Presentations and Invited Lectures

Invited Presentations at Scientific Conferences

Contributed Presentations at Scientific Conferences

Guest Lectures at Academic/Research Institutions

Invited Presentations at Scientific Conferences:

Roden, E.E. 2004. Analysis of FeIII oxide reactivity toward long-term bacterial vs. chemical reduction. 11th International Symposium on Water-Rock Interaction, Saratoga Springs, NY, June 2004.

Roden, E.E. 2004. Surface chemical and thermodynamic controls on bacterial metal reduction in subsurface environments. U.S. Federal Interagency Workshop on Conceptual Model Development for Subsurface Reactive Transport Modeling of Inorganic Contaminants, Radionuclides, and Nutrients, Albuquerque, NM, April 2004.

Roden, E.E. 2004. U(VI) reduction at the solid-water interface. U.S. Department of Energy, Natural and Enhanced Bioremediation Annual PI Meeting, Warrenton, VA, March 2004.

Roden, E.E. 2003. Thermodynamic versus surface area control of microbial Fe(III) oxide reduction kinetics. American Geophysical Union Fall Meeting, San Francisco, CA, December 2003.

Roden, E.E. 2003. Geochemical and microbiological controls on dissimilatory iron reduction. International Workshop on Biogeochemical Processes Involving Iron Minerals in Natural Waters, Monte Verita (Ascona), Switzerland, November 2003.

Roden, E.E. 2003. Coupled microbial Fe(III) oxide reduction and uranium(VI) reduction in subsurface sediments. U.S. Department of Energy, Natural and Enhanced Bioremediation Field Research Center Workshop, Oak Ridge National Laboratory, Oak Ridge, TN, September 2003.

Roden, E.E. 2003. Microbial Fe(III) oxide reduction: an obvious choice for mesoscale experiments and numerical modeling. U.S. Department of Energy, Idaho National Engineering and Environmental Laboratory Workshop on Mesoscale Subsurface Science Research, Salt Lake City, UT, August 2003.

Roden, E.E. 2003. Reactive transport modeling of microbial-geochemical interactions in the subsurface: coupled Fe(III) oxide/uranium(VI) reduction. U.S. Department of Energy, Basic Energy Sciences Workshop on Integrating Numerical Models of Reactive Flow and Transport into Fundamental Geoscience Research, Carmel Valley, CA, June 2003.

Roden, E.E. and K.A. Weber. 2003. Nitrate-dependent Fe(II) oxidation in surface and subsurface sediments. American Society for Microbiology Annual Meeting, Washington, DC, May 2003.

Roden, E.E. and K.A. Weber. 2003. Influence of nitrate on iron redox cycling and mineralogy in freshwater sediments. Clay Society and Mineralogicial Society of America Classic Clays and Minerals Conference, Athens, GA, June 2003.

Roden, E.E. and K.A. Weber. 2002. Microbial nitrate-dependent oxidation of solid-phase Fe(II). American Chemical Society National Meeting, Orlando, FL, April 2002.

Roden, E.E., D. Sobolev, and G.W. Luther III. 2001. Evidence for rapid microscale redox cycling of iron in circumneutral environments. International Sympsosium on Microbial Ecology, Amsterdam, The Netherlands, September 2001.

Warner, K.A., E.E. Roden, and J.C. Bonzongo. 2001. Effects of different electron accepting conditions on net microbial mercury methylation potential in mineral-rich sediments. Workshop on the Fate, Transport, and Transformation of Mercury in Aquatic and Terrestrial Environments. West Palm Beach, FL, May 2001.

Roden, E.E. and D. Sobolev. 2000. Coupled microbial Fe(II) oxidation Fe(III) reduction at redox interfaces: potential for rapid microscale cycling of iron. American Geophysical Union Fall Meeting, San Francisco, FL, December 2000.

Roden, E.E. and F.G. Ferris. 2000. Immobilization of aqueous stronium during carbonate mineral formation coupled to microbial Fe(III) oxide reduction. Symposium on Chemical-Biological Interactions in Contaminant Fate, American Chemical Society National Meeting, Washington, DC, August 2000.

