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| Registros recuperados: 14 | |
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| Perigó - Arnaud, E.; Montalvo Estévez, J.; Miravet Regalado, M. E.; Enríquez Lavandera, D.; Cobas Gómez, L. S.; Ramírez Stout, O.; Rivas Rodríguez, L.; García Santos, R.. |
| Se presenta un diagnóstico sobre la calidad ambiental de la laguna costera El Doctor a partir de las principales variables físico químicas y microbiológicas indicadoras de la contaminación orgánica, su estado trófico e higiénico sanitario en tres campañas de muestreo realizadas entre febrero de 2006 y mayo y octubre de 2007. La laguna presenta un alto grado de contaminación orgánica, altos valores de nutrientes, así como, elevadas concentraciones de coliformes totales y fecales, y estreptococos fecales, los cuales, se encuentran por encima de los limites establecidos en las normas cubanas de calidad de agua para usos pesquero y recreativo (NC: 22-99 y NC: 25-99). La principal causa de la contaminación de la laguna son los residuales crudos originados por... |
| Tipo: Journal Contribution |
Palavras-chave: Pollution; Pollution; Http://aims.fao.org/aos/agrovoc/c_6077. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/3423 |
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| Sabae, S.Z.; Rabeh, S.A.. |
| This study aims to the evaluation of the microbial quality of the River Nile water at Damietta Branch. Water samples were taken from the branch, during the period from autumn, 2005 till the summer of 2006. Some environmental parameters such as temperature, transparency, depth and pH were monitored. In addition, the bacteriological analyses involved total viable bacterial counts (TVBCs), total coliforms (TC) and estimation of faecal coliforms (FC), faecal streptococci and pathogenic bacteria. The results of physicochemical parameters showed that the temperature values varied from 17°C to 25°C and the transparency from 40cm to 220cm. Whereas, the depths varied from 3m to 25m and pH values from 7.24 to 8.44. The bacteriological analyses showed that TVBCs... |
| Tipo: Journal Contribution |
Palavras-chave: Field Study; Pollution; Pathogenic bacteria; Pollution; Pathogenic bacteria; Http://aims.fao.org/aos/agrovoc/c_6077; Http://aims.fao.org/aos/agrovoc/c_34317. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/1899 |
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| Askar, A.I.; Ibrahim, G.H.; Osman, K.A.. |
| Nonpoint source (NPS) pollution from agriculture is the leading source of impairment to Survey Rivers and lakes. Pesticides are one of the major NPS pollutants that result from agricultural activities. Among those pesticides, is Bromoxynil (BRMX) which is a widely used herbicide. The present study was carried out to determine the capability of selected biological control agents to degrade BRMX at different incubation periods. Microbial degradation of BRMX at the rate of 100 ppm in pure liquid culture media of either seven isolates of bacteria; Azotobacter chroococcum, Azospirillium barasilense, Klebsilense pneumoneae, Pseudomonas cepacia, Pseudomonas fluoresences, Bacillus subtilis, and Bacillus polymyxa or two isolates of fungi; Trichoderma viride and... |
| Tipo: Journal Contribution |
Palavras-chave: Laboratory Study; Biodegradation; Pollution; Biodegradation; Pollution; Http://aims.fao.org/aos/agrovoc/c_9261; Http://aims.fao.org/aos/agrovoc/c_6077. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/2200 |
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| Gabbadon, P.; Banjoo, D.; Bullock, C.; Norville, W.; Sookbir, S.; LLoyd, G.; Ragbirsingh, Y.; Juman, R.; Chin, X.; de Souza, G.; Lall, R.; Rambarath-Parasram, V.; O'Brien-Delpesh, C.. |
| "The Institute of Marine Affairs (IMA) is investigating the impacts of pollution from land-based sources and activities of the Caroni River Basin (CRB) on the marine environment... The project will investigate the types, sources, levels of pollution, fate of pollutants, and potential impacts on the marine environment. In addition, the project will investigate the impacts of physical alterations of habitats caused by land uses in the Caroni River Basin." |
| Tipo: Other |
Palavras-chave: Pollution; Marine environment; River basins; Pollution; Marine environment; River basins; Http://aims.fao.org/aos/agrovoc/c_6077; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_6613. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/2911 |
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| Gnandi, K.; Tobschall, H.J.. |
| Metal concentrations of 37 soil samples taken from mining areas (abandoned mine pits and transport routes) in Kpogamé and Hahotoé (southern Togo) range from 0.2-43 ppm for Cd, 15-115 ppm for Pb, 182-1,029 ppm for Cr, 18-356 ppm for Cu, 15-342 pm for Ni, 90-513 ppm for V, 35-536 ppm for Zn, 80-469 ppm for Zr and 266-3,161 ppm for Sr. The tropical alteration of the ore waste plays an important role in the distribution of trace elements in the studied soils. Because the alteration affects the element mobility, generally old abandoned mining areas, which , together with soils near the transport routes, show a higher degree of contamination. Under low pH and oxidising conditions in studied soils Cd, Ni and Zn are generally easily mobilised and are thus... |
