Gsell, Timothy

Invited Presentations:

• GSU Promotion to Full Professor Presentation: 2009
• GSU Honors Program Seminar Series. Human Genome Project. 2007.
• Third World Conference GSU-CAS. Bioterrorism: An Historical Perspective. Chicago, Spring 2005-2006.
• The Endosymbiont Theory, Genomics, and Beyond.  GSU Honors Program Seminar Series. 2005-2006. 
• Third World Conference GSU-CAS. The Other Bioterrorism: Attacks on The Agricultural Sector, Chicago, Spring 2004.
• Health Science and Medical Conference at GSU, West Nile Virus: Impact on Illinois and Its Spread West. Fall 2003.
• Third World Conference GSU-CAS. Sustainability and the Impact of Disease and Worldwide Epidemics. Chicago, Spring 2003.
• CTI Teaching with Technology Grant Presentation to Committee and University, for DNA electrophoresis gel analysis software. GelCompare II (Applied Maths) DNA fingerprint pattern recognition and comparison, Fall 2003.
• Fall Semester Seminar Series, College of DuPage, Microbial Ecology Research: A Polyphasic Approach, Winter 2002
• Department of Biology Seminar Series, the University of Dayton, Quantitative and Qualitative Analysis of Microbial Populations: from Delmarva to Japanese Sewage, Fall 2000.
• Division of Biological Sciences Seminar, The University of Montana, Microbial Community Activity in Groundwater Discharge Zone Sediments of an Alkaline Fen, Fall 1997.
• Agouron Institute Seminar Series, Agouron Institute, La Jolla, California, Nutrient Limitation of Bacterial Growth in Alkaline Fen Discharge Zone Sediments, Spring 1995.

Published Abstracts and Research Symposium Presentations:

