Abstract

The presence and survival of Staphylococcus aureus as well as its correlation with faecal pollution indicators was studied in the coastal area of the town of Split during the summer. Staphylococcus aureus was permanently or occasionally present at all sites studied. Survival of S. aureus was statistically significantly longer than that of faecal pollution indicators under both light and dark conditions. Strong correlation between S. aureus and indicators was established in highly polluted areas. In the areas under weak and/or occasional influence of waste waters, low concentrations of faecal pollution indicators are frequently accompanied by relatively high concentrations of S. aureus. This is due to shedding by bathers themselves and/or the longer survival time of S. aureus in comparison to faecal indicators. The effect of solar radiation, temperature, salinity and predation on the survival of S. aureus was examined using two-level factorial experiments. Solar radiation and temperature were the most important factors controlling the survival of S. aureus in seawater.

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