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DC Field | Value | Language |
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dc.contributor.advisor | Thomson, Ashley | - |
dc.contributor.author | Timms, Robin J. P. | - |
dc.date.accessioned | 2020-05-11T19:46:07Z | - |
dc.date.available | 2020-05-11T19:46:07Z | - |
dc.date.created | 2020 | - |
dc.date.issued | 2020 | - |
dc.identifier.uri | http://knowledgecommons.lakeheadu.ca/handle/2453/4627 | - |
dc.description.abstract | The distribution of boreal and temperate species during the last glacial maximum (LGM) in Eastern North America can have a significant effect on the genetic diversity of present day populations. Here, I modelled the LGM distribution of several keystone deciduous tree species native to northeastern North America. The ecological niche modelling software, Maxent, was used to generate a relative rate of occurrence that was used to infer the probable locations of glacial refugia. These predicted refugia were then validated by paleo-ecological records where available. The genetic variation of each species was assessed by a literature review of previous studies that used allozymes to determine the expected heterozygosity. The area of the refugia were then compared to the expected heterozygosity through a linear regression. The findings of this study indicated no significant relationship (r2 = 0.024) between refugia size and expected heterozygosity. The lack of data on expected heterozygosity likely skewed the results and further studies need to be conducted to correct for this. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | Last Glacial Maximum | en_US |
dc.subject | Paleoecology | en_US |
dc.subject | Glacial refugia | en_US |
dc.subject | Phylogeography | en_US |
dc.subject | Species distribution models | en_US |
dc.title | The genetic diversity of eastern North American tree species as related to the extent of their spatial distribution during the Last Glacial Maximum | en_US |
dc.type | Thesis | en_US |
etd.degree.name | Honours Bachelor of Science in Forestry | en_US |
etd.degree.level | Bachelor | en_US |
etd.degree.discipline | Natural Resources Management | en_US |
etd.degree.grantor | Lakehead University | en_US |
Appears in Collections: | Undergraduate theses |
Files in This Item:
File | Description | Size | Format | |
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TimmsR2020b-1a.pdf | 2.28 MB | Adobe PDF | View/Open |
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