| Abstract Detail
Conservation Biology Van Zant, Jeffrey [1], Talcott, Anna [1], Cooper, Ranessa [1]. Genetic structure and gene flow among Cirsium hillii (Hill’s thistle; Asteraceae) populations from Drummond Island, Michigan. Cirsium hillii (Hill’s thistle; Asteraceae) is a perennial endemic to oak savannahs, open woods, prairies, and jack pine barrens in the Great Lakes region of the United States and Canada, and it is a species of special concern with G3/S3 rankings. In Michigan, Hill’s thistle is known from several regions across the state, but populations have decreased in number mainly due to habitat loss. Drummond Island is located in Michigan’s Upper Peninsula and is part of Chippewa County. In 2014 and 2015, estimates of genetic diversity were performed on three populations of Hill’s thistle from Drummond Island. Genetic diversity was assessed using six microsatellite loci; levels of heterozygosity were high in all three data sets, while allelic diversity was low. Although cloning can be a major mode of reproduction for C. hillii through the production of root shoots, genotypic richness values were high, indicating sexual reproduction being more prevalent in these populations. The Hill’s thistle population located at the Harvey’s Rocks Plant Preserve has been sampled extensively through an on-going collaboration with the Michigan Nature Association (MNA), and it presents a unique opportunity to do a long-term assessment of spatial genetic structure. Our data will be useful to MNA and the Michigan Natural Features Inventory for planning and implementing future conservation management efforts of C. hillii on Drummond Island.
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1 - HILLSDALE COLLEGE, 33 E COLLEGE ST, HILLSDALE, MI, 49242, USA
Keywords:
Cirsium hillii
Asteraceae
Conservation genetics
genetic structure
gene flow
Drummond Island.
Presentation Type: Oral Paper
Session: 26, Conservation Biology I
Location: 104/Savannah International Trade and Convention Center
Date: Tuesday, August 2nd, 2016
Time: 2:15 PM
Number: 26004
Abstract ID:333
Candidate for Awards:None |
