Nancy Falxa Sonti, PhD

Treesearch Publications

• Dexter H. Locke, Robillard Amanda, Jesse Caputo, Brett J. Butler, Emma Sass, Nancy Falxa Sonti. 2026. Urban National Landowner Survey: Houston, 2019
• 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
• Jenna Zukswert, Susannah B. Lerman, Dexter H. Locke, Nancy Falxa Sonti, Morgan Grove. 2026. Back Yard Science: Research on Residential Lands
• 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
• Corinne Bassett, Dexter H. Locke, Nancy Falxa Sonti, Jesse Caputo, Brett J. Butler, Iris B. Montague, J. Morgan Grove. 2026. Urban Residential Landowner Interest in Emerging Urban Wood Product Markets: Results from a Multi-City Survey
• Brett J. Butler, Jesse Caputo, J. Morgan Grove, Emily J. Silver, Dexter H. Locke, Amanda Robillard, Emma M. Sass, Nancy Falxa Sonti. 2025. Urban National Landowner Survey: methods and data quality, 2018
• Dexter H. Locke, Jesse Caputo, Amanda Robillard, Emma M. Sass, Nancy Falxa Sonti, Morgan Grove, Brett J. Butler. 2025. Urban National Landowner Survey: Baltimore, 2018
• Miranda H. Mockrin, Matthew E. Baker, Michelle Katoski, Nancy Falxa Sonti, Margaret B. Holland. 2025. Legacies of urbanization and suburbanization on forest patch distribution, ownership, and use: Insights from Baltimore, Maryland
• Andrew K. Koeser, Deborah R. Hilbert, Dexter H. Locke, Christopher B. Riley, Nancy Falxa Sonti. 2025. Increasing Urban Tree Diversity, Quality, and Abundance in the Chesapeake Bay Watershed: Challenges and Opportunities
• Nancy Falxa Sonti, Dexter H. Locke, Samuel Seo, Frederic Chalfant, Ashley Bowers, Matthew Rescott, Christina Herrick, Robert Hoehn, Katie Jennings, Alexander R. Young. 2025. Baltimore's urban forest, 2020
• Nancy Falxa Sonti, Kasey Yturralde, Earl Eutsler, Christina Herrick, Robert Hoehn, Katie Jennings, Lucie Lepine. 2025. Washington, DC's urban forest, 2018
• Selena M. Livas, Dexter H. Locke, Nancy Falxa Sonti. 2025. Urban environmental stewardship networks: How organizations collaborate, share resources, and exchange knowledge within Baltimore, Maryland
• Nancy Falxa Sonti, Jim Westfall, Michael C. Wiemann, Thomas L. Eberhardt. 2025. Influence of site type on wood specific gravity and ash content for urban-grown hardwoods
• Matthew Baker, Ian Yesilonis, Laura Templeton, Beatriz Shobe, Jaelyn Bos, Nancy Falxa Sonti, Katherine Lautar. 2025. Distributed urban forest patch sampling detects edge effects and woodland condition for monitoring and management
• John Paul Schmit, Lea R. Johnson, Matthew Baker, Lindsay Darling, Robert Fahey, Dexter H. Locke, Anita T. Morzillo, Nancy Falxa Sonti, Tara L. E. Trammell, Myla F. J. Aronson, Michelle Johnson. 2025. The influence of urban and agricultural landscape contexts on forest diversity and structure across ecoregions
• Fiona Jevon, Crystal A. Crown, Jeffrey A. G. Clark, Danica A. Doroski, Lindsay Darling, Nancy Falxa Sonti, Ian Yesilonis, Grace Dietsch, Mark Bradford, Clara C. Pregitzer. 2025. Native trees are responsible for the high carbon density in urban natural area forests across eight United States cities
• 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
• Lindsay K. Campbell, Erika Svendsen, Michelle Johnson, Natalia Piland, Dexter H. Locke, Nancy Falxa Sonti, Morgan Grove, Michele Romolini, Heather McMillen, Rachel Dacks, Bryce DuBois, Jesse Sayles, Tischa A. A. Munoz, Laura Landau, Lorien Jasny, Krista Heinlen, Maria Arroyave, Camille McCarthy, David Bloniarz, Brian Goldberg, Gerald Bauer, Travis Warziniack, Sophie Plitt, Julio Onofre, Nicole Heise Vigil, Arantxa Zamora-Rendon, Alejandra García Castro, Nicole Harmelin García, Bryan Flores. 2024. Reflecting on Local Ecological Stewardship, Care, and Action across Two Decades of Research
• Sarah Ponte, Andrew C. Oishi, Nancy Falxa Sonti, Dexter H. Locke, Tuana H. Phillips, Mitchell A. Pavao-Zuckerman. 2024. Interactions between management context and tree water use influence stormwater management potential of urban forests
• Kathryn C. Baer, David J. Nowak, Thomas Brandeis, Kerry Dooley, Kurt Hellman, Jason Henning, Christina Herrick, Robert Hoehn, Katie Jennings, Lucie Lepine, Tonya Lister, Mark Majewsky, Suzanne M. Owen, Nancy Falxa Sonti, Sjana Schanning, Rebekah J. Zehnder. 2024. San Diego’s urban forest, 2017
