
Les résultats des mesures et des analyses pratiquées par l'I.S.T.P.M. sur onze stations réparties dans l'étang de Thau, de 1974 à 1980, ont permis d'établir la variation moyenne de divers paramètres hydrologiques au cours de l'année. Les moyennes mensuelles générales présentées portent sur la température, la salinité, le pH, la teneur en oxygène et en sels nutritifs. Il apparaît des relations entre l'évolution de plusieurs de ces facteurs ainsi qu'avec l'abondance planctonique globale. Les différences enregistrées entre la surface et le fond sont précisées et des gradations entre la communication de l'étang avec la mer et son extrémité sont établies.
The results of a great number of measurements and water analyses realized by I.S.T.P.M. in the lagoon of Thau between 1974 and 1980, have led to the establishment of the mean variation of some hydrological parameters during the year. Monthly mean values of temperature, salinity, pH, dissolved oxygen, nutritive salts and abundance of plankton, were studied as well as possible relations between these factors. The observed differences between the surface and the bottom are related as well as gradiation between the entrance and the end of the lagoon.
Salinity, pH, Thau Lagoon, MED, France, Languedoc Roussillon, Seasonal variations, Plankton, Water analysis, Dissolved oxygen, Water temperature, Nutrients (mineral), Lagoons
Salinity, pH, Thau Lagoon, MED, France, Languedoc Roussillon, Seasonal variations, Plankton, Water analysis, Dissolved oxygen, Water temperature, Nutrients (mineral), Lagoons
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