Prevalence of indicator and pathogenic bacteria in a tropical river of Western Ghats, India

Vincy, M. V.; Brilliant, R.; Pradeepkumar, A.P.

doi:10.1007/s13201-015-0296-9

Cited by 17 publications

(8 citation statements)

References 38 publications

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“…The VI sampling point is located at a city park, a popular site for recreation for the citizens and tourists. Some authors (e.g., Korzeniewska 2005 , Edge and Hill 2007 , Wright et al 2009 ; Kacar 2011 ; Daly et al 2013 ; Garcıa-Armisen et al 2014 ; Vincy et al 2015 ) reported that the contamination of public recreational places with fecal bacteria was mainly caused by pet animals’ feces. In this study, only the samples collected at stations I–IV were within the contamination limits recommended by the Bathing Water Directive ( 2006 /7/EC) for recreational waters (<0.5 × 10 3 CFU 100 mL −1 ).…”

Section: Resultsmentioning

confidence: 99%

The impact of urban areas on the water quality gradient along a lowland river

Glińska-Lewczuk

Gołaś

Koć

et al. 2016

Environ Monit Assess

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The effects of five towns on river water pollution were examined along the Łyna River (southern watershed of the Baltic Sea, northern Poland). The relationships among the spatially derived indicators of urbanization, environmental variables, and physico-chemical and microbiological data (heterotrophic plate count at 22 and 37 °C, and fecal coli) obtained from longitudinal river profiling have been examined with the use of multivariate analyses such as principal component analysis with factor analysis (PCA/FA) and hierarchical cluster analysis (HCA). We recognized the river channel as an environmental path that links serial urban areas into an “urban river continuum.” An overall increasing trend in nutrients and indicator bacteria from suburban headwaters to urbanized sections of the river was detected despite a significant decrease in those between the towns. We concluded that the role of a multicity is equally as important as a single urban area in predicting the impacts of man-made pollutants on river water quality.

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Section: Resultsmentioning

confidence: 99%

The impact of urban areas on the water quality gradient along a lowland river

Glińska-Lewczuk

Gołaś

Koć

et al. 2016

Environ Monit Assess

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“…Phosphate concentration was derived from orthophosphate colorimetric measurement at 690 nm using the Stannous Chloride method (APHA et al, 1999). Concentrations of viable E. coli cells were estimated by a three-tube most probable number (MPN) method as described by Vincy et al (2015).…”

Section: Laboratory Methodsmentioning

confidence: 99%

Does Protection of Marine Areas Safeguard Coral Reefs From Human-Source Pollution?

Kaimba

Villiers

Wambua

2019

Front. Environ. Sci.

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Marine biodiversity is under increasing threat as the area covered by corals diminishes under pressure from climate change and human activities, most of which lead to marine pollution. In Kenya, marine protected areas (MPAs) are the key strategy used to protect coral reefs and biodiversity. However, MPAs' effectiveness to prevent pollution of the reefs has not been specifically assessed. We determined if the levels of surrogates of human-source pollution, i.e., E. coli and nutrient concentrations on Kenyan coral reefs, varied with increasing levels of marine protection at the Kilifi creek (least protection), Malindi Reserve (moderate protection), and Kuruwitu Conservancy (strictest protection). The most probable number (MPN) of E. coli was estimated by serial dilution while nitrate and orthophosphate concentrations were determined spectrophotometrically. As protection increased from "least," to "moderate" and "strictest," E. coli concentrations (MPN/100 mL) decreased from 29, to 16 and undetectable, while mean orthophosphate concentrations increased from 0.326, to 0.422 and 0.524 mg/L, respectively. Mean nitrate concentrations, on the other hand, showed no trend with protection. These results suggest the potential of marine protection to mitigate coral reef pollution, especially from microbes. They also point to the possibility that multiple sources of pollution exist on which marine protection may have little or no effect. Significantly, this pilot study points to the need for improved study design to definitively determine the role MPAs may play in protecting against pollution.

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“…The main consequence is that, waterborne diseases that cause mortality of population are difficult to prevent or to control. An example of the absence of surface water management program is the presence of faecal pathogenic microorganisms (bacteria, viruses and protozoa) in these tropical waters (Lu et al, 2016;Nshimyimana et al, 2013;Vincy et al, 2017). The detection and enumeration of all these pathogenic microorganisms potentially present is impossible due to the large diversity of the pathogens, low abundance of each species and absence of standardized and low-cost methods for the detection of each of them.…”

Section: Author(s) Agree That This Article Remain Permanently Open Acmentioning

confidence: 99%

Impact of faecal bacteria contamination on drinking water supply in Aghien Lagoon, Abidjan, Ivory Coast

Ouattara¹,

KouamÃ©²,

KamagatÃ³

et al. 2018

Afr. J. Microbiol. Res.

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In developing countries, urban surface waters are particularly affected by faecal pollution from domestic wastewaters due to the lack of sanitation and wastewater treatment plants. The presence of pathogenic microorganisms limits the uses of these waters for recreation and economic activities. In Ivory Coast, due to the important gap between water demand and water supply in urban areas, use of surface waters for the production of drinking waters becomes a serious alternative. Actually, there is no monitoring program to control pollution discharges into these surface waters. In this study, a monitoring study was planned from September 2015 to February 2017 in order to evaluate the level of faecal pollution of the Aghien lagoon, a potential drinking water supply located in Abidjan. Based on the enumeration of faecal indicator bacteria (Escherichia coli and Intestinal enterococci), microbiological water quality from Aghien Lagoon and its tributaries were evaluated. Abundance of faecal indicators ranged between 1.72 × 10 1 CFU.100 ml-1 and 1.48 × 10 2 CFU.100 mL-1 for E. coli and between 2.26 × 10 3 CFU.100 mL-1 and 7.72 × 10 3 CFU.100 mL-1 for IE in lagoon waters. The abundances of FIB observed in tributaries were higher than those observed in lagoon water. The tributaries comparison indicates that, the Djibi River is the most contaminated with an average value of 1.73 × 10 6 CFU.100 mL-1 for IE and 6.92 × 10 5 CFU.100 mL-1 E. coli mL. The contributions of tributaries in terms of faecal bacteria discharged into the Aghien lagoon are not negligible and these contributions are significantly different between the dry and rainy season. Therefore, lagoon water may be a potential drinking water supply if wastewater treatment plants are implemented in the Djibi and Bété basins.

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Prevalence of indicator and pathogenic bacteria in a tropical river of Western Ghats, India

Cited by 17 publications

References 38 publications

The impact of urban areas on the water quality gradient along a lowland river

The impact of urban areas on the water quality gradient along a lowland river

Does Protection of Marine Areas Safeguard Coral Reefs From Human-Source Pollution?

Impact of faecal bacteria contamination on drinking water supply in Aghien Lagoon, Abidjan, Ivory Coast

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