Evolution quantitative à long terme des rotifères au cours de l'eutrophisation du Lac Léman |
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| Authors: | Gérard Balvay Monique Laurent |
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| Institution: | (1) Institut de Limnologie I.N.R.A., B.P. 511, F-74203 Thonon-les-Bains Cedex, France |
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| Abstract: | Eutrophication in Lake Geneva (= Lake Léman) appears primarily as changes in chemical characteristics and plankton populations, inducing quantitative changes in the rotifer assemblages and species combinations.In the course of eutrophication, an increase of the rotifer abundance was found, together with settlement of new species and increase of eutrophication tolerant species, and despite the decrease or disappearance of eutrophication sensitive species.The new equilibrium in the trophic state of Lake Geneva related with the decreasing inputs of nutrients, induces a new structure and less abundance of the total pelagic rotatorian community. |
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| Keywords: | Lake Geneva rotifers long-term changes eutrophication population structure |
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