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| Registros recuperados: 200 | |
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| Le Dantec, Jean. |
| Nous avons précédemment montré que des diminutions du rendement ostréicole pouvaient être consécutives à des périodes de sécheresse, que les ruissellements dans la baie n'étaient massifs que de novembre à mai inclus par suite des variations du niveau de la nappe phréatique; que les fortes pluies de l'hiver 1960-61 avaient eu pour conséquences d'importants apports d'alluvions et la réapparition sur les terrains ostréicoles d'une couche de vase superficielle appelée localement « barotte », où pullulait une flore benthique très riche, et une revigoration momentanée de l'huître portugaise. Ces constatations nous ont incité à comparer au cours des années dernières l'évolution des chutes météoriques pendant la période novembre-mai et les fluctuations de la... |
| Tipo: Text |
Palavras-chave: Crassostrea angulata; Sel de fer; Mortalité; Pollution; Impact. |
| Ano: 1966 |
URL: http://archimer.ifremer.fr/doc/00039/15068/12402.pdf |
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| Maggi, Pierre. |
| Toxicity of seven emulsifying agents for treating oil spills (ISTPM designation E sub(22), E sub(30), E sub(41), E sub(46), E sub(47), E sub(52) and E sub(53)) was determined using eight marine species (three gastropods, one bivalve, two crustacean and one fish). Results are tabulated as LD sub(50). E sub(47) was least toxic to the species studied, but it could still perhaps harm other plant and animal species. |
| Tipo: Text |
Palavras-chave: Treatment; Pollution; Oil spills; Toxicity. |
| Ano: 1972 |
URL: http://archimer.ifremer.fr/doc/1972/publication-2074.pdf |
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| Soudan, France. |
| Following the Torrey Canyon disaster, attention was directed to finding effective but innocuous means to combat the pollution risk of shipping oil. To introduce the minimum of chemicals into the sea, it was decided to use a little of a strong, but possibly more harmful, substance rather than more of a weaker and less offensive one. Marine life could be affected mechanically, chemically or by removal or dissolved O sub(2). Various products were tested under laboratory conditions for effectiveness, and possible effects on marine life. It is noted that the latter is only a short-term view, and that different results might be obtained using different species as indicators. The range of effectiveness of products was considered. It was concluded that low density... |
| Tipo: Text |
Palavras-chave: Results; Torrey Canyon; Choice; Oil spills; Pollution. |
| Ano: 1972 |
URL: http://archimer.ifremer.fr/doc/1972/publication-2071.pdf |
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| Alzieu, Claude. |
| The necessity to combat oil slicks makes it necessary to assess the relative effectiveness and toxicity of dispersal agents used. This is usually done by using individual or groups of indicator organisms. The theory behind the various approaches is outlined, and some considerations are listed for the choice of technique. 2 organisms were chosen - the Portuguese oyster (Crassostrea), and the phytoplankton alga Phaeodactylum tricornutum Bohlin, on which if feeds - and the oyster closing reaction, and level of inhibition of growth under the influence of irritant products was measured. Methods are described, and the results shown for emulsifying, agglomerating and precipitating products. The results are discussed, and the mode of interference of the products... |
| Tipo: Text |
Palavras-chave: Choice of technique; Phytoplankton; Organisms; Toxicity; Oil spills; Pollution. |
| Ano: 1972 |
URL: http://archimer.ifremer.fr/doc/1972/publication-2073.pdf |
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| Michel, Pierre. |
| Standard methods were used to assess the effectiveness of 101 products for use against oil slicks. Products were emulsifiers, agglomerants or precipitants and were tested against oil from Edjele, Kuwait and Syria. For each kind of product, a review is given of the previous tests, the choice of methods is discussed, the methodology is described, and results are presented and interpreted. In addition, the relationship between physical properties and effectiveness is discussed, with graphical examples and the advantages and disadvantages are indicated. It is concluded that at present no 'miracle' product exists for use in this field. Agglomerating powders would be ideal were it not for problems in putting them to use, and, wind because of the need to use them... |
| Tipo: Text |
Palavras-chave: Efficiency; Choice of products; Oil spills; Pollution. |
| Ano: 1972 |
URL: http://archimer.ifremer.fr/doc/1972/publication-2072.pdf |
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| Vicente, N.; Chabert, D.. |
| The study of variations in the concentration of heavy metals inside a tank filled with the water of a neighbouring lagoon has been carried out since August 1977•The analysis concerned a lagoon station and the bath built for ECOTRON program, closed to this lagoon. They deal with water, molluscs and the sediment. Inside the lagoon station, the tested molluscs are Prosobranch Gastropods : Trochocochlea carinata and inside the basin, cockles : Cerastoderma glaucum. The results point out that the concentration of these heavy metals vary with the tissue in relation with physical and chemical medium parameters, and it can be particularly observed a significative correlation between both the whole concentration of these elements inside the sediment and the... |
| Tipo: Text |
Palavras-chave: Pollution; Métaux lourds; Lagune; Méditerranée; Pollution; Heavy metals; Lagoon Mediterranean sea. |
| Ano: 1979 |
URL: http://archimer.ifremer.fr/doc/00306/41675/40884.pdf |
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| Marchand, Michel; Roucache, J. |
| In October 16, 1976, the tanker "Bohlen" was wrecked in the Mer d'Iroise, at about 35 miles of Brest, and lossed about 7 000 t of Boscan crude oil. The coast of Brittany was polluted by 3 000 t, and 4000 t were dispersed in the marine environment. In July 1977, 23 surface sediment samples were collected to look for the traces of oil spill in the sea bottom, 9 months after the shipwreck. Only one sediment was very iittle polluted by the Boscan crude oil. Elsewhere, two other kinds of oil pollution were observed in sorne sediment samples. Severa! quantitative and qualitative criteria were used to research sorne oil pollution in the marine sediments and to know the origin: hydrocarbon concentrations, ratios total organic extra ct 1 organic carbon,... |
| Tipo: Text |
Palavras-chave: Pollution; Hydrocarbures; Sédiments; « Bohlen »; Pollution; Hydrocarbons; Sediments; "Bohlen". |
| Ano: 1981 |
URL: http://archimer.ifremer.fr/doc/00121/23206/21051.pdf |
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| Registros recuperados: 200 | |
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