ABSTRACT
RESUMEN Objetivo: Determinar los valores de la bacteria e indicador fecal Escherichia coli (EC) para aguas de mar de uso seguro y recreacional de la playa Pucusana, Lima. Materiales y Métodos: Las campañas de muestreos se realizaron una vez por semana en el estío del 2019 y fueron procesados en el Laboratorio de Microbiología de la FCB de la Universidad Ricardo Palma mediante colimetría y el método del número más probable (NMP). Resultados: Se comprobó la presencia de EC en todas las muestras analizadas, con valores promedio superiores a 1000 NMP/100 ml. en todas las muestras recogidas. Diez cepas fueron enviadas al INS que determinó que no existe ningún serotipo patogénico, y de acuerdo con regulación peruana la calificación es inaceptable. Conclusiones: Se demuestra la carencia de salubridad ambiental y su relevancia en salud pública. Los factores de riesgo son producidos principalmente por la producción y vertido de las aguas residuales llevados por los colectores al mar y aunque una importante proporción de estas aguas son procesadas en la Planta de Tratamiento de Aguas Residuales PTAR Pucusana se identificaron vertimientos domésticos y municipales que descargan al Pacífico, problemática que debe tener un buen manejo y fiscalización ambiental porque deteriora el medio ambiente sobre todo los mares.
ABSTRACT Objective: To determine the values o f the bacteria and fecal indicator Escherichia coli (EC) for seawater of safe and recreational use of the Pucusana beach, Lima. Materials and Methods: The campaigns of samplings were carried out once a week in the summer of 2019 and were processed in the microbiology laboratory of the Faculty of Biological Sciences (FCB) of the Ricardo Palma University using colimetry and the method of the most probable number (NMP). Results: The presence of EC was verified in all the analyzed samples, with average values higher than 1000 MPN/100 ml. in all collected samples. Conclusions: The lack of environmental health and its relevance in public health is demonstrated. The risk factors are produced mainly by the production and discharge of wastewater. residuals carried by the collectors to the sea and although an important proportion of these waters are processed at the PTAR Pucusana Wastewater Treatment Plant. Domestic and municipal discharges that discharge into the Pacific were identified, a problem that must have good management and environmental control because it deteriorates the environment and the seas.
ABSTRACT
Abstract Aquaponics is a system that integrates aquaculture with plant production in which two species are benefited, and there is water saving. In this study was carried out with an aquaponic system to verify the interaction between the growth of the halophytes Batis maritime, Sarcocornia neei, and Sporobolus virginicus associated with white shrimp Litopenaeus vannamei rearing. We also investigated if there were different responses of physicochemical variables of the water in the experimental shrimp culture ponds integrated into the growth of plants and control ponds, without plants, throughout a 56-day period. The treatment experiment and control presented a statistically significant difference in total dissolved solids, salinity, total suspended solids, ammonia, orthophosphate, and nitrite. In the experimental treatment, with the presence of plants and recirculating water, a reduction of total suspended solids, ammonia and orthophosphate was observed. The rate of shrimp production was not significantly different between treatments, and the performance was similar to that of other studies. The biomass gain of the halophyte B. maritima was 876.6 grams in 0.5 m² and of S. neei was 48.8 grams in 0.16 m². All plants of the species S. virginicus died during the experiment.