Southern
Research Station

Education

Ph.D. in Forest Ecophysiology/Genetics, 1990

University of Georgia

M.S. in Forest Ecophysiology/Genetics, 1987

Virginia Tech

B.S. in Forestry, 1985

University of Vermont

Professional Experience

Plant Physiologist, , USDA-Forest Service-Southern Research Station (SRS)

1997—Current

Physiological Geneticist, Canadian Forest Service

1990—1997

Professional Organizations

• FAO North American Forest Commission Forest Genetic Resources Working Group, Member (2010—Current)

Awards and Recognition

Distinguished Scientist Award, 2007

USDA Forest Service, Southern Research Station, 2007 Director's award.

Featured Publications and Products

• Johnsen, Kurt H.; Keyser, Tara L.; Butnor, John R.; Gonzalez-Beenecke, Carlos A.; Kaczmarek, Donald J.; Maier, Chris A.; McCarthy, Heather R.; Sun, Ge. 2014. Productivity and carbon sequestration of forests in the southern United States.
• Major, John; Johnsen, Kurt; Barsi, Debra; Campbell, Moira; Malcolm, John. 2013. Stem biomass, C and N partitioning and growth efficiency of mature pedigreed black spruce on both a wet and a dry site.
• Johnsen, Kurt H.; Butnor, John R.; Kush, John S.; Schmidtling, Ronald C.; Nelson, C. Dana. 2009. Hurricane Katrina winds damaged longleaf pine less than loblolly pine.
• Nelson, C. Dana; Johnsen, Kurt H. 2008. Genomic and physiological approaches to advancing forest tree improvement.
• Johnsen, Kurt; Maier, Chris; Sanchez, Felipe; Anderson, Peter; Butnor, John; Waring, Richard; Linder, Sune. 2007. Physiological girdling of pine trees via phloem chilling: proof of concept.
• Johnsen, Kurt H.; Maier, Chris A.; Kress, Lance W. 2005. Quantifying root lateral distribution and turnover using pine trees with a distinct stable carbon isotope signature.
• Oren, Ram; Ellsworth, David S.; Johnsen, Kurt H.; Phillips, Nathan; Ewers, Brent E.; Maier, Chris; Schafer, Karina V.R.; McCarthy, Heather; Hendrey, George; McNulty, Steven G.; Katul, Gabriel G. 2001. Soil fertility limits carbon sequestration by forest ecosystems in a CO₂-enriched atmosphere.
• Johnsen, Kurt H.; Flanagan, Lawrence B.; Huber, Dudley A.; Major, John E. 1999. Genetic variation in growth, carbon isotope discrimination, and foliar N concentration in Picea mariana: analyses from a half-diallel mating design using field-grown trees.
• Ledig, F. Thomas; Vargas-Hernández, J. Jesús; Johnsen, Kurt H. 1998. The conservation of forest genetic resources: case histories from Canada, Mexico, and the United States.

