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"Regeneration Patterns of Fraser Fir on Mt. Collins, Great Smoky Mountains National Park." In Abstracts of the Fifteenth Annual Scientific Research Meeting, The Uplands Area of the Southeast Region National Park Service; Great Smoky Mountains National Park, May 25-26, 1989, edited by James D. Wood, 6. Atlanta, GA: U.S. Department of the Interior, National Park Service, 1989.
"Review of the Biology and Ecology of the Balsam Woolly Aphid in Southern Appalachian Spruce-Fir Forests." In The Southern Appalachian Spruce-Fir Ecosystem: Its Biology and Threats, 36-50. Research/Resources Management Report. Gatlinburg, TN: Uplands Field Research Laboratory , 1984.
"Spruce-fir Forests of Eastern North America." In Ecology and Decline of Red Spruce in the Eastern United States, 3-39. Vol. 96. New York, NY: Springer-Verlag, 1992.
"Censuses of a Breeding Bird Population in a Virgin Spruce-Fir Forest on Mt. Guyot, Great Smoky Mountains National Park, Before and After Balsam Wooly Aphid Infestation." In Twelfth Annual Scientific Research Meeting, Great Smoky Mountains National Park. Johnson City, Tennessee: National Park Service, Southeast Regional Office, 1986.
"Managing Hemlock Woolly Adelgid and Balsam Woolly Adelgid at Great Smoky Mountains National Park." In Third Symposium on Hemlock Woolly Adelgid in the Eastern United States, 232. Asheville, NC: U.S. Forest Service, 2005.
"Stand Characteristics Associated with Potential Decline of Spruce-Fir Forests in the Southern Appalachians In Proceedings of the US/FRG Research Symposium: Effects of Atmospheric Pollutants on the Spruce-Fir Forests of the Eastern United States and the Federal Republic of Germany. Burlington, VT: U.S.D.A. Forest Service, 1988.
Third Annual Scientific Research Meeting, June 23-24, 1977 In Annual Scientific Research Meeting-National Park Service, Southeast Region. Gatlinburg, TN: U.S. Department of the Interior, National Park Service, 1977.
Application of a Spruce-Fir Forest Canopy Gap Model." Forest Ecology and Management 20 (1987): 151-169.
"Application of Spherical Statistics to Change Vector Analysis of Landsat Data: Southern Appalachian Spruce-Fir Forests." Remote Sensing of Environment 74, no. 3 (2000): 482-493.
"Assessing the Potential Impacts to Riparian Ecosystems Resulting from Hemlock Mortality in Great Smoky Mountains National Park." Environmental Management 44, no. 2 (2009): 335-345.
"An Attribute-Based Approach to Contingent Valuation of Forest Protection Programs." Journal of Forest Economics 17, no. 1 (2011): 35-52.
"Balsam Woolly Adelgid and Spruce-Fir Interactions in the Southern Appalachian Mountains." Proceedings for the 1988 Society of American Foresters National Convention 1988 (1988): 92-96.
"Balsam Woolly Aphid in the Southern Appalachian." Journal of Forestry 77, no. 5 (1965): 1154-1158.
"Coarse Woody Debris in a Southern Appalachian Spruce-fir Forest of the Great Smoky Mountains National Park." Natural Areas Journal 28, no. 4 (2008): 342-355.
"Comparative Study of Composition and Distribution Patterns of Subalpine Forests in the Balsam Mountains of Southwest Virginia and the Great Smoky Mountains." Bulletin of the Torrey Botanical Club 111, no. 4 (1984): 489-493.
"A Comparison of Overstory Community Structure in Three Southern Appalachian Spruce-Fir Forests." Bulletin of the Torrey Botanical Club 119, no. 3 (1992): 316-332.
"Comparisons of arthropod and avian assemblages in insecticide-treated and untreated eastern hemlock (Tsuga canadensis [L.] Carr) stands in Great Smoky Mountains National Park, USA." Forest Ecology and Management 260, no. 5 (2010): 856-863.
"Compositional and Environmental Characteristics of Tsuga canadensis (L.) Carr. Forests in the Southern Appalachian Mountains, USA." Journal of the Torrey Botanical Society 134, no. 4 (2007): 479-488.
"Early Impacts of Hemlock Woolly Adelgid in Tsuga Canadensis Forest Communities of the Southern Appalachian Mountains." Journal of the Torrey Botanical Society 138, no. 1 (2011): 93-106.
"Elevational Gradients of Bryophyte Diversity, Life Forms, and Community Assemblage in the Southern Appalachian Mountains." Canadian Journal of Forest Research 40, no. 11 (2010): 2164-2174.
"Factors Affecting Establishment and Recovery of Sasajiscymnus tsugae (Coleoptera: Coccinellidae), an Introduced Predator of Hemlock Woolly Adelgid (Hemiptera: Adelgidae) on Eastern Hemlock (Pinales: Pinaceae)." Environmental Entomology 42, no. 6 (2013): 1123-1453.
"Fighting Aliens with Aliens." Environment 44, no. 10 (2002): 7.
"Fossil Pollen Records Forecast Response of Forests to Hemlock Woolly Adelgid Invasion." Ecography 32, no. 5 (2009): 881-887.
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