Sterol biomarkers and fecal coliforms in a tropical estuary: Seasonal distribution and sources

Frena, Morgana; Santos, Ana Paula Stein; Souza, Michel R.R.; Carvalho, Shalana Santos; Madureira, Luiz A. S.; Alexandre, Marcelo R.

doi:10.1016/j.marpolbul.2018.12.007

Cited by 24 publications

(12 citation statements)

References 28 publications

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“…Previous studies have reported two significant observations of the worldwide FC situation. On the one hand, FC is inherently bioactive, differing from other physical and chemical pollutants, and the reported amount of microbial pollution in the environment has raised concerns regarding ecosystem and human health (Frena et al, 2019). On the other hand, the state and concentration of FC in water bodies are dynamic and are related to environmental factors (Chen and Liu, 2017;Carpenter et al, 2019;Jeon et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal variability and key influencing factors of river fecal coliform within a typical complex watershed

et al. 2020

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a b s t r a c tFecal coliform bacteria are a key indicator of human health risks; however, the spatiotemporal variability and key influencing factors of river fecal coliform have yet to be explored in a rural-suburban-urban watershed with multiple land uses. In this study, the fecal coliform concentrations in 21 river sections were monitored for 20 months, and 441 samples were analyzed. Multivariable regressions were used to evaluate the spatiotemporal dynamics of fecal coliform. The results showed that spatial differences were mainly dominated by urbanization level, and environmental factors could explain the temporal dynamics of fecal coliform in different urban patterns except in areas with high urbanization levels. Reducing suspended solids is a direct way to manage fecal coliform in the Beiyun River when the natural factors are difficulty to change, such as temperature and solar radiation. The export of fecal coliform from urban areas showed a quick and sensitive response to rainfall events and increased dozens of times in the short term. Landscape patterns, such as the fragmentation of impervious surfaces and the overall landscape, were identified as key factors influencing urban non-point source bacteria. The results obtained from this study will provide insight into the management of river fecal pollution.

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Section: Introductionmentioning

confidence: 99%

Spatiotemporal variability and key influencing factors of river fecal coliform within a typical complex watershed

et al. 2020

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“…Many studies on coliform bacteria have focused on sanitation or disease [2][3][4]. Studies treating coliforms as a water quality factor have addressed distribution and detection [5][6][7][8][9], analyses of discharge characteristics [10,11], and model development and simulation [12][13][14][15][16][17]. Various research topics have been also investigated, such as bacterial source tracking related to the occurrence of coliforms [16], the transport and fate of coliforms [17], and bacterial indicator testing [18].…”

Section: Introductionmentioning

confidence: 99%

“…Various research topics have been also investigated, such as bacterial source tracking related to the occurrence of coliforms [16], the transport and fate of coliforms [17], and bacterial indicator testing [18]. However, most focused on marine systems [7,13,14,[17][18][19][20][21][22][23] rather than on rivers [6,9,11], because coastal zones are often used for recreational purposes and are the final repositories of pollutants. Some studies have used regression analyses to determine the relationship between coliform bacteria and water quality factors in rivers [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Relationship between Coliform Bacteria and Water Quality Factors at Weir Stations in the Nakdong River, South Korea

Seo

Lee

Kim

2019

Water

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Artificial structures installed in rivers can change the natural physical, physiochemical, and biological characteristics of the rivers. Coliform bacteria are important water quality indicators, related to human health. This study investigated the relationship between coliform bacteria and water quality factors at eight weir stations constructed in the Nakdong River, a major river in South Korea. Fifteen water quality factors were analyzed at these sites from 2012 to 2016 using correlation and multiple regression analyses. The results for all stations confirmed the analytical validity, with high adjusted R 2 values of approximately 0.6 and 0.8 on average for total and fecal coliforms, respectively. The results showed influential water quality factors affecting the concentration of coliform bacteria at weir stations. Specifically, total coliforms were mostly affected by organic matter and fecal coliforms were mostly affected by phosphate phosphorus and suspended solids. Rainfall was the most influential factor affecting both coliforms. Further, both coliforms were negatively affected by organic matter below the Dalseong weir in the mid-to downstream area of the Nakdong River. A positive relationship with phosphate phosphorus was indicated at all weir stations. To the authors' knowledge, this kind of study has never been attempted so far. Thus, the study results can provide important information on influential water quality factors related to coliform bacteria, especially in the Nakdong River, creating a foundation for future water quality management.

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“…This fact is reversed by the research studies conducted (Cobo, J. R., Lock, K., Van Butsel, J., Pauta, G., Cisneros, F., Nopens, I., & Goethals, 2018; Mukate et al, 2018;Wu et al, 2018;Xue et al, 2018), the parameters of dissolved oxygen and total coliforms were higher when conditions were dry than rainy conditions. Total coliforms and fecal coliforms are categorized as bacteria that are often found in aquatic environments because of contamination from feces, both human, animal and domestic iste (Frena et al, 2019). When there is no domestic activity in the flow of The Semarang East Flood Canal, the parameters of total coliform concentration, fecal coliform are below the quality standard (Frena et al, 2019).…”

Section: Spatial Analysis Of Water Pollution Indeksmentioning

confidence: 99%

“…Total coliforms and fecal coliforms are categorized as bacteria that are often found in aquatic environments because of contamination from feces, both human, animal and domestic iste (Frena et al, 2019). When there is no domestic activity in the flow of The Semarang East Flood Canal, the parameters of total coliform concentration, fecal coliform are below the quality standard (Frena et al, 2019).…”

Section: Spatial Analysis Of Water Pollution Indeksmentioning

confidence: 99%

Water Pollution Index and The Distribution of Waterborne Diseases on The East Flood Canal, Semarang City : An Analysis Spatial

et al. 2021

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Jenis data dalam penelitian ini adalah kuantitatif dengan pengambilan 6 titik sampling di tepi timur Banjir Kanal yang kemudian dianalisis dengan pemodelan spasial-Gis. Parameter indeks pencemaran air adalah total coliform, fecal coliform, oksigen terlarut, dan deterjen anionik. Dari hasil perhitungan indeks pencemaran air, titik sampel 1-6 (T1-T6) dikategorikan dengan status pencemaran ringan. Namun jika dilihat dari masing-masing parameter terdapat parameter total coliform, fecal coliform, oksigen terlarut yang melebihi baku mutu. Hasil eksisting dan wawancara yang diperoleh, waterborne disease di wilayah kerja Puskesmas terkait dengan air limbah dari Kanal Banjir Timur Semarang. Dari hasil yang ada, sebagian besar pencemaran dari kegiatan domestik yang tidak memiliki instalasi pengolahan air limbah dan di T6 merupakan kawasan industri, yang memungkinkan pencemaran berasal dari kegiatan industri. Upaya juga diperlukan untuk membuat instalasi pengolahan air limbah baik secara individual, semi-komunal maupun komunal untuk meminimalkan parameter air yang melebihi baku mutu.This open access article is under the CC-BY-SA license.

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Sterol biomarkers and fecal coliforms in a tropical estuary: Seasonal distribution and sources

Cited by 24 publications

References 28 publications

Spatiotemporal variability and key influencing factors of river fecal coliform within a typical complex watershed

Spatiotemporal variability and key influencing factors of river fecal coliform within a typical complex watershed

Relationship between Coliform Bacteria and Water Quality Factors at Weir Stations in the Nakdong River, South Korea

Water Pollution Index and The Distribution of Waterborne Diseases on The East Flood Canal, Semarang City : An Analysis Spatial

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