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Ver términos de la licenciaPrario, Maria I., et al. (2024). Seasonal distribution of bacteria of fecal origin in a recreational beach of the Atlantic coast of Argentina. Revista Internacional de Contaminación Ambiental; Vol. 40, 2024; 341-350. Recuperado de https://repositorio.unam.mx/contenidos/4160523
Autor(es)
Prario, Maria I.; Lucero, Marcelo; Saicha, Ana V.; Patat, Maria L.; Espinosa, Mónica B.; Cecchi, Federico A.
Tipo
Artículo de Investigación
Área del conocimiento
Biología y Química
Título
Seasonal distribution of bacteria of fecal origin in a recreational beach of the Atlantic coast of Argentina
Fecha
2024-10-29
Resumen
In 2018, the concentrations and distribution of two indicators of fecal contamination were evaluated on a recreational beach located on the Atlantic coast of Argentina. The presence of Escherichia coli and Enterococcus spp. in samples of dry sand, wet sediments, and seawater was determined using the filter membrane technique by periodic monitoring considering the abundance of rain in previous days and ambient temperature values (maximum and minimum). Samples were analyzed according to the date of collection (summer season; winter season). In order to identify the origin of the selected indicators, the ratio E. coli /Enterococci (EC/ENT) was used. The concentration values of both indicators did not show significant differences between seasons and collection sites, with the exception of E. coli, with a higher concentration in the water during the summer period. In turn, the maximum abundance of both was identified in the summer months and in the three sites sampled. On the other hand, 58 % of the samples analyzed exceeded the admissible reference limits. When analyzing the origin of the contamination, a composition of mixed origin (animal and anthropic) was observed in both seasons. The colonies of EC and ENT persisted throughout the year, with sand being their best reservoir, while the environmental factors considered did not affect the distribution of these bacteria. The prevalence of their colony forming units (CFU), above the recommended levels and occurring in the intensive use period, would characterize this sector as a sanitary risk during the evaluated season.
Tema
contaminación fecal; arena; agua de mar; temporada estival e invernal; distribución temporal
Idioma
spa
ISSN
ISSN impreso: 0188-4999
