Phosphorus Forms Related to Sediment Grain Size and Geochemical Characteristics in French Coastal Areas

Andrieux-Loyer, Françoise; Aminot, Alain

doi:10.1006/ecss.2001.0766

Cited by 151 publications

(66 citation statements)

References 36 publications

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“…For example, when the redox potential is less than 200 mV, Fe (III) in the sediment is reduced to Fe (II), and insoluble Fe(OH) 3 to soluble Fe(OH) 2 , leading to the release of PO 4 3-and Fe (II) [47,48] . In the present study, the ratios of total Fe to TP concentration in the sediments from Station I to VI were 43.2±8.0, 42.3±3.1, 46.4±4.3, 45.5±7.3, 43.6±4.1, 43.5±2.9, respectively, which were similar to those in the surface sediments in the Bay of Seine (54.0) [49] , Wadden Sea (21.6-27.0) [50] and Lake Erie (54.0) [51] . These indicate that most iron in the sediment is non-reactive as it is bounded with silicates, and thus cannot react with P [52] .…”

Section: Spatial Variations Of P In the Sediments And The Mechanisms supporting

confidence: 85%

Spatiotemporal variations of internal P-loading and the related mechanisms in the large shallow Lake Chaohu

Zhang

Xie

et al. 2006

SCI CHINA SER D

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Spatiotemporal variations of P species and adsorption behavior in water column, interstitial water, and sediments were investigated in the large shallow eutrophic Lake Chaohu. Orthophosphate (Ortho-P) and total phosphorus (TP) concentrations were significantly higher in the western part than in the eastern part of the lake, due to different nutrient inputs from the surrounding rivers. Moreover, particulate phosphorus (PP) concentration was in a similar spatial pattern to Ortho-P and TP concentrations, and also showed significantly positive correlation with the biomass of Microcystis, indicating more uptake and store of phosphorus by Microcystis than by other algae. Increase of pH and intensive utilization of P by phytoplankton were the main factors promoting P (especially Fe-P) release from the sediment to interstitial water during the cyanobacterial blooms in Lake Chaohu. Spatial dynamics in TP concentration, P species and adsorption behavior of the sediment, coupled with the statistical analyses, suggested that the spatial heterogeneity of P contents in the sediment was influenced by various factors, e.g. human activities, soil geochemistry and mineral composition. In spite of similar TP contents in the sediments, increase in proportion of Fe-P concentration in the sediment may result in a high risk of P release.Keywords: eutrophication, water column, sediment, phosphorus, species, sorption and release, Lake Chaohu, cyanobacterial blooms.Dense blooms of phytoplankton, especially cyanobacteria, often occur in the hypereutrophic lakes. Outbreak of cyanobacterial blooms is one of the most important symptoms of eutrophic inland waters. P is considered to be the main factor inducing the nuisance growth of cyanobacteria. Cyanobacterial blooms in eutrophic lakes [1][2][3] are often coincident with the increase of P in the water column [4][5][6] . Song et al. [7] investigated the relationship between algal blooms and phosphorus status of sediment in ponds, and found that compared with the ponds lacking Microcystis aeruginosa the ponds with Microcystis aeruginosa blooms showed relatively high concentrations of Ortho-P in the overlying water or different P species in the interstitial water. However, studies on the influence of phytoplankton on P dynamics are very limited. Wang et al. [8] studied the effects of the variations of environmental conditions on phosphorus release from the sediments in Lake Taihu, and found a significant increase of P release when both algae and sediment were present in the experiment. Anderson [9] suggested that increased P release from the sediment in summer time [10] studied the influence of pH on P release from the sediments sampled from the freshwater tidal portion of the Potomac estuary, and found that the release rate increased markedly when pH of the overlying water was 9.5-10. Xie et al. [11] found the different responses of N and P in the sediment to the cyanobacterial blooms in an enclosure experiment conducted in Lake Donghu in the summer of 2000, and they conducted that ...

