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Name: Deborah Santavy

Organizational Affiliation:National Health and Environmental Effects Research Laboratory

Research Interests:
Microbiology; Molecular Biology; Community Ecology; Marine invertebrates and marine microbiology; Microbial Systematics; Biostatistical applications to systematics and ecology.

Publications:
Santavy, D.L. 1995. Diversity of Microorganisms Associated with Marine Invertebrates and Their Roles in the Maintenance of Ecosystems. In: Microbial Diversity and Ecosystem Function. D. Allsopp, R.R. Colwell and D.L. Hawksworth, Editors. CAB International, Wallingford, UK. Pp. 211-229. (ERL,GB X828).

Name: Dr. Joel D. Scheraga

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

Educational History:
Brown University, Providence, RI, Ph.D., Economics, 1981.
Brown University, M.A., Economics, 1979.
Brown University, Post-Baccalaureate Studies, Economics, 1976-77.
Brown University, A.B., Geology-Mathematics/Physics, 1976.

Short Biographic Sketch:
Dr. Joel D. Scheraga is the Program Director for the Global Change Research Program in the U.S. Environmental Protection Agency's Office of Research and Development. Dr. Scheraga directs assessments of the potential impacts of climate change and climate variability on human health, the environment, and the US economy. He is Vice Chair of the US National Assessment Workgroup, was a Lead Author of the 1997 Intergovernmental Panel on Climate Change (IPCC) North American Regional Assessment, and an Assisting Lead Author for the 1994 IPCC Technical Guidelines for Assessing Climate Change Impacts and Adaptations. Dr. Scheraga assisted with the development of the U.S. Climate Change Action Plan in 1993, and contributed to EPA's 1990 report to Congress entitled, Policy Options for Stabilizing Global Climate.

Prior to joining EPA, he was an Assistant Professor of Economics at Rutgers University from 1981-1987, and a Visiting Assistant Professor of Economics at Princeton University from 1985-1986. He has published numerous articles on environmental economics (global climate change; national energy policy; acid rain), applied microeconomics (economic problems related to the space program), microeconomic theory (discounting theory; valuing the costs and benefits of environmental regulations; the theory of technological change), and public policy (the integration of science and policy).

Research Interests:
1. Global climate change (assessment of potential consequences for human health, ecological systems, and economic activity; greenhouse gas mitigation);
2. Integration of science and policy;
3. Environmental economics (integrated assessment, discounting theory, benefits and costs of environmental regulations, theory of technological change);
4. Energy economics.

Recent Publications:
"Coping with Climate Change," in Climate Change in the Upper Great Lakes Region: A Workshop Report, Peter J. Sousounis, editor, The University of Michigan, Ann Arbor, MI, forthcoming, 2000.

"The TEAM Model for Evaluating Alternative Adaptation Strategies," with Susan Herrod-Julius, in Proceedings of the XIV-th International Conference on Multiple Criteria Decision Making (refereed publication), Springer-Verlag, forthcoming, 2000.

Editor, Discounting and Environmental Problems, Volume to be included in The International Library of Environmental Economics and Policy series, Ashgate Publishing Company, forthcoming, 2000.

Guest Editor with Brent M. Yarnal and Laurence S. Kalkstein, Special Issue of Climate Research, "Mid-Atlantic Regional Assessment of Climate Change Impacts," Vol. 14, No. 3, May 2, 2000.

"Risks, Opportunities, and Adaptation to Climate Change," with Anne E. Grambsch, Climate Research, Vol. 11, No. 1, 1998, 85-95.

"Climate Change, Regional Impacts and Adaption," in Adapting to Climate Change and Variability in the Great Lakes-St. Lawrence Basin, Proceedings of a binational symposium, LD Mortsch, S. Quon, L. Craig, B. Mills, and B. Wrenn, editors, Environment Canada, University of Waterloo Graphics, Waterloo, 1998, 40-51.

"The Regional Impacts of Climate Change: North America," with David S. Shriner, Roger B. Street, et al., in The Regional Impacts of Climate Change - An Assessment of Vulnerability, Chapter 8, Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, New York, 1997.

