Featured Publications & Products

• Long, Robert P.; Horsley, Stephen B.; Hall, Thomas J. 2011. Long-term impact of liming on growth and vigor of northern hardwoods.
• Knight, Kathleen S.; Herms, Daniel A.; Cardina, John; Long, Robert; Gandhi, Kamal J.K.; Herms, Catharine P. 2011. Emerald ash borer aftermath forests: the future of ash ecosystems.
• Balci, Y.; Long, R.P.; Mansfield, M.; Balser, D.; MacDonald, W.L. 2010. Involvement of Phythophthora species in white oak (Quercus alba) decline in southern Ohio.
• Knight, Kathleen S.; Herms, Daniel A.; Cardina, John; Long, Robert; Rebbeck, Joanne; Gandhi, Kamal J.K.; Smith, Annemarie; Klooster, Wendy S.; Herms, Catherine P.; Royo, Alejandro A. 2010. Emerald ash borer aftermath forests: The dynamics of ash mortality and the responses of other plant species.
• Knight, Kathleen S.; Long, Robert P.; Rebbeck, Joanne; Herms, Daniel A.; Cardina, John; Herms, Catherine P.; Gandhi, Kamal J.K.; Smith, Annemarie; Costilow, Kyle C.; Long, Lawrence C.; Cappaert, David L. 2010. Effects of emerald ash borer (Agrilus planipennis) on forest ecosystems.

Publications

• Pile, Lauren S.; Rebbeck, Joanne ; Brose, Patrick H.; Long, Robert P. 2019. Black and Chestnut Oak Seedling Response to Glaciated Soil: Implications for Northward Expansion in Response to Climate Warming.
• Bailey, Scott W.; Long, Robert P.; Horsley, Stephen B. 2019. Comment on "Long-term decline of sugar maple following forest harvest, Hubbard Brook Experimental Forest, New Hampshire".
• Long, Robert ; Wiemann, Michael ; Kuster, Thomas A. 2018. The Frequency and Anatomical Characteristics of Anomalous Dark Rings in Black Cherry, and Their Relation to Cherry Scallop Shell Moth Defoliations.
• Turcotte, Richard M.; Larcenaire, Craig ; Long, Robert ; Martin, Danielle K.H.; Barringer, Lawrence . 2018. The Spotted Wing Drosophila, Drosophila suzukii (Diptera: Drosophilidae): A New Pest of Concern for Black Cherry, Prunus serotina, on the High Allegheny Plateau in Pennsylvania.
• Smith, Annemarie; Herms, Daniel A.; Long, Robert P.; Gandhi, Kamal J.K. 2015. Community composition and structure had no effect on forest susceptibility to invasion by the emerald ash borer (Coleoptera: Buprestidae).
• Moore, Jean-David; Ouimet, Rock; Long, Robert P.; Bukaveckas, Paul. A. 2015. Ecological benefits and risks arising from liming sugar maple dominated forests in northeastern North America.
• Long, Robert P.; Bailey, Scott W.; Horsley, Stephen B.; Hall, Thomas J.; Swistock, Bryan R.; DeWalle, David R. 2015. Long-term effects of forest liming on soil, soil leachate, and foliage chemistry in northern Pennsylvania.
• Iverson, Louis; Knight, Kathleen S.; Prasad, Anantha; Herms, Daniel A.; Matthews, Stephen; Peters, Matthew; Smith, Annemarie; Hartzler, Diane M.; Long, Robert; Almendinger, John. 2015. Potential species replacements for black ash (Fraxinus nigra) at the confluence of two threats: Emerald ash borer and a changing climate.
• Knight, Kathleen S.; Brown, John P.; Long, Robert P. 2013. Factors affecting the survival of ash (Fraxinus spp.) trees infested by emerald ash borer (Agrilus planipennis).
• Long, Robert P.; Trimpey, David W.; Wiemann, Michael C.; Stout, Susan L. 2012. Anomalous dark growth rings in black cherry.