Publications

• Prakash, Anoob ; DeYoung, Sonia ; Lachmuth, Susanne ; Adams, Jacquelyne L.; Johnsen, Kurt ; Butnor, John R.; Nelson, David M.; Fitzpatrick, Matthew C.; Keller, Stephen R. 2022. Genotypic variation and plasticity in climate-adaptive traits after range expansion and fragmentation of red spruce ( Picea rubens Sarg.).
• Kim, Dohyoung ; Medvigy, David ; Maier, Chris A.; Johnsen, Kurt ; Palmroth, Sari . 2020. Biomass increases attributed to both faster tree growth and altered allometric relationships under long‐term carbon dioxide enrichment at a temperate forest.
• Butnor, John R.; Johnsen, Kurt H.; Maier, Christopher A.; Nelson, C. Dana. 2020. Intra-annual variation in soil C, N and nutrients pools after prescribed fire in a Mississippi longleaf pine (Pinus palustris Mill.) plantation.
• Carbajal-Navarro, Aglaen ; Navarro-Miranda, Esmeralda ; Blanco-García, Arnulfo ; Cruzado-Vargas, Ana Laura; Gómez-Pineda, Erika ; Zamora-Sánchez, Cecilia ; Pineda-García, Fernando ; O'Neill, Greg ; Gómez-Romero, Mariela ; Lindig-Cisneros, Roberto ; Johnsen, Kurt H.; Lobit, Philippe ; Lopez-Toledo, Leonel ; Herrerías-Diego, Yvonne ; Sáenz-Romero, Cuauhtémoc . 2019. Ecological restoration of Abies religiosa forests using Nurse plants and assisted migration in the Monarch Butterfly Biosphere Reserve, Mexico.
• Butnor, John ; Johnsen, Kurt ; Anderson, Peter ; Hall, Kevin ; Halman, Joshua ; Hawley, Gary ; Maier, Christopher ; Schaberg, Paul G. 2019. Growth, Photosynthesis, and Cold Tolerance of Eucalyptus benthamii Planted in the Piedmont of North Carolina.
• Butnor, John ; Verrico, Brittany ; Johnsen, Kurt ; Maier, Christopher ; Vankus, Victor ; Keller, Stephen R. 2019. Phenotypic variation in climate-associated traits of red spruce (Picea rubens Sarg.) along elevation gradients in the southern Appalachian Mountains.
• Castillo, Ana ; Goldfarb, Barry ; Johnsen, Kurt ; Roberds, James ; Nelson, C. . 2018. Genetic variation in Water-Use Efficiency (WUE) and growth in mature longleaf pine.
• Anderson, Peter H.; Johnsen, Kurt H.; Butnor, John R.; Gonzalez-Benecke, Carlos A.; Samuelson, Lisa J. 2018. Predicting longleaf pine coarse root decomposition in the southeastern US.
• Samuelson, Lisa ; Johnsen, Kurt ; Stokes, Tom ; Anderson, Peter ; Nelson, C. Dana. 2018. Provenance variation in pinus palustris foliar δ13C.
• Maier, Chris A.; Albaugh, Timothy J.; Cook, Rachel I.; Hall, Kevin; McInnis, Daniel; Johnsen, Kurt H.; Johnson, John; Rubilar, Rafael A.; Vose, James M. 2017. Comparative water use in short-rotation Eucalyptus benthamii and Pinus taeda trees in the southern United States.
• Kim, Dohyoung; Oren, Ram; Clark, James S.; Palmroth, Sari; Oishi, A. Christopher; McCarthy, Heather R.; Maier, Chris A.; Johnsen, Kurt. 2017. Dynamics of soil CO ₂ efflux under varying atmospheric CO ₂ concentrations reveal dominance of slow processes.
• Samuelson, Lisa J.; Stokes, Thomas A.; Butnor, John R.; Johnsen, Kurt H.; Gonzalez-Benecke, Carlos A.; Martin, Timothy A.; Cropper, Wendell P.; Anderson, Pete H.; Ramirez, Michael R.; Lewis, John C. 2017. Ecosystem carbon density and allocation across a chronosequence of longleaf pine forests.
• Butnor, John R.; Samuelson, Lisa J.; Johnsen, Kurt H.; Anderson, Peter H.; Gonzalez Benecke, Carlos A.; Boot, Claudia M.; Cotrufo, M. Francesca; Heckman, Katherine A.; Jackson, Jason A.; Stokes, Thomas A.; Zarnoch, Stanley J. 2017. Vertical distribution and persistence of soil organic carbon in fire-adapted longleaf pine forests.
