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| Zurburg, Wouter; Smaal, Aad; Heral, Maurice; Dankers, Norbert. |
| The uptake and release of material by oysters (Crassostrea gigas) in the intertidal zone were estimated in situ in the Bay of Marennes-Oléron (France) in spring and autumn. 10 m long plexiglass tunnels were placed over small tables with bags containing oysters or empty oyster shells (control). Although in the very turbid conditions of the water column sedimentation of suspended particulate material could be observed in control experiments, higher fluxes (uptake) of seston, POC and PON and especially chlorophyll occurred in the presence of live animals. Release of dissolved nutrients was not evident from the tunnel with oysters, which is in contrast with studies in other areas with bivalves. This is ascribed to limited mineralization of biodeposits as an... |
| Tipo: Text |
Palavras-chave: Chlorophyll; Seston; Oysters; Nutrient release; Material uptake. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/1994/publication-6842.PDF |
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| Zurburg, Wouter; Smaal, Aad; Heral, Maurice; Dankers, Norbert. |
| Within the framework of an investigation into the carrying capacity of the Bay of Marennes-Oléron (France) for bivalve culture, the in situ uptake of suspended particulate material by oysters (Crassostrea gigas) and mussels (Mytilus edulis) was determined in experiments with benthic ecosystem tunnels. Very high fluctuations in seston quantity and quality were observed within and between tidal cycles. The percentage of organic carbon was inversely related to seston quantity at low concentrations. Organic carbon was diluted by resuspension of material rich in inorganic matter. At high seston concentrations a constant level of about 2% organic carbon was found. The CIN ratio was relatively constant throughout the seasons and fairly low (6.5 to 8.4). Owing to... |
| Tipo: Text |
Palavras-chave: Microphytobenthos; Chlorophyll; Feeding; Mussel; Oyster; Seston quality; Seston load. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/1994/publication-6843.PDF |
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