Date of Award
Master of Science
Nabalus serpentarius (Pursh) Hooker is a species of concern to conservation management on the island of Nantucket, MA where four populations have been recently observed. A comparative population genetic study was carried out on N. serpentarius and a common congener, N. trifoliolatus using genetic markers developed from Taraxacum kok-saghyz and Nabalus serpentarius. Evaluations of genetic diversity and population structure of both Nabalus species on Nantucket were conducted. Nabalus serpentarius showed no reduction in population genetic variation as compared to the common congener, and the two species demonstrated similar and very low levels of population genetic structure. These data indicate that genetic threats to the rare species are not an immediate concern. However, given the small numbers of populations and the potential for stochastic demographic threats such as disease and weather phenomena, we recommend protection of all populations and encourage any programs that bolster population number.
Dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.
Ballou, Steven Michael Jr, "CONSERVATION GENETICS OF NABALUS SERPENTARIUS AND ITS COMMON CONGENER, NABALUS TRIFOLIOLATUS (ASTERACEAE) WITH IMPLICATIONS ON CONSERVATION" (2021). Electronic Theses and Dissertations. 2159.