• Butnor, John R.; Johnsen, Kurt H.; Nelson, C. Dana. 2016. Changes in soil chemistry six months after prescribed fire in a longleaf pine plantation in Mississippi.
• Butnor, John R.; Samuelson, Lisa J.; Stokes, Thomas A.; Johnsen, Kurt H.; Anderson, Peter H.; Gonzalez-Benecke, Carlos A. 2016. Surface-based GPR underestimates below-stump root biomass.
• Maier, Christopher; Anderson, Peter; Butnor, John R.; Dougherty, Phillip M.; Johnsen, Kurt; Mcinnis, Daniel. 2016. Temporal and spatial patterns of soil CO2 efflux, soil carbon, and root biomass associated with bedding in young loblolly pine plantations.
• Johnsen, Kurt H.; Creighton, Jerre L.; Maier, Chris A. 2015. Longleaf pine grown in Virginia: a provenance test.
• Gonzalez-Benecke, C.A.; Samuelson, L.J.; Martin, T.A.; Cropper Jr, W.P.; Johnsen, Kurt; Stokes, T.A.; Butnor, John; Anderson, P.H. 2015. Modeling the effects of forest management on in situ and ex situ longleaf pine forest carbon stocks.
• Nelson, C. Dana; Boyd, Gwendolyn; Rousseau, Randall J.; Crane, Barbara S.; Echt, Craig S.; Johnsen, Kurt H. 2015. Participatory genetic improvement: longleaf pine.
• Samuelson, Lisa; Stokes, Tom; Butnor, John R.; Johnsen, Kurt H.; Gonzalez-Benecke, Carlos A.; Anderson, Pete; Jackson, Jason; Ferrari, Lorenzo; Martin, Tim A.; Cropper, Wendell P. 2014. Ecosystem carbon stocks in Pinus palustris forests.
• Scott, D. Andrew; Eaton, Robert J.; Foote, Julie A.; Vierra, Benjamin; Boutton, Thomas W.; Blank, Gary B.; Johnsen, Kurt. 2014. Soil ecosystem services in loblolly pine plantations 15 years after harvest, compaction, and vegetation control.
• Oishi, A. Christopher; Palmroth, Sari; Johnsen, Kurt H.; McCarthy, Heather R.; Oren, Ram. 2014. Sustained effects of atmospheric [CO2] and nitrogen availability on forest soil CO2 efflux.
• McNulty, Steven; Caldwell, Peter; Doyle, Thomas W.; Johnsen, Kurt; Liu, Yongqiang; Mohan, Jacqueline; Prestemon, Jeffrey; Sun, Ge. 2013. Forests and Climate Change in the Southeast USA.
• Major, John E.; Johnsen, Kurt H.; Barsi, Debby C.; Campbell, Moira. 2013. Needle parameter variation of mature black spruce families displaying a genetic x environment interaction in growth.
• Nelson, C. Dana; Peter, Gary F.; McKeand, Steven E.; Jokela, Eric J.; Rummer, Robert B.; Groom, Les; Johnsen, Kurt H. 2013. Pines.
• Johnsen, Kurt H.; Samuelson, Lisa J.; Sanchez, Felipe G.; Eaton, Bob. 2013. Soil carbon and nitrogen content and stabilization in mid-rotation, intensively managed sweetgum and loblolly stands.
• Oishi, A. Christopher; Palmroth, Sari; Butnor, John; Johnsen, Kurt; Oren, Ram. 2013. Spatial and temporal variability of soil CO₂ efflux in three proximate temperate forest ecosystems.
• Samuelson, Lisa ; Stokes, Tom; Johnsen, Kurt. 2012. Ecophysiological comparison of 50-year-old longleaf pine, slash pine and loblolly pine.
• Maier, Chris A.; Johnsen, Kurt H.; Dougherty, Phillip; McInnis, Daniel; Anderson, Pete; Patterson, Steve. 2012. Effect of Harvest Residue Management on Tree Productivity and Carbon Pools during Early Stand Development in a Loblolly Pine Plantation.
• Butnor, John R.; Johnsen, Kurt H.; Nelson, C. Dana. 2012. Exploring genetic diversity, physiologic expression and carbon dynamics in longleaf pine: a new study installation at the Harrison Experimental Forest.
• Major, John E.; Johnsen, Kurt H.; Barsi, Debby C.; Campbell, Moira. 2012. Fine and coarse root parameters from mature black spruce displaying genetic x soil moisture interaction in growth.
