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Staff Profiles

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Name: Dr. Gerald T. Ankley

Organizational Affiliation: National Health and Environmental Effects Research Laboratory

Research Interests:
Interactions between ultraviolet (UV) light and polycylic aromatic hydrocarbons (PAHs) in causing toxicity to aquatic species. Direct effects of UV on survival and development of native North American anurans

Publications:
Ankley, G.T., S.A. Collyard, P.D. Monson and P.A. Kosian. 1994. Influence of ultraviolet light on the toxicity of sediments contaminated with polycyclic aromatic hydrocarbons. Environ. Toxicol. Chem. 13, 1791-1796.

Mekenyan, O.G., G.T. Ankley, G.D. Veith and D.J. Call. 1994. QSARs for photoinduced toxicity: 1. Acute lethality of polycyclic aromatic hydrocarabons to Daphnia magna. Chemosphere 28, 567-582.

Mekenyan, O.G., G. T. Ankley, G.D. Veith and D.J. Call. 1994 QSAR estimates of excited states and photoinduced acute toxicity of polycyclic aromatic hydrocarbons. SAR QSAR Environ. Res. 2, 237-247.

Ankley, G.T., R.J. Erickson, G.L. Phipps, V. R. Mattson, P.A. Kosian, B.R. Sheedy and J.S. Cox. 1995. Effects of light intensity on the phototoxicity of fluoranthene to a benthic macroinvertebrate. Environ. Sci. Technol. 29, 2828-2833.

Monson, P.D., G. T. Ankley and P.A. Kosian. 1995. Phototoxic response of Lumbriculus variegatus to sediments contaminated by polycyclic aromatic hydrocarbons. Environ. Toxicol. Chem. 14, 891-894.

Mekenyan, O.G., G. T. Ankley, G.D. Veith and D.J. Call. 1995. QSARs for photoinduced toxicity of aromatic hydrocarbons. SAR QSAR Environ. Res. 4, 139-145.

Veith, G.D., O.G. Mekenyan, G.T. Ankley and D.J. Call. 1995. A QSAR evaluation of alpha-terthienyl phototoxicity. Environ. Sci. Technol. 29, 1267-1272.

Veith, G.D., O.G. Mekenyan, G.T. Ankley and D.J. Call. 1995. A QSAR analysis of substituent effects on the photoinduced acute toxicity of PAHs. Chemosphere 30, 2129-2142.

Ankley, G.T., O.G. Mekenyan, P.A. Kosian, E.A. Makynen, D.R. Mount, P.D. Monson and D.J. Call. 1996. Identification of phototoxic polycyclic aromatic hydrocarbons through sample fractionation and QSAR analysis. SAR QSAR Environ. Res. 5, 177-183.

Ankley, G.T., R.J. Erickson, B.R. Sheedy, P.A. Kosian, V.R. Mattson and J.S. Cox. 1997. Evaluation of models for predicting the phototoxic potency of polycyclic aromatic hydrocarbons. Aquat. Toxicol. 37, 37-50.

Swartz, R.C., S.P. Ferraro, J.O. Lamerson, F.A. Cole, R.J. Ozretich, B.L. Boese, D.W. Schults, M.A. Behrenfeld and G.T. Ankley. 1997. Photoactivation and toxicity of mixtures of PAH compounds in marine sediment. Environ. Toxicol. Chem. 16, 2151-2157.

Ankley, G.T., J.E. Tietge, D.L. DeFoe, K.M. Jensen, G.W. Holcombe and E.J. Durhan. 1998. Effects of ultraviolet light and methoprene on survival and development of Rana pipiens. Environ. Toxicol. Chem. 17, 2530-2542.

Kosian, P.A., E.A. Makynen, P.D. Monson, D.R. Mount, A. Spacie, O.G. Mekenyan and G.T. Ankley. 1998. Development of a toxicity-based fractionation approach for the identification of phototoxic polycyclic aromatic hydrocarbons in sediment pore water. Environ. Toxicol. Chem. 17, 1021-1033.

Erickson, R.J., G.T. Ankley, D.L. DeFoe, P.A. Kosian and E.A. Makynen. 1999. Additive toxicity of binary mixtures of phototoxic polycyclic aromatic hydrocarbons to the oligichaete Lumbriculus variegatus. Toxicol. Appl. Pharmacol. 154, 97-105.

