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.  



  • Canham, C. C., Parker, Geoffrey G. and Siccama, R. . (1992). Permanent plots - a directory of long-term studies of vegetation. Occasional Publication of the Institute of Ecosystem Studies .
  • Parker, Geoffrey G. (1990). Evaluation of dry deposition, pollutant damage, and forest health with throughfall studies. Mechanisms of Forest Response to Acidic Deposition (10-61) Springer-Verlag .
  • Parker, Geoffrey G., O'Neill, John P. and Higman, Daniel. (1989). Vertical Profile and Canopy Organization in a Mixed Deciduous Forest . Vegetatio, 85 (1) , 1-11.
  • Monk, C. D., Imm, D. W., Potter, R. L. and Parker, Geoffrey G. (1989). A classification of the deciduous forest of eastern North America. Vegetatio, 80 , 167-181.
  • Parker, Geoffrey G. (1989). Are currently available statistical methods adequate for long-term studies?. Long-Term Studies in Ecology (199-200) Springer-Verlag .
  • Parker, Geoffrey G. . (1987). Uptake and release of inorganic and organic ions by foliage: Evaluation of dry deposition, pollutant damage, and forest health with throughfall studies. .
  • Ulh, C. and Parker, Geoffrey G. (1986). Our steak in the jungle . Bioscience, 36 , 642.
  • Parker, Geoffrey G. . (1986). Analysis and recommendations concerning the natural forest management system used in the Central Selva project, Peru. Institute of Ecosystem Studies .
  • Ulh, C. and Parker, Geoffrey G. (1986). Is one-quarter pound hamburger worth a half-ton of rainforest?. Interciencia, 11 , 213-215.
  • Parker, Geoffrey G., Luvall, J. C. and Jordan, C. J. (1985). Hydrologic budgets for undisturbed and regenerating tropical rain-forests on hillslopes in northeastern Costa Rica. Proceedings of the International Symposium on Tropical Hydrology and 2nd Caribbean Islands Water Resources Congress American Water Resources Association .
  • Putz, F., Parker, Geoffrey G. and Archibald, R. (1984). Mechanical abrasion and intercrown spacing . American Midland Naturalist, 112 , 24-28.
  • Parker, Geoffrey G. (1983). Throughfall and stemflow in the forest nutrient cycle. Advances in Ecological Research, 13 , 57-133.
  • Parker, Geoffrey G. . (1981). Quality, variability and sources of summertime throughfall in two Virginia Piedmont forests. MS Thesis, University of Virginia .
  • Parker, Geoffrey G., Lindberg, S. and Kelly, J. M. (1980). Atmosphere-canopy interactions of sulfur in the Southeastern U.S. Atmospheric sulfur deposition, environmental impact and health efects Ann Arbor Science .
  • Galloway, J. N. and Parker, Geoffrey G. (1980). Difficulties in measuring wet and dry deposition on forest canopies and soil surfaces. Effects of acid precipitation on terrestrial ecosystems (57-68) Plenum Publishing .