• Butnor, John R.; Johnsen, Kurt H.; Sanchez, Felipe G; Nelson, C. Dana. 2012. Impacts of pine species, stump removal, cultivation, and fertilization on soil properties half a century after planting.
• Major, John E.; Johnsen, Kurt H.; Barsi, Debby C.; Campbell, Moira. 2012. Total below-ground carbon and nitrogen partitioning of mature black spruce displaying genetic x soil moisture interaction in growth.
• Drake, J.E.; Oishi, A.C.; Giasson, M. A.; Oren, R.; Johnsen, Kurt; Finzi, A.C. 2012. Trenching reduces soil heterotrophic activity in a loblolly pine (Pinus taeda) forest exposed to elevated atmospheric [CO2] and N fertilization.
• Drake, John E; Gallet-Budynek, Anne; Hofmockel, Kirsten S; Bernhardt, Emily S; Billings, Sharon A; Jackson, Robert B; Johnsen, Kurt S; et., al. 2011. Increases in the flux of carbon belowground stimulate nitrogen uptake and sustain the long-term enhancement of forest productivity under elevated CO2.
• Samuelson, Lisa J.; Eberhardt, Thomas L.; Butnor, John R.; Stokes, Tom A.; Johnsen, Kurt H. 2010. Maximum growth potential in loblolly pine: results from a 47-year-old spacing study in Hawaii.
• Maier, Chris A.; Johnsen, Kurt H. 2010. Quantifying carbon sequestration in forest plantations by modeling the dynamics of above and below ground carbon pools.
• McCarthy, Heather R.; Oren, Ram; Johnsen, Kurt H; Gallet-Budynek, Anne; Pritchard, Seth G.; Cook, Charles W; LaDeau, Shannon L.; Jackson, Robert B.; Finzi, Adrien C. 2010. Re-assessment of plant carbon dynamics at the Duke free-air CO₂ enrichment site: interactions of atmospheric [CO₂] with nitrogen and water availability over stand development.
• Weilopolski, Lucian; Johnsen, Kurt; Zhang, Yuen. 2010. Soil analysis based on sa,ples withdrawn from different volumes: correlation versus calibration.
• Pritchard, Seth G.; Maier, Chris A.; Johnsen, Kurt H.; Grabman, Andrea J.; Chalmers, Anne P. 2010. Soil incorporation of logging residue affects fine-root and mycorrhizal root-tip dynamics of young loblolly pine clones.
• Tyree, Michael; Seiler, John; Maier, Chris; Johnsen, Kurt. 2009. Pinus taeda clones and soil nutrient availability: effects of soil organic matter incorporation and fertilization on biomass partitioning and leaf physiology.
• Butnor, John; Johnsen, Kurt; Samuelson, Lisa; Pruyn, Michele. 2009. Current applications of GPR in forest research.
• Anderson, Peter H; Johnsen, Kurt H. 2009. Fertilizer responses of longleaf pine trees within a loblolly pine plantation: separating direct effects from competition effects.
• Maier, Chris A.; Johnsen, Kurt H.; Clinton, Barton D.; Ludovici, Kim H. 2009. Relationships between stem CO2 efflux, substrate supply, and growth in young loblolly pine trees.
• Samuelson, Lisa J.; Butnor, John; Maier, Chris; Stokes, Tom A.; Johnsen, Kurt; Kane, Michael. 2008. Growth and physiology of loblolly pine in response to long-term resource management: defining growth potential in the southern United States.
• Wielopolski, Lucian; Hendrey, George; Johnsen, Kurt H.; Mitra, Sudeep; Prior, Stephen A.; Rogers, Huga H.; Torbert, H. Allen. 2008. Nondestructive system for analyzing carbon in the soil.
• McCarthy, Heather R.; Oren, Ram; Finzi, Adrien C.; Ellsworth, David S.; Kim, Hyun-Seok; Johnsen, Kurt H.; Millar, Bonnie. 2007. Temporal dynamics and spatial variability in the enhancement of canopy leaf area under elevated atmospheric CO₂.
