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Leaf Response
Growth Response
Pest Interactions
Soil Response
Ozone Modeling


Light-saturated assimilation of aspen, birch, and maple under experimental CO2 and O3 treatments. Karnosky et al. 2003. Functional Ecology. 17: 289-304

Light-saturated photosynthesis (means and SE) in an ozone-tolerant (216) and ozone sensitive (259) aspen clones by leaf plastochron index (LPI) (Noormets et al. 2001)

The Northern Forest Ecosystem Experiment (NFEE) is funded by the US Forest Service. The Aspen FACE Experiment is funded principally by the U.S. Department of Energy's Office of Biological and Environmental Research. Additional support is from the USFS Global Change Program, Michigan Technological University, the Canadian Forest Service and the USFS Northern Research Station.
For more information on this project, contact Dr. Andrew J. Burton (Michigan Technological University) at (906) 487-2566 or, or Dr. Mark E. Kubiske (Northern Research Station) at (715) 362-1108 or
For questions or suggestions regarding this website, please contact Janet Pikkarainen at
Last updated: July, 2010