|
|
|
|
|
| Ganteaume, A; Gobert, J; Malestroit, Pascale; Menager, V; Francour, P; Boudouresque, Cf. |
| In vitro short time experiments (a few weeks) show that daily ingestion by Paracentrotus lividus (Echinodermata: Echinoidea) is weak (0-81 mg DW d(-1) ind(-1)) for Caulerpa taxifolia (Chlorophyta), compared to the data recorded with an almost totally avoided brown alga, Cystoseira compressa (24-137 mg DW d(-1) ind(-1)) and with a preferred brown alga, Halopteris scoparin (79-397 mg DW d(-1) ind(-1)). There is no significant difference between spring (when the toxic metabolite content is at its minimum) and summer-autumn (when it is at its maximum). In contrast, the absorption rate of the sea urchin fed on Caulerpa taxifolia is significantly weaker in spring than in summer-autumn. Overall, the daily absorbed weight is negative in spring with C. taxifolia... |
| Tipo: Text |
|
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00210/32132/30589.pdf |
| |
|
|
| Francour, P. |
| From July 1988 to September 1992, Scuba divers used a non-destructive sampling method to study the fish communities of rocks and Posidonia oceanica seagrass beds, in Scandola Marine Reserve. Sites were established in the integral reserve (protection of the marine environment), in the non-integral reserve (partial protection) and outside the reserve (no protection). Average density and biomass of the sampled population in P. oceanica seagrass beds showed no significant difference between the sites in the integral reserve and the others. Only the integrally-protected shallow and deep water zones showed considerably reduced seasonal variations. For rocky substrata, the integral reserve site demonstrated higher density and biomass than the other sites. The... |
| Tipo: Text |
Palavras-chave: RESERVE EFFECT; ROCKY REEFS; POSIDONIA-OCEANICA; SEAGRASS BEDS; TEMPORAL-ANALYSIS; CORSICA. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00098/20893/18507.pdf |
| |
|
|
|