Roden, E.E. 2000. Kinetics of microbial Fe(III) oxide reduction in freshwater wetland sediments. American Society of Limnology and Oceanography Aquatic Sciences Meeting, Copenhagen, Denmark, June 2000.

Warner, K.A., E.E. Roden, and J.C. Bonzongo. 2000. Microbial mercury methylation and demethylation potential rates under different electron accepting conditions in mineral-rich wetland sediments. American Society of Limnology and Oceanography Aquatic Sciences Meeting, Copenhagen, Denmark, June 2000.

Roden, E.E. 1999. Microbial and geochemical controls on bacterial Fe(III) oxide reduction: links between surface chemistry and microbial physiology. Gordon Conference on Applied and Environmental Microbiology, June 1999.

Roden, E.E. 1997. Organic carbon oxidation coupled to microbial Fe(III) oxide reduction in freshwater wetland sediments. American Society for Microbiology Annual Meeting, Miami, FL, May 1997.

Roden, E.E. 1997. Geochemical and microbiological controls on bacterial iron oxide reduction. Geological Society of America Southeastern Region Annual Meeting, Auburn, AL, September 1997.

Roden, E.E. M.M. Urrutia, and J.M. Zachara. 1996. Surface area and microbiological controls on Fe(III) oxide reduction. American Chemical Society, Industrial and Environmental Chemistry Division Special Session on Emerging Technologies in Hazardous Waste Management, Atlanta, GA, October 1996.

Roden, E.E. 1996. Influence of anaerobic microbial metabolism on phosphate mobility in wetland sediments. Annual Meeting of the Soil Science Society of America, Indiapolis, IN, November 1996.

Roden, E.E. 1996. Fe(III) oxide reduction in wetland sediments. Fourth Symposium on Biogeochemistry of Wetlands, New Orleans, LA, March 1996.

Roden, E.E. 1995. Microbial Fe(III) oxide reduction and Fe cycling in iron-rich freshwater wetland sediment. American Chemical Society, Industrial and Environmental Chemistry Division Special Session on Emerging Technologies in Hazardous Waste Management, Atlanta, GA, October 1995.

Roden, E.E. and Y.A. Gorby. 1994. Microbial reduction of crystalline Fe(III) oxides and structural Fe(III) in layered clay minerals. American Chemical Society, Industrial and Environmental Chemistry Division Special Session on Emerging Technologies in Hazardous Waste Management, Atlanta, GA, October 1994.

Roden, E.E. 1990. Carbon cycling in mesohaline Chesapeake Bay sediments. New perspectives in the Chesapeake system 1990: proceedings of a conference. Chesapeake Research Consortium, November 1990.

 

Contributed Presentations at Scientific Conferences:

Roden, E.E. and B.H. Jeon. 2004. Biological versus chemical reduction of U(VI) at the solid-water interface. American Society for Microbiology General Meeting, May 2004.

Roden, E.E. and E. Sedo. 2003. Framework for numerical simulation of bacterial Fe(III) oxide reduction in circumneutral soil and sedimentary environments. American Geophysical Union Fall Meeting, December 2003.

Roden, E.E. 2003.  Control of iron redox cycling in freshwater wetland sediments by microscale Fe(II)-O2 reaction dynamics at the sediment-water interface. American Society of Limnology and Oceanography Aquatic Sciences Meeting, February 2003.

B.H. Jeon and E.E. Roden. 2003. Reductive immobilization of U(VI) at the oxide-water interface. American Chemical Society National Meeting, March 2003.

Roden, E.E. and T.D. Scheibe. 2002. Multiple pore region model of uranium(VI) reductive immobilization in structured subsurface media. American Geophysical Union Fall Meeting, December 2002.

Wildung, R.E., S.W.  Li, C.J. Murray, K.M. Krupka, Y. Xie, N.J. Hess, and E.E. Roden. 2002. Technetium reduction in sediments of a shallow aquifer exhibiting dissimilatory iron reduction potential:  influence of sediment physicochemical properties. International Society for Subsurface Microbiology Meeting, August 2002.

Overstreet, K.B., E.E. Roden, and C.J. Murray. 2001. Bacterial Fe(III) oxide reduction in intact coastal plain aquifer sediments. Geological Society of America Annual Meeting, October 2001.

