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	Provedor de dados OceanDocs (3) Autor El-Sarraf, W.M. (3) El-Shaarawy, G. (1) Taha, O.E. (1) Palavra-chave Accumulation (2) Algae (1) Bioaccumulation (1) Biochemical composition (1) Chloroyhyll-a (1) Http://aims.fao.org/aos/agrovoc/c_4610 (1) Marine environment (1) Photosynthesis Chlorophylls Copper Photosynthesis Copper Chlorophylls http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_1577 (1) Mais... Tipo do documento Journal Contribution (3) Ano 1995 (2) 1994 (1) País Belgium (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Chemical analysis of some macrophytes in Mariut and Edku lakes, Egypt OceanDocs El-Sarraf, W.M.. Results of the investigation carried out in Lakes Mariut and Edku revealed that the trace metals concentrations in ceratophyllum demersum is relatively higher than that in Potamogeton pectinatus. The protein and trace metals in macrophytes collected from unpolluted areas is lower thjan that form polluted ones. Eichhornia crassipes can have a restricted role for the treatment of lake water. In Lake Edku, the results of chemical composition of sediments agree with the previous studies. The trace metal content of C. demersum was higher than that of P. pectinatus. The higher organic carbon level was recorded in stems of submerged plants and in leaves of floating ones. On the other hand, the high concentration of trace metal was observed in leaves of submerged... Tipo: Journal Contribution Palavras-chave: Accumulation; Marine environment; Marine environment; Http://aims.fao.org/aos/agrovoc/c_4610. Ano: 1995 URL: http://hdl.handle.net/1834/1244 Chemical composition of some marine algae from the mediterranean sea of alexandria, egypt OceanDocs El-Sarraf, W.M.; El-Shaarawy, G.. No abstract is included Tipo: Journal Contribution Palavras-chave: Accumulation; Bioaccumulation; Biochemical composition; Algae; Bioaccumulation. Ano: 1994 URL: http://hdl.handle.net/1834/1243 Effects of copper on photosynthesis activity and chlorophyll-a content of chaetoceros radicans schutt OceanDocs Taha, O.E.; El-Sarraf, W.M.. Chaetoceros radicans was selected to test the effect of copper concentrations of 0.001, 0.005, 0.01, 0.05, 0.1 and 0.5 ppm for 6 days on the photosynthetic activity and chlorophyll-a content under laboratory conditions. The photosynthetic activity decreased with time of exposure and copper concentration. The control photosynthetic activity reached a maximum value at 120 hours and chlorophyll-a at 72 hours. Chaetoceros radicans cultures treated by copper showed a slight decrease in its photosynthetic activity and chlorophyll-a at levels 0.001 and 0.005 ppm, while they rapidly decreased at higher copper concentrations. Tipo: Journal Contribution Palavras-chave: Chloroyhyll-a; Photosynthesis Chlorophylls Copper Photosynthesis Copper Chlorophylls http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_1577. Ano: 1995 URL: http://hdl.handle.net/1834/1242 Registros recuperados: 3 Primeira ... 1 ... Última

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