Selected Invited Lectures


  • "A Renaissance of Nitrogen Fixation Research." Granting Agency Conference at the Department of Microbiology, University of Helsinki, Helsinki, Finland. December 1983.

  • "Carbon Substrate Metabolism in Rhizobia." Symposium on Symbiotic Nitrogen Fixation sponsored by Allied Corporation, Syracuse, New York. June 1985.

  • "Carbon Substrate Metabolism Relative to the Ecology, Survival and Competition in Rhizobia." 6th International Symposium on Nitrogen Fixation, Corvallis, Oregon. August 1985.

  • "2089: Biological Science and Biotechnology in the Future." Three-lecture series delivered at Pittsburg State University, Pittsburg, Kansas. 14 - 16 June 1989.

  • "Validation of Protocols for Assessing the Effectiveness of Commercial Bioremediation Agents for Oil Spills Using Open-Water Test Systems." Presented at U. S. EPA, United States of America--Israel Bioremediation Workshop, Nahsholim, Israel. 11 November 1992.

  • "Potential for Bioremediation of Oil-Contaminated Environments." Presented to Florida Independent Petroleum Producers' Association, Annual Meeting, Perdido Key, Florida. 24 September 1993.

  • "Effectiveness and Safety of Strategies for Oil Spill Bioremediation: Potential and Limitation." Presented at the U. S. Environmental Protection Agency's Annual Symposium on Bioremediation of Hazardous Wastes: Research, Development and Field Evaluations, San Francisco, California. 27 - 30 June 1994.

  • "Assessing Safety and Effectiveness of Oil Spill Bioremediation Strategies." Special Seminar: Presented to visiting Japanese scientists from the University of Tokyo and from Mitsubishi at the Gulf Ecology Division of U. S. EPA; Gulf Breeze, Florida; 13 November 1996.

  • "Alternative Endpoints for Assessing Bioremediation Success: Special Considerations for Wetlands Ecosystems." Presented at the "Oil Spills in Coastal Marsh Ecosystems" workshop. Sponsored by the Louisiana Environmental Research Center, McNeese State University; 6 - 7 June 1996, Lake Charles, Louisiana.

  • "Effectiveness and Relative Toxicity of Biosurfactants." Presented at the "Oil Spills in Coastal Marsh Ecosystems" workshop. Sponsored by the Louisiana Environmental Research Center, McNeese State University; 6 - 7 June 1996, Lake Charles, Louisiana.

  • "Effectiveness and Safety of Biosurfactants as Agents in Oil Spill Response." Presented to the 1997 International Oil Spill Conference. Ft. Lauderdale, Florida. 7 - 10 April 1997.

  • "Role of Wetlands Microorganisms in Biogeochemical Cycling." Presented to the Escambia County League of Women Voters conference on Wetlands. Molino, Florida. 15 November 1997.

  • "Environmental Impact of Effluent from the Champion International Paper Mill." Presented to the Bay Area Resource Council; Pensacola, Florida. July 1998.

  • "Biodegradation of Polycyclic Aromatic Hydrocarbons (PAH) from Crude Oil in Sandy-Beach Microcosms." Invited Biodegradation Symposium speaker, 8th International Symposium on Microbial Ecology. Halifax, Nova Scotia, Canada. 9 - 14 August 1998.

  • "Effectiveness and Safety of Bioremediation Strategies for Oil Spills in Open-Water and on Sandy Beaches." Pensacola Bay System 2nd Annual Technical Symposium of the Bay Area Resource Council; Pensacola, Florida, 11 September 1998.

  • "Unconventional Patterns in the Biodegradation of Crude Oil by Indigenous Microbial Flora" presented to the Florida Association of Environmental Professionals, Northwest Chapter. 12 November 1999.

  • "Stormwater Runoff Issues and Solutions." Presented to the Santa Rosa County Stormwater Runoff Task Force. March 2000.