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	Provedor de dados OceanDocs (5) Autor Ammar, M.S.A. (5) Mahmoud, M.A. (2) Billinghurst, Z. (1) Emara, A.M. (1) Ghobashi, A.A. (1) Müller, I.M. (1) Müller, W.E.G. (1) Omran, M.A. (1) Perovic, S. (1) Shaaban, A.M. (1) Wiens, M. (1) Mais... Palavra-chave Coral reefs (3) Http://aims.fao.org/aos/agrovoc/c_1880 (2) Acanthaster planci (1) Artificial coral reefs (1) Biology Study (1) Biomarkers (1) Chemical and Pollution Studies- Monitoring (1) Coral Reefs (1) Distribution (1) Field Study (1) Http://aims.fao.org/aos/agrovoc/c_35773 (1) Http://aims.fao.org/aos/agrovoc/c_35986 (1) Http://aims.fao.org/aos/agrovoc/c_3719 (1) Http://aims.fao.org/aos/agrovoc/c_6259 (1) Http://aims.fao.org/aos/agrovoc/c_6926 (1) Hurghada (1) Hydrocarbons (1) Model (1) Outbreak (1) Phosphates (1) Mais... Tipo do documento Journal Contribution (5) Ano 2007 (2) 2006 (1) 2005 (2) País Belgium (5) Idioma Inglês (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última A new innovated and cheep model in building artificial reefs OceanDocs Mahmoud, M.A.; Ammar, M.S.A.. A novel and cheep approach for building artificial reefs was designed in such a way that sediments in an area of high sedimentation rate will be utilized in building the artificial substrate with no further sediment accumulation afterwards. The model consists of several steel cylinders which are soldered together in such a way to form a reef flat, a gentle slope and a steep slope, with two layers of narrow opening meshes (a lower plastic and an upper metallic one). Within a short periode (3 months), a substrate layer of a total of ~ 1 cm was formed between the two meshes, this layer increased to ~2 cm after 9 months. Transplants of the three species Stylophora pistillata, Echinopora gemmacea and Montipora spongiosa grow better when the attaching surface is... Tipo: Journal Contribution Palavras-chave: Coral reefs; Artificial coral reefs; Transplantation; Substrate; Model; Sedimentation Sediment transport Artificial reefs. Ano: 2005 URL: http://hdl.handle.net/1834/1298 Cell culture from two red sea benthic invertebrates: a case study on the soft octocorals dendronephthya klunzingeri and anthelia glauca OceanDocs Ammar, M.S.A.; Emara, A.M.; Perovic, S.; Wiens, M.; Billinghurst, Z.; Müller, I.M.; Müller, W.E.G.. Primmorphs were obtained from single cells of both coral species Dendronephthya klunzingeri and Anthelia glauca following incubation for three or four days during 2001. Both ultraviolet light (UVB; peak of emission of 320 nm) and visible light (wavelength between 400 and 520 nm with a maximum at 480 nm) were applied to the primmorphs as stressors. The following incubation probes have been isolated from D. klunzingeri and were used to monitor the expression of the respective genes in the homologous cell system; the heat-shock protein HSP90 (to monitor general stress responses), the histone H4cDNA (to monitor the cell cycle/proliferation) and the UVS-related protein (response to ultraviolet light) from D. klunzingeri. The data show that the steady state... Tipo: Journal Contribution Palavras-chave: Biology Study; Biomarkers; Proteins; Proteins; Http://aims.fao.org/aos/agrovoc/c_6259. Ano: 2007 URL: http://hdl.handle.net/1834/2218 Effect of physico-chemical factors and human impacts on coral distribution at Tobia Kebir and Sharm el Loly, Red Sea, Egypt OceanDocs Ammar, M.S.A.; Mahmoud, M.A.. Using SCUBA equipment and the line intercept transect (LIT), the effect of physical factors and human impacts on coral distribution were studied in two Red Sea sites (Sharm El Loly and Tobia Kebir) throughout the period from September, 2003 to October, 2004. The percentage cover of coral species in Northern Sharm El Loly was higher than in Tobia Kebir which might be attributed to optimum temperature and better light intensity. Diving, swimming, boat anchoring and fish feeding by divers are the main human impacts decreasing the percentage cover of corals at Tobia Kebir but fishing seems to have no role due to its limited level. The lower recorded amount of dead corals at Sharm El Loly though it is highly affected by fishing boats, is due to the fact that... Tipo: Journal Contribution Palavras-chave: Chemical and Pollution Studies- Monitoring; Coral reefs; Sedimentation; Distribution; Coral reefs; Distribution; Sedimentation; Http://aims.fao.org/aos/agrovoc/c_1880; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_6926. Ano: 2006 URL: http://hdl.handle.net/1834/1457 Recovery probabilities of coral reef communities after Acanthaster planci infestation: a case study at Shabror umm gam'ar, Hurghada, Red Sea, Egypt OceanDocs Ammar, M.S.A.. Recovery patterns of coral reef benthic communities were estimated by linear extrapolation after Acanthaster planci outbreak of 1998 at Shabror Umm Gam'ar, Hurghada of the Egyptian Red Sea. The significance of using linear extrapolation was tested in a range of ten sites by comparison with the actual average yearly recovery rates. A total of 15 permanent transects, each is 10m long, were monitored at 10m and 12m depths in both Shabror Umm Gam’ar and the ten selected sites. The recovery rate estimated by linear extrapolation did not significantly differ from the recovery rate of stony corals in the ten selected sites. Moreover, an error of +7.69% to +17.5% increase in the extrapolated recovery rate exists and should be considered while handling the... Tipo: Journal Contribution Palavras-chave: Coral Reefs; Acanthaster planci; Outbreak; Recovery; Hurghada; Red Sea Benthic environment Coral reefs Benthic environment http://aims.fao.org/aos/agrovoc/c_877. Ano: 2005 URL: http://hdl.handle.net/1834/1297 Status of coral reef affected by different impacts in some sites of the red sea OceanDocs Ammar, M.S.A.; Ghobashi, A.A.; Omran, M.A.; Shaaban, A.M.. Using Using SCUBA diving, surveying the coral reef communities at four sites, Red Sea Egypt was done. These sites are: Ras El Behar (polluted by petroleum oil), El-Hamraween (impacted by phosphate shipping), Shabrour Umm Gam’ar (harmed by recreational activities and has been suffering from the outbreak of Acanthaster planci during 1998) and Kalawy (a control site). The skeletal growth of the coral Stylophora pistillata was promoted greatly at the expense of other corals, in presence of chronic oil pollution (Ras El-Behar). In contrast, this species was completely suppressed in presence of phosphate and sulphur enrichment. Petroleum oil led to coral scarcity, space monopolization by one coral and increased sea urchins and algae. Coral reefs enriched with... Tipo: Journal Contribution Palavras-chave: Field Study; Coral reefs; Hydrocarbons; Phosphates; Coral reefs; Hydrocarbons; Phosphates; Http://aims.fao.org/aos/agrovoc/c_1880; Http://aims.fao.org/aos/agrovoc/c_3719; Http://aims.fao.org/aos/agrovoc/c_35986. Ano: 2007 URL: http://hdl.handle.net/1834/1909 Registros recuperados: 5 Primeira ... 1 ... Última

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