Wayne Wurtsbaugh
Registered: January 2000
Posts: 511
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Students taking a sediment core from Bull Trout Lake in the Sawtooth Mountains, Idaho. A simple PVC plastic pipe pushed into the sediments and then capped can be used to extract cores in shallow environments. The work shown here was done to assess the relative amount of nitrogen-15 uptake by the biofilm community and that in the phytoplankton. The benthic biofilm takes up far more nutrients than the more commonly studied plankton community
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