Guest Editor with Laurence S. Kalkstein and Brent M. Yarnal, Special Issue of Climate Research, "Regional Assessments of Climate Change and Policy Implications," Vol. 11, No. 1, 1998.

Name: E. Terrence Slonecker

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.

Name: Ronald J. Spiegel

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

Research Interests:
Assessing cutting-edge environmental technologies, including: fuel cell application to waste methane gas (landfill gas and sewage anaerobic digester gas); intelligent control (fuzzy logic, neural networks, and genetic algorithms) of electric motors for optimal operational energy efficiency; intelligent control of wind turbines for enhanced energy output and performance; solar photovoltaics utilized as demand-side power supplies for buildings, and transportation fuel development via renewable energy technologies.

Recent Publications:
RJ Spiegel, JC Trocciola, and JL Preston, "Test Results for Fuel-Cell Operation on Landfill Gas", Energy, Vol. 22, No. 8, pp. 777-786, 1997.

RJ Spiegel, EC Kern,Jr., and DL Greenberg, "Demonstration of the Environmental and Demand-Side Management Benefits of Grid-Connected Photovoltaic Power Systems", Solar Energy, Vol. 62, No. 5, pp. 345-358, 1998.

RJ Spiegel, T Gilchrist, and DE House, "Fuel Cell Bus Operation at High Altitude", Journal of Power and Energy, Vol. 213, pp. 57-68, 1999.

RJ Spiegel, JC Trocciola, HC Healy, and RR Lesieur, "Removal of Hydrogen Sulfide from Anaerobic Digester Gas", U.S. Patent Number 5,916,438, June 1999.

RJ Spiegel, JL Preston, and JC Trocciola, "Fuel Cell Operation on Landfill Gas at Penrose Power Station", Energy, Vol. 22, pp. 723-742, 1999.

RJ Spiegel, SA Thorneloe, JC Trocciola, and JL Preston, "Fuel Cell Operation on Anaerobic Digester Gas: Conceptual Design and Assessment", Waste Management, Vol. 19, pp. 389-399, 1999.

RJ Spiegel, MW Turner, and VE McCormick, "Fuzzy-Logic Controllers for Energy Optimization of Inverter-Fed Induction Motor Drives", submitted to Fuzzy Sets and Systems, 1999.

RJ Spiegel, DL Greenberg, EC Kern, and DE house, "Emissions Reduction Data for Grid-Connected Photovoltaic Power Systems", in Press, Solar Energy, 2000.

RJ Spiegel and JL Preston, "Test Results for Fuel Cell Operation on Anaerobic Digester Gas", in Press, Journal of Power Sources, 2000.

Name: Luis Suarez

Organizational Affiliation:National Exposure Research Laboratory/Ecosystems Research Division

Research Interests:
Interactions of ecosystem health with changing climate; models for climate change and soil biogeochemical cycles.

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.

Suarez, L.A. 1999. "Coupling the soil model S to a global change model and a terrestrial vegetation model to support regional climate scenarios". EPA Report.

Zepp, R.G., L. Prieto, and L. Suarez, "UV-B stressor profile", In: Mid-Atlantic Stressor Atlas, EPA Report, 1998.

Name: Kevin Summers

Organizational Affiliation: National Health and Environmental Effects Research Laboratory

Research Interests and Skills:
Estuarine Ecology, Statistics, Environmental Monitoring, Ecosystem Ecology, Systems Ecology/Modeling

Name: David T. Tingey

Organizational Affiliation:National Health and Environmental Effects Research Laboratory

Research Interests:
I am interested in the effects of elevated CO2 and climate change on terrestrial ecosystems. Currently, I am using both experimental and modeling approaches to understand how plants (both above- and belowground components) respond to and are impacted by elevated CO2 and climate change.

Publications:
Apple, M.E., M.S. Lucash, D.M. Olszyk and D.T. Tingey. 1998. Morphogenesis of Douglas-fir buds is altered at elevated temperature but at elevated CO2. Environmental Experimental Botany 40:159-172.

