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.  



  • 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., 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 .
  • 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. (1997). Canopy structure and light environment of an old-growth Douglas-fir/Western Hemlock forest. Northwest Science, 71 (4) , 261-270.
  • 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.
  • 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.
  • Armesto, J. J., Aravena, J. C., Villagran, C., Perez, C. and Parker, Geoffrey G. (1995). Bosques templados de la cordillera de la costa. Ecologia de los Bosques Nativos de Chile (199-213) Universidad de Chile .
  • Lowman, M., Halle, F., Bouricius, B., Coley, Phyllis D., Nadkarni, N., Parker, Geoffrey G., Saterson, K. and Wright, S. Joseph. (1995). What's up? Perspectives from the First International Forest Canopy Conference at Sarasota, Florida, 1994. Selbyana, 16 , 1-11.
  • Parker, Geoffrey G. (1995). Structure and microclimate of forest canopies. Forest Canopies - A Review of Research on a Biological Frontier (73-106) Academic Press, Inc .
  • Parker, Geoffrey G. (1995). Tree. 1996 McGraw Hill Yearbook of Science and Technology (352-354) McGraw-Hill, Inc .
  • Brown, Martin J. and Parker, Geoffrey G. (1994). Canopy light transmittance in a chronosequence of mixed-species deciduous forests. Canadian Journal of Forest Research, 24 , 1694-1703.
  • Brown, Martin J., Parker, Geoffrey G. and Posner, Nathaniel E. (1994). A survey of ultraviolet-B radiation in forests . Journal of Ecology, 82 , 843-854.
  • Nadkarni, Nalini M. and Parker, Geoffrey G. (1994). A profile of forest canopy science and scientists -- who we are, what we want to know, and obstacles we face: Results of an international survey. Selbyana, 15 (2) , 38-50.
  • Nadkarni, Nalini M. and Parker, Geoffrey G. (1994). Creation of the Canopy Research Network. Ecological Engineering, 3 , 203.