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| Gaudy, R; Pagano, M. |
| The zooplankton of an eutrophic brackish lagoon (Etang de Berre), near Marseille (France) was studied during an annual cycle. It was characterized by large populations of a pelagic copepod (Acartia tonsa ). Grazing on natural particles by this species was investigated. Adults were able to use an extended range of particle sizes, but showed selectivity for particles concentration was observed (14 mu m). Temperature and particles concentration appear to modify the selectivity behavior. Juvenile stages could also catch particles of various size but did not show the same selectivity for the peak particles as adults. Daily food ration was high comparatively to open-sea copepods. Taking into account several results obtained on food ration, egg production and... |
| Tipo: Text |
Palavras-chave: Copepoda; Lagoons; Energy budget; Seasonal variations; Particle concentration; Zooplankton; Food availability; Temperature effects; Nutrition. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/acte-1526.pdf |
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| Jin, Binming. |
| The concentrations, accumulation and sources of 15 polycyclic aromatic hydrocarbons (PAHs) had been studied or evaluated in the surface layer sediments of Taizhou Bay, China. It showed that the concentrations of PAHs ranged from 85.4 to 167.6 ng/g (averaged 138.62 ng/g), and the highest level was found in Jiao Jiang Dock. Percentages of 2-, 3-, 4-, 5- and 6-cyclic aromatic hydrocarbons were 7.8 %, 42.1 %, 33.3 %, 9.6 % and 7.2 % respectively. The accumulation indices of PAHs ranged from 532.7 to 1068.9 (averaged 807.5), and the index of Phenanthrene was the highest (122.7), while that of Benzo (a) Pyrene was the lowest (2.7) among them. In Taizhou Bay, PAHs in surface layer sediments came mainly from coal burning, partly from direct pollution of petroleum... |
| Tipo: Journal Contribution |
Palavras-chave: Sediments; Particle concentration. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/5869 |
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