Diagenesis of settling seston: identity and transformations of organic phosphorus

Journal of Environmental Monitoring : JEM
Kasper ReitzelMichael Hupfer

Abstract

Solution (31)phosphorus NMR spectroscopy and sequential fractionation were used to follow diagenetic changes in phosphorus forms during decomposition of settling seston in Lake Nordborg, a shallow eutrophic lake in Denmark. In a decomposition experiment, seston released >60% of their total phosphorus during ~50 days incubation, although seston collected during summer contained more phosphorus and released it over a longer period compared to seston collected during spring. Seston decomposition increased concentrations of potentially bioavailable polyphosphate and phosphodiesters, but also promoted the formation of refractory phosphorus forms that might be buried permanently in the sediment. Combining these results with in situ measurements of phosphorus concentrations in lake water and sediment traps revealed that the release from settling seston plays only a minor role in the accumulation of phosphorus in the hypolimnion of Lake Nordborg.

References

Mar 22, 2001·The Science of the Total Environment·K Pettersson
Mar 11, 2005·Environmental Science & Technology·Joakim AhlgrenEmil Rydin
Jun 30, 2005·Environmental Science & Technology·Kasper ReitzelHenning S Jensen
Oct 16, 2010·Water Research·J AhlgrenE Rydin
Aug 31, 2011·Environmental Science & Technology·Anna N KulakovaJohn W McGrath

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Citations

May 7, 2016·The Science of the Total Environment·Ryuichiro ShinoharaKoichi Shimotori
Oct 4, 2017·Environmental Science and Pollution Research International·Yuan HezhongZhang Enlou
Apr 30, 2020·The Science of the Total Environment·Tingxi ZhangLimin Zhang
Sep 2, 2021·Scientific Reports·Mary R Arenberg, Yuji Arai

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