Thesis
Biogeography of plant mating systems and historical range expansions
Washington State University
Master of Science (MS), Washington State University
05/2021
DOI:
https://doi.org/10.7273/000000064
Handle:
https://hdl.handle.net/2376/112482
Abstract
Species’ ranges fluctuate in geographic space and throughout time. The distribution of
variation within a species geographic range can be explained by both ecological and evolutionary
processes, which reciprocally influence the shape and location of the geographic range. The
purpose of this thesis is to explore species’ geographic ranges through spatial and temporal
frameworks. To do this I ask the following: 1) does self-fertilization have a general spatial
distribution within species’ ranges?; and 2) how do the origin and colonization routes of a
historic range expansion shape a species range? To test general patterns in the distribution of
self-fertilization rates, 28 species were analyzed across their native range. Of these 28 species,
there was no consistent signal to suggest elevated self-fertilization rates near species range
boundaries. Historic range expansion was assessed in a single species (Campanula americana)
which displayed a common biogeographic pattern for eastern North American species (i.e.
population subdivision associated with the Mississippi River). In this species, westward range
expansion explains this pattern, while in many other taxa multiple southern refugia are inferred. Overall, these results suggest that broad generalizations in biogeography require species-specific
contexts (i.e. historical or phylogenetic information) in order to be applied.
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Details
- Title
- Biogeography of plant mating systems and historical range expansions
- Creators
- Carly Jean Prior
- Contributors
- JEREMIAH W BUSCH (Degree Supervisor) - Washington State University, Biological Sciences, School ofJESSE L BRUNNER (Committee Member) - Washington State University, Biological Sciences, School ofOMAR EDUARDO CORNEJO (Committee Member) - Washington State University, Biological Sciences, School of
- Awarding Institution
- Washington State University
- Academic Unit
- Biological Sciences, School of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Format
- pdf
- Number of pages
- 110
- Identifiers
- 99900586063601842
- Resource Type
- Thesis