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	Provedor de dados OceanDocs (3) Colegio de Postgraduados (1) Autor Jumba, I. O. (1) León Villalobos, José María (1) Madadi, O.V (1) Mungai, David (1) Oketch, M. A. (1) Thenya, Thuita (1) Verchot, Louis (1) Wandiga, S. O (1) Wassmann, Reiner (1) Mais... Palavra-chave Catchment area (4) Pollutants (2) Wetlands (2) Análisis multicriterio (1) Area de captación (1) Chemical pollutants (1) Conocimiento local (1) Control aéreo de incendios forestales (1) Deforestation (1) Degradation (1) Edafología (1) Environment management (1) Environmental effects (1) Environmental impact (1) Freshwater lakes (1) Inland water environment (1) Inland waters (1) Land use (1) Local knowledge (1) Maestría (1) Mais... Tipo do documento Proceedings Paper (3) Ano 2012 (1) 2006 (3) País Belgium (3) Mexico (1) Idioma Inglês (3) Espanhol (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Control de incendios forestales con sistemas de captación del agua de lluvia. Colegio de Postgraduados León Villalobos, José María. Las aeronaves se han convertido en el medio más eficaz, rápido y moderno en la lucha contra los megaincendios forestales; el agua, elemento operativo fundamental está limitada en disponibilidad, reduciendo la eficiencia de la labor. Los sistemas de captación del agua de lluvia (SCALL), pueden ser usados para solucionar la escasez de agua en el control aéreo de incendios forestales y su ubicación estratégica en zonas de alta incidencia es primordial para mejorar la eficiencia en el control de incendios y salvaguardar los bosques mexicanos. En este estudio se realizó una evaluación de la aptitud territorial para establecer SCALL en tres municipios del estado de México: Chalco, Tlalmanalco e Ixtapaluca, mediante la selección de cinco variables determinantes:... Palavras-chave: Análisis multicriterio; Control aéreo de incendios forestales; Area de captación; Conocimiento local; Probabilidad de lluvia; Multicriteria analysis; Wildfire fighting; Catchment area; Local knowledge; Precipitacion probability; Edafología; Maestría. Ano: 2012 URL: http://hdl.handle.net/10521/1685 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 Degradation of the riparian wetlands in the Lake Victoria basin - Yala swamp case study OceanDocs Thenya, Thuita; Wassmann, Reiner; Verchot, Louis; Mungai, David. Land degradation is as a result of broad range of scales and factors, which include biophysical, climatic, demographic and socio-economic. The aim of this paper was to provide an analysis of wetland utilisation, ecosystem degradation and their effect on the Lake Victoria (Kenya) ecosystem. This involved analysis of socioeconomic and remote sensed data. The main sources of wetland degradation in the Lake Victoria basin were identified as (1) farming activities, (2) grazing and macrophyte harvesting and (3) coupled with catchment degradation-deforestation. These factors were closely related to the demographic dynamics and unsustainable land utilisation practices. Socio-economic data provided valuable insight on the pattern of wetland utilisation and possible... Tipo: Proceedings Paper Palavras-chave: Riparian environments; Degradation; Wetlands; Inland waters; Catchment area; Remote sensing; Environmental effects; Socioeconomic aspects; Resource development; Sediment transport; Silting; Water pollution; Wetlands; Deforestation; Natural resources; Utilization; Land use; Pollutants. Ano: 2006 URL: http://hdl.handle.net/1834/5313 The potential role of constructed wetlands in protection and sustainable management of lake catchments in Kenya OceanDocs Oketch, M. A.. Constructed wetlands are man-made ecosystems, which are specially designed for treatment of wastewater and non-point source pollution. Constructed wetland technology is gaining popularity due to its economically and environmentally sound attributes as a wastewater management option. Freshwater lakes in Kenya are under threat from degradation as human populations in the catchment areas increase, demands for natural resource extraction grow and urbanization and industrialization intensify. Consequently, there is increased surface runoff, causing sedimentation and eutrophication and ultimately deterioration of water quality, habitats and biodiversity. This trend requires integrated and sustainable water resource management strategies. Strategies for... Tipo: Proceedings Paper Palavras-chave: Waste water; Wetlands; Catchment area; Resource conservation; Environment management; Resource management; Resource conservation; Waste water; Resource conservation; Resource management; Resource conservation. Ano: 2006 URL: http://hdl.handle.net/1834/1470 Registros recuperados: 4 Primeira ... 1 ... Última

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