Mary Ann Fajvan
180 Canfield St.
Contact Mary Ann Fajvan
- In 2005-07 I established two new research projects using silvicultural treatments in an attempt to make stands more resistant to hemlock woolly adelgid (HWA) and beech bark disease. For HWA, I selected four non-infested hemlock stands on the Allegheny National Forest and designed a thinning study to reduce stand density and improve hemlock vigor before HWA attack. We are now expanding the study into New England. We will examine growth changes in released trees as well as monitor their foliar nutrient content over time. The objective of the beech bark disease study is to determine if visually resistant beech trees can serve as a source of resistant beech regeneration as part of the shelterwood regeneration method. The project is also on the Allegheny NF and involves using herbicides to eliminate nonresistant beech regeneration.
- Two other new studies involve (1) modeling tree regeneration height growth in oak shelterwood studies and (2) using dendrochronolgy to model growth in mature oak forests.
My research program focuses on studies of stand dynamics and silviculture in oak-dominated forests and associated hemlock forests in response to natural and human disturbances, including invasive species. I would like to develop new projects that examine the combined disturbance effects of exploitative harvesting practices, invasive species, and over browsing by white-tailed deer on stand development.
Why This Research is Important
My research examines the dynamics of how forests change in relationship to natural and human disturbances. Understanding these ecological trends assists scientists, managers and landowners in maintaining forest sustainability.
- University of Maine, Ph.D. Quantitative Silviculture 1991
- Yale School of Forestry and Environmental Studies, M.S. Silviculture 1983
- Rutgers University, Cook College, B.S. Natural Resource Management 1981
- Society of American Foresters
- Ecological Society of America
Featured Publications & Products
- Fajvan, Mary Ann; Bohall Wood, Petra. 2010. Maintenance of eastern hemlock forests: Factors associated with hemlock vulnerability to hemlock woolly adelgid.
- Rentch, James; Fajvan, Mary Ann; Evans, Richard A.; Onken, Brad. 2009. Using dendrochronology to model hemlock woolly adelgid effects on eastern hemlock growth and vulnerability.
- Fajvan, Mary Ann; Rentch, Jim; Gottschalk, Kurt W. 2009. The effects of thinning and gypsy moth defoliation on wood volume growth in oaks.
- Rentch, James; Fajvan, Mary Ann; Evans, Richard; Onken, Brad. 2008. Using dendrochronology to model hemlock woolly adelgid effects on eastern hemlock growth and vulnerability.
- Fajvan, Mary Ann. 2008. The role of silvicultural thinning in eastern forests threatened by hemlock woolly adelgid (Adelges tsugae).
- McWilliams, William H.; Westfall, James A.; Brose, Patrick H.; Dey, Daniel C.; D'Amato, Anthony W.; Dickinson, Yvette L.; Fajvan, Mary Ann; Kenefic, Laura S.; Kern, Christel C.; Laustsen, Kenneth M.; Lehman, Shawn L.; Morin, Randall S.; Ristau, Todd E.; Royo, Alejandro A.; Stoltman, Andrew M.; Stout, Susan L. 2018. Subcontinental-scale patterns of large-ungulate herbivory and synoptic review of restoration management implications for midwestern and northeastern forests.
- Piatek, Kathryn B.; Fajvan, Mary Ann; Turcotte, Richard M. 2017. Thinning effects on foliar elements in eastern hemlock: implications for managing the spread of the hemlock woolly adelgid.
- Briseno, Martin Alfonso Mendoza; Fajvan, Mary Ann; Sotelo, Juan Manuel Chacon; Martinez, Alejandro Velazquez; Silva, Antonio Quinonez. 2014. Silvicultural recommendations for the management of ponderosa pine forest.
- Turcotte, Richard M.; Elliott, Thomas R.; Fajvan, Mary Ann; Park, Yong-Lak; Snider, Daniel A.; Tobin, Patrick C. 2012. Effects of ice storm damage on hardwood survival and growth in Ohio.
- Brown, John; Lister, Andrew J.; Fajvan, Mary Ann; Ruefenacht, Bonnie; Mazzarella, Christine. 2012. Modeling forest ecosystem changes resulting from surface coal mining in West Virginia.
- Fajvan, Mary Ann; Gottschalk, Kurt W. 2012. The effects of silvicultural thinning and Lymantria dispar L. defoliation on wood volume growth of Quercus spp..
- DeLuca, Travis; Fajvan, Mary Ann; Miller, Gary. 2009. Diameter-limit harvesting: effects of residual trees on regeneration dynamics in Appalachian hardwoods.
- Fajvan, Mary Ann; Rentch, Jim; Gottschalk, Kurt. 2008. The effects of thinning and gypsy moth defoliation on wood volume growth in oaks.
- Fajvan, Mary Ann; Fajvan, Mary Ann. 2006. Research on Diameter-Limit Cutting in Central Appalachian Forests.
- Marsh, Michael A.; Fajvan, Mary Ann; Huebner, Cynthia D.; Schuler, Thomas M.; Schuler, Thomas M. 2005. The Effects of Timber Harvesting and Prescribed Fire on Invasive Plant Dynamics in the Central Appalachians.
- Brashears, Mark Benjamin; Fajvan, Mary Ann; Schuler, Thomas M. 2004. An assessment of canopy stratification and tree species diversity following clearcutting in Central Appalachian hardwoods.
- Dorsey, Wade; Fajvan, Mary Ann; Fajvan, Mary Ann. 2000. Effects of Shelterwood Harvesting and Prescribed Fire on Regeneration Structure.
- Graves, Aaron T.; Fajvan, Mary Ann; Miller, Gary W. 2000. The effects of thinning intensity on snag and cavity tree abundance in an Appalachian hardwood stand.
- Schuler, Thomas M.; Fajvan, Mary Ann. 1999. Understory tree characteristics and disturbance history of a central Appalachian forest prior to old-growth harvesting.
- Fajvan, Mary Ann; Grushecky, Shawn T. 1997. The effects of partial cutting practices on forest stand structure in Appalachian hardwood forests.
- Gribko, Linda S.; Hilt, Donald E.; Fajvan, Mary Ann. 1995. A generalized ingrowth model for the northeastern United States.
|Collaboration seeks to preserve Chesapeake Bay Watershed health in the face of hemlock decline|
Few studies have examined how insect outbreaks affect landscape-level hydrologic processes. Anticipating hydrologic impacts resulting from the d ...
|Thinning Effects on Foliar Elements in Eastern Hemlock: Implications for Managing the Spread of Hemlock Woolly Adlegid|
With the imminent entrance of hemlock woolly adlegid (HWA) into forest stands in the Allegheny National Forest in Pennsylvania, it was critical ...