• Gsell, T.C.,. M. A. Sandstrom T. E. Sippel. 2010.  Monitoring Succession of Coliform and Pathogen Levels During Agricultural Composting.  Proceedings of the American Society for Microbiology 110th General Meeting, San Diego CA. p. 190.
• Gsell, T.C., P.S. Guimond and G.L. Lyon. 2009.  Undergraduate Coursework Enhancement Using Modern Culture and Molecular-based Instrumentation. Proceedings of the American Society for Microbiology 109th General Meeting, Philadelphia PA. p. 182.
• Emme, S. La Point, A and T.C. Gsell. 2009. Characterizing Ammonia-Oxidizing Bacterial Diversity in Various Shedd Aquarium Marine and Freshwater Tank Filtration Systems. Proceedings of the American Society for Microbiology 109th General Meeting, Philadelphia PA. p. 155.
• Gsell, T.C., M.L. Smits. 2008.  Comparison of Seasonal Bacterial Abundance, Diversity and Community Structure Between Macrophyte and Bacterioplankton Dominated Retention Ponds of Differing Stable States.  American Society for Microbiology 108th General Meeting, Boston MA p. 95.
• Gsell, T.C., V. Rivera-Carraro. 2007.  Assessment of Microbial Populations in Heavy Metal Polluted Freshwater Sediment from the North Fork of the Chicago River Proceedings of the American Society for Microbiology 107th General Meeting, Toronto, Canada. p. 180.
• Gsell, T.C., J.W. Fitzgerald, and M. J. Daley. 2006.  Antibiotic Resistance Patterns in Fecal Coliforms in a Human Biosolid Runoff Zone in the Headwaters of Thorn Creek. Proceedings of the International Symposium on Microbial Ecology-11. Vienna, Austria. p. 53.
• Gsell, T.C., W.E. Holben, and B.J. Cook. 2005.  Ammonia Oxidizer Diversity and Nutrient Selection in Depressional Prairie Wetlands in Northwestern Montana. Proceedings of the American Society for Microbiology 105th General Meeting, Atlanta, GA. p. 70.
• J. W. Fitzgerald, M. J. Daley and T. C. Gsell. 2005.  Microbial Abundance and Antibiotic Resistance Patterns for a Bio-solid Runoff Zone in Thorn Creek. Proceedings of the Illinois State Academy of Sciences 97th Annual Meeting, Knox College, Galesburg Illinois.
• Gsell, T.C., and W.E. Holben. 2004. Characterizing Bacterial Diversity and Ammonia Oxidizer Phylogeny in Aquifer Sediments Along a Northwestern Montana Floodplain. Proceedings of the American Society for Microbiology 104th General Meeting, New Orleans, LA.
• Gunther, P.P., Emme, S., and T. C. Gsell. 2003.  A Chemical Gradient Technique for Investigating the Effects of Organic and Inorganic Substances on Seed Germination. Proceedings of the Illinois State Academy of Sciences 95th Annual Meeting, Illinois State University, Normal Illinois.
• Gsell, T.C., and W.E. Holben. 2001.  The Effect of in situ Iron-oxyhydroxide Removal on Bacterial Transport in Two Iron-rich Intact Cores. Proceedings of the International Symposium on Microbial Ecology-9, Amsterdam, The Netherlands. P. 218.
• Gsell, T.C. and W.E. Holben. 1999.  Characterizing Ammonia-Oxidizing Bacterial Diversity in Different Agricultural Sites. Proceedings of the American Society for Microbiology 99th General Meeting, Chicago, IL.
• Kovacik, W.P., T.C. Gsell, and W.E. Holben. 1999.  Development of a Quantitative RCR (qPCR) Approach for Monitoring Bacterial Transport in Subsurface Environments. Proceedings of the American Society for Microbiology 99th General Meeting, Chicago, IL.
• Ball, P.N., W.E. Holben, W.W. Woessner, T.C. Gsell, and D.C. DeBorde. 1999.  Assessing Mass Balance of Transported Bacteriophage in a Septic Flow Field. Proceedings of the American Society for Microbiology 99th General Meeting, Chicago, IL.
• Gsell, T. C., Y. Suwa, K. Noto and W. E. Holben. 1998. Characterizing Ammonia-Oxidizing Bacterial Diversity in Different Sewage Treatment Systems. Proceedings of the International Symposium on Microbial Ecology-8, Halifax, Nova Scotia. p. 167.
• Gsell, T.C., J.K. Fredrickson and W.E. Holben. 1998. The Effect of in situ Iron-Oxyhydroxide Removal On Bacterial Transport in Intact Cores from Shallow Aquifer Sediments. Proceedings of the American Society for Microbiology 98th General Meeting, Atlanta, GA.
• Holben, W.E., W.P. Kovacik and T.C. Gsell. 1998. Monitoring Bacterial Transport in Porous Media: A Comparison of Multiple Detection Strategies. Proceedings of the American Society for Microbiology 98th General Meeting, Atlanta, GA.
• Gsell, T.C. and W.E. Holben. 1997. Maintaining Microbial Viability and Diversity in Environmental Samples: Comparison of On-Site Sample Processing with Cryopreservation. Proceedings of the American Society for Microbiology 97th General Meeting, Miami, FL.
• Gsell, T.C., L. Lancaster, A. Mills and W.E. Holben. 1996. Heterogeneity of Microbial Activity and Viability Contrasts with Biomass Homogeneity in Shallow Aquifer Sediments, Proceedings of the American Society for Microbiology 96th General Meeting, New Orleans, LA.
• Gsell, T.C. and R.M. Ventullo. 1994. Microbial Community Activity in Groundwater Discharge Zone Sediments of an Alkaline Fen: A Seasonal Study. Proceedings of the American Society for Microbiology 94th General Meeting, Las Vegas, NV.
• Gsell, T.C. and R.M. Ventullo. 1993. Nutrient Limitation of Bacterial Growth in Alkaline Fen Discharge Zone Sediments. Proceedings of the American Society for Limnology and Oceanography & The Society of Wetland Scientists Annual Meetings, Edmonton, Alberta, Canada.
• Gsell, T.C., C. Tansky and R.M. Ventullo. 1992. Bacterial Growth in Alkaline Wetland Discharge Zones. Proceedings of the American Society for Microbiology 92nd General Meeting, New Orleans, LA.
• Gsell, T.C. and B.F. Giffin. 1990. A Possible Role for Polyamines in the Regulation of Transformation in the African Trypanosome. Proceeding of the First Regional Meeting of the American Society of Cell Biology, Chicago, IL. p. 30.