Murray, C.J., Y.L. Xie, E.E. Roden, and K.B. Overstreet. 2001. Microbial reduction potential in coastal plain sediments. Geological Society of America Annual Meeting, October 2001.

Barnett, M.O., E.E. Roden, P.M. Jardine, S.C. Brooks. 2001. Biogeochemical interactions of U and Fe(III) oxides in subsurface environments: modeling and experimental results. American Chemical Society National Meeting, August 2001.

Roden, E.E. and D. Sobolev. 2001. Numerical simulation of bacterial Fe Redox cycling in experimental culture systems.  American Society for Microbiology General Meeting, May 2001.

Sobolev, D. and E.E. Roden. 2001. Phylogenetic and physiological characterization of a neutrophilic lithotrophic Fe(II)-oxidizing bacterium isolated from wetland sediments. American Society for Microbiology General Meeting, May 2001.

Weber, K.A. P.F. Churchill, and E.E. Roden. 2001. Microbial community structure associated with the interaction between nitrogen and iron redox cycles in freshwater sediments. American Society for Microbiology General Meeting, May 2001.

Roden, E.E. and D. Sobolev. 2000. Suboxic deposition of ferric iron by bacteria in opposing gradients of Fe(II) and oxygen at circumneutral pH. American Society of Limnology and Oceanography Aquatic Sciences Meeting, June 2000.

Roden, E.E. 2000. Direct evidence for microbial reduction of solid-phase humic substances in freshwater wetland sediments. American Society for Microbiology Annual Meeting, May 2000.

Sobolev, D. and E.E. Roden. 2000. Interaction between Fe(III)-reducing and Fe(II)-oxidizing bacteria: potential for microscale microbial cycling of iron. American Society for Microbiology Annual Meeting, May 2000.

Weber, K.A., M.R. Leonardo, and E.E. Roden. 2000. Ferrous iron oxidation coupled to nitrate reduction by dissimilatory iron-reducing bacteria. American Society for Microbiology Annual Meeting, May 2000.

Baer, M.L., E.E. Roden, and P.F. Churchill. 2000. Analysis of successional changes within a natural microbial biofilm community using denaturing gradient gel electrophoresis. American Society for Microbiology Annual Meeting, May 2000.
Roden, E.E., M.R. Leonardo, V.K. Keith, and F.G. Ferris. 1999. Immobilization of aqueous strontium during carbonate mineral formation coupled to microbial Fe(III) Oxide Reduction. International Society for Subsurface Microbiology Meeting, August 1999.

Roden, E.E. and F.G. Ferris. 1999. Immobilization of aqueous stronium during carbonate mineral formation coupled to microbial Fe(III) oxide reduction. International Symposium on Environmental Biogeochemistry, October 1999.

Roden, E.E. and R.G. Wetzel. 1999. Humic substances accelerate microbial reduction of amorphous Fe(III) oxide in aquatic sediments. American Society for Microbiology Annual Meeting, May 1999.

Keith, V.K. and E.E. Roden. 1999. Immobilization of aqueous strontium during bacterial reduction of synthetic Fe(III) oxides. American Society for Microbiology Annual Meeting, May 1999.

Jackson, C.R., E.E. Roden, and P.F. Churchill. 1999. Changes in bacterial community structuree during freshwater biofilm development. American Society for Microbiology Annual Meeting, May 1999.

Weber, K.A. and E.E. Roden. 1999. Biologically-catalyzed nitrate-dependent oxidation of microbially-reduced Fe(III) oxides. American Society for Microbiology Annual Meeting, May 1999.

Sobolev, D. and E.E. Roden. 1999. Molecular characterization of microaerophilic autotrophic Fe(II)-oxidizing enrichment cultures growing at circumneutral pH. American Society for Microbiology Annual Meeting, May 1999.

M.R. Leonardo, F.G. Ferris, and E.E. Roden. 1999. Sr2+ immobilization by authigenic carbonate precipitation under iron-reducing conditions. American Society for Microbiology Annual Meeting, May 1999.

Roden, E.E. 1999. Modeling iron cycling and the influence of microbial iron oxide reduction on methane production in freshwater wetland sediments. American Society of Limnology and Oceanography Aquatic Sciences Meeting, February 1999.