| Tipo: Journal Contribution |
Palavras-chave: Heavy metals; Mining; Phosphorite; Pollution; Heavy metals; Pollution; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_6077. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/2715 |
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| Rodríguez Martínez, R.; Torres Rodríguez, I.; Suárez Melo, Y.; García Fuentes, O.; Beltrán González, J.. |
| The concentration of hydrocarbons of petroleum in marine sediments in areas of industrial, harbour and fishing interest to the N of the island of Cuba, as the bays of Cienfuegos, Port Father, Guantánamo, Matanzas with special emphasis in Sagua La Grande and Havana. The results showed high levels of contamination for these organic compounds in the bay of Havana, with a medium 1 220 mg·kg-1 dry matter. The biggest accumulations were in the creeks of Marimelena and Atarés. A tendency exists to diminish the degree of contamination for petroleum in these sediments. In the bay of Sagua La Grande the concentrations of total hydrocarbons were not high (averague 45 mg·kg-1 dry matter), and it allowed to classify to this ecosystem with very little influenced by... |
| Tipo: Preprint |
Palavras-chave: Pollution; Petroleum hydrocarbons; Coastal zone; Pollution; Http://aims.fao.org/aos/agrovoc/c_6077. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/3564 |
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| Delgado Gómez, Y.; Miravet Regalado, M.E.. |
| La contaminación fecal es un peligro de origen antrópico que amenaza la zona costera fundamentalmente. En Cuba, los esquemas regulatorios para el control de la calidad microbiológica de las aguas de uso recreativo han estado basados en un único “valor límite permisible” que define si un área es apta o no para el baño (NC 22:99). Sin embargo, esta norma no permite evaluar el nivel de peligro, vulnerabilidad y riesgo sanitario al que se expone la población ante un determinado grado de contaminación fecal, por tanto, en este trabajo se propone por primera vez en Cuba, una metodología que permita evaluar el nivel de peligro, vulnerabilidad y riesgo en una zona marino costera ante la contaminación fecal. Según la concentración de coliformes fecales presente se... |
| Tipo: Journal Contribution |
Palavras-chave: Pollution; Pollution; Http://aims.fao.org/aos/agrovoc/c_6077. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/3388 |
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| Regadera, R.; Gómez, Y.; García, E.; Gómez, L.. |
| It is presented an analysis of several indicators of water quality in Santiago de Cuba bay and of the bacteriological state in five of its beaches. Samples were taken in surface and 8 m deep. A low transparency of the waters was detected, associated with high levels of ammonium, total phosphorus and chlorophyll. In surface the dissolved oxygen had high levels, but in 8 m there was anoxia in the most interior stations. The thermotolerant coliforms reached high concentrations in the stations of the central axis, but in the beahes, only El Níspero was not appropriate for direct contact, in accordance with the current cuban standard. By means of a principal components analysis it was determined that high ammonium and total phosphorus concentrations were... |
| Tipo: Preprint |
Palavras-chave: Eutrophication; Nutrients (mineral); Pollution; Eutrophication; Pollution; Http://aims.fao.org/aos/agrovoc/c_2734; Http://aims.fao.org/aos/agrovoc/c_6077. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/3572 |
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| Montalvo, J.F.; García, I.; Loza, S.; Esponda, S. C.; César, M.E.; González de Zaya, R.; Hernández, L.. |
| Entre los años 2001 y 2005, fueron evaluados los contenidos de oxígeno disuelto y de materia orgánica en la fase acuosa de las bahías de Cárdenas, Santa Clara, Puerto de Sagua la Grande, San Juan de los Remedios, Buena Vista, Los Perros, Jigüey y La Gloria. En el Puerto de Sagua la Grande y la zona costera de la bahía de Buena Vista se registraron concentraciones de oxígeno disuelto inferiores al valor de saturación en la época de lluvias. Predominaron los montos de materia orgánica expresados en términos de la demanda bioquímica de oxígeno (DBO5) entre 1,0 -2,0 mgO2/L, típicos de agua marina de calidad dudosa para uso pesquero, según la NC-25:99. Las concentraciones más comunes de la demanda química de oxígeno (DQO) al permanganto en medio alcalino fueron... |
| Tipo: Journal Contribution |
Palavras-chave: Pollution; Pollution; Http://aims.fao.org/aos/agrovoc/c_6077. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/3402 |
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| Registros recuperados: 14 | |
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