Abstract Detail

Conservation Biology

McCauley, Ross [1], Cortes-Palomec, Aurea [2].

Conservation genetic assessment of the threatened Cliff Palace Milkvetch (Astragalus deterior (Barneby) Barneby) in Mesa Verde National Park in southwestern Colorado.

The Cliff Palace Milkvetch, Astragalus deterior (Barneby) Barneby (Fabaceae), is a small perennial herb, endemic to the south rim of Mesa Verde National Park. The species is a specialist on rim rock, with thin soil and high environmental exposure. The species is ranked by NatureServe and the Colorado Natural Heritage Program as G1 and is one of the most potentially threatened species in the park. Survey work in 1980 estimated the entire range to encompass a habitat of approximately 83 ha and subsequent survey work has indicated a decline in population numbers and size, particularly over the last five years, thought to be attributed to extended drought conditions. We genotyped 100 individuals across the full range of the species using microsatellites to evaluate patterns of genetic diversity and differentiation and are combining this genetic data with ecological survey and pollinator observation data to assist in the development of a comprehensive species management plan.

1 - Fort Lewis College, Department Of Biology, 1000 Rim Drive, Durango, CO, 81301, United States
2 - Fort Lewis College, Department of Biology, 1000 Rim Dr., Durango, CO, 81301, USA

Keywords:
Fabaceae
Astragalus
conservation
rare plants
species conservation.

Presentation Type: Poster
Number: PCB008
Abstract ID:381
Candidate for Awards:None