• Nancy Falxa Sonti, Matthew E. Baker, John J. Lagrosa, Michael Allman, Morgan Grove, Michelle P. Katoski. 2024. Shaping Baltimore’s urban forests: past insights for present-day ecology
• Nancy Falxa Sonti, Dexter H. Locke, Meghan L. Avolio, Karin T. Burghardt, Fred Chalfant, Morgan Grove, Sam Seo, Christopher M. Swan, Phillip Rodbell. 2024. Street tree diversity reveals a legacy of redlining
• Nancy Falxa Sonti, Rachel Riemann, Miranda H. Mockrin, Grant M. Domke. 2023. Expanding wildland-urban interface alters forest structure and landscape context in the northern United States
• Karin T. Burghardt, Meghan L. Avolio, Dexter H. Locke, Morgan Grove, Nancy Falxa Sonti, Christopher M. Swan. 2022. Current street tree communities reflect race‐based housing policy and modern attempts to remedy environmental injustice
• Danielle Mikolajewski, Vince D'Amico, Nancy Falxa Sonti, Cornelia Wilson, Charles E. Flower, Lara Roman, Tara L.E. Trammell. 2022. Restoring the iconic Ulmus americana to urban landscapes: Early tree growth responds to aboveground conditions
• Anita T. Morzillo, Lindsay K. Campbell, Kristen L. King, Katherine J. Lautar, Lydia Scott, Michelle Johnson, Mysha Clarke, Luke Rhodes, Stephanie Pincetl, Nancy Falxa Sonti, Dexter H. Locke, John Paul Schmit, Robert T. Fahey, Matthew E. Baker, Lindsay Darling, Lea R. Johnson. 2022. A tale of urban forest patch governance in four eastern US cities
• Shasha Jiang, Nancy Falxa Sonti, Meghan L. Avolio. 2022. Tree communities in Baltimore differ by land use type, but change little over time
• Nancy Falxa Sonti, Peter M. Groffman, David J. Nowak, Jason G. Henning, Meghan L. Avolio, Emma J. Rosi. 2022. Urban net primary production: Concepts, field methods, and Baltimore, Maryland, USA case study
• Nancy Falxa Sonti, Clara C. Pregitzer, Richard Hallett. 2022. Native tree seedling growth and physiology responds to variable soil conditions of urban natural areas
• 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
• Nancy Falxa Sonti, Jason G. Henning, Ian Yesilonis, Robert Hoehn, David J. Nowak. 2021. Baltimore's Urban Forest, 1999-2014
• Sarah Ponte, Nancy Falxa Sonti, Tuana H. Phillips, Mitchell A. Pavao-Zuckerman. 2021. Transpiration rates of red maple (Acer rubrum L.) differ between management contexts in urban forests of Maryland, USA
• Elsa C. Anderson, Meghan L. Avolio, Nancy Falxa Sonti, Shannon L. LaDeau. 2021. More than green: Tree structure and biodiversity patterns differ across canopy change regimes in Baltimore's urban forest
• 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
• Christopher Edgar, David J. Nowak, Mark Majewsky, Tonya Lister, Jim Westfall, Nancy Falxa Sonti. 2021. Strategic National Urban Forest Inventory for the United States
• 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
• Nancy Falxa Sonti. 2021. Urban plant ecophysiology
• 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
• Jim Westfall, Nancy Falxa Sonti, Michael C. Wiemann, Thomas L. Eberhardt, Chi-Leung So. 2020. Urban tree specific gravity and ash content: A case study from Baltimore, Maryland USA
• Jim Westfall, David J. Nowak, Jason G. Henning, Tonya Lister, Christopher B. Edgar, Mark Majewsky, Nancy Falxa Sonti. 2020. Crown width models for woody plant species growing in urban areas of the U.S.
• Lea R. Johnson, Michelle Johnson, Myla F. J. Aronson, Lindsay K. Campbell, Megan E. Carr, Mysha Clarke, Vince D'Amico, Lindsay Darling, Tedward Erker, Robert T. Fahey, Kristen L. King, Katherine Lautar, Dexter H. Locke, Anita T. Morzillo, Stephanie Pincetl, Luke Rhodes, John Paul Schmit, Lydia Scott, Nancy Falxa Sonti. 2020. Conceptualizing social-ecological drivers of change in urban forest patches
• Emily S. S. Huff, Michelle Johnson, Lara Roman, Nancy Falxa Sonti, Clara C. Pregitzer, Lindsay K. Campbell, Heather McMillen. 2020. A literature review of resilience in urban forestry
• Meghan Avolio, Allison Blanchette, Nancy Falxa Sonti, Dexter H. Locke. 2020. Time Is Not Money: Income Is More Important Than Lifestage for Explaining Patterns of Residential Yard Plant Community Structure and Diversity in Baltimore
