Richard Hallett, PhD

Treesearch Publications

• Richard Hallett, Nancy Falxa Sonti, M.R. Piana, Ronald S. Zalesny Jr. 2026. Early establishment performance of hybrid Populus and Salix in canopy gaps of a post emerald ash borer urban forest
• M.R. Piana, Richard Hallett, Vince D'Amico, Nancy Falxa Sonti, T.L.E. Trammell. 2026. Testing tomorrow’s oak management today: Urban silviculture networks advancing regional management
• Ruth D. Yanai, James B. Shanley, Jacob E. Beidler, Richard Hallett, Byung B. Park, Thomas G. Siccama, Timothy J. Fahey. 2026. Cross-site comparison of ecosystem nutrient cycling in hardwood and conifer forests on contrasting soils
• Samantha E. Fuentes-Gigliotti, Max R. Piana, Richard Hallett, Maximilian Blaustein, Dhan Parker, John L. Jensen, AeLin Compton, Luke Rhodes, Myla F.J. Aronson. 2025. The effects of pre-planting treatment strategies on understory vegetation in an urban forest patch
• Lara Roman, Natalie S. van Doorn, E. Gregory McPherson, Bryant C. Scharenbroch, Jason G. Henning, Johan P.A. Ӧstberg, Lee S. Mueller, Andrew K. Koeser, John Mills, Richard Hallett, John E. Sanders, John J. Battles, Deborah Boyer, Jason P. Fristensky, Sarah K. Mincey, Paula J. Peper, Jess Vogt. 2025. Surveillance des arbres urbains : guide de terrain
• Natalie S. van Doorn, Lara Roman, E. Gregory McPherson, Bryant C. Scharenbroch, Jason G. Henning, Johan P.A. Östberg, Lee S. Mueller, Andrew K. Koeser, John Mills, Richard Hallett, John E. Sanders, John Battles, Debra J. Boyer, Jason P. Fristensky, Sarah K. Mincey, Paula J. Peper, Jessica M. Vogt. 2025. Surveillance des arbres urbains: guide des ressources
• Nancy F. Sonti, Matthew E. Baker, Michael Allman, Richard Hallett, Michelle P. Katoski, Katherine Lautar, Max R. R. Piana, Clara C. Pregitzer. 2025. Whose woods are these? Forest patch characteristics and ownership across cities of the eastern United States
• Saidan Qi, Zhongqi Cheng, Richard Hallett, Sara P. Egendorf, Andrew B. Reinmann, Peter M. Groffman. 2024. Feasibility of constructed soils for tree planting – A pilot study in New York City
• Ravneet Kaur, Richard Hallett, Navé Strauss. 2024. Building Urban Forest Resilience to Sea Level Rise: A GIS-Based Climate Adaptation Tool for New York City
• Lara Roman, Natalie S. van Doorn, E. Gregory McPherson, Bryant C. Scharenbroch, Jason G. Henning, Johan P.A. Ӧstberg, Lee S. Mueller, Andrew K. Koeser, John Mills, Richard Hallett, John E. Sanders, John J. Battles, Deborah J. Boyer, Jason P. Fristensky, Sarah K. Mincey, Paula J. Peper, Jess Vogt. 2024. Monitoreo de árboles urbanos: una guía de campo
• Kayla Warner, Nancy Falxa Sonti, Elizabeth M. Cook, Richard Hallett, Lucy R. Hutyra, Andrew B. Reinmann. 2024. Urbanization exacerbates climate sensitivity of eastern United States broadleaf trees
• Richard Hallett, Max R. R. Piana, Michelle Johnson, Leslie Brandt. 2024. Climate change and urban forests
• Levon M. Bigelow, Robert T. Fahey, Jason Grabosky, Richard Hallett, Jason G. Henning, Michelle Johnson, Lara Roman. 2024. Predictors of street tree survival in Philadelphia: Tree traits, biophysical environment, and socioeconomic context
• Joseph M. Hulbert, Richard Hallett, Helen E. Roy, Michelle Cleary. 2023. Citizen science can enhance strategies to detect and manage invasive forest pests and pathogens
• Max R. R. Piana, Nicholas Pevzner, Richard Hallett. 2023. Beyond the axe: Interdisciplinary approaches towards an urban silviculture
• Nancy Falxa Sonti, Clara C. Pregitzer, Richard Hallett. 2022. Native tree seedling growth and physiology responds to variable soil conditions of urban natural areas
• Elisabeth B. Ward, Danica A. Doroski, Alexander J. Felson, Richard Hallett, Emily E. Oldfield, Sara E. Kuebbing, Mark A. Bradford. 2021. Positive long‐term impacts of restoration on soils in an experimental urban forest
• Jason Smith, Richard Hallett, Maha Deeb, Peter M. Groffman. 2021. Fine‐scale soil heterogeneity at an urban site: implications for forest restoration
• Max R. R. Piana, Richard Hallett, Michelle Johnson, Nancy Falxa Sonti, Leslie Brandt, Myla F. J. Aronson, Mark Ashton, Max Blaustein, David Bloniarz, Ashley A. Bowers, Megan E. Carr, Vince D’Amico, Laura Dewald, Heather Dionne, Danica A. Doroski, Robert T. Fahey, Helen Forgione, Todd Forrest, Jack Hale, Eric Hansen, Lisa Hayden, Sarah Hines, Jessica M. Hoch, Taro Ieataka, Susannah B. Lerman, Charles Murphy, Eliot Nagele, Keith Nislow, Dhan Parker, Clara C. Pregitzer, Luke Rhodes, Jessica Schuler, Alexander Sherman, Tara Trammell, Brittany M. Wienke, Thomas Witmer, Thomas Worthley, Ian Yesilonis. 2021. Climate Adaptive Silviculture for the City: Practitioners and Researchers Co-create a Framework for Studying Urban Oak-Dominated Mixed Hardwood Forests
