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Registros recuperados: 7
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Distribution of economic benefits from the fisheries of Lake Victoria OceanDocs
Abila, R.O.; Odongkara, K.O.; Onyango, P.O..
The Lake Victoria fishery contributes immensely to the socio-economic development of the riparian states. The East African Community has designated the lake basin as an ‘economic growth zone’, with the potential to develop into a major economic region. The fisheries are vital in creating employment opportunities, mostly rural-based, thereby helping to reduce rural-urban migration. Fish is also a rich source of animal protein for human consumption and provides raw material (fishmeal) for processing animal feeds. The fish industry contributes to GDP and has continued to be an important source of foreign exchange earned from fish exports. Besides, the fish industry contributes to the national and local government revenues through levying of various taxes,...
Tipo: Proceedings Paper Palavras-chave: Fishery economics; Fishery management; Fishery policy; Marketing; Resource management; Socioeconomic aspects; Economic benefits; Trade; Riparian zone; Economic analysis; International policy; Exploitation; Resource development; Freshwater fish; Inland fisheries; Inland water environment; Lake fisheries; Lake fisheries; Fishery management; Marketing; Economic analysis; Resource development; Resource management; Trade; Inland fisheries; Inland water environment; Http://aims.fao.org/aos/agrovoc/c_4159; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_4620; Http://aims.fao.org/aos/agrovoc/c_2469; Http://aims.fao.org/aos/agrovoc/c_28018; Http://aims.fao.org/aos/agrovoc/c_6524; Http://aims.fao.org/aos/agrovoc/c_7848; Http://aims.fao.org/aos/agrovoc/c_3873; Http://aims.fao.org/aos/agrovoc/c_3875.
Ano: 2006 URL: http://hdl.handle.net/1834/2128
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Estudios preliminares en un cuerpo de agua dulce de Punta Fort William-Isla Greenwich OceanDocs
Arcos, F..
Durante la Tercera Expedición Ecuatoriana a la Antártida en enero-febrero de 1991, como parte de los estudios de evaluación del impacto ambiental, se ha iniciado un reconocimieno físico, químico y biológico de un cuerpo de agua dulce en Punta Fort Williams, Isla Greenwich, Shetland del Sur. Se escogió un lago formado en una depresión del terreno con aporte de tipo glacial, expuesto al viento por tres de sus lados, poca profundidad por lo que es bién oxigenado y existe disponibilidad de nutrientes por degradación de materia orgánica vegetal proveniente de los alrededores y acarreada por los vientos. El lago es oligotrófico, sin aporte significativo de excretas de aves y mamíferos. Del plancton estudiado se define que hay un importante componente...
Tipo: Journal Contribution Palavras-chave: Biochemistry; Biological surveys; Fresh water; Inland water environment; Freshwater ecology; Biochemistry; Freshwater ecology.
Ano: 1990 URL: http://hdl.handle.net/1834/3871
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L’approche écosystèmique et la gestion par bassin versant: le cas de la Somone OceanDocs
Diop, M.; Konaté, M..
L’eau est l’un des éléments de base de tous les écosystèmes. En fonction du milieu où elles s’écoulent, les ressources hydriques sont plus ou moins importantes, accessibles ou vulnérables. Les caractéristiques de l’eau sont dépendantes du milieu biophysique environnant, mais elles peuvent être fortement modifiées par la présence humaine. En effet, l’eau est une composante fondamentale des activités humaines, que ce soit pour l’alimentation, la production de biens, le commerce ou les loisirs. Ces activités exercent une pression sur les écosystèmes naturels. Elles modifient la ressource hydrique sur le plan quantitatif et qualitatif, entraînant des répercussions plus ou moins importantes sur les écosystèmes touchés et, par conséquent, sur les espèces...
Tipo: Journal Contribution Palavras-chave: Inland water environment; Aquatic environment; Ecosystems; Ecosystems; Inland water environment; Aquatic environment; Http://aims.fao.org/aos/agrovoc/c_2482; Http://aims.fao.org/aos/agrovoc/c_3875; Http://aims.fao.org/aos/agrovoc/c_554.
Ano: 2005 URL: http://hdl.handle.net/1834/2456
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L'importance des zones humides pour la gestion intégrée des ressources naturelles: cas du Delta du Fleuve Sénégal OceanDocs
Diop, M.; Konaté, M..
A l'heure actuelle, de multiples problémes et défis s'opposent à une egstion durable de l'environnement et des ressources naturelles au Snéégal (PNUE/PAM/PAP, 1991) tant le comportement et l'action de l'homme ont complétement rompu les équilibres écologiques au risque de menacer à terme la viabilité des systèmes de productions et des modes de vie (Adrian, 2000). Il est alors de raison de vouloir changer de cap pour l'amélioration de l'environnement, la lutte contre la pauvreté et ldéveloppement durable.