• Palmroth, Sari; Oren, Ram; McCarthy, Heather R.; Johnsen, Kurt H.; Finzi, Adrien C.; Butnor, John R.; Ryan, Michael G.; Schlesinger, William H. 2006. Aboveground sink strength in forests controls the allocation of carbon below ground and its [CO₂]-induced enhancement.
• McCarthy, Heather R.; Oren, Ram; Finzi, Adrien C.; Johnsen, Kurt H. 2006. Canopy leaf area constrains [CO₂]-induced enhancement of productivity and partitioning among aboveground carbon pools.
• Butnor, John R.; Johnsen, Kurt H.; Wikstrom, Per; Lundmark, Tomas; Linder, Sune. 2006. Imaging tree roots with borehole radar.
• McCarthy, Heather R.; Oren, Ram; Kim, Hyun-Seok; Johnsen, Kurt H.; Maier, Chris; Pritchard, Seth G.; Davis, Michael A. 2006. Interaction of ice storms and management practices on current carbon sequestration in forests with potential mitigation under future CO₂ atmosphere.
• King, Nathan; Seiler, John; Fox, Thomas R.; Johnsen, Kurt. 2006. The short-term effects of fertilization on loblolly pine photosynthesis and biomass.
• Butnor, John R.; Johnsen, Kurt H.; Sanchez, Felipe G. 2006. Whole-tree and forest floor removal from a loblolly pine plantation have no effect on forest floor CO₂ efflux 10 years after harvest.
• Palmroth, S.; Maier, Chris A.; McCarthy, Heather R.; Oishi, A. C.; Kim, H. S.; Johnsen, Kurt H.; Katul, Gabrial G.; Oren, Ram. 2005. Contrasting responses to drought of forest floor CO₂ efflux in a loblolly pine plantation and a nearby Oak-Hickory forest.
• Butnor, John; Roth, Brian; Johnsen, Kurt. 2005. Feasibility of using ground-penetrating radar to quantify root mass in Florida's intensively managed pine plantations.
• Major, John E.; Mosseler, Alex; Johnsen, Kurt H.; Rajora, Om P.; Barsi, Debby C.; Kim, K.-H.; Park, J.-M.; Campbell, Moira. 2005. Reproductive barriers and hybridity in two spruces, Picea rubens and Picea mariana, sympatric in eastern North America.
• Butnor, John R.; Johnsen, Kurt H.; Maier, Chris A. 2005. Soil properties differently influence estimates of soil CO₂ efflux from three chamber-based measurement systems.
• Edwards, Ivan; Gillespie, Andrew; Chen, Jennifer; Johnsen, Kurt; Turco, Ronald. 2005. Spatial distribution of ammonium and calcium in optimally fertilized pine plantation soils.
• Butnor, John R.; Johnsen, Kurt H. 2004. Calibrating soil respiration measures with a dynamic flux apparatus using artificial soil media of varying porosity.
• Johnsen, Kurt; Teskey, Bob; Samuelson, Lisa; Butnor, John; Sampson, David; Sanchez, Felipe; Maier, Chris; McKeand, Steve. 2004. Carbon Sequestration in loblolly pine plantations: Methods, limitations, and research needs for estimating storage pools.
• Samuelson, Lisa J.; Johnsen, Kurt; Stokes, Tom; Lu, Weinlang. 2004. Intensive management modifies soil CO₂ efflux in 6-year-old Pinus taeda L. stands.
• Albaugh, Timothy J.; Allen, H. Lee; Dougherty, Phillip M.; Johnsen, Kurt H. 2004. Long term growth responses of loblolly pine to optimal nutrient and water resource availability.
• Edwards, Ivan P.; Cripliver, Jennifer L.; Gillespie, Andrew R.; Johnsen, Kurt H.; Scholler, M.; Turco, Ronald F. 2004. Nitrogen availability alters macrofungal basidiomycete Blackwell Publishing, Ltd. community structure in optimally fertilized loblolly pine forests.
• Johnsen, Kurt. 2004. Overview of global climate change and carbon sequestration.
