John Butnor

Treesearch Publications

• Stephen R. Keller, Matthew C. Fitzpatrick, Susanne Lachmuth, Danika Mosher, Thibaut Capblancq, Kevin M. Potter, Elizabeth A. Byers, John Butnor. 2026. Climate Change Implications and Adaptation Solutions
• John Butnor. 2026. A simple prototype for assessing plant cold hardiness with differential thermal analysis
• Emmanuel Brefo, Rebecca McGee, John Butnor, Melike Bakır, Tucker Andrews, Heather Darby, Stephen Keller, Eric von Wettberg. 2025. Assessment of the agronomic potential of dual‐use winter‐hardy peas in Northern New England: Cold tolerance and production challenges for harvestable cover cropping peas
• John Butnor, Cornelia Wilson, Melike Bakır, Anthony W. D’Amato, Charles E. Flower, Christopher F. Hansen, Stephen R. Keller, Kathleen Knight, Paula Murakami. 2024. Cold Tolerance Assay Reveals Evidence of Climate Adaptation Among American Elm (Ulmus americana L.) Genotypes
• John Butnor, Paula Murakami, Laura DeWald. 2024. Spring Bud Phenology of Quercus alba Seedlings Planted in a Common Garden in Southern Vermont, USA
• Luyun Zhang, Zheng Zhang, Li Guo, Xihong Cui, John Butnor, Shupeng Li, Xin Cao, Xuehong Chen. 2024. A simple method for estimating the coarse lateral root biomass of shrubs using ground-penetrating radar: Validation by Caragana microphylla Lam. in Inner Mongolia
• Huijie Gu, Imre Cseresnyés, John Butnor, Baoru Li, Hongyong Sun, Xiying Zhang, Yang Lu, Xiuwei Liu. 2024. Advancing noninvasive and nondestructive root phenotyping techniques: A two-phase permittivity model for accurate estimation of root volume
• John Butnor, Bob Eaton, C. Dana Nelson. 2022. Growth Response of mature longleaf pine to drought and thinning at the Harrison Experimental Forest in south Mississippi
• Yong Zhou, Jenia Singh, John Butnor, Corli Coetsee, Peter B. Boucher, Madelon F. Case, Evan G. Hockridge, Andrew B. Davies, A. Carla. Staver. 2022. Limited increases in savanna carbon stocks over decades of fire suppression
• Anoob Prakash, Sonia DeYoung, Susanne Lachmuth, Jacquelyne Adams, Kurt Johnsen, John Butnor, David M. Nelson, Matthew C. Fitzpatrick, Stephen R. Keller. 2022. Genotypic variation and plasticity in climate-adaptive traits after range expansion and fragmentation of red spruce ( Picea rubens Sarg.)
• Xinbo Liu, Li Guo, Xihong Cui, John Butnor, Elizabeth W. Boyer, Dedi Yang, Jin Chen, Bihang Fan. 2022. An automatic processing framework for in situ determination of ecohydrological root water content by ground-penetrating radar
• Huijie Gu, Liantao Liu, John Butnor, Hongyong Sun, Xiying Zhang, Cundong Li, Xiuwei Liu. 2021. Electrical capacitance estimates crop root traits best under dry conditions—a case study in cotton (Gossypium hirsutum L.)
• Thibaut Capblancq, Helena Munson, John Butnor, Stephen R. Keller. 2021. Genomic drivers of early-life fitness in Picea rubens
• Thibaut Capblancq, John Butnor, Sonia Deyoung, Ethan Thibault, Helena Munson, David M. Nelson, Matthew C. Fitzpatrick, Stephen R. Keller. 2020. Whole‐exome sequencing reveals a long‐term decline in effective population size of red spruce ( Picea rubens )
• X. Liu, J. Chen, John Butnor, G. Qin, X. Cui, B. Fan, H. Lin, L. Guo. 2020. Noninvasive 2D and 3D Mapping of Root Zone Soil Moisture Through the Detection of Coarse Roots With Ground‐Penetrating Radar
• John Butnor, Kurt Johnsen, Christopher A. Maier, C. Dana Nelson. 2020. Intra-annual variation in soil C, N and nutrients pools after prescribed fire in a Mississippi longleaf pine (Pinus palustris Mill.) plantation