• Lara Roman, Richard Hallett, Leslie Brandt, Annamarie Rutledge, Phillip Rodbell. 2021. Growing Resilience in Our Urban and Community Forests
• Max R. R. Piana, Clara C. Pregitzer, Richard Hallett. 2021. Advancing management of urban forested natural areas: toward an urban silviculture?
• Ronald S. Zalesny Jr., Andrej Pilipović, Elizabeth Rogers, Joel G. Burken, Richard Hallett, Chung-Ho Lin, Bernard G. McMahon, Neil Nelson, Adam Wiese, Edmund O. Bauer, Larry Buechel, Brent S. DeBauche, Mike Peterson, Ray Seegers, Ryan Vinhal. 2021. Establishment of Regional Phytoremediation Buffer Systems for Ecological Restoration in the Great Lakes Basin, USA. I. Genotype × Environment Interactions
• Andrej Pilipović, Ronald S. Zalesny Jr., Elizabeth Rogers, Bernard G. McMahon, Neil Nelson, Joel G. Burken, Richard Hallett, Chung-Ho Lin. 2021. Establishment of Regional Phytoremediation Buffer Systems for Ecological Restoration in the Great Lakes Basin, USA. II
• Max R. R. Piana, Richard Hallett, Myla F. J. Aronson, Emily Conway, Steven N. Handel. 2021. Natural regeneration in urban forests is limited by early‐establishment dynamics: implications for management
• Nancy Falxa Sonti, Kevin L. Griffin, Richard Hallett, Joe H. Sullivan. 2021. Photosynthesis, fluorescence, and biomass responses of white oak seedlings to urban soil and air temperature effects
• Jenna Zukswert, Richard Hallett, Scott Bailey, Nancy Falxa Sonti. 2021. Using regional forest nutrition data to inform urban tree management in the northeastern United States
• Ronald S. Zalesny Jr., Michael D. Casler, Richard Hallett, Chung-Ho Lin, Andrej Pilipovic. 2021. Bioremediation and soils
• Lara Roman, Natalie S. van Doorn, E. Gregory McPherson, Bryant C. Scharenbroch, Jason G. Henning, Johan P.A. Ӧstberg, Lee S. Mueller, Andrew K. Koeser, John Mills, Richard Hallett, John E. Sanders, John J. Battles, Deborah J. Boyer, Jason P. Fristensky, Sarah K. Mincey, Paula Peper, Jess Vogt. 2020. Urban tree monitoring: a field guide
• Natalie S. van Doorn, Lara Roman, E. Gregory McPherson, Bryant C. Scharenbroch, Jason G. Henning, Johan P.A. Östberg, Lee S. Mueller, Andrew K. Koeser, John Mills, Richard Hallett, John E. Sanders, John Battles, Debra J. Boyer, Jason P. Fristensky, Sarah K. Mincey, Paula Peper, Jessica M. Vogt. 2020. Urban tree monitoring: a resource guide
• Nancy Falxa Sonti, Richard Hallett, Kevin Griffin, Tara Trammell, Joe H. Sullivan. 2020. Chlorophyll fluorescence parameters, leaf traits and foliar chemistry of white oak and red maple trees in urban forest patches
• Jason Smith, Richard Hallett, Peter M. Groffman. 2020. The state factor model and urban forest restoration
• Clara C Pregitzer, Mark S Ashton, Sarah Charlop-Powers, Anthony W D’Amato, Brent R Frey, Bram Gunther, Richard Hallett, Kurt S Pregitzer, Christopher W. W. Woodall, Mark A Bradford. 2019. Defining and assessing urban forests to inform management and policy
• Nancy Falxa Sonti, Richard Hallett, Kevin L. Griffin, Joe H. Sullivan. 2019. White oak and red maple tree ring analysis reveals enhanced productivity in urban forest patches
• Robert P. Long, Stephen Horsley, Scott Bailey, Richard Hallett, Thomas J. Hall. 2019. Sugar maple decline and lessons learned about Allegheny Plateau soils and landscapes
• Elizabeth Rogers, Ronald S. Zalesny Jr., Richard Hallett, William Headlee, Adam Wiese. 2019. Relationships among Root–Shoot Ratio, Early Growth, and Health of Hybrid Poplar and Willow Clones Grown in Different Landfill Soils
• Clara C. Pregitzer, Sarah Charlop-Powers, Silvia Bibbo, Helen M. Forgione, Bram Gunther, Richard Hallett, Mark A. Bradford. 2019. A city-scale assessment reveals that native forest types and overstory species dominate New York City forests
• Michelle Johnson, D.S. Novem Auyeung, Nancy Falxa Sonti, Clara C. Pregitzer, Heather McMillen, Richard Hallett, Lindsay K. Campbell, Helen M. Forgione, Mina Kim, Sarah Charlop-Powers, Erika Svendsen. 2019. Social-ecological research in urban natural areas: an emergent process for integration
• David J. Nowak, Allison Bodine, Robert Hoehn, Alexis Ellis, Satoshi Hirabayashi, Robert Coville, D.S. Novem Auyeung, Nancy Falxa Sonti, Richard Hallett, Michelle Johnson, Emily Stephan, Tom Taggart, Ted Endreny. 2018. The urban forest of New York City
• Richard Hallett, Tanner Hallett. 2018. Citizen science and tree health assessment: How useful are the data?
