Comparison of the abundance of the fecal sterol coprostanol and fecal bacterial groups in inner-shelf waters and sediments near Sydney, Australia

Nichols, Peter D.; Leeming, Rhys; Rayner, Mark; Latham, Val; Ashbolt, Nicholas J.; Turner, Christine E.

doi:10.1016/0021-9673(93)80552-j

Cited by 76 publications

(40 citation statements)

References 20 publications

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“…Although results may vary depending on the method used to determine E. coli and faecal coliforms, the highest counts of sewage bacteria markers obtained in this study were nevertheless lower than those cited by Nichols et al (1993) for sediments contaminated by domestic sewage on the coast of Sydney, Australia. On the other hand, Kawakami (1999) found colimetric values on beaches improper for primary contact in the coastal region of the state of São Paulo similar to those found in Botafogo Cove.…”

Section: Distribution Of Faecal Indicator Bacteriacontrasting

confidence: 67%

“…As to sediment samples, studies are much more restricted. We have found only two studies comparing the distribution of coprostanol and faecal bacteria in sediments, and the relationship between the two indicators were highly dependent on local environmental conditions (Nichols et al, 1993).…”

Section: Introductionmentioning

confidence: 94%

“…The relationship between bacteria indicators and coprostanol in the water depends on environmental factors (Mudge & Lintern, 1999;Noblet et al, 2004), but it is possible to develop a water quality criterion for bathing purposes based on coprostanol (Nichols et al, 1993;Isobe et al, 2004). According to Isobe et al (2002), in tropical areas the limit for primary contact of ~1000 faecal coliforms per 100 ml (commonly adopted in several countries, including Brazil) corresponds to 30-100 ng L -1 of coprostanol.…”

Section: Relationship Of Coprostanol To Faecal Indicator Bacteriamentioning

confidence: 99%

“…Comparative studies of coprostanol and colimetrics are, therefore, limited and the results inconclusive (Nichols et al, 1993).…”

Section: Relationship Of Coprostanol To Faecal Indicator Bacteriamentioning

confidence: 99%

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A comparison between faecal sterols and coliform counts in the investigation of sewage contamination in sediments

Costa

Carreira

2005

Braz. j. oceanogr.

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nine sediment samples (0-2 cm) were collected from Botafogo Cove (southwestern part of Guanabara Bay) in order to compare the use of chemical (coprostanol) and biological markers (E. coli and total coliforms) in identifying faecal contamination. The values found (organic carbon -6.0 to 64.8 mg g -1 ; coprostanol -1.4 to 105 µg g -1 ; E. coli -< 30 to 2400 NMP/10g and total coliforms -40 to 9300 NMP/10g) were similar to or even higher than those observed in other contaminated areas of Guanabara Bay. In stations close to the shoreline, both coprostanol concentration and bacteria count confirmed that domestic sewage had accumulated in the cove. Coprostanol concentrations were still relatively high in the stations furthest from contamination sources, although faecal material represented a smaller fraction of the total organic carbon originated by dilution in waters containing algae. Reduction was proportionately higher by virtue of the use of the colimetric assessment method. This result may be associated with the effect that environmental variables (light, salinity, temperature) may have on the survival of bacteria during transport and deposition of sewage particles. Consequently, based on these results, coprostanol may be considered the better indicator of the faecal contamination level in Botafogo Cove sediments. R E S U M OEm setembro de 2002, foram coletadas nove amostras de sedimento superficial (0-2 cm) na Enseada de Botafogo (sudoeste da Baía de Guanabara/RJ), a fim de comparar o uso de marcadores químicos (coprostanol) e biológicos (E. coli e coliformes totais) na identificação da contaminação fecal da região. Os resultados obtidos (carbono orgânico -6,0 to 64,8 mg g -1 ; coprostanol -1,4 to 105 µg g -1 ; E. coli -< 30 to 2400 NMP/10g e coliformes totais -40 to 9300 NMP/10g) foram iguais ou maiores aos observados em outras áreas contaminadas da Baía de Guanabara. Nas estações próximas à linha de costa, as concentrações de coprostanol e as contagens das bactérias confirmaram que o esgoto doméstico se acumulou no sedimento da enseada. As concentrações de coprostanol se mantiveram altas nas estações distantes das fontes de contaminação, porém o material fecal representou uma menor fração do carbono orgânico. Nessas mesmas estações, redução na contagem de colimetria foi proporcionalmente mais alta, provavelmente pela baixa sobrevivência das bactérias devido ao efeito de luz, salinidade e temperatura. durante o transporte e deposição das partículas de esgoto. Portanto, baseando-se nos resultados obtidos, o coprostanol foi um indicador mais adequado da contaminação fecal nos sedimentos da Enseada de Botafogo.

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Section: Distribution Of Faecal Indicator Bacteriacontrasting

confidence: 67%

Section: Introductionmentioning

confidence: 94%

Section: Relationship Of Coprostanol To Faecal Indicator Bacteriamentioning

confidence: 99%

“…Comparative studies of coprostanol and colimetrics are, therefore, limited and the results inconclusive (Nichols et al, 1993).…”

Section: Relationship Of Coprostanol To Faecal Indicator Bacteriamentioning

confidence: 99%

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A comparison between faecal sterols and coliform counts in the investigation of sewage contamination in sediments

Costa

Carreira

2005

Braz. j. oceanogr.

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“…coprostanol 10 ng/g-dry (Hatcher and McCillivary, 1979), 100 ng/g-dry (Writer et al, 1995), 500 ng/g-dry (Nichols et al, 1993;Gonzalez-Oreja and SaizSalinas, 1998) . 10 ng/gdry .…”

Section: 분변계 스테롤 분석mentioning

confidence: 99%

Sterols as Indicators of Fecal Pollution in Sediments from Shellfish Farming Areas (Yeoja Bay and Gangjin Bay) of Korea

Choi¹,

Lee²,

Hwang³

et al. 2013

Korean Journal of Fisheries and Aquatic Sciences

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Eight fecal sterols were analyzed in surface sediments collected from shellfish farming areas in Yeoja Bay and Gangjin Bay, Korea, to evaluate sewage-derived fecal pollution. The concentrations of coprostanol, a good marker of sewage-derived organic contamination, in sediments were in the range of 10-530 ng/g-dry in Yeoja Bay, and 10-190 ng/g-dry in Gangjin Bay. Coprostanol levels were markedly higher in the inner bay than in the outer bay. These levels were lower than those reported in urbanized bays in Korea, however, they were comparable to levels in other shellfish farming areas including Gamak Bay. A multivariate analysis of the ratios of other sterols suggested that the sterols originated from sewage and plankton/benthos. Sewage was the dominant source at stations located close to the river mouth and wastewater treatment plant (WWTP) outfalls, and plankton/benthos was the primary source in the outer bay. These results suggest that management of point sources, e.g., WWTP as well as non-point sources, e.g., riverine inputs is important for improving the water quality in Yeoja Bay and Gangjin Bay.

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Clostridium

Payment¹,

Godfree²,

Sartory³

2003

Encyclopedia of Environmental Microbiology

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Comparison of the abundance of the fecal sterol coprostanol and fecal bacterial groups in inner-shelf waters and sediments near Sydney, Australia

Cited by 76 publications

References 20 publications

A comparison between faecal sterols and coliform counts in the investigation of sewage contamination in sediments

A comparison between faecal sterols and coliform counts in the investigation of sewage contamination in sediments

Sterols as Indicators of Fecal Pollution in Sediments from Shellfish Farming Areas (Yeoja Bay and Gangjin Bay) of Korea

Clostridium

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