Joan L. Walker, PhD

Treesearch Publications

• Connor D. Crouch, Benjamin O. Knapp, Michael C. Stambaugh, Susan Cohen, Joan L. Walker, G. Geoff.   Wang. 2020. Site preparation for longleaf pine restoration on hydric sites: tree- and stand-level responses 15 years after planting
• Lauren S. Pile, G. Geoff Wang, Joan L. Walker, Patricia A. Layton. 2018. Plant community response to the management of an invasive tree
• Benjamin O. Knapp, Lauren S. Pile, Joan L. Walker, G. Geoff Wang. 2018. Fire effects on a fire-adapted species: response of grass stage longleaf pine seedlings to experimental burning
• Lauren S. Pile, G. Geoff Wang, Thomas A. Waldrop, Joan L. Walker, William C. Bridges, Patricia A. Layton. 2017. Managing an established tree invader: developing control methods for Chinese tallow (Triadica sebifera) in maritime forests
• Lauren S. Pile, G. Geoff Wang, Benjamin O. Knapp, Joan L. Walker, Michael C. Stambaugh. 2017. Chinese tallow (Triadica sebifera) invasion in maritime forests: the role of anthropogenic disturbance and its management implication
• Benjamin O. Knapp, G. Geoff Wang, Joan L. Walker, Huifeng Hu. 2016. Using silvicultural practices to regulate competition, resource availability, and growing conditions for Pinus palustris seedlings underplanted in Pinus taeda forests
• Shawna L. Reid, Joan L. Walker, Abigail Schaaf. 2016. Using multi-spectral landsat imagery to examine forest health trends at Fort Benning, Georgia
• Benjamin O. Knapp, G. Geoff Wang, Joan L. Walker, Robert N. Addington. 2016. Fate of residual canopy trees following harvesting to underplant longleaf pine seedlings in loblolly pine stands in Georgia
• W. Brett Mattingly, John L. Orrock, Cathy D. Collins, Lars A. Brudvig, Ellen I. Damschen, Joseph W. Veldman, Joan L. Walker. 2015. Historical agriculture alters the effects of fire on understory plant beta diversity
• Robert N. Addington, Benjamin O. Knapp, Geoffrey G. Sorrell, Michele L. Elmore, G. Geoff Wang, Joan L. Walker. 2015. Factors affecting broadleaf woody vegetation in upland pine forests managed for longleaf pine restoration
• Benjamin O. Knapp, G. Geoff Wang, Joan L. Walker, Huifeng Hu. 2015. From loblolly to longleaf: fifth-year results of a longleaf pine restoration study at two ecologically distinct sites
• Joseph W. Veldman, Lars A. Brudvig, Ellen I. Damschen, John L. Orrock, W. Brett Mattingly, Joan L. Walker. 2014. Fire frequency, agricultural history and the multivariate control of pine savanna understorey plant diversity
• Benjamin O. Knapp, Joan L. Walker, G. Geoff Wang, Huifeng Hu, Robert N.  Addington. 2014. Effects of overstory retention, herbicides, and fertilization on sub-canopy vegetation structure and functional group composition in loblolly pine forests restored to longleaf pine
• Lars A. Brudvig, John L. Orrock, Ellen I. Damschen, Cathy D. Collins, Philip G. Hahn, W. Brett Mattingly, Joseph W. Veldman, Joan L. Walker. 2014. Land-use history and contemporary management inform an ecological reference model for longleaf pine woodland understory plant communities
• Soung Ryoul Ryu, G. Geoff Wang, Joan L. Walker. 2013. Factors influencing loblolly pine stand health in Fort Benning, Georgia, USA
• Benjamin O. Knapp, G. Geoff Wang, Joan L. Walker. 2013. Effects of canopy structure and cultural treatments on the survival and growth of Pinus palustris Mill. seedlings underplanted in Pinus taeda L. stands
• Benjamin O. Knapp, Joan L. Walker. 2013. Using existing growth models to predict RCW habitat development following site preparation: pitfalls of the process and potential growth response
• Soung-Ryoul Ryu, G. Geoff Wang, Joan L. Walker. 2013. The health of loblolly pine stands at Fort Benning, GA
• Evelyn Wenk, G. Geoff Wang, Joan L. Walker. 2013. Understory fuel variation at the Carolina Sandhills National Wildlife Refuge: a description of chemical and physical properties
• Huifeng Hu, Benjamin O. Knapp, G. Geoff Wang, Joan L. Walker. 2013. Effects of canopy treatments on early growth of planted longleaf pine seedlings and ground vegetation in North Carolina: a preliminary study
• Christopher M. Oswalt, Jason Cooper, Dale Brockway, Horace Brooks, Joan L. Walker, Kris Connor, Sonja Oswalt, Roger Conner. 2012. History and current condition of longleaf pine in the Southern United States
• Huifeng Hu, G.Geoff Wang, Joan L. Walker, Benjamin O. Knapp. 2012. Silvicultural treatments for converting loblolly pine to longleaf pine dominance: Effects on resource availability and their relationships with planted longleaf pine seedlings
