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Small-scale invasion dynamics of a native tree, Juniperus virginiana, in Ohio

Hartman, Hannah M
http://orcid.org/0000-0002-3958-1071
http://rave.ohiolink.edu/etdc/view?acc_num=kent1700216076554847

Abstract Details

2023, MS, Kent State University, College of Arts and Sciences / Department of Biological Sciences.
Eastern redcedar (Juniperus virginiana L. var. virginiana) is a native species currently invading open areas and grasslands outside of its original range in the United States. I studied the eastern redcedar’s (ERC) invasion patterns in the Lakeside Daisy State Nature Preserve (LDSNP), a short grass prairie located on the Marblehead Peninsula in Ohio, examining the changes in the genetic diversity and structure of the encroaching population. I investigated the relative importance of long-distance dispersal vs. diffusion in the invasion of this short grass prairie by ERC. I used eight microsatellite marker loci and a database of single nucleotide polymorphisms to infer gene flow from external sources vs. within-population recruitment. I found that the older trees in this preserve were less than fifty-years-old, indicating that the population was established between 1970 and 1980. When I grouped trees into five age categories of 10-year increments, we found that the allelic diversity, as indicated by the average number of alleles per locus, increased as the age of the trees decreased. Principal Coordinate Analysis showed two distinct groups of trees in the LDSNP that I investigated further using soil type. Analysis of the population structure of the ERC trees using ADMIXTURE revealed three ancestral clusters in the ERC populations. All ancestral clusters are present in all age groups, suggesting that there is continual input of genetic information from the ancestral clusters. Overall, my findings indicate that ERC encroachment of the LDSNP results from multiple and reiterated gene flow events from the edge of the range through animal-mediated seed dispersal at short and intermediate distances.
Oscar Rocha (Advisor)
David Ward (Committee Member)
Sangeet Lamichhaney (Committee Member)
79 p.
Bioinformatics; Conservation; Genetics; Natural Resource Management; Plant Biology; Plant Sciences; Range Management
Genetic structure; range expansion; gene flow; long-distance dispersal; diffusion; microsatellite markers; single nucleotide polymorphisms; environmental filtering; encroachment

Recommended Citations

Citations

  • Hartman, H. M. (2023). Small-scale invasion dynamics of a native tree, Juniperus virginiana, in Ohio [Master's thesis, Kent State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=kent1700216076554847

    APA Style (7th edition)

  • Hartman, Hannah. Small-scale invasion dynamics of a native tree, Juniperus virginiana, in Ohio. 2023. Kent State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=kent1700216076554847.

    MLA Style (8th edition)

  • Hartman, Hannah. "Small-scale invasion dynamics of a native tree, Juniperus virginiana, in Ohio." Master's thesis, Kent State University, 2023. http://rave.ohiolink.edu/etdc/view?acc_num=kent1700216076554847

    Chicago Manual of Style (17th edition)

kent1700216076554847
65
© 2023, some rights reserved.Creative Commons License Small-scale invasion dynamics of a native tree, Juniperus virginiana, in Ohio by Hannah M Hartman is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Kent State University and OhioLINK.