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[Bacterial pollution of the lagoon of Tunis].

The authors present in this paper a study about the bacterian pollution of the lagoon of Tunis based on 120 samples collected in 10 different stations. This study points out that the lagoon is polluted (50.8% of the samples) mostly in autumn and in winter. The pollution is exogenous, chiefly caused by the rain spreading over polluted waters of wastes and of rivers, and also by the action of the winds and of the currents on the sediments hosting microbiological parameters of faecal pollution.