Bryological and Lichenological Section/ABLS
Leavitt, Steven D. , St. Clair, Larry L. .
Distribution of Lichen Species along an Altitudinal Gradient in central Utah, USA.
THE lichen floras at two sites on the Aquarius Plateau were examined. One was located at the crest of a high mountain plateau (3353 m) while the second was along the base of the same mountain at 2347 m. Lichens were collected from all available substrata. A total of 22 genera and 36 species of lichens were collected from the upper elevation site while 22 genera and 37 species were identified from the lower site. Twelve genera were common to both sites while only 8 species were common to both. Species of the two most abundant genera (Xanthoparmelia and Rhizoplaca) showed greater diversity at the lower elevation site. Of the five collected Xanthoparmelia species, three were common to both sites, with Xanthoparmelia plittii and Xanthoparmelia mexicana unique to the low elevation site while Xanthoparmelia wyomingica was found only at the upper elevation site. Three Rhizoplaca species were collected during this study, and Rhizoplaca peltata was identified only at the lower elevation site. This difference in the distribution of lichen taxa between the two sites emphasizes the importance of habitat and substratum in determining species distributions. Additional collections along a more detailed elevational gradient are planned to more specifically document species distribution patterns.
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1 - Brigham Young University, Department of Integrative Biology, 401 Widtsoe Building, Provo, Utah, 84602, USA
Presentation Type: Poster:Posters for Sections
Location: Auditorium/Bell Memorial Union
Date: Tuesday, August 1st, 2006
Time: 12:30 PM