Monson, P.D., D.J. Call, D.J. C ox, K.J. Liber and G.T. Ankley. 1999. Photoinduced toxicity of fluoranthene to the northern leopard frog (Rana pipiens). Environ. Toxicol. Chem. 18, 308-312.

Ankley, G.T., J.E. Tietge, G.W. Holcombe, D.L. DeFoe, S.A. Diamond, K.M. Jensen and S.J. Degitz. 2000. Effects of laboratory ultraviolet radiation and natural sunlight on survival and development of Rana pipiens. Can. J. Zool. In Press.

Name: Lee Beck

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

Research Interests:
Software for emission inventories and for ranking mitigation technologies. Inventory uncertainty methodology (Data Attribute Rating System).

Recent Publications:
Beck, L. L. and Burklin, C. E. "A Prototype Tool for Evaluating the Cost and Effectiveness of Greenhouse Gas Mitigation Technologies". Presented on October 28, 1999 and approved to be published in Proceedings of the Air and Waste Management Association Proceedings for AWMA Conference on The Emission Inventory: Regional Strategies for the Future. Air and Waste Management Association. Pittsburgh, Pennsylvania. A copy of the above paper or its abstract is available for posting on website. Description of GloED software, with screen captures, is posted at
http://www.epa.gov/crb/apb/gloed/gloed.htm. Description of GloTech software, with screen captures, is posted at http://www.epa.gov/crb/apb/glotech/glotech.htm.

Name: Britta G. Bierwagen

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

Research Interests:
Assessing the impacts of global change (including climate change and variability and land-use change) on aquatic ecosystems, water quality, and ecosystem services, and developing potential adaptation and management responses. Current projects include research on the effects of climate and land-use change on non-point source pollutant constituents in estuaries; effects of climate and land-use change on biocriteria used in streams and wadeable rivers, wetlands, and coral reef ecosystems; effects of climate and land-use change on invasive species spread and establishment; and effects of climate and land-use change on feedbacks between invasive species and water quality.

Recent Publications:
Bierwagen, B.G. and Kendall, B.E. Predicting butterfly dispersal distance using evolutionary and ecological correlates. Ecological Entomology. In review.

Bierwagen, B.G. A sensitivity analysis of ecological connectivity in simulated landscapes. Ecological Modelling. In review.

Bierwagen, B.G. Predicting ecological connectivity in urbanizing landscapes. Environment and Planning B: Planning and Design. In review.

Bierwagen, B.G. Initial habitat amount and configuration determine changes in connectivity associated with urbanization. Ecological Applications. Sumitted.

Pyke, C. R., B. G. Bierwagen, M. de la Garza, C. Wild, J. Harris, and J. Merrick. 2003. Floristic analysis of an interior vernal pond complex, Santa Barbara, California. MadroƱo 50:147-161.

Name: Sandy Bird

Organizational Affiliation:National Exposure Research Laboratory/Ecosystems Research Division

Research Interests:
Human dimensions of global change in the U.S.; models for prediction of land use change to impervious land cover in the Mid-Atlantic Region.

Recent Publications:
Bird, S. L. and L. Exum. 1998. "Population dynamics and land use change in the Mid-Atlantic". Abstract of paper presented at SETAC symposium on Modeling and Measuring the Vulnerability of Ecosystems at Regional Scales for Use in Ecological Risk Assessment and Risk Management, Seattle, WA, August, 1998.

Name: Roger Burke

Organizational Affiliation:National Exposure Research Laboratory/Ecosystems Research Division

Research Interests:
Interactions of ecosystem health with changes in climate and land use: Indicators of shifts in microbial activity.

Recent Publications:
Burke, R. A., M. Molina and J. E. Cox. 1999. "Use of stable carbon isotope ratios of fatty acids to evaluate microbial carbon sources in terrestrial environments", presented at the 1999 Soil Science Society of America National Meeting, Salt Lake City, UT, November, 1999.

Burke, R. A., J. L. Meyer, J. M. Cruse, K. M. Birkhead, and M. J. Paul. 1999. "Soil-atmosphere exchange of methane in adjacent cultivated and floodplain forest soils". J. Geophys. Res. 104D: 8161-8171.

