Abstract
We collected cobbles covered in biofilm from High Ore Creek, Montana, placed them in 12 transparent PVC plastic chambers, and exposed the chambers to four treatments: Sunlight, Sunlight-occluded, DCMU (photosynthesis inhibited), and Formalin. Total aqueous zinc (Zn) concentrations in the Sunlight treatment decreased during the 4-h experiment and were significantly lower (P ≤ 0.05) than in the other three treatments, in which the total aqueous Zn concentrations did not decrease significantly. Therefore, we believe photosynthesis in the biofilm played a role in causing total aqueous Zn concentrations in the Sunlight treatment to decrease, and we believe a similar process contributes to diel Zn cycling in High Ore Creek and some other metals-contaminated streams.
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Morris, J.M., Meyer, J.S. Photosynthetically Mediated Zn Removal from the Water Column in High Ore Creek, Montana. Water Air Soil Pollut 179, 391–395 (2007). https://doi.org/10.1007/s11270-006-9232-9
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DOI: https://doi.org/10.1007/s11270-006-9232-9