Olszyk, D.M., C. Wise, E. VanEss, and D. T. Tingey. 1988. Elevated temperature but not elevated CO2 affects long-term patterns of stem diameter and height of Douglas-fir seedlings. Canadian Journal Forest Research 28:1046-1054.

Marks, D., J. Kimball, D. Tingey and T. Link. 1998. The sensitivity of snowmelt processes to climate conditions and forest cover during rain-on-snow: A case study of the 1996 Pacific Northwest flood. Hydrological Processes 12:1569-1587.

Olszyk, D.M., C. Wise, E. VanEss, M. Apple and D. T. Tingey 1998. Phenology and growth of shoots, needles, and buds of Douglas-fir seedlings with elevated CO2 and/or temperature. Canadian Journal Botany 76:1991-2001.

Apple, M.E., M.S. Lucash, D.L. Phillips, D.M. Olszyk, and D. T. Tingey. 1999. Internal temperature of Douglas-fir buds is altered at elevated temperature. Environmental Experimental Botany 41:25-30.

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.

Lewis, J.D, D. Olszyk and D.T. Tingey 1999. Seasonal patterns of photosynthetic light response in Douglas-fir seedlings subjected to elevated atmospheric CO2 and temperature. Tree Physiology 19:243-252.

Ormrod, D.P., V.M. Lesser, D.M. Olszyk and D.T. Tingey. 1999. Elevated temperature and carbon dioxide affect chlorophylls and carotenoids in Douglas-fir seedlings. International Journal Plant Science 160:529-534.

Tingey, D.T., R.S. Waschmann, D. L. Phillips and D.M. Olszyk. 2000. The carbon dioxide leakage from chambers measured using sulfur hexafluoride. Environmental and Experimental Botany (In Press)

Apple, M.E., D.M. Olszyk, , J.D. Lewis, D. Southworth and D. T. Tingey. 2000. Morphology and stomatal function of Douglas-fir needles exposed to climate change: elevated CO2 and/or temperature. International Journal Plant Science (In Press)

Johnson, M.J., 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)

Phillips, D.L., M.G. Johnson, D.T. Tingey, C. Biggart, R.S. Nowak, and J.C. Newsom. 2000. Minirhizotron installation in sandy, rocky soils with minimal soil disturbance. Soil Science Society of America Journal (In Press)

Tingey, D.T., D.L. Phillips, and M.G. Johnson. 2000. Elevated CO2 and Conifer Roots: Effects on Growth, Life Span and Turnover. New Phytologist (In Press)

Name: Tim Wade

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.

Name: Dr. Henry A. Walker

Organizational Affiliation:National Health and Environmental Effects Research Laboratory

Research Interests:
Methods to distinguish between anthropogenic and natural changes in coastal ecosystems for use in integrated assessments. Current Research is focused on applications in the Potomac watershed and upper Chesapeake Bay with an emphasis on the joint effects of climate variability and anthropogenic changes to nutrient loading. Research involves participation in the Mid-Atlantic Integrated Assessment, collaboration with the Mid-Atlantic Regional Assessment of Climate Change Impacts (Water Resources and Coastal Impacts working groups, Penn. State Univ.), and interaction with the New England Regional Assessment team (Univ. of N.H.)

Publications:
Keller, AA, Oviatt, CA, Walker, HA, Hawks, JD. 1999. Predicted Impacts of Elevated Temperature on the Magnitude of the Winter-Spring Phytoplankton Bloom in Temperate Coastal Waters: a Mesocosm Study. Limnology and Oceanography. 44(2):344-356.

Najjar, R.G., H.A. Walker, P.J. Anderson, E.J. Barron, R.J. Bord, J.R. Gibson, V.S. Kennedy, C.G. Knight, P. Megonigal, R. O'Connor, C.D. Polsky, N.P Psuty, B. Richards, L.G. Sorenson, E. Steele, and R.S. Swanson. (In Press). The potential impacts of climate change on the mid-Atlantic coastal region. Climate Research.

