Variability of sediment diatom assemblages of Lake Pont-de-Salars on the Viaur River (France)

Limnological surveys from the pelagic zone of Lake Pont-de-Salars were undertaken during the 1993-1996 period, which included the emptying of the whole-lake in summer 1995 and the first post year refilling. This reservoir was warm and monomictic and was determined to vary between oligo- and meso-eut...

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Bibliographic Details
Published in:Annales de limnologie 2001-01, Vol.37 (3), p.167-176
Main Authors: CHUNG, S. O, LE COHU, R
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Biological and medical sciences
France, Pont-de-Salars L
France, Viaur R
Fresh water ecosystems
Fundamental and applied biological sciences. Psychology
Synecology
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Summary:Limnological surveys from the pelagic zone of Lake Pont-de-Salars were undertaken during the 1993-1996 period, which included the emptying of the whole-lake in summer 1995 and the first post year refilling. This reservoir was warm and monomictic and was determined to vary between oligo- and meso-eutrophic status from year to year. Three sediment cores were collected from the deepest zone and frozen in situ during the short drying period, just after the emptying and before the refilling of the reservoir. Analysis of the relative abundance and vertical distribution of diatom taxa was undertaken. The diatom vertical distribution, evident by visual biostratigraphy, is confirmed by the correspondence analysis (CA) despite of absence of sediment dating.
ISSN:0003-4088
2100-000X
DOI:10.1051/limn/2001014