Abstract Detail

Biogeography

Kligman, Ben [1], Jordon-Thaden, Ingrid Eastman [1], Martine, Christopher [2], Freyman, William [3].

Ancestral area reconstruction of population-level sampling of an alpine species, Draba oligosperma (Brassicaceae).

Draba oligosperma Hook. (Brassicaceae), a largely apomictic species, is found in alpine habitats from an extensive range within the North American Cordillera. D. oligosperma exhibits several characteristics that make it an interesting subject for Ancestral Area Reconstruction, including a wide range spanning much of the of the North American Cordillera, many geographically isolated populations, large population sizes, largely apomictic reproduction, and unusual habitat niches compared to other members of its genus. Thirty-three populations of this species were sampled, with 10 to 25 individuals per population, from locations throughout its range, including sites in the Yukon Territory, Alberta, Montana, Idaho, Utah, Wyoming, Nevada, and California. Using ddRADtag sequencing methods, and the bioinformatics pipeline, pyrad, a multiple sequence alignment was compiled. A Bayesian MCMC analysis of this data set was performed in BEAST using secondary calibration points, resulting in a time calibrated phylogeny with divergence time estimations. The Ancestral Area Reconstruction software, for example BioGeoBEARS, and Migrate-n, will be used to test biogeographical hypotheses of where this species originated and how it spread throughout its present range. We aim to infer the migration patterns of D. oligosperma within the context of Pleistocene and Holocene geological events in North America.

1 - University of California Berkeley, University and Jepson Herbaria, 1001 Valley Life Science Building, Berkeley, CA, 94706, USA
2 - Bucknell University, Biological Sciences, 203 Biology Building, Lewisburg, PA, 17837, USA
3 - U.C. Berkeley, Integrative Biology, 3040 Valley Life Sciences Building #3140, Berkeley, CA, 94720-3140, USA

Keywords:
Brassicaceae
Draba oligosperma
ancestral area reconstruction
phylogeography.

Presentation Type: Poster
Session: P, Biogeography
Location: Exhibit Hall/Omni Hotel
Date: Monday, June 26th, 2017
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: PBG009
Abstract ID:513
Candidate for Awards:None