• Network: AmeriFlux
  
• Principal investigator: David Ellsworth
  
• PI-affiliated institution: Brookhaven National Laboratory
  
• Primary IGBP ecosystem type: Evergreen Needleleaf Forests
  
• Dominant plant functional type: Evergreen Needleleaf trees
  
• Recent and historic disturbance and management events that may affect this site:
  • Fire: Wildfire or managed burns
  • Forestry: Forest management such as logging of any kind, plantation planting, or herbicide application.
• Flux data collection:
  • Start date: 1993-1996 (modeled) 1996
    
  • End date: 2007
    
• Flux methods:
  • Eddy Covariance
• Optical data collection:
  • Start date: May 2004
    
  • End date: 2007
    
• Data collection period: Continuous operation: Variable collected continuously with the reported method.
  
• Data scale: Stand
  
• Collection methods: Tower
  
• Types of data collected: PAR (Radiation and Energy Balance Systems, Q*7.1), PYR (Radiation and Energy Balance Systems, Q*7.1), Acoustic measurements (Sonic Anemometer, Campbell Scientific, CSAT3),
  
• Publications:
  • Hymus, Graham J., David S. Ellsworth, Neil R. Baker, and Stephen P. Long. "Does free-air carbon dioxide enrichment affect photochemical energy use by evergreen trees in different seasons? A chlorophyll fluorescence study of mature loblolly pine." Plant Physiology 120, no. 4 (1999): 1183-1192.
  • Luo, Yiqi, Belinda Medlyn, Dafeng Hui, David Ellsworth, James Reynolds, and Gabriel Katul. "Gross primary productivity in Duke Forest: modeling synthesis of CO2 experiment and eddy-flux data." Ecological Applications 11, no. 1 (2001): 239-252.
  • Hendrey, George R., David S. Ellsworth, Keith F. Lewin, and John Nagy. "A free-air enrichment system for exposing tall forest vegetation to elevated atmospheric CO2." Global Change Biology 5, no. 3 (1999): 293-309.
  • Dobson, M. Craig, Fawwaz T. Ulaby, T. LeToan, Andre Beaudoin, Eric S. Kasischke, and Norm Christensen. "Dependence of radar backscatter on coniferous forest biomass." Geoscience and Remote Sensing, IEEE Transactions on 30, no. 2 (1992): 412-415.

External homepage:  https://ameriflux.lbl.gov/sites/siteinfo/US-Dk3

Data download: https://facedata.ornl.gov/duke/duke_data_co2weather.html