Howard S. Neufeld

Howard S. Neufeld is a Professor in the Department of Biology at Appalachian State University, with expertise in plant physiological ecology and air pollution impacts. His research focuses on ozone effects on native flora in the Great Smoky Mountains National Park, water relations in plants, and invasive species ecology.

Education

• Ph.D. from University of Georgia (1984)

Neufeld's research examines plant responses to environmental stressors, particularly tropospheric ozone and water stress. His work on cutleaf coneflower, tall milkweed, and Galax urceolata has revealed critical insights into foliar injury mechanisms, antioxidant defenses, and seasonal adaptation strategies. He investigates how invasive species like Microstegium vimineum exploit light gaps and how hydraulic conductance affects plant drought tolerance.

His publication record shows consistent focus on ozone impacts in southern Appalachian ecosystems, with recent work emphasizing seasonal variation in plant responses, stomatal behavior, and biochemical defense mechanisms. Key trends include the development of non-destructive monitoring techniques and spatial analysis of pollution effects across landscapes.

Advising & Grants

• Directed 20 Master's theses on plant ecophysiology, invasive species, and pollution impacts
• Currently mentoring 7 graduate students on lichen nitrogen responses, heavy metal effects, and ozone physiology
• Funded by National Park Service, U.S. EPA, National Geographic Society, and Friends of the Smokies
• Collaborates with researchers from Auburn University, USDA, Oak Ridge, and international institutions

Neufeld maintains active field research in the Great Smoky Mountains National Park and operates laboratory facilities for gas exchange and plant stress analysis, with ongoing projects examining nitrogen deposition effects on lichens and nickel pollution impacts on pines.