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Oligotrophication after a nutrient reduction in a shallow sand-pit lake (Créteil Lake, Paris suburbs, France) : a case of rapid restoration

Published online by Cambridge University Press:  01 February 2009

J. Garnier ,
A. Chestérikoff ,
P. Testard  and
B. Garban
J. Garnier
Affiliation:
Laboratoire de Géologie Appliquée, U.A. 1367 C.N.R.S., 4, Place Jussieu, Tour 26, 5 étage, 75005 Paris, France Groupe de Microbiologie des Milieux Aquatiques, Université Libre de Bruxelles, Campus de la Plaine, CP 221, 1050 Bruxelles, Belgique
A. Chestérikoff
Affiliation:
Institut d'Hydrobiologie et de Climatologie, 4, Place Jussieu, Tour 26, 5 étage, 75005 Paris, France
P. Testard
Affiliation:
Laboratoire de Géologie Appliquée, U.A. 1367 C.N.R.S., 4, Place Jussieu, Tour 26, 5 étage, 75005 Paris, France
B. Garban
Affiliation:
Institut d'Hydrobiologie et de Climatologie, 4, Place Jussieu, Tour 26, 5 étage, 75005 Paris, France
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Abstract

A limnological study was performed out, over 8 years from 1979 to 1986, in a shallow recently created sand-pit lake,Lake Créteil (Paris suburb, France). The lake is mainly supplied by phreatic waters. Typical of shallow waters, thermal stratification which occurred from May to October was intermittently broken by wind, leading to high seasonal fluctuations and allowing a reoxygenation of the total water column. The interannual development of the lake was characterized by a regular increase in transparency (from 1 m in 1979 to 2.7 m in 1985) which was partly due to not only stabilization of the bottom sediment and the banks, but also to a reduction of the biological component. A decrease in chlorophyll a concentrations resulted from nutrient diversion of domestic inputs collected through the rainwater pipe cominginto the lake. The rapid restoration of water quality shows that this small artificial lake is very sensitive to human interventions.

Keywords

shallow lakesand-pitnutrient reductionoligotrophicationlac peu profondsablière en eauréduction en éléments nutritifsoligotrophisation
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 28 , Issue 3 , 1992 , pp. 253 - 262
Copyright
© Gauthier-Villars, 1992

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