Leonardo, M.R. F.G. Ferris, and E.E. Roden.  1998.  Analysis of iron-carbonate mineral formation during microbial reduction of synthetic amorphous iron oxide.  American Society for Microbiology Annual Meeting, May 1998.

May, T.M. and E.E. Roden.  1998.  3H-Leucine incorporation by Fe(III)-reducing bacteria.  American Society for Microbiology Annual Meeting, May 1998.

Roden, E.E. and M.M. Urrutia.  1998.  Microbial Fe(III) oxide reduction in open experimental systems.  American Society for Microbiology Annual Meeting, May 19998.

Sobolev, D. and E.E. Roden.  1998.  Iron-oxidizing bacteria in opposing gradients of ferrous iron and oxygen.  American Society for Microbiology Annual Meeting, May 1998.

Weber, K.A. and E.E. Roden.  1998.  Interaction of nitrate reduction and Fe(III) oxide reduction in freshwater wetland sediments.   Annual Water Resources Conference of the American Water Resources Association, October 1998.

Weber, K.A. and E.E. Roden.  1998.  Interaction of nitrate reduction and Fe(III) oxide reduction in freshwater wetland sediments.   American Society for Microbiology Annual Meeting, May 1998.

May, T.M. and E.E. Roden.  1998. Models of the activity and growth of Fe(III)-reducing bacteria.  Annual Water Resources Conference of the American Water Resources Association., October 1998.

Howell, R., R.J. Donahoe, and E.E. Roden.  1997.  Effects of microbial iron oxide reduction on pH and alkalinity in anaerobic bicarbonate-buffered media.  American Geophysical Union Fall Meeting, December 1997.

Roden, E.E. and M.M. Urrutia.  1997.  Microbial Fe(III) oxide reduction in aquatic sediments: new insights into control and significance in biogeochemical fluxes.  International Symposium on Environmental Biogeochemistry, October 1997.

Warren, L.A., F.G. Ferris, and E.E. Roden.  1997. Strontium reactions at Shewanella and hydrous ferric oxide surfaces.  Geological Society of America Annual Meeting, October 1997.

Roden, E.E. and R.G. Wetzel. 1997.  Iron oxide suppression of methane production in freshwater wetland sediments.  American Society for Limnology and Oceanography Aquatic Sciences Meeting, June 1997.

Urrutia, M.M. and E.E. Roden. 1997.  Growth parameters of Fe(III)-reducing bacteria on soluble and solid-phase Fe(III) oxides. American Society for Microbiology Annual Meeting, May 1997.

Coates, J.D., D.J. Ellis, E.L. Blunt-Harris, C.V. Gaw, E.E. Roden, and D.R. Lovley.  1997.  Recovery of humics-reducing bacteria from a diversity of environments.  American Society for Microbiology Annual Meeting, May 19997.

Urrutia, M.M., J.M. Zachara, and E.E. Roden. 1996.  Influence of Al oxides and clay minerals on bacterial Fe(III) oxide reduction in anaerobic environments.  Soil Science Society of America Annual Meeting, November 1996.

Roden, E.E. 1996. Rapid Fe cycling in freshwater wetland sediments.  American Society for Microbiology Annual Meeting, March 1996.

Urrutia, M.M., E.E. Roden, and J.M. Zachara. 1996.  Mechanisms of chelator stimulation of microbial Fe(III) oxide reduction.  American Society for Microbiology Annual Meeting, May 1996.

May, T. and E.E. Roden. 1996. Microbial iron cycling in freshwater wetland sediments.  Fourth Symposium on Biogeochemistry of Wetlands, March 1996.

Edmonds, J.W. and E.E. Roden. 1996. Relative influence of direct microbial Fe(III) oxide reduction vs. iron-sulfide mineral formation on phosphorus mobilization in freshwater wetland sediments.  Fourth Symposium on Biogeochemistry of Wetlands, March 1996.

Jones, S.C., R. Donahoe, and E.E. Roden. 1996. Iron and iron-reducing bacteria: their distribution within a freshwater riparian wetland system.  Fourth Symposium on Biogeochemistry of Wetlands, May 1996.

