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SUMMARY:High resolution monitoring of microbial dynamics in aquatic ecosys
 tems
DTSTART:20151124T121500
DTEND:20151124T130000
DTSTAMP:20260924T175012Z
UID:7531474b179d2cfefeaaa92fc777ec6357f208ce6a2ff63c241d88c1
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Frederik Hammes\, Environmental Microbiology\, EAWAG Dueben
 dorf\nAbstract:\nAccurate monitoring of microbial dynamics in engineered a
 nd environmental aquatic ecosystems is critical for a better understanding
  of the causes and consequences of microbiological changes. However\, the 
 common practice of infrequent grab-sampling and measurements with outdated
  methodology hampers sensible characterization of such dynamics. In this p
 resentation I will discuss new approaches and methods to characterize temp
 oral fluctuations in the microbiomes of complex systems. (1) In a first ex
 ample\, we tracked microbiological changes in a Dutch drinking water syste
 m bi-weekly during 2 years with a complete set of microbiological tools. W
 e demonstrated dramatic seasonal fluctuations in bacterial cell concentrat
 ions\, partially governed by changes in water temperature. This enabled th
 e establishment of a dynamic baseline that can be used to predict bacteria
 l concentrations and detect abnormal events in the drinking water system. 
 (2) In a second example\, we implemented newly developed fully automated o
 nline flow cytometry to monitor changes in groundwater aquifers used for d
 rinking water at 15 minute resolution during multiple months. With these l
 arge data sets we could accurately describe and quantify both natural even
 ts (e.g.\, rainfall) and man-made events (e.g.\, water extraction)\, which
  influenced the microbial dynamics and which would be missed by grab sampl
 ing. This demonstrates the need for\, and progress towards\, automated onl
 ine microbiological monitoring technologies.Short biography:\nFrederik Ham
 mes is a senior researcher and group leader of the Drinking Water Microbio
 logy group at the Swiss Federal Institute of Aquatic Science and Technolog
 y (Eawag). His group’s research focuses on the microbial ecology and dyn
 amics of drinking water treatment and distribution systems from source-to-
 tap\, with specialization in advanced/alternative single-cell detection me
 thods. He is the author/co-author of 60 peer-reviewed publications.
LOCATION:GR C0 01 (NEW) http://plan.epfl.ch/?room=GR%20C0%2001
STATUS:CONFIRMED
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