• Danica A. Doroski, Alexander J. Felson, Mark A. Bradford, Mark P. Ashton, Emily E. Oldfield, Richard Hallett, Sara E. Kuebbing. 2018. Factors driving natural regeneration beneath a planted urban forest
• Richard Hallett, Michelle Johnson, Nancy Falxa Sonti. 2018. Assessing the tree health impacts of salt water flooding in coastal cities: A case study in New York City
• Jennifer Pontius, Ryan Hanavan, Richard Hallett, Bruce D. Cook, Lawrence A. Corp. 2017. High spatial resolution spectral unmixing for mapping ash species across a complex urban environment
• Ronald S. Zalesny Jr., John A. Stanturf, Emile S. Gardiner, Gary S. Bañuelos, Richard Hallett, Amir Hass, Craig M. Stange, James H. H. Perdue, Timothy M. Young, David R. Coyle, William L. Headlee. 2016. Environmental technologies of woody crop production systems
• Clara C. Pregitzer, Nancy Falxa Sonti, Richard Hallett. 2016. Variability in urban soils influences the health and growth of native tree seedlings
• Brady L. Simmons, Richard Hallett, Nancy Falxa Sonti, D. S. N. Auyeung, Jacqueline W. T. Lu. 2016. Long-term outcomes of forest restoration in an urban park
• Emily E. Oldfield, Alexander J. Felson, D. S. Novem Auyeung, Thomas W. Crowther, Nancy Falxa Sonti, Yoshiki Harada, Daniel S. Maynard, Noah W. Sokol, Mark S. Ashton, Robert J. Warren, Richard Hallett, Mark A. Bradford. 2015. Growing the urban forest: tree performance in response to biotic and abiotic land management
• Ryan Hanavan, Jennifer Pontius, Richard Hallett. 2015. A 10-Year assessment of hemlock decline in the Catskill Mountain region of New York state using hyperspectral remote sensing techniques
• Emily E. Oldfield, Alexander J. Felson, Stephen A. Wood, Richard Hallett, Michael S. Strickland, Mark A. Bradford. 2014. Positive effects of afforestation efforts on the health of urban soils
• Jennifer Pontius, Richard Hallett. 2014. Comprehensive methods for earlier detection and monitoring of forest decline
• Ronald S. Zalesny Jr., Richard Hallett, Nancy Falxa Sonti, Adam Wiese, Bruce Birr. 2014. Propagating native Salicaceae for afforestation and restoration in New York City's five boroughs
• Richard Hallett. 2013. Planting forests in NYC: Is the goal restoration, reforestation, or afforestation?
• Richard Hallett. 2013. The value of an urban forest
• Robert P. Long, Stephen Horsley, Richard Hallett, Scott Bailey. 2009. Sugar maple growth in relation to nutrition and stress in the northeastern United States
• Stephen Horsley, Scott Bailey, Todd Ristau, Robert P. Long, Richard Hallett. 2008. Linking environmental gradients, species composition, and vegetation indicators of sugar maple health in the northeastern United States
• Richard Hallett, Jennifer Pontius, Mary Martin, Lucie Plourde. 2008. Evaluating the practical utility of hyperspectral remote sensing imagery: an EAB case study
• Richard Hallett, Jennifer Pontius, Mary Martin, Lucie Plourde. 2008. The practical utility of hyperspectral remote sensing for early detection of emerald ash borer
• Jennifer Pontius, Mary Martin, Lucie Plourde, Richard Hallett. 2008. Hyperspectral remote sensing for early detection of invasive pests
• Richard Hallett, Scott Bailey, Stephen Horsley, Robert P. Long. 2006. Influence of nutrition and stress on sugar maple at a regional scale
• Jennifer Pontius, Richard Hallett, Mary Martin. 2005. Using AVIRIS to assess hemlock abundance and early decline in the Catskills, New York
• Scott Bailey, Stephen Horsley, Robert P. Long, Richard Hallett. 2004. Division S-7 - forest & range soils. Influence of edaphic factors on sugar maple nutrition and health on the Allegheny Plateau
• Stephen Horsley, Robert P. Long, Scott Bailey, Richard Hallett, Philip M. Wargo. 2002. Health of eastern North American sugar maple forests and factors affecting decline
• Marie-Louise Smith, Scott V. Ollinger, Mary E. Martin, John D. Aber, Richard Hallett, Christine L. Goodale. 2002. Direct estimation of aboveground forest productivity through hyperspectral remote sensing of canopy nitrogen
• Stephen Horsley, Robert P. Long, Scott Bailey, Richard Hallett, Thomas J. Hall. 2000. Factors associated with the decline disease of sugar maple on the Allegheny Plateau
• Richard Hallett, Stephen Horsley, Robert P. Long, Scott Bailey, Thomas J. Hall. 1999. Foliar chemistry of sugar maple: a regional view
• Stephen Horsley, Robert P. Long, Scott Bailey, Richard Hallett, Thomas J. Hall. 1999. Factors contributing to sugar maple decline along topographic gradients on the glaciated and unglaciated Allegheny Plateau
• Scott Bailey, Stephen Horsley, Robert P. Long, Richard Hallett. 1999. Influence of geologic and pedologic factors on health of sugar maple on the Allegheny Plateau

