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| Registros recuperados: 29 | |
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| Radwan, A.M.; Khalil, M.K.; El-Moselhy, K.M.. |
| Twelve samples were collected from the surface sediments of lagoon and adjacent Mediterranean Sea. Samples were analyzed for grain size, total organic carbon (TOC), total carbonate (CaCO3), various forms of phosphorus and heavy metals (Fe, Mn, Zn, Cu, Ni, Co, Cd and Pb). The results indicated that the sediments were composed of sand, silt and clay enriched with carbonate (1.95 – 34.1%) and total organic carbon (0.06 and 3.62%). The total-P content ranged between 58 and 1186 μg/g, and the fraction associated with apatite minerals (PHCl) was the dominant (it constitutes about 50 – 73% of TP) implying that it was the main storage of phosphate. The various P phases demonstrated significant positive correlation with mean size, silt, clay, TOC, CaCO3 and TP,... |
| Tipo: Journal Contribution |
Palavras-chave: Field Study; Sediments; Heavy metals; Lagoons; Heavy metals; Http://aims.fao.org/aos/agrovoc/c_2223. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/1888 |
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| Sghaier, Y. R.; Zakhama-Sraieb, R.; Charfi-Cheikhrouha, F.. |
| Two sampling stations were selected in order to assess the response of the seagrass to lagoon conditions. Leaf growth was estimated using Zieman method and rhizome production was evaluated by marking rhizome terminals. The vegetative development of C. nodosa inside the lagoon at the limit of its distribution is different from that observed close to the communication channel with the sea. The growth of C. nodosa show a clear unimodal cycle in the two stations reaching maximum leaf development in summer. Shoot density decreased from 915 to 500 shoot m-2 from the communication channel toward the lagoon. The average total biomass varied between 241.6 ± 34 g DW m-2 and 413.8 ± 46 g DW m-2. Leaf plastochrone interval varied seasonally with an annual average of... |
| Tipo: Journal Contribution |
Palavras-chave: Salinity; Biomass; Seagrass; Lagoons; Water temperature; Lagoons; Salinity; Biomass. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/5305 |
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| Falk, T.M.; Teugels, G.G.. |
| The West African coastal zone is rich in estuaries and lagoons. Estuaries are abundant in the area from the mouth of Senegal to Guinea (e.g., Sine Saloum, Casamance); lagoons are generally present from Cote d'Ivoire to the Niger Delta in Nigeria (e.g., Ebrie Lagoon, Porto Novo Lagoon, Lagos Lagoon). Because of their important diversity, it is difficult to give their physical and biological definitions. They are all, however, characterized by a typical and rich fish species composition |
| Tipo: Proceedings Paper |
Palavras-chave: Fish species; Coastal zone; Lagoons; Estuaries. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/737 |
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| Hahn,Norma Segatti; Almeida,Vera Lúcia Lescano de; Luz,Karla Danielle Gaspar da. |
| Hoplosternum Uttorale (Hancock, 1828) is an abundant species in the lagoons of the upper Paraná river floodplain. This species was sampled in Patos and Guaraná lagoons in the flood period (November/92-May/93) and low water period (June-October/93). To analyse food contents in the diet were analysed stomach of 91 adults. Twenty seven food items were recorded, among them, Testaceae, Nematoda, microcrustaceans, quironomids and organic detritus were predominant. These items allows to characterize the species as bentivore. To study feeding activity were analized 565 adults stomach contents. Food intake was more intense during flooding. Considering diel variation, the species started to eat during dusk, increasing during night, stopping to eat during daytime. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Siluriformes; Callichthyidae; Hoplosternum Uttorale; Feeding; Diel cycle; Lagoons. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000100005 |
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| Registros recuperados: 29 | |
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