Master of Science (MS)
First Committee Member
Scott R. Abella
Second Committee Member
LLoyd R. Stark
Third Committee Member
Stanley D. Smith
Fourth Committee Member
Matthew A. Bowker
Number of Pages
Biological soil crusts (BSCs) are sensitive to anthropogenic disturbances. Natural recovery takes many years. Active restoration decreases recovery time. Native BSC inocula, which included lichens and mosses, salvaged from gypsiferous soil habitats in Lake Mead National Recreation Area (LMNRA) in the eastern Mojave Desert were stored dry for two years and applied to disturbed soil after a road reconstruction in LMNRA and also used in laboratory experiments to test inoculation technique effectiveness. After 18 months, field results revealed positive relationships between inoculation and the presence of macroscopic BSC cover, cyanobacteria abundance, soil stability, and ammonium concentrations. Chlorophyll fluorescence monitoring of the dominant lichen Collema revealed specimens from field sites had equivalent or higher values than undisturbed specimens indicating photosynthetic recovery after salvage, storage, and field application. Laboratory slurry treatments showed significant evidence of cyanobacteria growth after eight months. The results from this thesis research have direct implications for ecosystem management.
Aridland ecology; Arid regions ecology; Biological soil crust; Cryptobiotic soil; Gypsiferous soil; Nevada; Restoration; Soil crusting; Soil restoration; Soils – Gypsum content; United States – Lake Mead National Recreation Area; United States – Mojave Desert
Biology | Desert Ecology | Environmental Health and Protection | Environmental Sciences | Natural Resources and Conservation | Soil Science
University of Nevada, Las Vegas
Chiquoine, Lindsay P., "Restoration of Biological Soil Crust on Disturbed Gypsiferous Soils in Lake Mead National Recreation Area, Eastern Mojave Desert" (2012). UNLV Theses, Dissertations, Professional Papers, and Capstones. 1715.
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