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| Registros recuperados: 22 | |
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| Le Fevre-lehoerff, Geneviève; Delesmont, Régis; Dewarumez, Jean-marie; Hitier, Benoist; Luczak, Christophe; Woehrling, Daniel. |
| This is the 22th annual surveillance report concerning the Gravelines nuclear power plant. The climatology characteristics for 1999 are 11.4° C for air temperature and 769 mm for rainfall. The average AT is 8.35° C measuring water temperature at the entrance and outfall of nuclear plant. Bromoform average value was 20.2 ug/l and the percentage of water recirculation was 6.8 %. Annual oscillation Vibrio was similar to that of previous years : V. aginolyticus is the main species and V cholerae nag is the second (13 %). The maximum chlorophyll biomass was 33 mg/m3 in April as a consequence of the Phaeocystis bloom. Some diatoms maxima appear with Rhizosolenia delicatula in March, Rhizosolenia spp. and Nitzschia in May and Chaetoceros in August. Zooplankton... |
| Tipo: Text |
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| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00006/11718/8385.pdf |
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| Le Fevre-lehoerff, Geneviève. |
| At a neap tide, an attempt was made to follow the quantitative and qualitative nycthemeral variations in a planktonic population under the influence of the tide. Simultaneous study was made of changes in the physical medium and the biological material present. Physical measurements at 4 depths, of salinity, density, and speed and direction of current, were made every hr and eventually correlated with plankton samples made at 2 hourly intervals. Physical results are shown in graphs and tables and an analysis given of the zooplankton studied. Examination of the biovol obtained by sedimentation revealed a greater density of organisms at night, copepods forming the principal component of the plankton. Further studies were made of the copepods, various groups... |
| Tipo: Text |
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| Ano: 1971 |
URL: http://archimer.ifremer.fr/doc/1971/publication-2372.pdf |
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| Registros recuperados: 22 | |
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