Wastewater continuously affects lacustrine ecosystems, such is the case of Lake Titicaca, the highest navigable lake in the world. To assess this impact, the concentration of heavy metals in water and sediment samples, physicochemical parameters, and the diversity of phytoplankton were evaluated in locations near the wastewater effluent. With the data on heavy metals in sediments, the Individual Potential Risk Factor Index (Eri) was assessed and the analysis of Potential Ecological Risk was conducted (PERI). The results revealed that pH, BOD5, NAMO and Phosphorus exceeded the limits established by Peruvian law. Additionally, we identified 14 metal elements in surface water samples; with a positive correlation between these metals and the sampling point (4), as well as total suspended solids (TSS). In the sediment samples, 35 different metal elements were detected. Specifically, point 4 s...

Wastewater continuously affects lacustrine ecosystems, such is the case of Lake Titicaca, the highest navigable lake in the world. To assess this impact, the concentration of heavy metals in water and sediment samples, physicochemical parameters, and the diversity of phytoplankton were evaluated in locations near the wastewater effluent. With the data on heavy metals in sediments, the Individual Potential Risk Factor Index (Eri) was assessed and the analysis of Potential Ecological Risk was conducted (PERI). The results revealed that pH, BOD5, NAMO and Phosphorus exceeded the limits established by Peruvian law. Additionally, we identified 14 metal elements in surface water samples; with a positive correlation between these metals and the sampling point (4), as well as total suspended solids (TSS). In the sediment samples, 35 different metal elements were detected. Specifically, point 4 s...

The concentrations of antibiotic residues in aquatic ecosystems are experiencing a progressive increase, which is exerting significant impacts on resident species. The species Lemna gibba and Azolla filiculoides are widely known in studies of toxicity and phytoremediation. Furthermore, these species have been observed to exhibit interesting responses to exposure to antibiotic compounds. In this study, the effects of azithromycin, ciprofloxacin, amoxicillin, cephalexin, ampicillin, and clindamycin (0.00, 2.5, 5, 7.5 mg/L) on biomass, Relative Growth Rate (RGR), percentage of area, and chlorophyll were evaluated over a period of 7 days. Biomass data were collected to calculate RGR, and daily images of each experimental unit were captured to estimate the percentage of area coverage and RGB bands for chlorophyll calculation purposes. The results revealed toxic effects of the concentrations c...

The concentrations of antibiotic residues in aquatic ecosystems are experiencing a progressive increase, which is exerting significant impacts on resident species. The species Lemna gibba and Azolla filiculoides are widely known in studies of toxicity and phytoremediation. Furthermore, these species have been observed to exhibit interesting responses to exposure to antibiotic compounds. In this study, the effects of azithromycin, ciprofloxacin, amoxicillin, cephalexin, ampicillin, and clindamycin (0.00, 2.5, 5, 7.5 mg/L) on biomass, Relative Growth Rate (RGR), percentage of area, and chlorophyll were evaluated over a period of 7 days. Biomass data were collected to calculate RGR, and daily images of each experimental unit were captured to estimate the percentage of area coverage and RGB bands for chlorophyll calculation purposes. The results revealed toxic effects of the concentrations c...

Los arroyos urbanos están siendo cada vez más afectados por centros poblados, debido a la carencia de sistemas de tratamiento de sus aguas residuales. Por ello, se evaluó el impacto del poblado Salcedo en las características fisicoquímicas y bacteriológicas de las aguas del arroyo Ranchopunko que lo atraviesa. Para ello se establecieron tres estaciones de muestreo: curso alto del río sin influencia urbana (estación 1), sección que atraviesa el centro urbano (estación 2) y desembocadura en el lago Titicaca (estación 3), evaluando los principales parámetros fisicoquímicos y bacteriológicos, en un total de 36 muestras durante los meses de octubre, noviembre y diciembre, con cuyos datos se calculó también el índice simplificado de calidad de agua. A diferencia de la estación 1, la mayoría de parámetros de las estaciones 2 y 3 no cumplieron los estándares de calidad ambie...