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SUMMARY:Marine Microfluidics: Chemotaxis and Gyrotaxis in the Ocean - Roma
 n Stocker\, MIT
DTSTART:20110322T130000Z
DTEND:20110322T140000Z
UID:TALK30388@talks.cam.ac.uk
CONTACT:Raymond E. Goldstein
DESCRIPTION:It is now widely recognized that microbial activities represen
 t one of the main forces shaping biogeochemistry and productivity in the o
 cean. At the level of individual microbes\, the ocean is a sea of gradient
 s. Chemical gradients define heterogeneous resource landscapes\, while flo
 w gradients exert forces and torques on organisms. Our understanding of th
 ese interactions - both chemical and fluid mechanical - has been hampered 
 by the difficulty of studying microbial behavior at appropriate spatiotemp
 oral scales. Modern microfluidic and millifluidic tools afford unprecedent
 ed access to this microscale world. I will show how these approaches can h
 elp shed light on microbial  behavior in both resource gradients (chemotax
 is) and flow gradients (gyrotaxis). 
LOCATION:MR5\,  Centre for Mathematical Sciences\, Wilberforce Road\, Camb
 ridge
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