• Huifeng Hu, G.Geoff Wang, Joan L. Walker, Benjamin O. Knapp. 2012. Silvicultural treatments for converting loblolly pine to longleaf pine dominance: Effects on planted longleaf pine seedlings
• Evelyn Wenk, G. Geoff Wang, Joan L. Walker. 2011. Within-stand variation in understorey vegetation affects fire behaviour in longleaf pine xeric sandhills
• Ben Knapp, Wang Geoff, Huifeng Hu, Joan L. Walker, Carsyn Tennant. 2011. Restoring longleaf pine (Pinus palustris Mill.) in loblolly pine (Pinus taeda L.) stands: Effects of restoration treatments on natural loblolly pine regeneration
• Bryan Mudder, G. Geoff Wang, Joan L. Walker, J. Drew Lanham, Ralph Costa. 2010. Effects of fire season on vegetation in longleaf pine (Pinus palustris) forests
• Ben Knapp, G. Geoff Wang, Joan L. Walker. 2010. Artificially regenerating longleaf pine on wet sites: preliminary analysis of effects of site preparation treatments on early survival and growth
• Joan L. Walker, Andrea Silletti, Susan Cohen. 2010. Composition and structure of managed pine stands compared to reference longleaf pine sites on Marine Corps Base Camp Lejeune, North Carolina
• Benjamin O. Knapp, G. Geoff Wang, Joan L. Walker, Susan Cohen. 2006. Effects of site preparation treatments on early growth and survival of planted longleaf pine (Pinus palustris Mill.) seedlings in North Carolina
• Joan L. Walker, Andrea Silletti. 2006. Restoring the ground layer of longleaf pine ecosystems
• Susan Cohen, Joan L. Walker. 2006. Early longleaf pine seedling survivorship on hydric soils
• Benjamin O. Knapp, G. Geoff Wang, Joan L. Walker, David H. van Lear. 2006. Can root biomass of white oak advance regeneration be reliably predicted from diameter and height?
• Benjamin O. Knapp, G. Geoff Wang, Joan L. Walker. 2006. Early growth of planted longleaf pine seedlings in relation to light, soil moisture, and soil temperature
• Benjamin O. Knapp, G. Geoff Wang, David H. Van Lear, Joan L. Walker. 2006. Predicting root biomass of burned and unburned white oak advance reproduction from diameter and height
• Dale Brockway, Kenneth Outcalt, Jim M. Guldin, William D. Boyer, Joan L. Walker, Craig Rudolph, Robert Rummer, James Barnett, Shibu Jose, Jarek Nowak. 2005. Uneven-aged management of longleaf pine forests: a scientist and manager dialogue
• Joan L. Walker, Andrea Silletti. 2005. A three-year demographic study of Harper's beauty (Harperocallis flava McDaniel), an endangered Florida endemic
• Joan L. Walker, Brian P. van Eerden, David Robinson, Mike Hausch. 2004. Burning and chopping for woodpeckers and wiregrass?
• M.J.W. Godt, Joan L. Walker, J.L. Hamrick. 2004. Allozyme diversity in Macbridea alba (Lamiaceae), an endemic Florida mint
• Andrea Silletti, Joan L. Walker. 2003. Adaptive cluster sampling: An efficient method for assessing inconspicuous species
• Gregory P. Smith, Victor B. Shelburne, Joan L. Walker. 2002. Structure and Composition of Vegetation of Longleaf Pine Plantations Compared to Natural Stands Occurring Along an Environmental Gradient at the Savannah River Site
• Theresa Pitts-Singer, James Hanula, Joan L. Walker. 2002. Insect Pollinators of Three Rare Plants in a Florida Longleaf Pine Forest
• Dana Madsen Schulze, Joan L. Walker, Timothy P. Spira. 2002. Germination and Seed Bank Studies of Macbridea alba (Lamiaceae), a Federally Theatened Plant
• Peter S. White, Jonathan Harrod, Joan L. Walker, Anke Jentsch. 2000. Disturbance, scale, and boundary in wilderness management
• Peter S. White, Jonathan Harrod, Joan L. Walker, Anke Jentsch. 2000. Disturbance, Scale, and Boundary in Wilderness Management
• James Barnett, Rod Busby, Floyd Bridgwater, Don English, Jim Hanula, Nancy Herbert, Kurt Johnsen, Brad Kard, Kier D. Klepzig, Charlie McMahon, Jeffrey P. Prestemon, Tim Rials, Bob Rummer, Mike Shelton, Ron Thill, Tom Waldrop, Joan L. Walker, Nancy Walters. 2000. Sustainability and productivity of southern pine ecosystems
• Joan L. Walker. 1999. Longleaf pine forests and woodlands: old growth under fire!
• Joan L. Walker. 1999. Longleaf Pine Ecosystem Restoration on Small and Mid-Sized Tracts
• Wallace Covington, William A. Niering, Ed Starkey, Joan L. Walker. 1998. Ecosystem Restoration and Management: Scientific Principles and Concepts\t
• Joan L. Walker, Robert K. Peet. 1983. Composition and species diversity of pine-wiregrass savannas of the Green Swamp, North Carolina

• Center or Group
  

  Restoring and Managing Longleaf Pine Ecosystems (SRS-4158)

  https://research.fs.usda.gov/srs/centers/longleaf
  Station

  Southern Research Station

• University of North Carolina at Chapel Hill, Ph.D., Biology, 1985