Staff Profile
Photo for Geoffrey Parker


McGill University (B Sc. In Biology)
University of Virginia (MS. In Environmental Sciences)
University of Georgia (Ph. D. in Ecology)
Cary Institute of Ecosystem Studies (postdoctoral fellow)

Geoffrey (‘Jess’) Parker has been the forest ecologist at the Smithsonian Environmental Research Center (SERC) in Edgewater, Md., since 1987.   His research interests concern the structure and function of forest ecosystems at long temporal and large spatial scales, in the canopies of forests, the spatial relationships of forest trees, and in comparative forest ecology.   An organizing theme of the majority of studies has been the interaction between the structure of the forest canopy and:  1.) exchanges of material and energy with the atmospheric boundary layer, 2.) forest microclimates, and 3.) biotic habitats.  He is currently involved in a variety of LIDAR-based studies of forest structure, eddy covariance-based measures of forest functions, and biometrically-based studies of forest carbon budgets.  



  • Shaw, D. C., Meinzer, Frederick C., Bible, K. and Parker, Geoffrey G. (2003). Wind River Canopy Crane Research Facility, USA. Studying forest canopies from above: the International Canopy Crane Network (98-107) Smithsonian Tropical Research Institute and United Nations Environment Programme .
  • Lefsky, M. A., Cohen, W. B., Parker, Geoffrey G. and Harding, D. J. (2002). Lidar remote sensing for ecosystem studies . Bioscience, 52 , 19-30.
  • Parker, Geoffrey G., Chapotin, S. M. and Davis, M. (2002). Canopy light transmittance in an age sequence of Douglas-fir/western hemlock stands. Tree Physiology, 22 , 147-157.
  • Lefsky, M. A., Cohen, W. B., Harding, D. J., Parker, Geoffrey G., Acker, S. A. and Gower, S. T. (2002). Lidar remote sensing of aboveground biomass in three biomes . Global Ecology and Biogeography, 11 , 393-400.
  • Harding, D., Lefsky, M. A., Parker, Geoffrey G. and Blair, B. (2001). Laser altimetry canopy height profiles: methods and validation for closed-canopy, broadleaved forests. Remote Sensing of Environment, 76 , 283-297.
  • Parker, Geoffrey G., Lefsky, M. A. and Harding, D. J. (2001). PAR transmittance in forest canopies determined using airborne laser altimetry and in-canopy quantum measurements . Remote Sensing of Environment, 76 , 298-309.
  • Parker, Geoffrey G. and Brown, Martin J. (2000). Forest canopy stratification - is it useful? . American Naturalist, 155 (4) , 473-484.
  • Lefsky, M. A., Cohen, W. B., Acker, S. A., Parker, Geoffrey G., Spies, T. A. and Harding, D. (1999). Lidar remote sensing of the canopy structure and biophysical properties of douglas-fir western hemlock forests - concepts and management . Remote Sensing of Environment, 70 (3) , 339-361.
  • Lefsky, M. A., Harding, D., Cohen, W. B., Parker, Geoffrey G. and Shugart, H. H. (1999). Surface lidar remote sensing of basal area and biomass in deciduous forests of eastern Maryland, USA . Remote Sensing of Environment, 67 , 83-98.
  • Lefsky, M. A., Cohen, W. B., Acker, S. A., Parker, Geoffrey G. and Spies, T. A. (1999). Lidar remote sensing of biophysical properties of canopy structure of forests of Douglas-fir and western hemlock. Remote Sensing of Environment, 70 , 339-361.
  • Lefsky, M. A., Cohen, W. B., Acker, S. A., Spies, T. A., Parker, Geoffrey G. and Harding, D. (1998). Lidar remote sensing of forest canopy structure and related biophysical parameters at H. J. Andrews Experimental Forest, Oregon, USA. Natural resources management using remote sensing and GIS (79-91) ASPRS .
  • Parker, Geoffrey G. (1997). Canopy structure and light environment of an old-growth Douglas-fir/Western Hemlock forest. Northwest Science, 71 (4) , 261-270.
  • McCune, B., Amsberry, K. A., Camacho, F. J., Clery, S., Cole, C., Emerson, C., Felder, G., French, P., Greene, D., Harris, R., Hutten, M., Larson, B., Lesko, M., Majors, S., Markwell, T., Parker, Geoffrey G., Pendergrass, K., Peterson, E. B., Peterson, E. T., Platt, J., Proctor, J., Rambo, T., Rosso, A., Shaw, D., Turner, R., et al. (1997). Vertical profile of epiphytes in a Pacific Northwest old-growth forest. Northwest Science, 71 (12) , 145-152.
  • Parker, Geoffrey G., Stone, Peter J. and Bowers, David. (1996). A balloon for microclimate observations within the forest canopy . Journal of Applied Ecology, 33 , 173-177.
  • Nadkarni, Nalini M., Parker, Geoffrey G., Ford, E. David, Cushing, Judy B. and Stallman, Cara. (1996). International Canopy Network: A pathway for interdisciplinary exchange of scientific information on forest canopies. Northwest Science, 70 , 104-108.