Data and Tools

• Dataset
  

  Silvics of North America

  https://research.fs.usda.gov/products/dataandtools/silvics-north-america

• Center or Group
  

  New York City Urban Field Station

  https://research.fs.usda.gov/nrs/centers/nyc
  Station

  Northern Research Station
• Program
  

  Communities and Landscapes of the Urban Northeast

  https://research.fs.usda.gov/nrs/programs/urbanne
  Station

  Northern Research Station
• Project
  

  Stillmeadow PeacePark: Experimental Rehabilitation of an Urban Forest

  https://research.fs.usda.gov/nrs/projects/stillmeadow
  Station

  Northern Research Station
• Project
  

  Creating Climate Resilient Oak Forests in Cities

  https://research.fs.usda.gov/nrs/projects/oaks-cities
  Station

  Northern Research Station
• Project
  

  Agroforestry Phytoremediation Buffer Systems in the Great Lakes Basin

  https://research.fs.usda.gov/nrs/projects/phytoremediation-buffers
  Station

  Northern Research Station
• Project
  

  Urban Silviculture Training Program (Baltimore)

  https://research.fs.usda.gov/nrs/projects/urban-silviculture-training
  Station

  Northern Research Station

Multimedia

• Webinars

  Science x Water: The Shifting Water Balance

  https://research.fs.usda.gov/products/multimedia/webinars/science-x-water-shifting-water-balance
• Webinars

  Science and Practice of Creating Climate Adapted Oak Forests in Cities

  https://research.fs.usda.gov/products/multimedia/webinars/science-and-practice-creating-climate-adapted-oak-forests-cities
• Webinars

  SCIENCE x Forests: Urban Forestry, Community, and Wood Utilization

  https://research.fs.usda.gov/products/multimedia/webinars/science-x-forests-urban-forestry-community-and-wood-utilization

• University of New Hampshire, Ph.D., Natural Resources, 1996
• University of New Hampshire, Durham, NH, M.S., Forestry, 1991
• University of Wisconsin, Madison, WI, B.S., Forest Science, 1984