Buffering of silica and phosphate in a turbid river1

Mayer, Lawrence M.; Gloss, Steven P.

doi:10.4319/lo.1980.25.1.0012

Cited by 92 publications

(57 citation statements)

References 19 publications

(23 reference statements)

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“…This potential was evidenced by the higher phosphorus content of the agricultural stream sediments (Table 6). Mayer and Gloss ( 1980) found through repeated desorption studies that sediments can supply significantly more phosphorus than is indicated by EPC values. This phosphorus would be released from the sediments in the presence of agents like bacteria and algae.…”

Section: Discussionmentioning

confidence: 99%

“…The river velocity and nutrient concentration influence the diffusion rate. For phosphorus, the concentration in stream water is to a large extent controlled by the sediments through sorption-desorption processes (Meyer 1979;Mayer and Gloss 1980;Hill 1982). Factors such as sediment particle size, iron, aluminum, and organic content (Syers et al 1973;Meyer 1979;Hill 1982) influence phosphorus sorption by river sediments.…”

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confidence: 99%

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Factors controlling phosphorus limitation in stream sediments1

Klotz

1985

Limnology & Oceanography

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Factors influencing the phosphorus limitation of benthic microorganisms were determined for four streams (two agricultural and two forested) in central New York State over an annual cycle. Phosphorus limitation was measured biweekly as specific alkaline phosphatase activity (APA) of sediment samples. Analysis of variance showed the forested streams (sites 2 and 4) to have significantly different sediment APA from the agricultural streams (sites 1 and 3), the higher APA for the forested sites indicating greater phosphorus limitation. Stream total reactive phosphorus concentrations showed no relationship with watershed type, with mean annual values of 10.5 and 6.0 pg liter-l for agricultural sites 1 and 3 and 4.1 and 9.6 for forested sites 2 and 4. With all sites grouped together, sediment APA had a low correlation with stream water phosphate (r = 0.184, n = 73). Phosphorus sorption isotherms showed sediments from agricultural streams to have higher phosphate sorption indices than forested sites and to sorb rapidly large amounts of phosphorus. This resulted in higher available phosphorus content for the agricultural sediments and lower sediment APA.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

Factors controlling phosphorus limitation in stream sediments1

Klotz

1985

Limnology & Oceanography

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“…At this point on a buffer diagram, phosphate is neither adsorbed from solution to the sediment nor desorbed from the sediment to solution and is often interpreted as the equilibrium condition of natural systems (Siever & Woodford, 1973: McCallister & Logan, 1978Mayer & Gloss, 1980). In this study, the EPC for individual fractions of summer sediment ranged from 15 to 80 [xg P I" 1 and indicated typical ranges of phosphate buffering by sediment in these rivers.…”

Section: Phosphate Sorption Of Individual Size Fractionsmentioning

confidence: 91%

Grain size distribution effects on phosphate sorption by fluvial sediment: implications for modelling sediment-phosphate transport

Stone

Mulamoottil

Logan

1995

Hydrological Sciences Journal

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A sensitivity analysis was performed on a sediment-phosphate transport model by determining the phosphate sorption characteristics of separated size fractions and prepared size distributions of fine-grained ( < 64 jum) river sediment typically transported in two southern Ontario streams. The Langmuir equation was used to quantify phosphate release from the sediment. Results of the study indicated that Langmuir coefficients determined separately for individual grain size fractions can be used to model sediment-phosphate interactions. Under laboratory conditions, output from the model provided conservative estimates of phosphate release/uptake from grain size distributions of sediment in fluvial systems. The study provides phosphate release data for use in models that estimate sediment-P losses from watersheds.Effets de la distribution granulométrique sur ['adsorption des phosphates par les sédiments fluviaux: implications pour la modélisation du transport particulaire des phosphates Résumé Une analyse de sensibilité d'un modèle de transport particulaire des phosphates a été réalisée en déterminant les caractéristiques de 1'adsorption des phosphates sur différentes fractions granulométriques ainsi que sur diverses combinaisons d'entr'elles, préparées à partir de sédiments fins (<63 fivd) caractéristiques du transport solide de deux cours d'eau du sud de l'Ontario. L'équation de Langmuir a été employée pour quantifier la libération de phosphates du sédiment. Les résultats de l'étude indiquent que les coefficients de Langmuir déterminés pour différentes fractions granulométriques peuvent être employés pour modéliser les interactions du sédiment et des phosphates. Au laboratoire, les sorties du modèle fournissent une évaluation relativement satisfaisante des échanges de phosphates pour les distributions granulométriques rencontrées dans les systèmes fluviaux. L'étude fournit des données concernant l'émission de phosphates qui sont utilisables dans des modèles destinés à évaluer les exportations particulaires de phosphates en provenance de bassins versants.Open for discussion until I August 1995 68 M. Stone et al.

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“…That is, phosphorous levels in the water column may be controlled by sediment interactions rather than external sources. Lake sediments can act as either a source or a sink for phosphorous in the water column depending on the amount of dissolved oxygen, water column phosphorus concentrations, and sediment phosphorous concentrations [13].…”

Section: Phosphorousmentioning

confidence: 99%

Characterizing Total Phosphorus in Current and Geologic Utah Lake Sediments: Implications for Water Quality Management Issues

2018

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Utah Lake is highly eutrophic with large phosphorous inflows and a large internal phosphorous reservoir in the sediment. There are debates over whether this phosphorous is from geologic or more recent anthropologic sources. This study characterizes total phosphorous in geologic and current lake sediments to attempt to address that question. The average total phosphorous concentrations in the lake sediment were 666 ppm, with most samples in the 600 to 800 ppm range with a few larger values. Concentrations in historic geologic sediments were not statistically different from lake sediments. A spatial analysis showed that phosphorous distributions appeared continuous from the lake to the shore and that high and low values could be attributed to areas of seeps and springs (low) or feed lots and waste water discharge (high). These results indicate that geologic sediments without anthropogenic impacts are not statistically different than current lake sediments. The high values indicate that internal natural phosphorous loadings could be significant and the impaired state may be relatively insensitive to external anthropogenic loadings. If this is the case, then mitigation efforts to address anthropogenic sources may have minimal impacts. This case study presents an impaired water body where non-anthropogenic nutrient sources are significant and shows that reservoir management decisions should consider these non-anthropogenic phosphorous sources relative to anthropogenic sources. This study can serve as a template for evaluating the importance of geologic phosphorous sources for management decisions.

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Buffering of silica and phosphate in a turbid river1

Cited by 92 publications

References 19 publications

Factors controlling phosphorus limitation in stream sediments1

Factors controlling phosphorus limitation in stream sediments1

Grain size distribution effects on phosphate sorption by fluvial sediment: implications for modelling sediment-phosphate transport

Characterizing Total Phosphorus in Current and Geologic Utah Lake Sediments: Implications for Water Quality Management Issues

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