• Hutchinson, Todd F.; Yaussy, Daniel A.; Long, Robert P.; Rebbeck, Joanne; Sutherland, Elaine Kennedy. 2012. Long-term (13-year) effects of repeated prescribed fires on stand structure and tree regeneration in mixed-oak forests.
• Hutchinson, Todd F.; Long, Robert P.; Rebbeck, Joanne; Sutherland, Elaine Kennedy; Yaussy, Daniel A. 2012. Repeated prescribed fires alter gap-phase regeneration in mixed-oak forests.
• Long, Robert P.; Brose, Patrick H.; Horsley, Stephen B. 2012. Responses of northern red oak seedlings to lime and deer exclosure fencing in Pennsylvania.
• Iverson, Louis; Prasad, Anantha; Knight, Kathleen S.; Herms, Daniel A.; Matthews, Stephen; Peters, Matthew; Smith, Annemarie; Long, Robert. 2011. Potential replacements for northwoods black ash in a changing climate: the confluence of two challenges.
• Nagle, Annemarie M.; Long, Robert P.; Madden, Laurence V.; Bonello, Pierluigi. 2010. Association of Phytophthora cinnamomi with white oak decline in southern Ohio.
• Herms, Daniel A.; Gandhi, Kamal J.K.; Smith, Annemarie; Cardina, John; Knight, Kathleen S.; Herms, Catherine P.; Long, Robert P.; McCullough, Deborah G. 2009. Ecological impacts of emerald ash borer in forests of southeast Michigan.
• Hutchinson, Todd; Long, Robert; Ford, Robert; Sutherland, Elaine Kennedy. 2009. Fire history and the establishment of oaks and maples in second-growth forests.
• Long, Robert P.; Horsley, Stephen B.; Hallett, Richard A.; Bailey, Scott W. 2009. Sugar maple growth in relation to nutrition and stress in the northeastern United States.
• Hutchinson, Todd F.; Long, Robert P.; Ford, Robert D.; Sutherland, Elaine Kennedy. 2008. Fire history and the establishment of oaks an maples in second-growth forests.
• Knight, Kathleen S.; Long, Robert P.; Rebbeck, Joanne; Smith, Annemarie; Gandhi, Kamal; Herms, Daniel A. 2008. How fast will trees die A transition matrix model of ash decline in forest stands infested by emerald ash borer.
• Horsley, Stephen B.; Bailey, Scott W.; Ristau, Todd E.; Long, Robert P.; Hallett, Richard A. 2008. Linking environmental gradients, species composition, and vegetation indicators of sugar maple health in the northeastern United States.
• Gandhi, Kamal J.K.; Smith, Annemarie; Long, Robert P.; Taylor, Robin A.J.; Herms, Daniel A. 2008. Three-year progression of emerald ash borer-induced decline and mortality in southeastern Michigan.
• Balci, Y.; Balci, S.; Eggers, J.; MacDonald, W.L.; Juzwik, J.; Long, R.P.; Gottschalk, K.W. 2007. Phytophthora spp. associated with forest soils in eastern and north-central U.S. oak ecosystems.
• Smith, Annemarie; Herms, Daniel A.; Long, Robert P. 2007. Impact of emerald ash borer on forests within the Huron River watershed of southeast Michigan.
• Gandhi, Kamal J.K.; Smith, Annemarie; Long, Robert P.; Herms, Daniel A. 2007. Patterns of emerald ash borer-induced ash decline and mortality in the forests of southeastern Michigan.
• Knight, Kathleen S.; Long, Robert P.; Rebbeck, Joanne. 2007. Predicting emerald ash borer-induced changes in forest tree species composition.
• McEwan, Ryan W.; Hutchinson, Todd F.; Long, Robert P.; Ford, Robert D.; McCarthy, Brian C. 2007. Temporal and spatial patterns in fire occurrence during the establishment of mixed-oak forests in eastern North America.
• Hallett, Richard A.; Bailey, Scott W.; Horsley, Stephen B.; Long, Robert P. 2006. Influence of nutrition and stress on sugar maple at a regional scale.
