Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 6
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Effects of physical mixing on the environment of satellite lakes and dams of lake Victoria, Kenya OceanDocs
Guya, F.; Wakwabi, E.; Jembe, T.; Osumo, W.; Sitoki, L.; Ogutu, Z..
In the Lake Victoria (Kenya) catchment are found several small lakes and dams. The satellite lakes and dams are important aquifers and buffer zones for the lake. Besides the water bodies are important water sources both for livestock and domestic use. A study conducted in the water bodies between January 2003 and December 2004 showed that effects of eutrophication are wide spread in the lakes and dams. An investigation of primary productivity and effects of physical mixing and material transport was done. In Lake Sare, Lake Victoria waters are transported to the satellite lake during both day and night through Goye causeway that connects the two. The water bodies have higher rates of primary productivity than Lake Victoria. Spatial extent of oxygen...
Tipo: Proceedings Paper Palavras-chave: Dams; Eutrophication; Water reservoirs; Inland waters; Water bodies; Eutrophication; Primary production; Lake basins; Water mixing; Artificial lakes; Oxygen depletion; Endemic species; Pollution effects; Eutrophication; Dams; Http://aims.fao.org/aos/agrovoc/c_2734; Http://aims.fao.org/aos/agrovoc/c_2121.
Ano: 2006 URL: http://hdl.handle.net/1834/1494
Imagem não selecionada

Imprime registro no formato completo
Evaluation de la qualité des eaux littorales de la France métropolitaine pour l'élément de qualité Phytoplancton dans le cadre de la DCE. Etat des lieux des règles d’évaluation, et résultats pour la période 2007‐2012. Tome 1 ‐ Etat des lieux, méthodes et synthèse des résultats ArchiMer
Belin, Catherine; Lamoureux, Alice; Soudant, Dominique.
Ce rapport en deux tomes détaille les résultats de l’évaluation, avec les règles de la DCE (Directive Cadre sur l’Eau), de l’élément de qualité phytoplancton dans les masses d’eau de la France métropolitaine. Cette évaluation est réalisée à partir des données acquises sur la période 2007-2012. Le tome 1 contient également un état des lieux des grilles d’évaluation de l’indicateur phytoplancton qui sont applicables en 2014 pour les eaux littorales, et replace cette évaluation dans son contexte réglementaire, en rappelant les exigences de la DCE pour l’élément de qualité phytoplancton, et en donnant des informations sur l'historique et l’avancement des travaux d’inter-calibration et l’état des décisions au niveau européen. Il fait le point sur l’avancement...
Tipo: Text Palavras-chave: DCE; Phytoplancton; Évaluation qualité; Masses d’eau; Métriques d’évaluation; Grilles d’évaluation; Valeurs de référence; WFD; Phytoplankton; Quality assessment; Water bodies; Evaluation metrics; Evaluation grids; Reference values.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00394/50490/51227.pdf
Imagem não selecionada

Imprime registro no formato completo
Evaluation de la qualité des eaux littorales de la France métropolitaine pour l'élément de qualité Phytoplancton dans le cadre de la DCE. Etat des lieux des règles d’évaluation, et résultats pour la période 2007‐2012. Tome 2 ‐ Résultats détaillés : fiches par masse d’eau et éléments d’expertise ArchiMer
Belin, Catherine; Lamoureux, Alice; Soudant, Dominique.
Ce rapport en deux tomes détaille les résultats de l’évaluation, avec les règles de la DCE (Directive Cadre sur l’Eau), de l’élément de qualité phytoplancton dans les masses d’eau de la France métropolitaine. Cette évaluation est réalisée à partir des données acquises sur la période 2007-2012. Ce rapport contient également un état des lieux des grilles d’évaluation de l’indicateur phytoplancton qui sont applicables en 2014 pour les eaux littorales, et replace cette évaluation dans son contexte réglementaire, en rappelant les exigences de la DCE pour l’élément de qualité phytoplancton, et en donnant des informations sur l’avancement des travaux d’inter-calibration et l’état des décisions au niveau européen. Enfin il fait le point sur l’avancement des...
Tipo: Text Palavras-chave: DCE; Phytoplancton; Évaluation qualité; Masses d’eau; Métriques d’évaluation; Grilles d’évaluation; Valeurs de référence; WFD; Phytoplankton; Quality assessment; Water bodies; Evaluation metrics; Evaluation grids; Reference values.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00394/50492/51228.pdf
Imagem não selecionada

Imprime registro no formato completo
Macrophytes of Lake Victoria and succession after invasion of Water Hyacinth OceanDocs
Omondi, R.; Kusewa, Mwende.
The distribution of Lake Victoria (Kenya) macrophytes is described. Succession of macrophytes in the lake became more dramatic and dynamic after invasion of water hyacinth. The weed pushes and smothers other free-floating macrophytes like Pistia stratiotes. It then provides substrates for the emergent Vossia cuspidata, which later reduces its population by competition for light and nutrients. The noxious weed is believed to have led to extinction of Azolla nilotica in the lake.
Tipo: Proceedings Paper Palavras-chave: Aquatic plants; Ecological succession; Introduced species; Species extinction; Inland waters; Water reservoirs; Geographical distribution; Emergent vegetation; Competition; Water bodies; Aquatic plants; Water hyacinth; Http://aims.fao.org/aos/agrovoc/c_559; Http://aims.fao.org/aos/agrovoc/c_15267.
Ano: 2006 URL: http://hdl.handle.net/1834/1496
Imagem não selecionada

Imprime registro no formato completo
Measuring the Contribution of Water and Green Space Amenities to Housing Values: An Application and Comparison of Spatially Weighted Hedonic Models AgEcon
Cho, Seong-Hoon; Bowker, James Michael; Park, William M..
This study estimates the influence of proximity to water bodies and park amenities on residential housing values in Knox County, Tennessee, using the hedonic price approach. Values for proximity to water bodies and parks are first estimated globally with a standard ordinary least squares (OLS) model. A locally weighted regression model is then employed to investigate spatial nonstationarity and generate local estimates for individual sources of each amenity. The local model reveals some important local differences in the effects of proximity to water bodies and parks on housing price.
Tipo: Journal Article Palavras-chave: Hedonic model; Locally weighted regression; Park; Spatial; Water bodies; Resource /Energy Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/8630
Imagem não selecionada

Imprime registro no formato completo
Uso do Automated Water Extraction Index modificado para análise da redução do número de corpos d'água em áreas de expansão da cana-de-açúcar: um estudo de caso em Álvares Florence-SP Repositório Alice
MILANI, F. C. C.; PORTINHO, J. L.; LOEBMANN, D. G. dos S. W.; VICENTE, L. E..
Abstract: This work aims to analyze the reduction of water bodies number by the expansion of sugarcane crop advancement in Álvares Florence - SP between 2006 and 2017. The land use and land cover information were obtained from MapBiomas, allowing the comprehension of the changes that occurred in landscape. The identification of water bodies happened through the application of modified AWEInsh in Landsat-5 TM and Landsat-8 OLI images of 2006, 2010, 2015 and 2017. As results, it was observed the sugarcane expansion of 10,000 ha. It was also noted that there is an association between sugarcane activity and the reduction of number of water bodies in landscape, that may cause the habitat loss for various species.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Water bodies; AWEI; Landscape; Cana de Açúcar; Uso da Terra; Sugarcane; Body water; Land use; Environmental impact.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1119137
Registros recuperados: 6
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional