Staff Profiles

Name: Janet Gamble

Organizational Affiliation:National Center for Environmental Assessment/Global Change Research Program

Research Interests:
Statistical analysis of changes in nutrient flows in U.S. rivers related to changes in temperature and precipitation. Analysis of health effects of weather extremes, including heat/cold morbidity effects in children and effects of inclement weather on accidents and injuries.

Name: Dr. James A. Goodrich

Organizational Affiliation:National Risk Management Research Laboratory/Water Supply and Water Resources Division

Research Interests:
Drinking water and wastewater treatment system adaptation to global climate change.

Publications:
Two publications undergoing peer review currently. Related publications on source water protection:
"Evaluating the effects of upstream dischargers on downstream water supplies: a source water protection model," R.M. Clark, J.A. Goodrich, B.W. Lykins, Jr., and J.R. Neal, AQUA, Vol. 47, No. 5, pp. 215-222, 1998. Hardcopy available only.

Source Water Assessment Using Geographic Information Systems, Final Report, Lucille Garner, Project Officer, 49 pages, 5 appendices, 1999. CD available.

Name: Anne Grambsch

Organizational Affiliation:National Center for Environmental Assessment/Global Change Research Program

Research Interests:
Senior Economist and international expert on the potential effects of climate change and climate variability on human health. Contributing Author to the 1997 Intergovernmental Panel on Climate Change (IPCC) assessment report, "The Regional Impacts of Climate Change." Lead Author for the USGCRP's National Assessment Health Sector Report. Managed the Office of Policy's Climate Change Health Initiative, and wrote extensively on health effects, adaptation strategies, and co-control benefits of climate policies. Conducted research on implementing environmental accounting systems and a comprehensive benefit-cost assessment of the Clean Air Act, from 1970 to 1990. Prior to joining EPA in 1989, worked at the U.S. Fish and Wildlife Service on the National Survey of Fishing, Hunting and Wildlife-Associated recreation.

Name: Lara Hansen

Organizational Affiliation:National Health and Environmental Effects Research Laboratory

Research Interests and Skills:
Photobiology (marine and freshwater systems)
Integration of conservation and toxicology
National Association of Underwater Instructors Open Water 1 SCUBA certified
USEPA Research/Working Diver certified
Sierra-Sacramento Valley EMS Agency EMT 1 certified

Publications:
Hansen, Lara. 1999. Environmental photobiology (Abstract). Presented at NHEERL Post-Doc Symposium, 2-3 November 1999, Research Triangle Park, NC. 1 p. (ERL,GB R695).

Name: Daniel Heggem

Organizational Affiliation:National Exposure Research Laboratory/Environmental Sciences Division

Research Interests:
Changes in landscape patterns on watersheds due to human activities and the effect on the sustainability of aquatic resources and disturbance regimes (e.g., flooding) that can potentially cause significant property damage and endanger human lives. Work includes: developing historical landscape indicator databases to assess the spatial distribution of landscape change in the mid-Atlantic Region of the United States (MAIA) from the early 1970's to the early1990's; evaluating the consequences of 20 years of change in MAIA on ecological and hydrologic processes that sustain aquatic resources; evaluating the impact of future climate scenarios on aquatic resources given the spatial pattern of landscape change between the early 1970's and the early 1990's.

Recent Publications:
Heggem, D.T., A.C. Neale, C.M. Edmonds, L. Bice, and K. Bruce Jones, 1999. "An Ecological Assessment of the Louisiana Tensas River Basin". EPA 600/R-99/016. U.S. Environmental Protection Agency, Office of Research and Development, Washington DC. Available in hard copy only;
Executive Summary is available at http://www.gmpo.gov/tensas.html.

Heggem, D.T., Edmonds, C.M., Neale, A.C., Bice, L., and Jones, K.B. "Forested Wetland Restoration: Identifying Potential Sites in Northeast Louisiana". Geo Info Systems, May 1999. Available in hard copy only.

Heggem, D.T., Edmonds, C.M., Neale, A.C., Bice, L., Jones, K.B. "Landscape Ecology Analysis of Potential Forested Wetland Restoration Sites, Tensas River Basin, Mississippi River Delta Region, Gulf of Mexico". Presented at the National Symposium on Ecosystem Restoration, Baltimore, MD, May 1998. Available in hard copy only.

Name: Robert V. Hendriks

Organizational Affiliation:National Risk Management Research Laboratory/Air Pollution Prevention & Control Division

Research Interests:
Assessment of greenhouse gas mitigation and adaptation strategies; development of climate change adaptation strategies; utilization of biomass as an energy source.

Name:Mark G. Johnson

Organizational Affiliation:National Health and Environmental Effects Research Laboratory

Research Interests:
Effects of natural and anthropogenic stresses on roots, soil and soil processes.
Biogeochemistry of forested systems. Carbon accumulation and sequestration in soils.

Recent Publications:
Johnson, M.G., D.L. Phillips, D.T. Tingey and M.J. Storm. 2000. Effects of Elevated CO2 and N-Fertilization on survival of ponderosa pine fine roots. Canadian Journal of Forest Research. [in press]

Lin, G., J.R. Ehleringer, P.T. Rygiewicz, M.G. Johnson and D.T. Tingey. 1999. Elevated CO2 and temperature impacts on different components of soil CO2 efflux in Douglas-fir terracosms. Global Change Biology 5:157-168.

Johnson, M.G., D.T. Tingey, M.J. Storm, L.M. Ganio and D.L. Phillips. 1997. Effects of elevated CO2 and N fertilization on the lifespan of Pinus ponderosa fine roots. In H.E. Flores, J.P. Lynch and D. Eissenstat (Eds.) Radicle Biology:Advances and Perspectives on the Function of Plant Roots, pp 370-373. Vol. 18 Current Topics in Plant Physiology series. American Society of Plant Physiologists.

Rygiewicz, P.T., M.G. Johnson, L.M. Ganio, D.T. Tingey, and M.J. Storm. 1997. Lifetime and temporal occurrence of ectomycorrhizae on ponderosa pine (Pinus ponderosa Laws.) seedlings grown under varied atmospheric CO2 and nitrogen levels. Plant and Soil 189:275-287.

Tingey, D.T., D.L. Phillips, M.G. Johnson, M.J. Storm, and J.T. Ball. 1997. Effects of elevated CO2 and N-fertilization on fine root dynamics and fungal growth in seedling Pinus ponderosa. Environmental and Experimental Botany 37:73-83.

Tingey, D.T., M.G. Johnson, D.L. Phillips, D.W. Johnson, and J.T. Ball. 1996. Effects of elevated CO2 and nitrogen on the synchrony of shoot and root growth in ponderosa pine. Tree Physiology 16:905-914.

Tingey, D.T., M.G. Johnson, D.L. Phillips, and M.J. Storm. 1996. Effects of elevated CO2 and nitrogen on ponderosa pine fine roots and associated fungal components. Journal of Biogeography. 22:281-287.

Tingey, D.T., B.D. McVeety, R. Waschmann, M.G. Johnson, D.L. Phillips, P.T. Rygiewicz, and D.M. Olszyk. 1996. A versatile sun-lit controlled-environment facility for studying plant and soil processes. Journal of Environmental Quality. 25:614-625.

Johnson, M.G., E.R. Levine, and J.S. Kern. 1995. Soil organic matter: distribution, genesis, and management to reduce greenhouse gas emissions. Water, Air, and Soil Pollution. 82:593-615.

Johnson, M.G. 1995. The role of soil management in sequestering soil carbon. p. 351-363. In R. Lal and J. Kimble, E. Levine, and B.A. Stewart (eds.) Soil Management and Greenhouse Effect, Advances in Soil Science, CRC Press and Lewis Publishers, Boca Raton, FL.

Kern, J.S. and M.G. Johnson. 1993. Conservation Tillage Impacts on National Soil and Atmospheric Carbon Levels. Soil Science Society of America Journal 57:200-210.

Name: Bruce Jones

Organizational Affiliation:National Exposure Research Laboratory/Environmental Sciences Division

Research Interests:
Changes in landscape patterns on watersheds due to human activities and the effect on the sustainability of aquatic resources and disturbance regimes (e.g., flooding) that can potentially cause significant property damage and endanger human lives. Work includes: developing historical landscape indicator databases to assess the spatial distribution of landscape change in the mid-Atlantic Region of the United States (MAIA) from the early 1970's to the early1990's; evaluating the consequences of 20 years of change in MAIA on ecological and hydrologic processes that sustain aquatic resources; evaluating the impact of future climate scenarios on aquatic resources given the spatial pattern of landscape change between the early 1970's and the early 1990's.

Recent Publications:
Heggem, D.T., A.C. Neale, C.M. Edmonds, L. Bice, and K. Bruce Jones, 1999. "An Ecological Assessment of the Louisiana Tensas River Basin". EPA 600/R-99/016. U.S. Environmental Protection Agency, Office of Research and Development, Washington DC. Available in hard copy only;
Executive Summary is available at http://www.gmpo.gov/tensas.html.

