Population genetic analyses of four species of epiphytic ferns endemic to Hawaii were conducted to assess the levels and patterns ofgenetic variability within and among populations. The study included both conspecific populations from single islands as well as those from different islands in the Hawaiian Archipelago. Overall levels ofgenetic variability varied among species but were generally high relative to other plants. Additionally, all populations oftaxa appeared to be highly outcrossed with fixation indices not significantly different from zero. Inspection ofFST values and estimates ofinterisland gene flow (Nm) suggested that populations on different islands are generally not genetically distinct, possibly due to
high levels of interisland gene flow. The abundance and distribution of island-unique alleles, however, revealed varying degrees oflocalized genetic endemism within each species. These data suggest that conspecific populations on different islands are in the early stages ofgenetic divergence, possibly representing incipient speciation. The recognition ofisland-specific genetic endemism within species may be critical for safeguarding the long-term survival and continued evolutionary change of these and other endemic species of Hawaiian organisms.
Open Access and Copyright Notice
Selbyana is committed to real and immediate open access for academic work. All of Selbyana's articles and reviews are free to access immediately upon publication. There are no author charges (APCs) prior to publication, and no charges for readers to download articles and reviews for their own scholarly use. To facilitate this, Selbyana depends on the financial backing of the Marie Selby Botanical Gardens, the hard work and dedication of its editorial team and advisory board, and the continuing support of its network of peer reviewers and partner institutions.
Authors are free to choose which open license they would like to use for their work. Our default license is the Creative Commons Attribution-NonCommercial 4.0 (CC BY-NC 4.0). While Selbyana’s articles can be copied by anyone for noncommercial purposes if proper credit is given, all materials are published under an open-access license with authors retaining full and permanent ownership of their work. The author grants Selbyana a perpetual, non-exclusive right to publish the work and to include it in other aggregations and indexes to achieve broader impact and visibility.
Authors are responsible for and required to ascertain that they are in possession of image rights for any and all photographs, illustrations, and figures included in their work or to obtain publication or reproduction rights from the rights holders. Contents of the journal will be registered with the Directory of Open Access Journals and similar repositories. Authors are encouraged to store their work elsewhere, for instance in institutional repositories or personal websites, including commercial sites such as academia.edu, to increase circulation (see The Effects of Open Access).