Internal Phosphorus Loading from the Bottom Sediments of a Dimictic Lake During Its Sustainable Restoration

Water, Air, and Soil Pollution
Katarzyna Kowalczewska-MaduraBeata Messyasz

Abstract

The ribbon type Lake Durowskie (Western Poland) is currently undergoing a sustainable restoration process due to water quality deterioration, manifested in water blooms, low transparency, and oxygen deficits near the bottom sediments. Three restoration methods were applied: (i) hypolimnion aeration using two wind-driven pulverizing aerators installed at the deepest places, (ii) phosphorus inactivation using small doses of iron sulfate and magnesium chloride several times a year, and (iii) biomanipulation using pike fry stocking. Research on the exchange of phosphorus in the sediment-water interphase was conducted in the years 2009-2016 to determine the multiannual changes of internal phosphorus loading from bottom sediments during the restoration process. The sustainable approach resulted in a decrease of internal phosphorus loading and a gradual increase in the sorption capacity of bottom sediments, particularly noticeable in the last 2 years. The content of phosphorus in the sediment and in the interstitial water fluctuated, showing an increase during the first years of restoration and then a gradual decrease. It was proved that the process of sustainable restoration is cheap and does not interfere strongly with the ecosystem...Continue Reading

References

Jun 14, 2003·TheScientificWorldJournal·M SondergaardE Jeppesen
Jan 26, 2005·Ambio·Maria Dittrich, Martin Obst
Jan 2, 2013·Water Research·Andreas KleebergMichael Hupfer
Aug 12, 2014·The Science of the Total Environment·Miltiadis Zamparas, Ierotheos Zacharias
Apr 23, 2017·Environmental Science and Pollution Research International·Katarzyna Kowalczewska-MaduraStanisław Podsiadłowski

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Citations

Dec 29, 2020·The Science of the Total Environment·Maria Conceição LopesTeresa Cristina Tarlé Pissarra
Oct 19, 2019·Water Research·Toon van DaelErik Smolders

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Methods Mentioned

BETA
atomic absorption spectrometry

Software Mentioned

Canoco
STATISTICA

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