Tipo: Journal Contribution Palavras-chave: Wetlands; Natural resources; Inland water environment; Freshwater ecology; Resource management; Natural resources; Wetlands; Natural resources; Natural resources; Inland water environment; Freshwater ecology; Resource management; Http://aims.fao.org/aos/agrovoc/c_8371; Http://aims.fao.org/aos/agrovoc/c_5091; Http://aims.fao.org/aos/agrovoc/c_5091; Http://aims.fao.org/aos/agrovoc/c_3875; Http://aims.fao.org/aos/agrovoc/c_3104; Http://aims.fao.org/aos/agrovoc/c_6524.
Ano: 2007 URL: http://hdl.handle.net/1834/2358
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Plan directeur de développement forestier pêche et aquaculture continentales OceanDocs
Diouf, P.S.; Kebe, M.; Le Reste, L.; Bousso, T.; Diadhiou, H.D.; Gaye, A.B..
FAO, Rome (Italie);Ministère du Développement et de l'Hydraulique, Dakar (Sénégal)
Tipo: Book Palavras-chave: Development potential; Fisheries; Aquaculture; Marketing; Development projects; Fish consumption; Hydrology; Inland water environment; Aquatic environment; Forests; Socioeconomic aspects; Climatic data; Natural resources; Fresh water; Natural resources; Fisheries; Aquaculture; Marketing; Development projects; Forests; Climatic data; Hydrology; Inland water environment; Aquatic environment; Http://aims.fao.org/aos/agrovoc/c_5091; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_550; Http://aims.fao.org/aos/agrovoc/c_4620; Http://aims.fao.org/aos/agrovoc/c_2229; Http://aims.fao.org/aos/agrovoc/c_3062; Http://aims.fao.org/aos/agrovoc/c_29553; Http://aims.fao.org/aos/agrovoc/c_3731; Http://aims.fao.org/aos/agrovoc/c_3875; Http://aims.fao.org/aos/agrovoc/c_554.
Ano: 1991 URL: http://hdl.handle.net/1834/2886
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The effect of the Mbita Causeway on water currents in the region of Rusinga Channel, Winam Gulf, Lake Victoria: a 3D modelling study with ELCOM OceanDocs
Romero, J.R.; Khisa, P..
The Mbita Causeway in Kenya was constructed in the early 1980’s to link Rusinga Island to the mainland to facilitate the transport of people, goods, and services to the island. One of the effects of the Causeway was to permanently block a secondary connection between Rusinga Channel and the offshore waters of Lake Victoria. This secondary channel may have served as a substantial pathway of exchange between Winam Gulf and Lake Victoria prior to the Causeway. There has been considerable scientific and political debate as to whether decreased flushing within the two bays on either side of the Causeway has occurred and led to poorer lake water quality since the construction of the barrier. In Apr.-May 2005 an intensive field investigation was undertaken to...
Tipo: Proceedings Paper Palavras-chave: Hydrodynamics; Water quality; Channel flow; Development projects; Simulation; Modelling; Flushing; Environmental effects; Water currents; Inland water environment; Hydrodynamics; Http://aims.fao.org/aos/agrovoc/c_3723.
Ano: 2006 URL: http://hdl.handle.net/1834/1473
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The status of persistent organic pollutants in Lake Victoria catchment OceanDocs
Madadi, O.V; Wandiga, S. O; Jumba, I. O..
The use of most organochlorine pesticides has been banned or restricted in the republic of Kenya under the Rotterdam and Stockholm convention due to high levels of persistence in the environment and toxicity to nontarget organisms. Studies conducted in some parts of the country have revealed that residue levels of these compounds are still in the environment. However, the residues of these compounds have not been exhaustively studied in the Lake Victoria catchment area. This study was set to investigate the residues levels of p,p-DDT, o,p’- DDE, p,p-DDD, g-HCH, D-HCH, a-HCH, Aldrin, and Dieldrin, in water samples from Lake Victoria catchment. Samples were collected during the short rain, dry and wet seasons and analysed using gas chromatography equipped...
Tipo: Proceedings Paper Palavras-chave: Pollutants; Catchment area; Pesticides; Chemical pollutants; Toxicity; Freshwater lakes; Pollution effects; Environmental impact; Inland water environment; Pollutant persistence.
Ano: 2006 URL: http://hdl.handle.net/1834/1475
Registros recuperados: 7
Primeira ... 1 ... Última
 

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