• Long, Robert P.; Apsley, David K; Rebbeck, Joanne. 2006. Oak and maple stump sprout dynamics in response to thinning and burning treatments in southern Ohio.
• Rebbeck , Joanne; Yaussy, Daniel; Iverson, Louis; Hutchinson, Todd; Long, Robert; Bova, Anthony; Dickinson, Matthew. 2006. Use of temperature-sensitive paints as an index of heat output from fire.
• Smith, Annemarie; Herms, Daniel A., Herms.; Long, Robert P. 2005. Does Community Structure Influence Forest Susceptibility and Response to Emerald Ash Borer.
• Smith, Annemarie; Herms, Daniel A.; Long, Robert P. 2005. Does forest community structure influence susceptibility and response to emerald ash borer.
• Rebbeck, Joanne; Hutchinson, Todd F.; Long, Robert P.; Long, Robert P. 2005. Invasive Plants Affecting the Management of Ohio's Forests.
• Bailey, S.W.; Horsley, S.B.; Long, R.P. 2005. Thirty years of change in forest soils of the Allegheny Plateau, Pennsylvania.
• Iverson, Louis R.; Yaussy, Daniel A.; Rebbeck, Joanne; Hutchinson, Todd F.; Long, Robert P.; Prasad, Anantha M. 2004. A comparison of thermocouples and temperature paints to monitor spatial and temporal characteristics of landscape-scale prescribed fires.
• Hutchinson, Todd; Rebbeck, Joanne; Long, Robert. 2004. Abundant Establishment of Ailanthus altissima (Tree-of-heaven) after Restoration Treatments in an Upland Oak Forest.
• Bailey, S.W.; Horsley, S.B.; Long, R.B.; Hallett, R.A. 2004. Division S-7 - forest & range soils. Influence of edaphic factors on sugar maple nutrition and health on the Allegheny Plateau.
• Riccardi, Cynthia L.; McCarthy, Brian C.; Long, Robert P. 2004. Oak Seed Production, Weevil (Coleoptera: Curculionidae) Populations, and Predation Rates in Mixed-oak Forests of Southeast Ohio.
• Long, Robert P.; Rebbeck, Joanne; Traylor, Zachary P. 2004. Oak Stump Sprout Health and Survival Following Thinning and Prescribed Burning in Southern Ohio.
• Yaussy, Daniel A.; Hix, David M.; Long, Robert P.; Goebel, P. Charles, eds. 2004. Proceedings. 14th Central Hardwood Forest Conference.
• Rebbeck, Joanne; Long, Robert; Yaussy, Daniel. 2004. Survival of Hardwood Seedlings and Saplings Following Overstory Thinning and Prescribed Fires in Mixed-Oak Forests of Southern Ohio.
• Rebbeck, Joanne; Long, Robert P.; Yaussy, Daniel A. 2004. Survival of Hardwood Seedlings and Saplings One Year Following a Prescribed Fire and Overstory Thinning in Southeastern Ohio.
• Davis, D. D.; Long, R. P. 2003. Climate-tree growth models in relation to long-term growth trends of white oak in Pennsylvania.
• Yaussy, Daniel; Rebbeck, Joanne; Iverson, Louis; Hutchinson, Todd; Long, Robert. 2003. Comparison of a low-tech vs. a high-tech method to evaluate surface fire temperatures.
• Scherzer, Amy J.; Long, Robert P.; Rebbeck, Joanne. 2003. Foliar nutrient concentrations of oak, hickory, and red maple.
• Wargo, Philip M.; Minocha, Rakesh; Wong, Betty L.; Long, Robert P.; Horsley, Stephen B.; Hall, Thomas J. 2003. Measuring stress and recovery in limed sugar maple on the Allegheny Plateau of north-central Pennsylvania.