• Coleman, Mark D.; Coyle, David R.; Blake, J.; Britton, Kerry O.; Buford, M.; Campbell, R.G.; Cox, J.; Cregg, B.; Daniels, D.; Jacobson, M.; Johnsen, Kurt; McDonald, Timothy; McLeod, K.; Nelson, E.; Robison, D.; Rummer, R.; Sanchez, F.; Stanturf, John A.; Stokes, B.; Trettin, Carl; Tuskan, J.; Wright, L.; Wullschleger, S. 2004. Production of Short-Rotation Woody Crops Grown with a Range of Nutrient and Water Availability: Establishment Report and First-Year Responses.
• Samuelson, Lisa J.; Johnsen, Kurt; Stokes, Tom. 2004. Production, allocation, and stemwood growth efficiency of Pinus taeda L. stands in response to 6 years of intensive management.
• Gough, Christopher M.; Seiler, John R.; Johnsen, Kurt H.; Sampson, David Arthur. 2004. Seasonal Photosynthesis in Fertilized and Nonfertilized Loblolly Pine.
• Rauscher, H. Michael; Johnsen, Kurt, eds. 2004. Southern forest science: past, present, and future.
• Sampson, D.A.; Albaugh, T.J.; Johnsen, Kurt H.; Allen, H.L.; Zarnoch, Stanley J. 2003. Monthly leaf area index estimates from point-in-time measurements and needle phenology for Pinus taeda.
• Butnor, John R.; Johnsen, Kurt H.; Oren, Ram; Katul, Gabriel G. 2003. Reduction of forest floor respiration by fertilization on both carbon dioxide-enriched and reference 17-year-old loblolly pine stands.
• Johnsen, Kurt; Major, John E.; Maier, Chris A. 2003. Selfing results in inbreeding depression of growth but not of gas exchange of surviving adult black spruce trees.
• Butnor, John R.; Doolittle, J.A.; Johnsen, Kurt H.; Samuelson, L.; Stokes, T.; Kress, L. 2003. Utility of Ground-Penetrating Radar as a Root Biomass Survey Tool in Forest Systems.
• Maier, Chris A.; Johnsen, Kurt H.; Butnor, John; Kress, Lance W.; Anderson, Peter H. 2002. Branch growth and gas exchange in 13-year-old loblolly pine (Pinus taeda) trees in response to elevated carbon dioxide concentration and fertilization.
• Gough, Christopher; Seiler, John; Johnsen, Kurt; Sampson, David Arthur. 2002. GPP in Loblolly Pine: A Monthly Comparison of Empirical and Process Models.
• Lai, Chun-Tai; Katul, G.; Butnor, J.; Siqueira, M.; Ellsworth, D.; Maier, C.; Johnsen, Kurt; Mickeand, S.; Oren, R. 2002. Modelling the limits on the response of net carbon exchange to fertilization in a south-eastern pine forest.
• Allen, H.L.; Albaugh, T. J.; Johnsen, Kurt H. 2002. Water and Nutrient Effects on Loblolly Pine Production and Stand Development on a Sandhill Site.
• Landsberg, Joe J.; Johnsen, Kurt H.; Albaugh, Timothy J.; Allen, H. Lee; McKeand, Steven E. 2001. Applying 3-PG, a simple process-based model designed to produce practical results, to data from loblolly pine experiments.
• Ewers, Brent E.; Oren, Ram; Johnsen, Kurt H.; Landsberg, J.J. 2001. Estimating maximum mean canopy stomatal conductance for use in models.
• Martin, Timothy A.; Johnsen, Kurt H.; White, Timothy L. 2001. Ideotype Development in Southern Pines: Rationale and Strategies for Overcoming Scale-Related Obstacles.
• Johnsen, Kurt H.; Wear, David N.; Oren, R.; Teskey, R.O.; Sanchez, Felipe; Will, Rodney E.; Butnor, John; Markewitz, D.; Richter, D.; Rials, T.; Allen, H.L.; Seiler, J.; Ellsworth, D.; Maier, Christopher; Katul, G.; Dougherty, P.M. 2001. Meeting global policy commitments carbon sequestration and southern pine forests.
• Johnsen, Kurt H.; Wear, Dave; Oren, R.; Teskey, R.O.; Sanchez, Felipe; Will, R.; Butnor, John; Markewitz, D.; Richter, D.; Rials, T.; Allen, H.L.; Seiler, J.; Ellsworth, D.; Maier, Christopher; Katul, G.; Dougherty, P.M. 2001. Meeting global policy commitments: carbon sequestration and southern pine forests.