• Nancy Falxa Sonti, Lindsay K. Campbell, Erika Svendsen, Michelle Johnson, D.S. Novem Auyeung. 2020. Fear and fascination: Use and perceptions of New York City’s forests, wetlands, and landscaped park areas
• Nancy Falxa Sonti. 2020. Ambivalence in the Woods: Baltimore Resident Perceptions of Local Forest Patches
• 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
• Sarah J. Hines, Lindsay K. Campbell, Nancy Falxa Sonti, Erika Svendsen, David Maddox. 2019. Epilogue: Tracing the lines between storytelling, science, and recovery outcomes
• Sarah J. Hines, Lindsay K. Campbell, Nancy Falxa Sonti, Erika Svendsen, David Maddox. 2019. Background
• Lindsay K. Campbell, Erika Svendsen, Nancy Falxa Sonti, Sarah J. Hines, David Maddox. 2019. Green Readiness, Response, and Recovery: A Collaborative Synthesis
• Laura A. Ogden, Carissa Aoki, Morgan Grove, Nancy Falxa Sonti, William Hall, Dexter H. Locke, Steward T. A. Pickett, Miriam Avins, Katie Lautar, John Lagrosa. 2019. Forest ethnography: An approach to study the environmental history and political ecology of urban 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
• Nancy Falxa Sonti, Erika Svendsen. 2018. Why Garden? Personal and Abiding Motivations for Community Gardening in New York City
• 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
• Clara C. Pregitzer, Nancy Falxa Sonti, Richard Hallett. 2016. Variability in urban soils influences the health and growth of native tree seedlings
• Nancy Falxa Sonti, Lindsay K. Campbell, Michelle Johnson, S. Daftary-Steel. 2016. Long-term outcomes of an urban farming internship program
• Lindsay K. Campbell, Erika Svendsen, Nancy Falxa Sonti, Michelle Johnson. 2016. A social assessment of urban parkland: Analyzing park use and meaning to inform management and resilience planning
• D.S. Novem Auyeung, Lindsay K. Campbell, Michelle Johnson, Nancy Falxa Sonti, Erika Svendsen. 2016. Reading the landscape: citywide social assessment of New York City parks and natural areas in 2013-2014
• Erika Svendsen, Lindsay K. Campbell, Dana R. Fisher, James Connolly, Michelle Johnson, Nancy Falxa Sonti, Dexter H. Locke, Lynne M. Westphal, Cherie LeBlanc Fisher, Morgan Grove, Michele Romolini, Dale Blahna, Kathleen Wolf. 2016. Stewardship mapping and assessment project: a framework for understanding community-based environmental stewardship
• 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
• Susannah B. Lerman, Nancy Falxa Sonti. 2015. U.S. Forest Service and partners deliver urban wildlife research in support of conservation and management
• Erika Svendsen, Lindsay K. Campbell, Nancy Falxa Sonti, Gillian Baine. 2015. Urban stewardship as a catalyst for recovery and change
• 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
• Nancy Falxa Sonti, Matthew I. Palmer, Timon McPhearson, Kevin L. Griffin. 2014. Foliar nitrogen characteristics of four tree species planted in New York City forest restoration sites
• Dexter H. Locke, Kristen L. King, Erika Svendsen, Lindsay K. Campbell, Christopher Small, Nancy Falxa Sonti, Dana R. Fisher, Jacqueline W.T. Lu. 2014. Urban environmental stewardship and changes in vegetative cover and building footprint in New York City neighborhoods (2000-2010)
• Lindsay K. Campbell, Erika Svendsen, Nancy Falxa Sonti, Gillian Baine. 2014. Reading the landscape, a reflection on method
• Lindsay K. Campbell, Morgan Monaco, Nancy Falxa Sonti, Jacqueline Lu, Andrew Newman, Ruth A. Rae, Erika Svendsen. 2014. Million TreesNYC: the integration of research and practice
• Nancy Falxa Sonti. 2013. Book Review: Greening in the Red Zone
• Nancy Falxa Sonti, Erika Svendsen, Lindsay K. Campbell. 2013. From job training to green jobs: a case study for a young adult employment program centered on environmental restoration in New York City, USA
• Erika Svendsen, Lindsay K. Campbell, Nancy Falxa Sonti, Jessica Northridge, Edie Stone, Caroln Mees. 2012. Introducing a longitudinal study of community gardeners and gardens in New York City
• Jacqueline W.T. Lu, Erika Svendsen, Lindsay K. Campbell, Jennifer Greenfeld, Jessie Braden, Kristen King, Nancy Falxa Sonti. 2010. Biological, social, and urban design factors affecting young street tree mortality in New York City

