Biogeochemistry of sterols in plankton, settling particles and recent sediments in a cold ocean ecosystem (Trinity Bay, Newfoundland)

Hudson, E. D.; Parrish, Christopher C.; Helleur, Robert

doi:10.1016/s0304-4203(01)00066-4

Cited by 59 publications

(30 citation statements)

References 43 publications

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“…Stigmastanol, campesterol, stigmastenol, and cholestanol showed high concentrations from 1840 and peaked in 1955. These sterols are found in terrestrial plants and herbivore feces, among other sources (Biache and Philp, 2013;Hudson et al, 2001). Meanwhile, despite similar sources, sitosterol, stigmasterol, and cholesterol showed a different trend.…”

Section: Temporal Variability Of Sterolsmentioning

confidence: 98%

“…3). Both are found in higher plants (Hudson et al, 2001) and consequently in the feces of herbivores (Leeming et al, 1996).…”

Section: Temporal Variability Of Sterolsmentioning

confidence: 99%

“…In addition, several studies have developed indices or proportions between the fecal sterols to discern the possible source: human, animal, sewage treatment plant, etc. (Leeming et al, 1996;Hudson et al, 2001;Grimalt et al, 1990). These indices have been used in different types of water (lakes, oceans, rivers, water treatment and sewage plants) (Furtula et al, 2012) and different matrices worldwide (Froehner and Sanez, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Assessment of historical fecal contamination in Curitiba, Brazil, in the last 400 years using fecal sterols

Machado

Froehner

Sánez

et al. 2014

Science of The Total Environment

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Section: Temporal Variability Of Sterolsmentioning

confidence: 98%

“…3). Both are found in higher plants (Hudson et al, 2001) and consequently in the feces of herbivores (Leeming et al, 1996).…”

Section: Temporal Variability Of Sterolsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of historical fecal contamination in Curitiba, Brazil, in the last 400 years using fecal sterols

Machado

Froehner

Sánez

et al. 2014

Science of The Total Environment

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“…They have been extensively used in sedimentary geochemical studies (e.g., [106][107][108]) and aquatic biogeochemical studies [10]. For example, Hudson et al [109] grouped sterols in order to apportion inputs to a cold ocean ecosystem and showed the dominance of marine origin C 27 and C 28 sterols in plankton and settling particles contrasted with higher plant C 29 sterols dominating in the underlying sediments. As part of a trophic ecology study, Drazen et al [95] measured sterols to help assess feeding habits of abyssal echinoderms and used C 28 and C 29 sterols, especially 24-methylcholesta-5,22E-dien-3 -ol (brassicasterol) and 24-ethylcholest-5-en-3 -ol (sitosterol), to show the importance of phytodetritus.…”

Section: Molecular Biomarkersmentioning

confidence: 99%

Lipids in Marine Ecosystems

2013

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Lipids provide the densest form of energy in marine ecosystems. They are also a solvent and absorption carrier for organic contaminants and thus can be drivers of pollutant bioaccumulation. Among the lipids, certain essential fatty acids and sterols are considered to be important determinants of ecosystem health and stability. Fatty acids and sterols are also susceptible to oxidative damage leading to cytotoxicity and a decrease in membrane fluidity. The physical characteristics of biological membranes can be defended from the influence of changing temperature, pressure, or lipid peroxidation by altering the fatty acid and sterol composition of the lipid bilayer. Marine lipids are also a valuable tool to measure inputs, cycling, and loss of materials. Their heterogeneous nature makes them versatile biomarkers that are widely used in marine trophic studies, often with the help of multivariate statistics, to delineate carbon cycling and transfer of materials. Principal components analysis has a strong following as it permits data reduction and an objective interpretation of results, but several more sophisticated multivariate analyses which are more quantitative are emerging too. Integrating stable isotope and lipid data can facilitate the interpretation of both data sets and can provide a quantitative estimate of transfer across trophic levels.

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“…The relatively high resistance of the sterol skeleton to degradation, after release into the environment, makes them valuable as tracers of the transport and transformation processes of biogenic material (Gagosian & Nigrelli, 1979) and as tracers for studying sources of organic matter in coastal areas (Lee & Wakeham, 1989;Yunker et al, 1995;Hudson et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Distribution and sources of phytosterols in coastal and river sediments of south central Chile

Saavedra

Quiñones

Becerra

2014

lajar

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ABSTRACT. Phytosterols are potential endocrine-disrupting compounds. Quantification of phytosterols was carried out in sediments from four coastal zones and two rivers in south-central Chile. Sterol concentrations were determined by capillary gas chromatography-mass spectrometry and the sources of sedimentary organic matter were determined using sterol ratios and lipid biomarkers. Total sterol concentrations (0.03 to 10.4 µg g -1 ) were within the range reported for other marine ecosystems and the β-sitosterol concentration (0.01 to 2.01 µg g -1 ) was lower than previously reported for the upwelling system off Peru. Some coastal stations adjacent to the rivers had β-sitosterol of terrestrial origin. High concentrations of β-sitosterol were also found in sediments from more oceanic stations, supporting the notion that this sterol can also be produced by phytoplankton. No differences in the sterol concentration between the coastal zones were found. However, significant differences were found between almost all coastal zones and both rivers, and between rivers. At the station level and using different biomarkers of the source of organic matter, some areas were found to have a clear terrestrial influence; whereby it is assumed that the source of the phytosterols (especially β-sitosterol) would be vascular plants. The BioBío River and its mouth have a wide variety of sterols and lipids and high levels of cholesterol and epicholestanol, which is possibly related to the presence of domestic effluents derived from large cities. No clear spatial pattern emerge between the location of pulp mill industries and β-sitosterol sediment concentration, with the exception of one station located in the Gulf of Arauco. Keywords: phytosterols, biomarkers, endocrine disruption, pulp mill, Chile. Distribución y fuentes de fitoesteroles en sedimentos costeros y de ríos del centro-sur de Chile RESUMEN. Los fitoesteroles son potenciales disruptores endocrinos. Se cuantificaron fitoesteroles en sedimentos de cuatro zonas costeras y dos ríos en el centro-sur de Chile. Se determinó la concentración de esteroles utilizando cromatografía de gas con espectrómetro de masa y las fuentes de materia orgánica sedimentaria se determinaron utilizando proporciones de esteroles y biomarcadores lipídicos. Las concentraciones de esteroles totales (0,03 a 10,4 µg g -1 ) se encuentran dentro del rango informado para otros ecosistemas marinos y la concentración de β-sitosterol (0,01 a 2,01 µg g -1 ) fue menor que la previamente informada para el sistema de surgencia de Perú. Algunas estaciones costeras adyacentes a los ríos presentaron β-sitosterol de origen terrestre. Además se encontró una alta concentración de este compuesto en sedimentos de estaciones más oceánicas, confirmando que este esterol también puede ser producido por fitoplancton. Al considerar la concentración y presencia-ausencia de esteroles en sedimentos, no fue posible encontrar diferencias significativas entre las cuatro áreas costeras. Sin embargo, se obtuvo una clara diferencia entre la...

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Biogeochemistry of sterols in plankton, settling particles and recent sediments in a cold ocean ecosystem (Trinity Bay, Newfoundland)

Cited by 59 publications

References 43 publications

Assessment of historical fecal contamination in Curitiba, Brazil, in the last 400 years using fecal sterols

Assessment of historical fecal contamination in Curitiba, Brazil, in the last 400 years using fecal sterols

Lipids in Marine Ecosystems

Distribution and sources of phytosterols in coastal and river sediments of south central Chile

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