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| Le Fevre, J; Le Corre, P; Morin, P; Birrien, J L. |
| A comparison is attempted between a semi enclosed bay (Rade de Brest), the vicinity of the Ushant tidal thermal front and the Celtic Sea shelf-break, with respect to phytoplankton and zooplankton overall abundance, using dissolved oxygen as a measure of in situ photosynthetic activity. A simple conceptual model, of a type termed agricultural, appears to be applicable to both the Rade de Brest and the shelf-break ecosystems, while the case of the Ushant front seems more complex. Different time constants in basic physical processes are tentatively put forward to account for the differences in ecosystem functional structures. |
| Tipo: Text |
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| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/00247/35787/34300.pdf |
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| Coste, B; Le Corre, P; Minas, Hj; Morin, P. |
| Nutrient measurements were performed during the Mediprod IV cruise of the R.V. Jean Charcot in the whole western basin of the Mediterranean Sea, special attention being paid to the Alboran Sea and to the Strait of Gibraltar. From these data, new values for the nutrient budget of the Mediterranean Sea are obtained. It appears that dissolved organic nitrogen (DON) contributes to the total nitrogen input in an amount of more than 50%, and that the river runoff contribution accounts for less than 10% of the total nutrient input. High values of the N : P ratio in the Mediterranean Sea (> 20) are explained by the nitrogen and phosphorus content of the superficial layers of the water inflow into the Mediterranean Sea, together with mineralization processes... |
| Tipo: Text |
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| Ano: 1988 |
URL: http://archimer.ifremer.fr/doc/00267/37832/35913.pdf |
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