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| Tournier, H.; Audabram, D.; Landrein, S.; Deslous Paoli, J.m; Juge, Claude. |
| The mediterranean lagoon of Thau is subject to dystrophic crisis leading to mortalities of the shells grown there. This study shows that the risk for such a crisis is permanent during the Summer. Disappearing of oxygen, mainly tabes place in the breeding areas and near the bottom because of the concentration of shells and the abundance of biodeposit. A correlation is shown between the level of the oxygen in the water and the speed of the wind which is the main factor of balance. |
| Tipo: Text |
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| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/00039/15001/12335.pdf |
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| Deslous Paoli, J.-m.; Sornin, J.-m.; Durand, F.; Chevalier, M.; Lagabrielle, R.; Pellissier, M.; Tournier, H.; Juge, C.. |
| Sediments from the shell-fish culture areas in the Lagoon of Thau are mainly constituted of sand and mud elements ; at a depth of about 80 cm to 1 meter in the sediment, much coarser elements are found. These sediments are more clayey in the N-E corners of each area and in a general way, richer in organic matter than the other areas of the lagoon, with very negative oxido-reduction potentials. Ammonia and phosphate amounts in intersticial waters are very high. A gradient of concentration from the bottom towards the surface of the sediment is observed, thus inducing diffusing flows in the water column. |
| Tipo: Text |
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| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/00039/15018/12345.pdf |
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