Roden, E.E and R.G. Wetzel. 1996. Fe(III) oxide regulation of methane production in freshwater wetland sediments.  Fourth Symposium on Biogeochemistry of Wetlands, March 1996.

Urrutia, M.M. E.E. Roden, and J.M. Zachara. 1995. Microbial and geochemical controls on dissimilatory Fe(III) reduction.  American Chemical Society, Industrial and Environmental Chemistry Division Special Session on Emerging Technologies in Hazardous Waste Management, October 1995.

Roden, E.E. and R.G. Wetzel. 1995. Regulation of methane flux from freshwater wetland sediments by competing anaerobic microbial processes.  International Association of Theoretical and Applied Limnology International Congress, July 1995.

Edmonds, J.W. and E.E. Roden.  1995. Relative influence of direct microbial Fe(III) oxide reduction vs. Fe-S mineral formation on phosphorus mobilization in freshwater wetland sediments.  American Society of Limnology and Oceanography Annual Summer Meeting, June 1995.

Roden, E.E. and R.G. Wetzel. 1995.  Regulation of methane production in freshwater wetland sediments by competing anaerobic microbial processes.  American Society of Limnology and Oceanography Annual Summer Meeting, June 1995.

Wen, M.H., C.R. Lange, F.J. Molz, and E.E. Roden. 1995. Multi-component reactive transport modeling in perched wetland soils.  American Geophysical Union Spring Meeting, April 1995.

Roden, E.E., J.M. Zachara, J.K. Fredrickson, and Y.A. Gorby. 1994. Reduction of synthetic and soil crystalline Fe(III) oxides by a dissimilatory Fe(III)-reducing bacterium.  American Society for Microbiology Annual Meeting, May 1994.

Roden, E.E. and D.R. Lovley. 1991. Iron diagenesis in surficial freshwater Potomac River sediments.  International Estuarine Research Federation Conference, October 1991.

Marvin, M.C., E.E. Roden, and D.G. Capone. 1991. Temporal and spatial variation in benthic microbial respiration in the mainstem of the Chesapeake Bay. American Society of Limnology and Oceanography Annual Meeting, February 1991.

Cornwell, J.C., E.E. Roden, P.A. Sampou, and D.G. Capone. 1990. Formation and distribution of iron sulfide minerals in Chesapeake Bay sediments.  Annual Meeting of the American Chemical Society, August 1990.

Roden, E.E. and J.H. Tuttle. 1990. Rapid turnover of inorganic sulfur in oligohaline Chesapeake Bay sediments.  American Geophysical Union Ocean Sciences Meeting, February 1990.

Tuttle, J.H., E.E. Roden, C.L. Divan, J.T. Bell, D.G. Cargo, and R.B. Jonas. 1988. Bacterial processes leading to the formation and maintenance of anoxia in Chesapeake Bay. American Geophysical Union Ocean Sciences Meeting, February 1988.

Roden, E.E. and J.H. Tuttle. 1988. Regional variation of sulfur cycling in Chesapeake Bay sediments.  American Geophysical Union Ocean Sciences Meeting, February 1988.

Roden, E.E. and J.H. Tuttle. 1987. Microbial sulfate reduction and carbon flow in mesohaline Chesapeake Bay sediments.  Annual Meeting of the American Society for Microbiology, May 1987.

 

Guest Lectures at Academic/Research Institutions:

“Linking microbial ecophysiology and phylogenetics: a case study on biogeochemical redox cycling of iron and nitrogen in anoxic sediments”, The University of Alabama, Department of Biological Sciences, October, 2003.

“Microbial nitrate-dependent oxidation of solid-phase Fe(II)”, Argonne National Laboratory, Division of Environmental Research, August 2003.

“Experimental and modeling analysis of Fe redox cycling kinetics and the influence of microbial Fe(III) oxide reduction on methane production in freshwater wetland sediments”, Auburn University, Department Civil Engineering, September 2002.

“Experimental and modeling analysis of Fe redox cycling kinetics and the influence of microbial Fe(III) oxide reduction on methane production in freshwater wetland sediments”, University of Florida, Department of Soil and Water Science, September 2002.