Neff, R. H. Chang, C.G. Knight, R.G. Najjar, B. Yarnal, and H.A. Walker. (In Press). Impact of climate variation and change on mid-Atlantic region hydrology and water resources. Climate Research.

Walker, HA, Latimer, JS, Dettmann, EH. (In Press) Assessing the effects of natural and anthropogenic stressors in the Potomac Estuary: implications for long-term monitoring. Environmental Monitoring and Assessment

Walker, HA. (In Review). The science behind our understanding of climate change in New England. For: The New England Regional Assessment; a component of the U.S. National Assessment of the Potential Consequences of Climate Variability and Change.

Name: John Walker

Organizational Affiliation: National Risk Management Research Laboratory

Educational History: Air Pollution Prevention and Control Division

Research Interests:
John is a chemist in the Atmospheric Protection Branch. He began working for the EPA while completing his MS in Atmospheric Science at North Carolina State University. John's work focuses on quantification and characterization of biogenic nitrogen trace gas emissions in terrestrial and aquatic ecosystems including riparian zones. Soil emissions of NO, N2O, and NH3 trace gases are determined. Other research projects and interests include characterization of agricultural and mobile source NH3 emissions (e.g., for co-control evaluations) as well as wet deposition and transport of NH4+.

Recent Publications:
Walker J. T., Aneja V. P. and Dickey D. (1998) Atmospheric transport and wet deposition of ammonium in North Carolina, USA. (accepted: Atmospheric Environment).

Aneja V. P., Chauhan J. P. and Walker J. T. (1999) Characterization of atmospheric ammonia emissions from swine waste storage and treatment lagoons. (accepted: Journal of Geophysical Research).

Walker J. T., Geron C. D., Vose J., and Swank W. (2000) Nitric oxide flux from a recovering riparian zone within a grazed pasture. (in preparation).

Abstracts of the above articles are available.

Name: Jordan M. West

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

Research Interests:
Assessing the impacts of global change (including climate change, land use change, and UV radiation) on aquatic ecosystems and biodiversity; and developing potential management responses. Current projects include research on the effects of layered stressors on coral reefs, building resilience to climate change into networks of coral reef marine protected areas, developing coral reef management strategies in the context of climate change, assessing impacts of global change on aquatic ecosystem services in watersheds, and developing information tools for understanding and adapting to climate impacts in the Great Lakes Region.

Recent Publications:
Wells, S., J. M. West, S. Westmacott and K. Teleki. 2001. Management of bleached and severely damaged coral reefs. In, Schuttenberg, H. (ed.). Coral Bleaching: Causes, Consequences, and Response. Papers presented at the 9th International Coral Reef Symposium session on "Coral Bleaching: Assessing and Linking Ecological and Socioeconomic Impacts, Future Trends and Mitigation Planning." Coastal Management Report #2230. ISBN # 1-885454-40-6. Coastal Resources Center. Narragansett, RI.

West, J.M. and R.V. Salm. 2003. Resistance and resilience to coral bleaching: implications for coral reef conservation and management. Conservation Biology 17(4): 956-967.

Westmacott, S., K. Teleki, S. Wells, and J. M. West. 2000. Management of bleached and severely damaged coral reefs. IUCN, Gland, Switzerland, and Cambridge, UK: 36 pp. http://www.iucn.org/themes/marine/pdf/coralen.pdf

Name: Elizabeth Wilson

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

Research Interests:
Interdisciplinary assessments including wastes evaluations in Europe.

Name: Richard Zepp

Organizational Affiliation:National Exposure Research Laboratory/Ecosystems Research Division

Research Interests:
Interactions of ecosystem health and water quality with changing climate and UV radiation

Recent Publications:
R. Zepp, M. A. Moran and W. Sheldon. Abstract. "Interactions between photochemical and microbial decomposition in modifying the biological availability and optical properties of estuarine dissolved organic matter". EOS Trans. AGU, 80, OS63, 2000.

Moran, M.A., W. Sheldon, and R.G. Zepp. 2000. "Carbon loss and optical property changes during long-term photochemical and biological degradation of estuarine dissolved organic matter". Limnol. Oceanog., in press.

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