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Vascular Plant Survey of the Ravensford Tract: Great Smoky Mountains National Park. Gatlinburg, TN: Great Smoky Mountain National Park, Twin Creeks Natural Resources Center, 2001.
The Impact of Harvesting Ramps (Allium Tricoccum Ait.) In Great Smoky Mountains National Park. Gatlinburg, TN: National Park Service, 1996.
Habitat Modeling and Protection of American Ginseng (Panax quinquefolius L.) in Great Smoky Mountains National Park. Gatlinburg, TN: U.S. National Park Service, 1999.
Habitat Modeling and Conservation of Four Vascular Plants Endemic to the Southern Appalachian Mountains in Great Smoky Mountains National Park. Gatlinburg, TN: National Park Service, 1999.
Vegetative Legacy of a Protected Deer Herd in Cades Cove, Great Smoky Mountains National Park." Natrual Areas Journal 26, no. 2 (2006): 126-136.
"Twenty Years of Forest Change in the Woodlots of Cades Cove, Great Smoky Mountains National Park." Journal of the Torrey Botanical Society 132, no. 2 (2005): 280-292.
"Population Recovery Following Differential Harvesting of Allium tricoccum Ait. in the Southern Appalachians." Biological Conservation 116 (2004): 227-234.
"Long-Term Response of Spring Flora to Chronic Herbivory and Deer Exclusion in Great Smoky Mountains National Park, USA." Biological Conservation 125, no. 3 (2005): 297-307.
"Herbaceous-Layer Impoverishment in a Post-Agricultural Southern Appalachian Landscape." American Midland Naturalist 162, no. 1 (2009): 148-168.
"Effects of Chronic Herbivory and Historic Land Use on Population Structure of a Forest Perennial, Trillium catesbaei." Applied Vegetation Science 10, no. 3 (2007): 441-450.
"Effects of Chronic Herbivory and Historic Land Use on Population Structure of a Forest Perennial, Trillium catesbaei." Applied Vegetation Science 10, no. 3 (2007): 441-450.
"Drought-herbivory Interaction Disrupts Competitive Displacement of Native Plants by Microstegium vimineum, 10-year Results." Oecologia (Berlin) 157, no. 3 (2008): 497-508.
"Managing Rare Plant Populations With Fire in Great Smoky Mountains National Park." In Proceedings: Workshop on Fire, People, and the Central Hardwoods Landscape: 2000 March 12-14: Richmond, KY. Gen. Tech. Rep. NE-274, edited by Daniel A. Yuassy, 116-119. Newton Square, PA: Department of Agriculture, Forest Service, Northeastern Research Station, 2000.
"Wildflowers of the Smokies. 2nd ed. Great Smoky Mountains Association.
Wildflowers of the Smokies. Gatlingburg, TN: Great Smoky Mountains Natural History Association, 1996.