Articles | Volume 17, issue 10
Research article
20 May 2020
Research article |  | 20 May 2020

The influences of historic lake trophy and mixing regime changes on long-term phosphorus fraction retention in sediments of deep eutrophic lakes: a case study from Lake Burgäschi, Switzerland

Luyao Tu, Paul Zander, Sönke Szidat, Ronald Lloren, and Martin Grosjean

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Cited articles

Anthony, R. S.: Iron-rich rhythmically laminated sediments in Lake of the Clouds, northeastern Minnesota, Limnol. Oceanogr., 22, 45–54,, 1977. 
Appleby, P. G.: Chronostratigraphic techniques in recent sediments, in: Tracking Environmental Change Using Lake Sediments. Basin Analysis, Coring, and Chronological Techniques, edited by: Last, W. M. and Smol, J. P., Springer, Dordrecht, the Netherlands, 171–203,, 2002. 
Bennett, K. D.: Determination of the number of zones in a biostratigraphical sequence, New Phytol., 132, 155–170,, 1996. 
Binderheim-Bankay, E. A.: Sanierungsziel für natürlich eutrophe Kleinseen des Schweizer Mittellandes, PhD thesis, ETH Zurich, Switzerland, 149 pp., 1998. 
Bonk, A., Kinder, M., Enters, D., Grosjean, M., Meyer-Jacob, C., and Tylmann, W.: Sedimentological and geochemical responses of Lake Żabińskie (north-eastern Poland) to erosion changes during the last millennium, J. Paleolimnol., 56, 239–252,, 2016. 
Short summary
In a small, deep lake on the Swiss Plateau, net fluxes of labile P fractions in sediments that can be released to surface waters have been predominately controlled by past hypolimnetic anoxic conditions since the early 1900s. More than 40 years of hypolimnetic withdrawal can effectively reduce net P fluxes in sediments and internal P loads but not effectively decrease eutrophication. These findings should likely serve the management of deep eutrophic lakes in temperate zones.
Final-revised paper