• Johnsen, Kurt; Samuelson, Lisa; Teskey, Robert; McNulty, Steve; Fox, Tom. 2001. Process models as tools in forestry research and management.
• Major, John E.; Johnsen, Kurt H. 2001. Shoot water relations of mature black spruce families displaying a genotype × environment interaction in growth rate. III. Diurnal patterns as influenced by vapor pressure deficit and internal water status.
• Sampson, David A.; Johnsen, Kurt H.; Ludovici, Kim H.; Albaugh, Timothy J.; Maier, Chris A. 2001. Stand-scale correspondence in empirical and simulated labile carbohydrates in loblolly pine.
• Butnor, John R.; Doolittle, J.A.; Kress, L.; Cohen, Susan; Johnsen, Kurt H. 2001. Use of ground-penetrating radar to study tree roots in the southeastern United States.
• Barnett, Jim; Busby, Rod; Bridgwater, Floyd; English, Don; Hanula, Jim; Herbert, Nancy; Johnsen, Kurt; Kard, Brad; Klepzig, Kier; McMahon, Charlie; Prestemon, Jeff; Rials, Tim; Rummer, Bob; Shelton, Mike; Thill, Ron; Waldrop, Tom; Walker, Joan; Walters, Nancy. 2000. Sustainability and productivity of southern pine ecosystems.
• Groninger, John W.; Johnsen, Kurt H.; Seiler, John. R.; Will, Rodney E.; Ellsworth, David S.; Maier, Chris A. 1999. Elevated Carbon Dioxide in the Atmosphere: What Might It Mean for Loblolly Pine Plantation Forestry.
• Wang, Z.M.; Johnsen, K.H.; Lechowicz, M.J. 1999. Is Climate Simulation in Growth Chambers Necessary?.
• Johnsen, Kurt H.; Major, John E. 1999. Shoot water relations of mature black spruce families displaying a genotype x environment interaction in growth rate. I. Family and site effects over three growing seasons.
• Major, John E.; Johnsen, Kurt H. 1999. Shoot water relations of mature black spruce families displaying a genotype x environment interaction in growth rate. II. Temporal trends and response to varying soil water conditions.
• Johnsen, Kurt H.; Major, John E. 1998. Black spruce family growth performance under ambient and elevated atmospheric CO₂.
• Johnsen, Kurt H.; Major, John E.; Loo, Judy; McPhee, Donald. 1998. Negative heterosis not apparent in 22-year-old hybrids of Picea mariana and Picea rubens.
• Major, John E.; Johnsen, Kurt H. 1996. Family variation in photosynthesis of 22-year-old black spruce: a test of two models of physiological response to water stress.
• Johnsen, Kurt H.; Seiler, John R. 1996. Growth, shoot phenology and physiology of diverse seed sources of black spruce: I Seedling responses to varied atmospheric CO₂ concentrations and photoperiods.
• Johnsen, Kurt H.; Seiler, John R.; Major, John E. 1996. Growth, shoot phenology and physiology of diverse seed sources of black spruce: II 23-year-old field trees.
• Flanagan, Lawrence B.; Johnsen, Kurt H. 1995. Genetic variation in carbon isotope discrimination and its relationship to growth under field conditions in full-sib families of Picea mariana.

Research Highlights

Quantifying and Managing Carbon Sequestration in Longleaf Pine Ccosystems. (2014)

Forests can offset greenhouse gas emissions by sequestering carbon dioxide in tree biomass, understory vegetation, forest floor litter, detritus, soils and wood products. In partnership with Auburn University and the University of Florida, Forest Service scientists are assessing soil carbon pools and above and below-ground productivity in longleaf pine stands to create modeling tools for carbon management.

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