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| Rebzanizahaf, C; Bellan, G; Bakalem, A; Romano, Jc. |
| The impact of pollution on the macrobenthos was studied through a seasonal cycle by analysis of samples taken at 34 stations in the different basins of Algiers harbour (Mustapha, Agha and Vieux Port). Physical and chemical characteristics were measured in the water column (temperature, salinity, seston, dissolved oxygen) and sediment (pH). The faunistic composition of the stations was assessed according to the ecological significance of species or groups of species as determinants of pollution. There were close correlations between the physical and chemical characteristics at che stations and the spatial distribution of species and species assemblages. Seasonal variation in populations was most marked in Mustapha basin, less noticeable in Agha and weak in... |
| Tipo: Text |
Palavras-chave: Macrobenthos; Algiers harbour; Seasonal evolution. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00093/20458/18130.pdf |
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| Naudin, Jj; Cauwet, G; Leveau, M; Lochet, F; Pauc, H; Romano, Jc; Sempere, R. |
| Particulate matter from the bottom nepheloid layer, off the Rhone river mouth was sampled with a newly-designed frame code-named SYMPHY. Several spreading phases of the Rhodanian suspensions on the continental shelf were evidenced by currentmeter records, particulate matter analyses, CTD and nephelometric measurements. These data permitted the study of the mechanisms which control the aging of the suspensions during their transfer to a sea with very small amplitude tides. The bottom nepheloid layer can be defined as a vertical concentration gradient resulting from an equilibrium between the horizontal (Rhodanian inputs) and the vertical (surface nepheloid layer) components of the particulate flux. The variability of this equilibrium, controlled by... |
| Tipo: Text |
Palavras-chave: BOTTOM NEPHELOID LAYER; PARTICULATE MATTER; CURRENT MEASUREMENTS; HYDROLOGY. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/00101/21230/18847.pdf |
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| Compiano, Am; Romano, Jc; Delagiraudiere, I; Laborde, P. |
| Samples of phytoplankton cultures and of suspended particulate matter from continental, brackish and marine waters were examined by HPLC for the monosaccharide content of their hydrolysable sugar fraction. Eight monosaccharides were currently assayed and their weight compared to HPLC-assayed chlorophyll a concentrations. With the exception of oligotrophic waters, these two variables are well correlated in the various prospected environments. Glucose was always the strongly dominant form, not only in fresh and brackish waters but also in marine samples with high phytoplanktonic biomass. If samples are compared on a salinity basis, only four monosaccharides showed significant differences in their relative concentrations, as a consequence of sampling... |
| Tipo: Text |
Palavras-chave: MONOSACCHARIDE; HPLC; PARTICULATE MATTER; SEA WATER; BRACKISH WATER. |
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/00100/21134/18754.pdf |
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| Younes, Wan; Bensoussan, N; Romano, Jc; Arlhac, D; Lafont, Maxime. |
| Between 1996 and 2000, 79 cruises have been achieved following always the same transect between Marseilles and the Rhone river's mouth. While cruising, salinity, temperature and fluorescence of surface waters (1.5 m) were recorded every minute, in association with precise GPS position. The whole set of data. (i.e. 128 measured points per cruise) constitutes the Sorcom series whose synthetic results ate presented here. Despite the high spatial and temporal. variability encountered between two successive cruises, the regularity and duration of the sampling strategy permitted to define coherent spatial zonation and temporal evolutions. In the Cape Couronne vicinity the dynamic of the eastern extension of the dilution plume clearly changes. Westward, waters... |
| Tipo: Text |
Palavras-chave: Rhône; Panache de dilution; Observation à long terme; Fluorescence; Salinité; Rhone river; Dilution plume; Long term observation; Fluorescence; Salinity. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00321/43260/42991.pdf |
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