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| 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 |
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| Abdel-Halim, A.M.; Gharib, S.M.. |
| Species composition, abundance, and phytoplankton biomass in Lake Nasser were studied during the highest flood season in autumn 1999, and were supported by some physico-chemical environmental parameters. The nutrient salts levels were low to medium, with ranges of 0.96-9.92 g/L for nitrite, 20.14-72.14 g/L for ammonia, complete depletion -27.69 g/L for phosphate, and 5.83-9.00 g/L for silicate. A total of 71 taxa were identified, of which 46% were chlorophytes, 26% bacillariophytes and 22% cyanophytes. Phytoplankton abundance and biomass values were higher in the northern stations than in the southern, but were lower than previously reported, indicating approaching from oligomesotrophic status, with,respectively, means of 108.9 x 104 unit/L and 1.18... |
| Tipo: Journal Contribution |
Palavras-chave: Environmental Studies; Phytoplankton; Phytoplankton; Http://aims.fao.org/aos/agrovoc/c_13344. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/1454 |
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