From this page you can get a description of our current activities, get a listing of recent  publications and 
link other USGS sites. 


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visits since Aug, 1997.

Last Update 01/24/03
Research Information
Coupled Field and Laboratory Experiments are a Cornerstone of this Work
Information about subsurface microbiology Click on picture for further information

We have concentrated on iterative lab and field experiments (figure above) to investigate the multifaceted factors  associated with microbial (protozoa-virus-bacteria) transport in the subsurface and how geochemistry affects them.  The illustrations below describe what may be going on at the microbial level.   Click on either to see a larger picture.
Protists Can Affect Subsuface Bacterial Populations
 Physical Factors Help Alter Subsurface Bacterial Populations

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