• Iverson, Louis R.; Yaussy, Daniel; Rebbeck, Joanne; Hutchinson, Todd; Long, Robert; McCarthy, Brian; Riccardi, Cynthia; Prasad, Anantha. 2003. Spatial and temporal distribution of fire temperatures from prescribed fires in the mixed oak forests of southern Ohio.
• Horsley, Stephen B.; Long, Robert P.; Bailey, Scott W.; Hallett, Richard A.; Wargo, Philip M. 2002. Health of eastern North American sugar maple forests and factors affecting decline.
• Wargo, Philip M.; Minocha, Rakesh; Wong, Betty; Long, Robert P.; Horsley, Stephen B.; Hall, Thomas J. 2002. Measuring changes in stress and vitality indicators in limed sugar maple on the Allegheny Plateau in north-central Pennsylvania.
• Williams, David W.; Long, Robert P.; Wargo, Philip M.; Liebhold, Andrew M. 2000. Effects of climate change on forest insect and disease outbreaks.
• Horsley, Stephen B.; Long, Robert P.; Bailey, Scott W.; Hallett, Richard A.; Hall, Thomas J. 2000. Factors associated with the decline disease of sugar maple on the Allegheny Plateau.
• Horsley, Stephen B.; Long, Robert P.; Bailey, Scott W.; Hallett, Richard A.; Hall, Thomas J. 1999. Factors contributing to sugar maple decline along topographic gradients on the glaciated and unglaciated Allegheny Plateau.
• Hallett, Richard A.; Horsley, Stephen B.; Long, Robert P.; Bailey, Scott W.; Hall, Thomas J. 1999. Foliar chemistry of sugar maple: a regional view.
• Long, Robert P.; Horsley, Stephen B.; Lilja, Paul R. 1999. Impact of forest liming on growth, vigor, and reproduction of sugar maple and associated hardwoods.
• Bailey, Scott W.; Horsley, Stephen B.; Long, Robert P.; Hallett, Richard A. 1999. Influence of geologic and pedologic factors on health of sugar maple on the Allegheny Plateau.
• Horsley, Stephen B.; Long, Robert P.; eds., . 1999. Sugar maple ecology and health: proceedings of an international symposium.
• McQuattie, Carolyn J.; Long, Robert P.; Hall, Thomas J. 1999. Sugar maple seedling anatomy and element localization at forest sites with differing nutrient levels.
• Long, Robert P.; Horsley, Stephen B.; Lilja, Paul R. 1997. Impact of forest liming on growth and crown vigor of sugar maple and associated hardwoods.
• McClenahen, J. R.; Long, R. P. 1995. Variability in oak forest herb layer communities.

Research Highlights

Highlight	Title	Year
NRS-2016-107	Black Cherry Crown Health and Mortality on the Allegheny National Forest Black cherry, an important timber and wildlife species in the Allegheny hardwood forest, is suffering from poor crown health and increased morta ...	2016
NRS-2017-57	Black cherry regeneration difficulties: Are They Related to Stand Age or Something Else? Forest managers report that black cherry regeneration is impeded by poor and erratic seed production. Tree stand age has been suggested as one o ...	2017
NRS-2016-130	Changes in Black Cherry on the Allegheny Plateau Increased tree mortality, decreased seed production, and seedling growth. Managers and scientists have been observing these changes in black che ...	2016
NRS-2014-076	Liming Effects Help Maintain Sugar Maple Growth and Health and Persist for More Than 20 years Long-term inputs of acidic deposition have depleted soils of calcium (Ca) and magnesium (Mg) on ridge-top, unglaciated sites in Pennsylvania. Su ...	2014
NRS-2015-140	Long-Term Effects of Forest Liming on Soil, Soil Leachate, and Foliage Chemistry in Northern Pennsylvania In many areas of the northeastern United States and Canada, base cations have been depleted by long-term inputs of acidic deposition. Forest lim ...	2015
NRS-2017-83	Using fertilizer to promote diverse seedling development in Allegheny hardwood forests Fertilizing the forest understory slows the development of dominance by sweet birch, favors development of black cherry following overstory remo ...	2017