ESTUDIOS BACTERIOLÓGICOS EN LA CIÉNAGA GRANDE DE SANTA MARTA, COLOMBIA
Among the aquatic bacteria of the Ciénaga Grande halophilic forms predominate in the salinity range of brackish* water. Their number further rises while the salinity decreases during the rainy season. Only at salinities below 10 %o, however, the fresh water bacteria increase. They reach a temporary maximum at about 3 %o salinity. At the same time the halophilic flora decreases. Using the intestinal bacterium Escherichia coli as indicator, a certain degree of pollution can be detected near the fishing-villages, rarely in the rest of the lagoon. 100 oysters (Crassostrea rhizoforae) were examined for Salmonellas and gave negative results. 4 out of 6 water samples collected between the lakedwellings of Bocas de Aracataca contained Salmonellas. The present degree of pollution of the Ciénaga Grande is not alarming with respect to oyster fishery.
LAGUNAS COSTERAS; ESTUARIOS; CONTAMINACION POR MICROBIOS; ANALISIS MICROBIOLOGICO; BACTERIA; CIENAGA GRANDE DE SANTA MARTA; COLOMBIA; CARIBE
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