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"Developing Critical Loads of Nitrate and Sulfate Deposition to Watersheds of the Great Smoky Mountains National Park, USA." Water, Air, & Soil Pollution 226, no. 8 (2015).
"Effects of Climate, Land Management, and Sulfur Deposition on Soil Base Cation Supply in National Forests of the Southern Appalachian Mountains." Water, Air, & Soil Pollution 224, no. 10 (2013).
"Regeneration responses to exogenous disturbance gradients in southern Appalachian Picea-Abies forests." Forest Ecology and Management 289 (2013): 98-105.
"Microbial community diversity and composition across a gradient of soil acidity in spruce-fir forests of the southern Appalachian Mountains." Applied Soil Ecology 61 (2012): 60-68.
Soil Nitrification and Mineralization Rates Along an Elevation Gradient in the Great Smoky Mountains National Park. Knoxville, TN: University of Tennessee, 2012.
"High-elevation Ground-layer Plant Community Composition Across Environmental Gradients in Spruce-Fir Forests." Ecological Research 26, no. 6 (2011): 1089-1101.
"Soil Acid-Base Chemistry of a High-Elevation Forest Watershed in the Great Smoky Mountains National Park: Influence of Acidic Deposition." Water, Air, and Soil Pollution (2011).
Cultural Survey Report: Acid Deposition Effects on Soil Chemistry in the Noland Divide Watershed, Great Smoky Mountains National Park. Swain County, North Carolina.: Great Smoky Mountains National Park, 2009.
"Tracing Hillslope Sediment Production and Transport With In Situ and Meteoric Be-10." Journal of Geophysical Research-Earth Surface 114, no. FO4020 (2009): 1-16.
Are Threatened High-Elevation Spruce-Fir Forests Impacted by Aluminum Toxicity and Calcium Loss?. Houghton, MI: Michigan Technological University, 2008.
"Impacts of an Exotic Disease and Vegetation Change on Foliar Calcium Cycling in Appalachian Forests." Ecological Applications 17, no. 3 (2007): 869-881.
"Influence of Calcium, Potassium, and Magnesium on Cornus florida L. Density and Resistance to Dogwood Anthracnose." Plant and Soil 290, no. 1-2 (2006): 189-199.
"New Species of Small Dictyostelids from the Great Smoky Mountains National Park." Mycologia 97, no. 2 (2005): 493-512.
"High Elevation Outcrops and Barrens of the Southern Appalachian Mountains." In Savannas, Barrens, and Rock Outcrop Plant Communities of North America, edited by R. C. Anderson, J. S. Fralish and J. M. Baskin, 119-132. Cambridge: Cambridge University Press, 1999.
"Rates of Nitrogen Mineralization Across an Elevation and Vegetation Gradient in the Southern Appalachians." Plant and Soil 204 (1998): 235-241.
Distribution of Rhododendron catawbiense Michx. Along Some Environmental Gradients, Edited by Mohan K. Wali. Ohio State University, 1996.
Characterization of Secondary Minerals Formed as the Result of Weathering of the Anakeesta Formation, Alum Cave, Great Smoky Mountains National Park, Tennessee In U.S. Geological Survey Open File Report. Reston, VA: U.S. Department of the Interior: U.S. Geological Survey, 1995.
"Acid Deposition Alters Red Spruce Physiology: Laboratory Studies Support Field Observations." Canadian Journal of Forest Research 23, no. 3 (1993): 380-386.
"Foliar Response of Red Spruce Saplings to Fertilization with Ca and Mg in the Great Smoky Mountains National Park." Canadian Journal of Forest Research 23, no. 1 (1993): 89-95.
"Growth and Physiological Changes in Red Spruce Saplings Associated with Acidic Deposition at High Elevations in the Southern Appalachians, USA." Forest Ecology and Management 51, no. 1-3 (1992): 43-51.
Nitrate Export from a Great Smoky Mountain Spruce-Fir Watershed In Third Annual Southern Appalachian Man and the Biosphere Conference. Gatlinburg, TN: Tennessee Valley Authority, 1992.
"Increased Dark Respiration and Calcium Deficiency of Red Spruce in Relation to Acidic Deposition at High-elevation Southern Appalachian Mountain Sites." Canadian Journal of Forest Research 21 (1991): 1234-1244.
Effects of Acidic Precipitation on the Soil Chemistry and Bioavailability of Aluminum, Manganese, and Copper. Oak Ridge, TN: Oak Ridge National Laboratory, 1990.
Effects of Acidic Precipitation on the Soil Chemistry and Bioavailability of Aluminum, Manganese, and Copper. Knoxville, TN: University of Tennessee, 1989.
"A Multivariate Analysis of Forest Communities in the Western Great Smoky Mountains National Park." American Midland Naturalist 118, no. 1 (1987): 107-120.
