

Presentation Type: Poster
Session: P, Phylogenomics Posters
Location: Arizona Ballroom/Starr Pass
Date: Monday, July 29th, 2019
Time: 5:30 PM This poster will be presented at 5:30 pm. The Poster Session runs from 5:30 pm to 7:00 pm. Posters with odd poster numbers are presented at 5:30 pm, and posters with even poster numbers are presented at 6:15 pm.
Number: PPL007
Abstract ID:571
Candidate for Awards:None

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