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Fig. 1. Survival of Escherichia coli in sterile beach sand and water (colony-forming units [CFU] kg–1 sand or CFU L–1) over a range of salinities at 30°C. Solid symbols represent sand; open symbols represent water. Shapes correspond to salinity: diamond, 6 practical salinity units [PSU]; square, 15 PSU; triangle, 32 PSU; circle, 38.5 PSU. Error bars represent 1 SE (n = 3).
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