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| Barranguet, C; Alliot, E; Plantecuny, Mr. |
| Microphytobenthos activity in coastal waters has been studied at two shellfish fanning sites: an oyster farm in Thau lagoon and a mussel farm in Carteau bay (NW Mediterranean coast). In both cases, shellfish are cultivated on ropes hanging from rigid structures (tables) in shallow waters (- 5 m). An ''under table'' station and an ''outside table'' (reference) station were chosen at each site. Oxygen and ammonia fluxes at the water-sediment interface were measured in dark and transparent benthic chambers. Chlorophyll a concentrations were two- to threefold higher in ''under table'' sediments than outside (260 mg Chl a m(-2) under the oyster table, 436 mg Chl a m(-2) under the mussel table in winter). Net oxygen fluxes were negative at all stations, except... |
| Tipo: Text |
Palavras-chave: MICROPHYTOBENTHOS; FLUXES; PRIMARY PRODUCTION; SHELLFISH CULTIVATION. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00098/20884/18498.pdf |
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| Grenz, C; Plantecuny, Mr; Plante, R; Alliot, E; Baudinet, D; Berland, B. |
| Benthic chambers were used to investigate fluctuations in nutrient fluxes and oxygen changes when comparing two benthic biota. Muddy sediments located under mussel-cultivation ropes were compared with a station outside the mussels' influence. Biodeposition from the mussels results in a drastic increase in the nutrient fluxes. A standard procedure is established in order to give reliable comparisons between stations and seasons: as a rule it should include six-hour periods of incubation with sampling intervals of two hours and at least four benthic chambers - preferably six - at each station. |
| Tipo: Text |
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| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/00102/21373/18973.pdf |
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