Data and Tools

• Dataset
  

  Silvics of North America

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

  Urban Forest Patch Viewer

  https://research.fs.usda.gov/nrs/products/dataandtools/urban-forest-patch-viewer

• Center or Group
  

  Baltimore Urban Field Station

  https://research.fs.usda.gov/nrs/centers/baltimore
  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
  

  Selection in the City: Understanding Where City Trees Come From

  https://research.fs.usda.gov/nrs/projects/where-city-trees-come
  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
  

  Urban Silviculture Training Program (Baltimore)

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

  Northern Research Station
• Project
  

  Urban Forest Patches

  https://research.fs.usda.gov/nrs/projects/urban-forest-patches
  Station

  Northern Research Station
• Project
  

  The Stewardship Mapping Project (STEW-MAP): Baltimore, MD

  https://research.fs.usda.gov/projects/stewmapbaltimore
• Experimental Forest or Range
  

  Baltimore Cooperating Experimental Forest

  https://research.fs.usda.gov/nrs/forestsandranges/locations/baltimore
  Station

  Northern Research Station

Other Publications

• Procedures
  

  Additional sampling and estimation details for urban forest inventory and analysis reports (version 1)

  https://research.fs.usda.gov/nrs/understory/additional-sampling-and-estimation-details-urban-forest-inventory-and-analysis
• Report
  

  STEW-MAP in the Baltimore Region (2011 Survey Results)

  https://research.fs.usda.gov/understory/stew-map-baltimore-region-2011-survey-results
• Report
  

  STEW-MAP in the Baltimore Region (2019)

  https://research.fs.usda.gov/understory/stew-map-baltimore-region-2019

Multimedia

• Webinars
  

  Urban Forest Patch Viewer: Conserving Forests in Cities

  https://research.fs.usda.gov/nrs/products/multimedia/webinars/urban-forest-patch-viewer-conserving-forests-cities
• Webinars

  SCIENCEx Human Dimensions: Managing Urban Forests

  https://research.fs.usda.gov/products/multimedia/webinars/sciencex-human-dimensions-managing-urban-forests
• 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 Maryland - College Park, Ph.D., Plant Science, 2019
• Columbia University, M.A., Conservation Biology, 2011
• Stanford University, B.A., History and Biology, 2007