• John Butnor, Brittany Verrico, Kurt Johnsen, Christopher A. Maier, Victor Vankus, Stephen R. Keller. 2019. Phenotypic variation in climate-associated traits of red spruce (Picea rubens Sarg.) along elevation gradients in the southern Appalachian Mountains
• John Butnor, Kurt Johnsen, Peter Anderson, Kevin Hall, Joshua Halman, Gary Hawley, Christopher A. Maier, Paul Schaberg. 2019. Growth, Photosynthesis, and Cold Tolerance of Eucalyptus benthamii Planted in the Piedmont of North Carolina
• Peter Anderson, Kurt Johnsen, John Butnor, Carlos A. Gonzalez-Benecke, Lisa J. Samuelson. 2018. Predicting longleaf pine coarse root decomposition in the southeastern US
• John Butnor, Kurt Johnsen, Bob Eaton, Christopher A. Maier. 2018. Alternative collection methods for red spruce (Picea rubens) cones
• John Butnor, Brittany M. Verrico, Victor Vankus, Stephen R. Keller. 2018. Ethanol exposure can inhibit red spruce ( Picea rubens ) seed germination
• Xiuwei Liu, Xuejun Dong, Qingwu Xue, Daniel I. Leskovar, John Jifon, John Butnor, Thomas Marek. 2018. Ground penetrating radar (GPR) detects fine roots of agricultural crops in the field
• John Bain, Frank Day, John Butnor. 2017. Experimental evaluation of several key factors affecting root biomass estimation by 1500 MHz ground penetrating radar
• Paul Schaberg, Paula Murakami, John Butnor, Gary J. Hawley. 2017. Experimental branch cooling increases foliar sugar and anthocyanin concentrations in sugar maple at the end of the growing season
• John Butnor, Lisa J. Samuelson, Kurt Johnsen, Peter Anderson, Carlos A. Gonzalez Benecke, Claudia M. Boot, M. Francesca Cotrufo, Katherine A. A. Heckman, Jason Jackson, Thomas A. Stokes, Stanley J. Zarnoch. 2017. Vertical distribution and persistence of soil organic carbon in fire-adapted longleaf pine forests
• Brady Hardiman, Christopher Gough, John Butnor, Gil Bohrer, Matteo Detto, Peter Curtis. 2017. Coupling fine-scale root and canopy structure using ground-based remote sensing
• Lisa J. Samuelson, Thomas A. Stokes, John Butnor, Kurt Johnsen, Carlos A. Gonzalez-Benecke, Timothy A. Martin, Wendell P. Cropper, Pete H. Anderson, Michael R. Ramirez, John C. Lewis. 2017. Ecosystem carbon density and allocation across a chronosequence of longleaf pine forests
• John Butnor, Lisa J. Samuelson, Thomas A. Stokes, Kurt Johnsen, Peter Anderson, Carlos A. Gonzalez-Benecke. 2016. Surface-based GPR underestimates below-stump root biomass
• John Butnor, Kurt Johnsen, C. Dana Nelson. 2016. Changes in soil chemistry six months after prescribed fire in a longleaf pine plantation in Mississippi
• Christopher A. Maier, Peter Anderson, John Butnor, Phillip M. Dougherty, Kurt Johnsen, Daniel Mcinnis. 2016. Temporal and spatial patterns of soil CO2 efflux, soil carbon, and root biomass associated with bedding in young loblolly pine plantations
• C.A. Gonzalez-Benecke, L.J. Samuelson, T.A. Martin, W.P. Cropper Jr, Kurt Johnsen, T.A. Stokes, John Butnor, P.H. Anderson. 2015. Modeling the effects of forest management on in situ and ex situ longleaf pine forest carbon stocks
• Lisa Samuelson, Tom Stokes, John Butnor, Kurt Johnsen, Carlos A. Gonzalez-Benecke, Peter Anderson, Jason Jackson, Lorenzo Ferrari, Tim A. Martin, Wendell P. Cropper. 2014. Ecosystem carbon stocks in Pinus palustris forests
• Kurt Johnsen, Tara L. Keyser, John Butnor, Carlos A. Gonzalez-Beenecke, Donald J. Kaczmarek, Christopher A. Maier, Heather R. McCarthy, Ge Sun. 2014. Productivity and carbon sequestration of forests in the southern United States
