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	Provedor de dados OceanDocs (2) Autor Okbah, M.A. (2) Gharib, S.M. (1) Ghobrial, M.G. (1) Soliman, A.M. (1) Palavra-chave Field study (1) Fish ponds (1) Http://aims.fao.org/aos/agrovoc/c_13344 (1) Http://aims.fao.org/aos/agrovoc/c_2929 (1) Http://aims.fao.org/aos/agrovoc/c_5192 (1) Http://aims.fao.org/aos/agrovoc/c_5274 (1) Http://aims.fao.org/aos/agrovoc/c_5804 (1) Nitrogen (1) Nutrients (1) Phosphorus (1) Phytoplankton (1) Water content (1) Water samples (1) Mais... Tipo do documento Journal Contribution (2) Ano 2007 (1) 2005 (1) País Belgium (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Nitrogen and phosphorus species of Lake Burullus Water (Egypt) OceanDocs Okbah, M.A.. Water samples collected from Lake Burullus were analyzed to investigate temporal and spatial variations of phosphorus and nitrogen species during the period from January to October 2003. The concentrations of dissolved inorganic nitrogen (DIN), dissolved organic nitrogen (DON), particulate nitrogen (PN) and total nitrogen (TN) were in the ranges of 4.10-107.51mole l-1 ; 7.43-170.10mole l-1; 9.33-209.4mole l-1 and 51.40-259.0 mole l-1 respectively. DIN, DON and PN species represent 19%, 34% and 47% of the total nitrogen content, respectively. Significant variations for the concentrations of the phosphorus forms have been found in this study. Concentrations of reactive phosphate (PO4), dissolved organic phosphorus (DOP), particulate phosphorus (PP) and... Tipo: Journal Contribution Palavras-chave: Water samples; Water content; Nitrogen; Nutrients; Phosphorus; Http://aims.fao.org/aos/agrovoc/c_5192; Http://aims.fao.org/aos/agrovoc/c_5274; Http://aims.fao.org/aos/agrovoc/c_5804. Ano: 2005 URL: http://hdl.handle.net/1834/1263 Influence of barley straw and submerged macrophytes on fishpond wastewater quality OceanDocs Ghobrial, M.G.; Okbah, M.A.; Gharib, S.M.; Soliman, A.M.. Barley straw has received, recently, considerable attention as an algicide, which could be used to control algal growth in fishponds. It is regarded as cost-effective, user friendly and environmentally sounds. On the other hand, the submerged wetland macrophytes are crucial for the stabilization of clear water state in shallow lakes, by their active production of anti-algal compounds (allelochemicals) through allelopathy. Microcosm experiments using barley straw and the submerged macrophytes: Najas marina L., Potamogeton pectinatus L. and Ceratophyllum demersum L. in culture media with fishpond water were carried out outdoors to simulate the situation as natural as possible. Nutrients concentrations were measured beside the analysis of phytoplankton and... Tipo: Journal Contribution Palavras-chave: Field study; Phytoplankton; Fish ponds; Phytoplankton; Fish ponds; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_2929. Ano: 2007 URL: http://hdl.handle.net/1834/2210 Registros recuperados: 2 Primeira ... 1 ... Última

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