Heggem, D.T., Edmonds, C.M., Neale, A.C., Bice, L., and Jones, K.B. "Forested Wetland Restoration: Identifying Potential Sites in Northeast Louisiana". Geo Info Systems, May 1999. Available in hard copy only.

Heggem, D.T., Edmonds, C.M., Neale, A.C., Bice, L., Jones, K.B. "Landscape Ecology Analysis of Potential Forested Wetland Restoration Sites, Tensas River Basin, Mississippi River Delta Region, Gulf of Mexico". Presented at the National Symposium on Ecosystem Restoration, Baltimore, MD, May 1998. Available in hard copy only.

Jones, K. B.; Neale, A. C.; Edmonds, C. M.; Wickham, J. D.; Ritters, K. H. "Evaluating Forest Fragmentation at Multiple Scales: A Remote Sensing Approach". "North American Symposium: Toward a Unified Framework for Inventorying and Monitoring Forest Ecosystem Resources". November 1998, Guadalahara, Mexico. Available in hard copy only.

Jones, K.B., Ritters, K.H., Wickham, J.D., Tankersley, R.D., O=Neill, R.V., Chaloud, D.J., Smith, E.R., and Nealea, A.C. "An Ecological Assessment of the United States Mid-Atlantic Region: An Atlas". EPA/600/R-97/130. Available at http://www.epa.gov/emfjulte/tpmcmaia/html/maia-atlas.html.

Name: Susan Herrod Julius

Organizational Affiliation:National Center for Environmental Assessment/Global Change Research Program

Research Interests:
Impacts of global change on ecosystems and biodiversity. Other research interests include integrated assessment modeling and decision-support systems applied to adaptation policies.

Recent Publications:
Julius SH and Scheraga JD. June 2000. "The TEAM model for evaluating alternative adaptation strategies". In: Research and Practice in Multi-Criteria Decision Making (Haimes YY, Steuer RE, Eds). Lecture Notes in Economics and Mathematical Systems, Vol. 487. Springer Verlag, Berlin. Forthcoming. Hard copy available.

Cohan D, Stafford RK, Scheraga JD, Herrod S. 1994. "The Global Climate Policy Evaluation Framework". In: Global Climate Change: Science, Policy, and Mitigation Strategies (Mathai CV, Stansland G, Eds). "Proceedings of the Air & Waste Management Association International Specialty Conference". Air & Waste Management, Pittsburgh, PA. Hard copy available.

Name: Sue Kimbrough

Organizational Affiliation:National Risk Management Research Laboratory/Air Pollution Prevention and Control Division

Educational History:Ms. Kimbrough received a B.S. degree in Environmental Science from Vanderbilt University in 1976 and began working for EPA with the Office of Air Quality Planning and Standards in Durham, NC, in 1977. In 1991 she transferred to ORD.

Research Interests:
Ms. Kimbrough's main general interest has been on the design and development of database management systems for air pollution emissions inventory data. She is a member of the APPCD Atmospheric Protection Branch's Mobile Sources Emissions Characterization team looking at co-control opportunities.

Name: Kenneth Krebs

Organizational Affiliation:National Risk Management Research Laboratory/Air Pollution Prevention & Control Division

Research Interests:
Energy Systems Modeling (Markal-Macro); Technology Assessments

Name: Clayton Lake

Organizational Affiliation:National Exposure Research Laboratory/Environmental Sciences Division

Research Interests:
Changes in landscape patterns on watersheds due to human activities and the effect on the sustainability of aquatic resources and disturbance regimes (e.g., flooding) that can potentially cause significant property damage and endanger human lives. Work includes: developing historical landscape indicator databases to assess the spatial distribution of landscape change in the mid-Atlantic Region of the United States (MAIA) from the early 1970's to the early 1990's; evaluating the consequences of 20 years of change in MAIA on ecological and hydrologic processes that sustain aquatic resources; evaluating the impact of future climate scenarios on aquatic resources given the spatial pattern of landscape change between the early 1970's and the early 1990's.

Name: Ray Lassiter

Organizational Affiliation:National Exposure Research Laboratory/Ecosystems Research Division

Research Interests:
Interactions of ecosystem health with changes in climate and land use: Predictive assessments of geographic range of U.S. plant and animal species in response to global change. All available for posting on Web site.

Recent Publications:
Lassiter, R. R., E. O. Box, R. G. Wiegert, J. M. Johnston, J. Berengren, and L. A. Suarez. 2000. "Vulnerability of ecosystems of the Mid-Atlantic Region to Climate Change". Environ. Toxicol. Chem. 19, in press.