Bacterial interactions at organic matter hotspots in the sea
Steven Smriga, Ph.D.
Massachusetts Institute of Technology
4:25-5:20 pm Tuesday, March 4, 2014
2211 Centennial Hall
Bacterial Physiologist Candidate Seminar
Seminar is open to students, faculty, staff
In the ocean, nutrient and carbon resources exist as patches distributed heterogeneously at scales of meters down to nanometers. Marine bacteria harbor biochemical and physical adaptations to utilize these 'hotspots' as resources for maintenance and growth. Using results from a combination of microscopy, molecular methods, and microfluidics, this talk will describe interactions between bacteria and 'hotspots' of organic matter including phytoplankton and fecal pellets from fish. It will also describe an approach for quantifying bacterial growth activity at the single cell level and how application of this technique may help to elucidate microbial growth behavior on organic particles. Together, the results provide insight into how microscale interactions can scale up to influence ecosystem-wide biogeochemical dynamics in aquatic environments.
Friday, April 25, 2014
Radisson Center, La Crosse
Details coming soon.