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	Provedor de dados OceanDocs (3) Autor Benítez, R. (1) Chouba, L. (1) El-Moselhy, K.M. (1) Ennouri, R. (1) Kraeim, M.M. (1) Montoya, W. (1) Peña, E.J. (1) Mais... Palavra-chave Bioaccumulation (3) Http://aims.fao.org/aos/agrovoc/c_32389 (3) Heavy metals (2) Algae (1) Biological stress (1) Chemistry Studies (1) Copper (1) Estuaries (1) Http://aims.fao.org/aos/agrovoc/c_15490 (1) Http://aims.fao.org/aos/agrovoc/c_16061 (1) Http://aims.fao.org/aos/agrovoc/c_1868 (1) Http://aims.fao.org/aos/agrovoc/c_2223 (1) Http://aims.fao.org/aos/agrovoc/c_258 (1) Http://aims.fao.org/aos/agrovoc/c_2673 (1) Http://aims.fao.org/aos/agrovoc/c_35790 (1) Http://aims.fao.org/aos/agrovoc/c_39038 (1) Http://aims.fao.org/aos/agrovoc/c_4751 (1) Http://aims.fao.org/aos/agrovoc/c_6077 (1) Http://aims.fao.org/aos/agrovoc/c_7834 (1) Indicator species (1) Mais... Tipo do documento Journal Contribution (2) Conference Material (1) Ano 2008 (1) 2006 (2) País Belgium (3) Idioma Espanhol (1) Francês (1) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Evaluación de la tasa fotosintética del alga verde Rhizoclonium riparium (Roth) Kützing ex Harvey, expuesta a cobre y su uso como indicador de contaminación por metales en aguas estuarinas OceanDocs Montoya, W.; Peña, E.J.; Benítez, R.. Algae have been used as bioindicators by having several advantages such as they have short life cycles, they can take up nutrients directly from water, they are generally easy to collect in sufficient amounts from various habitats; and they readily accumulate compounds present in seawater, making tissue analyses reliable indicators of water quality. In order to evaluate the bioremoval capability of the green alga Rhizoclonium riparium, the photosynthetic responses to heavy metal pollution under different sublethal concentrations of copper was assessed. Photosynthetic rates were significantly low (p <0.05) at low copper concentrations, between (0.01 y 10 mg/l). Maximum photosynthetic values were shown at 30 y 60 mg/l and almost cero at 150 mg/ l of Cu.... Tipo: Conference Material Palavras-chave: Heavy metals; Biological stress; Algae; Indicator species; Pollution; Bioaccumulation; Copper; Water quality; Estuaries; Heavy metals; Pollution; Bioaccumulation; Copper; Water quality; Estuaries; Algae; Indicator species; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_6077; Http://aims.fao.org/aos/agrovoc/c_32389; Http://aims.fao.org/aos/agrovoc/c_1868; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_258; Http://aims.fao.org/aos/agrovoc/c_35790. Ano: 2006 URL: http://hdl.handle.net/1834/2256 Bioaccumulation of mercury in some marine organisms from Lake Timsah and Bitter Lakes (Suez Canal, Egypt) OceanDocs El-Moselhy, K.M.. The present work is devoted to determine the level of total mercury in the different tissues of fish Mugil seheli, crab Portunus pelagicus, shrimp Metapenaeus stebbingi, and bivalves Paphia undulata and Gafrarium pectinatum collected from Lake Timsah and Bitter Lakes during spring 2003. In addition, factors affecting the accumulation of mercury in these organisms were studied. Levels of Hg in the edible parts of the investigated organisms showed the ranges 2.62 – 25.45 and 0.94 – 7.94 ng/g wet wt. in fish, 16.02 – 117.26 and 9.86 – 64.18 ng/g wet wt. in crab, 4.55 – 14.67 and 5.76 – 15.58 ng/g wet wt. in shrimp, and 1.06 – 36.31 and 5.38 – 69.59 ng/g wet wt. in bivalves from Lake Timsah and Bitter Lakes, respectively. High accumulation of Hg was recorded... Tipo: Journal Contribution Palavras-chave: Chemistry Studies; Mercury; Bioaccumulation; Marine organisms; Heavy metals; Bioaccumulation; Mercury; Http://aims.fao.org/aos/agrovoc/c_32389; Http://aims.fao.org/aos/agrovoc/c_4751. Ano: 2006 URL: http://hdl.handle.net/1834/1451 Evaluation de la contamination chimique par les métaux traces (Cd, Pb, Hg et Zn) du zooplancton et de la sardinelle <Sardinella aurita>dans le golfe de tunis OceanDocs Ennouri, R.; Chouba, L.; Kraeim, M.M.. La présente étude a pour but de déterminer l’organotropisme de quatre métaux traces (Cd, Pb, Hg et Zn) ainsi que leurs concentrations dans le zooplancton et dans trois organes (muscle, foie et branchies) de la sardinelle (Sardinella aurita) provenant du golfe de Tunis. Les résultats ont montré que les concentrations moyennes des quatre métaux dosés (Cd, Pb, Hg et Zn) sont plus élevées dans la sardinelle que dans le zooplancton. Ceci est dû à la bioamplification de ces éléments dans la sardinelle qui occupe un niveau trophique élevé de la chaîne alimentaire marine. Pour le Pb, le Hg et le Zn, les teneurs le plus élevées ont été enregistrées dans les branchies de la sardinelle, alors que le Cd est concentré davantage au niveau du foie. Les concentrations... Tipo: Journal Contribution Palavras-chave: Bioaccumulation; Marine pollution; Pollution indicators; Trace elements; Zooplankton; Sardinella aurita; Bioaccumulation; Zooplankton; Sardinella aurita; Trace elements; Http://aims.fao.org/aos/agrovoc/c_32389; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_39038; Http://aims.fao.org/aos/agrovoc/c_7834. Ano: 2008 URL: http://hdl.handle.net/1834/3707 Registros recuperados: 3 Primeira ... 1 ... Última

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