SCIENCE AT THE EDGE SEMINAR QB/GEDD Friday, February 15 at 11:30am Room 1400 Biomedical and Physical Sciences Bldg. Refreshments at 11:15 David Bortz Department of Applied Mathematics University of Colorado at Boulder Biomechanics and Population Dynamics of Microbial Communities Multicellular microbial communities in suspension and on surfaces are ubiquitous from the laboratory to the ocean, and yet the nature and dynamics of those populations are still not well understood. Their biomechanical and biochemical properties have a large impact on human life - from controlling sepsis, to wastewater management, to biofuel production. While there are macro-scale, descriptive models, our current understanding of how multi-cellular colonies form, grow, fragment, and disseminate is still in its infancy. Motivated by this biological phenomena, our research has focused on mathematical models for the microscale biomechanics. In this talk, I will present some recent results related to accurately predicting flow-induced fragmentation and adhesion of microbial communities as well as the impact on their population dynamics. Helen Geiger, Administrative Assistant Quantitative Biology Graduate Program and Gene Expression in Development and Disease Biochemistry 603 Wilson Road, Room 212 East Lansing, MI 48824 Email: [log in to unmask] Phone: 517-432-9895 QB Website: http://www.qbi.msu.edu/ GEDD Website: http://www.gedd.msu.edu/