Results of a 54.5-Hour Field Experiment on the Banks of High Ore Creek

Results of a 54.5-hour field experiment on the banks of High Ore Creek, Mont., conducted in August 2002. Biofilm material grown in a laboratory without exposure to zinc was added to a streamside aquarium. Filtered stream water was then pumped through the aquarium, and the aquarium was exposed to natural sunlight. The graph shows zinc concentrations measured in water (red triangles) and the biofilm (blue circles) in the aquarium. The graph is a modified version of figure 3 from Morris and others, 2005.