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Section: Spatial Variations Of P In the Sediments And The Mechanisms supporting

confidence: 85%

Spatiotemporal variations of internal P-loading and the related mechanisms in the large shallow Lake Chaohu

Zhang

Xie

et al. 2006

SCI CHINA SER D

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“…Moreover according to Caraco et al (1990) and Aminot et al (1993), heavy loads of particulate phosphorus (adsorbed, apatite, non-apatite inorganic, organic), expelled from estuaries during floods, may significantly contribute to the enrichment of the coastal zone. Andrieux- Loyer and Aminot (2001) estimated total phosphorus concentrations in the sediment along the French Atlantic coast during February 1991. These concentrations range from 4 to 25 mmol g -1 in the Gironde estuary and from 17 to 44 mmol g -1 in the Loire estuary.…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, oxide forms (Fe/AL-P) seem to be a minority form among the sedimentary phosphorus pools. In the outer estuaries of the Loire and Gironde rivers, they represent respectively 10% and 15% of the total sedimentary phosphorus in the Bay of Biscay (Andrieux- Loyer and Aminot, 2001).…”

Section: Discussionmentioning

confidence: 99%

Seasonal evolution of the nutrient pattern on Biscay Bay continental shelf over the years 1999-2000

Loyer¹,

Lampert²,

Ménesguen³

et al. 2006

Sci. Mar.

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“…Understanding the fate of small particles within lake systems is important because they are often associated with heavy metal contaminants and phosphorus (Williams, Jaquet & Thomas, 1976;Schorer, 1997;Andrieux-Loyer & Aminot, 2001). The cohesive properties of sediments, such as the behaviour of colloidal particles and the tendency of organic material to form aggregates (Alldredge & McGillivary, 1991), can result in an increase in effective grain size, thereby increasing the critical shear required for resuspension (Håkanson & Jansson, 1983).…”

Section: Introductionmentioning

confidence: 99%

Contribution of sediment focussing to heterogeneity of organic carbon and phosphorus burial in small lakes

et al. 2011

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Contribution of sediment focussing to heterogeneity of organic carbon and phosphorus burial in small lakes. Freshwater Biology, 57 (2). 290-304.10.1111/j. 1365-2427.2011.02616.x Contact CEH NORA team at noraceh@ceh.ac.ukThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. 2. We elucidated the heterogeneity of surface sediment distribution in a small lake, Esthwaite Water (UK). We considered multiple focusing mechanisms (downslope gravitational transport, waves, and wind-driven currents) and their effect on multiple sediment variables (water content, organic content, total phosphorus and benthic diatom taxon richness). In particular, we investigated the implications of different focusing processes for calculations of burial rates of organic carbon and total phosphorus. We used a new, high-resolution bathymetric survey of the lake in our calculations and compared the results to those from an earlier low-resolution bathymetric survey.4. Wave-driven focusing and downslope gravitational transport were not significant in Esthwaite Water. However, calculated wind-induced current speeds were sufficient to mobilise small particles at all depths of the lake and therefore could potentially be an important resuspension process in small lakes.5. We calculated that approximately half of the phosphorus entering the lake is retained in the sediments. This has important implications for the ability of the lake to recover from eutrophication because of the prolonged internal phosphorus loading capability.6. Differences in calculated burial rates due to sediment heterogeneity were much larger than those due to the difference in bathymetric resolution. Ignoring sediment heterogeneity when calculating flux-to-lake bed rates for organic carbon and total 3 phosphorus can lead to large inaccuracies, with implications for burial rate and budget studies.

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Phosphorus Forms Related to Sediment Grain Size and Geochemical Characteristics in French Coastal Areas

Cited by 151 publications

References 36 publications

Spatiotemporal variations of internal P-loading and the related mechanisms in the large shallow Lake Chaohu

Spatiotemporal variations of internal P-loading and the related mechanisms in the large shallow Lake Chaohu

Seasonal evolution of the nutrient pattern on Biscay Bay continental shelf over the years 1999-2000

Contribution of sediment focussing to heterogeneity of organic carbon and phosphorus burial in small lakes

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