Burke, R.A., M. Molina, J. E. Cox, and L. J. Osher. 1998. Abstract. "Effects of land use on the composition and stable carbon isotopic ratio of bacterial fatty acids", presented at the 1998 Soil Science Society of America National Meeting, Baltimore, MD, October 19 - 22, 1998.

Name: Robert H. Borgwardt

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

Research Interests:
Interests are process engineering and evaluation of biomass as a source of transportation fuel. Projects are integrated assessment of biomass-derived alternative transportation fuels for co-control of greenhouse-gas and criteria-air-pollution emissions from mobile sources.

Recent Publications:
Borgwardt, R.H. "Hynol Process Evaluation", EPA-600/R-97-153 (NTIS PB98-127319)1998.

Dong, Y. and R.H. Borgwardt ABiomass "Reactivity in Gasification by the Hynol Process", Energy & Fuels, Vol. 12, No. 3, pp. 479-484 (1998).

Borgwardt, R.H. "Ehanol Production from Biomass and Natural Gas as Transportation Fuel", Industrial & Engineering Chemistry Research Vol. 37, No. 9, pp. 3760-3767 (1998).

Borgwardt, R.H. "Introduction of Biomass as a Renewable Energy Component of Future Transportation Fuels", SAE paper No. 982497, SAE International, Warrendale, PA (1998).

Borgwardt, R.H. "Transportation Fuel from Cellulosic Biomass: A Comparative Assessment of Ethanol and Methanol Options", Proc. Instn. Mech. Engrs.,. Vol 213, Part A, pp. 399-407 (1999).

Borgwardt, R.H. "Platinum, Fuel Cells, and Future Road Transport", in review (March, 2000).

Name: Deborah Chaloud

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:
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: William Davis

Organizational Affiliation:National Health and Environmental Effects Research Laboratory

Research Interests and Skills:
Tropical ecosystems; Life history cycles; Ecological specializations; Community assessment, Biology - evolution of fishes

Publications:
Davis, W.P., K.W. Thornton and B. Levinson. 1994. Framework for Assessing Effects of Global Climate Change on Mangrove Ecosystems. EPA/600/J-94/500. Bull. Mar. Sci. 54(3):1045-1058. (ERL,GB 869).

Davis, William P., D. Scott Taylor and Bruce J. Turner. 1995. Does the Autecology of the Mangrove Rivulus Fish (Rivulus marmoratus) Reflect a Paradigm for Mangrove Ecosystem Sensitivity?. EPA/600/J-95/458. Bull. Mar. Sci. 57(1):208-214. (ERL,GB X810).

Name: Dr. Naomi E. Detenbeck

Organizational Affiliation:National Health and Environmental Effects Research Laboratory

Research Interests:
Influence of watershed characteristics on fish population vulnerability to global climate change via altered flow and thermal regimes. Diagnosis of amphibian metapopulation health using a combination of regional landscape characteristics and regional/local indicators of habitat quality and potential UV-B exposure.

Recent Publications:
Trenham, P., S.A. Diamond, N.E. Detenbeck, and G.T. Ankley. PRIMENet Ultraviolet Radiation /Amphibian Populations Research Planning Workshop. February 1-3, 1999. U.S. EPA Mid-Continent Ecology Division, Duluth, MN.

Name: Curtis Edmonds

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.

Kepner, W.; Watts, C.; Edmonds, C.; Arias, H. "Landscape Change in the Upper San Pedro Watershed". Presented at the Eleventh Annual Symposium of the Arizona Hydrological Society. September 1998, Tucson, AZ. Available in hard copy only.

Name: Virginia Engle

Organizational Affiliation:National Health and Environmental Effects Research Laboratory

Research Interests and Skills:
Estuarine ecology; Benthic ecology; Environmental monitoring; Statistical design, analysis, and interpretation; Development of ecological indicators; Geographic Initiatives

Publications:
Engle, Virginia D. and J. Kevin Summers. In press. Latitudinal Gradients in Benthic Community Structure in Western Atlantic Estuaries. J. Biogeogr. 48 p. (ERL,GB 1052).

Name: John Furlow

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

Research Interests:
Impacts of climate and land use change on water quality, drinking and waste water infrastructure. Use of stakeholder input in research and planning. Oversees Great Lakes Regional Assesment of Consequences of Global Change.

 

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