• John Butnor, John Campbell, James B. Shanley, Stan Zarnoch. 2014. Measuring soil frost depth in forest ecosystems with ground penetrating radar
• Erin Berryman, John D. Marshall, Thom Rahn, Marcie Litvak, John Butnor. 2013. Decreased carbon limitation of litter respiration in a mortality-affected pinon-juniper woodland
• Frank Day, Rachel Schroeder, Daniel Stover, Alisha Brown, John Butnor, John Dilustro, Bruce Hungate, Paul Dijkstra, Benjamin Duval, Troy Seiler, Bert Drake, Ross Hinkle. 2013. The effects of 11 yr of CO₂ enrichment on roots in a Florida scrub-oak ecosystem
• Andrew C. Oishi, Sari Palmroth, John Butnor, Kurt Johnsen, Ram Oren. 2013. Spatial and temporal variability of soil CO₂ efflux in three proximate temperate forest ecosystems
• G. Brett Runion, John Butnor, S. A. Prior, R. J. Mitchell, H. H. Rogers. 2012. Effects of atmospheric CO₂ enrichment on soil CO₂ efflux in a young longleaf pine system
• John Butnor, Kurt Johnsen, Felipe Sanchez, C. Dana Nelson. 2012. Impacts of pine species, stump removal, cultivation, and fertilization on soil properties half a century after planting
• John Butnor, Kurt Johnsen, C. Dana Nelson. 2012. Exploring genetic diversity, physiologic expression and carbon dynamics in longleaf pine: a new study installation at the Harrison Experimental Forest
• John Butnor. 2012. Proceedings of the 16th biennial southern silvicultural research conference
• John Butnor. 2011. Book Review of Soil carbon dynamics: an integrated methodology
• Patricio R. Munoz Del Valle, Dudley A. Huber, John Butnor. 2011. Phenotypic analysis of first-year traits in a pseudo-backcross {(slash x loblolly) x slash} and the ope-pollinated families of the pure-species progenitors
• Lisa J. Samuelson, Thomas L. Eberhardt, John Butnor, Tom A. Stokes, Kurt Johnsen. 2010. Maximum growth potential in loblolly pine: results from a 47-year-old spacing study in Hawaii
• Kurt Johnsen, John Butnor, John S. Kush, Ron Schmidtling, C. Dana Nelson. 2009. Hurricane Katrina winds damaged longleaf pine less than loblolly pine
• John Butnor, M.L. Pruyn, D.C. Shaw, M.E. Harmon, A.N. Mucciardi, Michael G. Ryan. 2009. Detecting defects in conifers with ground penetrating radar: applications and challenges
• John Butnor. 2009. Soils, peatlands, and biomonitoring
• John Butnor, Kurt Johnsen, Lisa Samuelson, Michele Pruyn. 2009. Current applications of GPR in forest research
• Matt D. Busse, Felipe Sanchez, Alice Ratcliff, John Butnor, Emily Carter, Robert F. Powers. 2009. Soil carbon sequestration and changes in fungal and bacterial biomass following incorporation of forest residues
• Lisa J. Samuelson, John Butnor, Christopher A. Maier, Tom A. Stokes, Kurt Johnsen, Michael Kane. 2008. Growth and physiology of loblolly pine in response to long-term resource management: defining growth potential in the southern United States
• Daniel B. Stover, Frank P. Day, John Butnor, Bert G. Drake. 2007. Effect of elevated CO₂ on coarse-root biomass in Florida scrub detected by ground-penetrating radar
• Kurt Johnsen, Christopher A. Maier, Felipe Sanchez, Peter Anderson, John Butnor, Richard Waring, Sune Linder. 2007. Physiological girdling of pine trees via phloem chilling: proof of concept
• Sari Palmroth, Ram Oren, Heather R. McCarthy, Kurt Johnsen, Adrien C. Finzi, John Butnor, Michael G. Ryan, William H. Schlesinger. 2006. Aboveground sink strength in forests controls the allocation of carbon below ground and its [CO₂]-induced enhancement
• John Butnor, Kurt Johnsen, Per Wikstrom, Tomas Lundmark, Sune Linder. 2006. Imaging tree roots with borehole radar
