
handle: 10261/150000
[EN] A study on the disappearence of fecal bacterial pollution in coastal waters off Barcelona, in relationship to several environmental factors, is presented in this paper. Theorical estimates of the bacterial concentrations at different distances from the point of discharge of the effluent, have been calculated (talking account of the dilution factor) and, compared with the real values found. Streptococcus foecalis presented a special sensibility in front of high water temperature. Microbial pollution tends to decrease when a zooplanktonic population is present. [...] Salmonella paratyfi B, Escherichia coli, E. aerogenes, S. enteritidis, St. foecalis, Candida albicans, Staphylococcus, Proteus, Enterobacter [...]
[ES] Las zonas del litoral relacionadas directa o indirectamente con núcleos urbanos, presentan una contaminación cuya intensidad es función de la densidad humana y del tipo de actividad industrial predominante en la zona. En líneas generales pueden hacerse dos grandes grupos de polutantes: los industriales (hidrocarburos, sustancias químicas tóxicas, compuestos clorados, calor, etc.) y los domésticos (detergentes, bacterias heterotrofas, gérmenes patógenos, etc.). En realidad, sólo en casos excepcionales puede encontrarse una separación neta entre zonas contaminadas por uno u otro, lo común es que exista una mezcla de ambos, lo que hace mucho más difícil su estudio. [...]
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