“Microbiological and geochemical controls on bacterial Fe(III) oxide reduction: links between surface chemistry and microbial ecophysiology”, Argonne National Laboratory, Division of Environmental Research, July 2002.

“Immobilization of strontium during iron biomineralization coupled to dissimilatory Fe(III) oxide reduction”, Idaho National Environmental Engineering Laboratory, April 2002.

“Microbiological and geochemical controls on bacterial Fe(III) oxide reduction: links between surface chemistry and microbial ecophysiology”, Department of Biological Sciences, University of Montana, April 2002.

“Mineral breathing microbes: bacterial Fe(III) oxide reduction in ancient and modern sedimentary environments”.  Auburn University, Department of Geology, September 2001.

“Microbiological and geochemical controls on bacterial Fe(III) oxide reduction: links between surface chemistry and microbial (eco)physiology”, Stanford University, Department of Geological and Environmental Sciences, April 2001.

“Microbiological and geochemical controls on bacterial Fe(III) oxide reduction: links between surface chemistry and microbial (eco)physiology”, University of New Mexico, Departments of Biology  and Earth and Planetary Sciences, April 2001.

“Relief for wetland gas production: interactions between Fe(III) oxide reduction and methanogenesis in freshwater wetland sediments”, Southern Illinois University, Department of Microbiology, November 2000.

“Mineral breathing microbes: bacterial Fe(III) oxide reduction in ancient and modern sedimentary environments”.  Summer Research Colloquium Program, Dauphin Island Sea Lab, June 2000.

“Microbial and geochemical controls on bacterial Fe(III) oxide reduction: links between surface chemistry and microbial physiology”.  University of Odense, Denmark, Danish Earth Sciences Center, June 2000.

“Microbial and geochemical controls on bacterial Fe(III) oxide reduction: links between surface chemistry and microbial physiology”.  University of Idaho, Department of Microbiology and Molecular Biology, April 2000.

“Relief for wetland gas production: interactions between Fe(III) oxide reduction and methanogenesis in freshwater wetland sediments”, Mississippi State University, Department of Biology, February 1999.

“Dynamics of Fe cycling in freshwater aquatic sediments: oxidative vs. reductive kinetics”, UFZ Centre for Environmental Research, Department of Inland Water Research Magdeburg, Magdeburg, Germany, June 1998.

“Competitive interactions between Fe(III) oxide reduction and methanogenesis in freshwater wetland sediments”, University of Alabama at Birmingham, Department of Biology, May 1998.

“Microbial and geochemical controls on dissimilatory Fe(III) oxide reduction”, University of Wyoming, Department of Geosciences, April 1998.

“Dynamics of Fe cycling in freshwater aquatic sediments: oxidative vs. reductive kinetics”, Skidaway Institute of Oceanography, February 1998.

“Dynamics of Fe cycling in freshwater aquatic sediments: oxidative vs. reductive kinetics”, Georgia Institute of Technology, School of Earth and Atmospheric Sciences, February 1998.

“Relief for wetland gas production: iron oxide suppression of methane production in freshwater wetland sediments”, Lebanon Valley College, Department of Biology, March 1997.

“Relative influence of direct microbial Fe(III) oxide reduction vs. Fe-S mineral formation on phosphate mobilization in anaerobic sediments”, Allegheny College, Departments of Biology and Environmental Sciences, October 1995.

“Phosphate mobilization in anaerobic wetland sediments: microbial Fe(III) oxide reduction vs. Fe-S mineral formation”, University of Mississippi, Department of Biology, October 1995.

“Microbial Fe(III) oxide reduction in anaerobic sediments and culture”, Tulane University, Department of Ecology, Evolution and Organismal Biology, March 1995.

“Microbial Fe(III) oxide reduction: controls and environmental significance. The University of Alabama, Department of Biological Sciences, February, 1995.

“Microbial Fe(III) oxide reduction in anaerobic sediments and culture”, Dauphin Island Sea Laboratory, April 1994.

“Sulfur cycling in Chesapeake Bay sediments”, Lamar University, Department of Biology, February 1994.

“Sulfur cycling in Chesapeake Bay sediments”, Florida State University, Department of Oceanography, November 1993.