• John Butnor, Kurt Johnsen, Felipe Sanchez. 2006. Whole-tree and forest floor removal from a loblolly pine plantation have no effect on forest floor CO₂ efflux 10 years after harvest
• John Butnor, Kurt Johnsen, Christopher A. Maier. 2005. Soil properties differently influence estimates of soil CO₂ efflux from three chamber-based measurement systems
• Siyan Ma, Jiquan Chen, John Butnor, Malcolm P. North, Eugénie S. Euskirchen, Brian Oakley. 2005. Biophysical controls on soil respiration in the dominant patch types of an old-growth, mixed-conifer forest
• John Butnor, Brian Roth, Kurt Johnsen. 2005. Feasibility of using ground-penetrating radar to quantify root mass in Florida's intensively managed pine plantations
• Kurt Johnsen, Bob Teskey, Lisa Samuelson, John Butnor, David Sampson, Felipe Sanchez, Christopher A. Maier, Steve McKeand. 2004. Carbon Sequestration in loblolly pine plantations: Methods, limitations, and research needs for estimating storage pools
• John Butnor, Kurt Johnsen. 2004. Calibrating soil respiration measures with a dynamic flux apparatus using artificial soil media of varying porosity
• John Butnor, J.A. Doolittle, Kurt Johnsen, L. Samuelson, T. Stokes, L. Kress. 2003. Utility of Ground-Penetrating Radar as a Root Biomass Survey Tool in Forest Systems
• John Butnor, Kurt Johnsen, Ram Oren, Gabriel G. Katul. 2003. Reduction of forest floor respiration by fertilization on both carbon dioxide-enriched and reference 17-year-old loblolly pine stands
• Christopher A. Maier, Kurt Johnsen, John Butnor, Lance W. Kress, Peter Anderson. 2002. Branch growth and gas exchange in 13-year-old loblolly pine (Pinus taeda) trees in response to elevated carbon dioxide concentration and fertilization
• Chun-Tai Lai, Gabriel Katul, John Butnor, David Ellsworth, Ram Oren. 2002. Modelling night-time ecosystem respiration by a constrained source optimization method
• Kurt Johnsen, David N. Wear, R. Oren, R.O. Teskey, Felipe Sanchez, R. Will, John Butnor, D. Markewitz, D. Richter, T. Rials, H.L. Allen, J. Seiler, D. Ellsworth, Christopher A. Maier, G. Katul, P.M. Dougherty. 2001. Meeting global policy commitments: carbon sequestration and southern pine forests
• John Butnor, J.A. Doolittle, L. Kress, Susan Cohen, Kurt Johnsen. 2001. Use of ground-penetrating radar to study tree roots in the southeastern United States
• Kurt Johnsen, David N. Wear, R. Oren, R.O. Teskey, Felipe Sanchez, Rodney E. Will, John Butnor, D. Markewitz, D. Richter, T. Rials, H.L. Allen, J. Seiler, D. Ellsworth, Christopher A. Maier, G. Katul, P.M. Dougherty. 2001. Meeting global policy commitments carbon sequestration and southern pine forests
• John Butnor, J.R. Seiler, J.A. Gray. 2000. Influence of Procerum Root Disease on the Water Relations of Eastern White Pine (Pinus strobus L.)

• Project
  

  Spruce and Peatland Responses Under Changing Environments (SPRUCE)

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

  Northern Research Station
• Center or Group
  

  Forest Genetics and Ecosystems Biology (SRS-4160)

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

  Southern Research Station
• Project
  

  Evaluating the Climate Adaptability of White Oak Trees on the Green Mountain National Forest

  https://research.fs.usda.gov/nrs/projects/climate-adaptability-white-oak
  Station

  Northern Research Station
• Program
  

  Northern Forest Science and Applications

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

  Northern Research Station