Consulta: subjectFacets:"Brackishwater pollution"
Registros recuperados: 10
Data/hora: 17/06/2024 04:40:41

Ecotoxicology assay for the evaluation of environmental water quality in a tropical urban estuary
Provedor de dados: 42
Autores: NILIN,JEAMYLLE; SANTOS,ANDERSON A.O.; NASCIMENTO,MEGGIE K.S.
Abstract Most studies evaluating the impacts of river pollution in the semi-arid region of Brazil have been geared towards physiochemical analyses, and investigations of the adverse effects of water pollution on associated organisms are scarce. This study aimed to evaluate the water quality in the Poxim river estuary in Aracaju, Sergipe throughout the dry and rainy season by evaluating the survival of the microcrustacean Mysidopsis juniae and physicochemical analyses. The evaluation of physiochemical parameters revealed a decrease in dissolved oxygen content in the rainy season. However, there was a significant reduction in microcrustacean survival in samples during the dry season, when the river flow is reduced and effluents become concentrated. These...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poxim River; Sergipe; Mysidopsis juniae; Basic sanitation; Acute toxicity; Brackishwater pollution.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100604

Milieu vivant: Synthese des discussions
Provedor de dados: 5
Autores: Retiere, C.
After a general note the author reports the effects of pollutants in organisms, in particular, sublethal effects and bioaccumulation.
Tipo: Text
Palavras-chave: Estuarine organisms; Sublethal effects; Environmental impact; Estuaries; Bioaccumulation; Pollution effects; Brackishwater pollution.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1311.pdf

Chitin/toxicant interactions and microbial degradation within estuarine ecosystems.
Provedor de dados: 5
Autores: Portier, R; Meyers, S.
The environmental effect and fate of several agricultural and industrial source toxicants were evaluated in controlled laboratory microcosm systems in the presence of the aminopolysaccharide polymer, chitin. Toxicants examined included methyl parathion, phenol, pentachlorophenol, 2,4 dichlorophenol, 1,2 dichloroethane and Kepone. Microcosm operating parameters, including pH/Eh, salinity, temperature, flow rate and sediment/water interface conditions, were based on comparable in situ measurements. Fate analysis predictions were based on mineralization of the parent toxicant compound as measured by chromatographic analysis or super(14)CO sub(2) expiration. Chitin, amended to continuous flow microcosms, promoted either cometabolic or cooxidative...
Tipo: Text
Palavras-chave: Controlled conditions; Chemical pollutants; Industrial wastes; Pesticides; Metabolism; Food webs; Biodegradation; Ecosystems; Microorganisms; Environmental effects; Brackishwater pollution; Estuaries; Toxicants; Chitin.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1011.pdf

Evaluation des apports fluviatiles dans l''estuaire de la Seine
Provedor de dados: 5
Autores: Avoine, J.
Economic activities and urbanization along the Seine watershed, are the main factors of increased river discharge with natural deposits. A long term supervision of this river has allowed the assessment of the liquid flow rate, the solid load, and the metallic pollution.
Tipo: Text
Palavras-chave: Seasonal variations; Trace metals; Sediment transport; Fluid flow; Brackishwater pollution; Estuarine sedimentation; River discharge.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1274.pdf

La Baie de Seine: Utilisation, environnement. Synthese des discussions
Provedor de dados: 5
Autores: Mauvais, J.
This report synthesizes the communications about the processes set in motion or accelerated by man's actions in the Seine Bay. They are grouped in three categories: fishing and pollution and estuarine equipment; colored waters and pollution; and estuarine equipment.
Tipo: Text
Palavras-chave: Red tides; Port installations; Estuarine fisheries; Environmental impact; Brackishwater pollution; Coastal zone management; Estuaries.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1322.pdf

Comportement chimique et geochimique des elements a l'état de traces dans l''estuaire de la Seine: Une synthese des resultats
Provedor de dados: 5
Autores: Guegueniat, P.
Five topics are developed in this synthesis: (1) multi elements analysis in geochemistry; (2) iron geochemical behavior; (3) complexing properties of waters; (4) copper behavior in estuarine waters; (5) impact of sediment dynamics on dissolved metals concentration.
Tipo: Text
Palavras-chave: Geographical distribution; Radiochemistry; Brackishwater pollution; Sediment dynamics; Dissolved chemicals; Heavy metals; Geochemistry; Physicochemical properties; Trace elements.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1290.pdf

Evaluacion de factores hidroquimicos indicadores de contaminacion orgánica en la laguna costera del Doctor, Playa Baracoa, Cuba
Provedor de dados: 20
Autores: Perigó Hernández, A.M.; Perigó Arnaud, E.; Montalvo, J.F.; Chang Corona, E.; César Manfarrol, M.E.; García, R.
En la zona costera del municipio Bauta se encuentra la laguna costera el Doctor, cuya calidad se ha visto seriamente dañada por ser receptora de un considerable volumen de residuales crudos (alrededor de 8000 m3) originados por las actividades domésticas de de una Comunidad de alrededor de 5000 habitantes y otras instalaciones comerciales y vivienda que se desarrollan en la margen de la laguna, como consecuencia ocurrió masivas mortandades de peces derivado de las condiciones anóxicas de la laguna (Perigó, et al, 2003, Alcalde et al, 2003). El objetivo de este trabajo es actualizar el conocimiento sobre el estado de la calidad ambiental de la laguna El Doctor a través de variables de estado indicadoras de contaminación orgánica.
Tipo: Conference Material
Palavras-chave: Coastal lagoons; Brackishwater pollution; Organic wastes; Environmental impact; Domestic wastes; Organic wastes; Environmental impact; Domestic wastes; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_35237; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_35241; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 2006
URL: http://hdl.handle.net/1834/2255

Studies on the water quality of River Ramisi near a sugar factory
Provedor de dados: 20
Autores: Oteko, D.
The findings are presented of a study conducted to investigate the  quality of the water at the Ramisi Estuary, which is affected by  effluents from a sugar factory. The river was found to be polluted all year round by these wastes and the need for proper treatment of the waste before discharging is stressed.
Tipo: Journal Contribution
Palavras-chave: Industrial wastes; Brackishwater pollution; Freshwater pollution; Pollution monitoring; Wastes; Absorption; Wastes.
Ano: 1986
URL: http://hdl.handle.net/1834/1210

Calidad físico química y bacteriológica de las aguas alrededor de la ciudad de Guayaquil 1996 - 1998
Provedor de dados: 20
Autores: Valencia, M.; Palacios, C.; Rodríguez, A.
Siendo Guayaquil una de las ciudades más pobladas del Ecuador y de gran importancia en el desarrollo industrial del país, se determinó la necesidad de llevar a cabo un estudio de la calidad de aguas del río y esteros que bordean la ciudad, debido a que los asentamientos poblacionales e industriales han crecido descargando sus desechos a esos ecosistemas, sumándose a esto el déficit de los sistemas de alcantarillado. Se presenta los resultados de un estudio realizado en el Río Guayas desde el Muelle de la Unidad Nacional hasta la zona de las Esclusas considerando 9 estaciones ubicadas en 3 perfiles perpendiculares a las riberas del río a dos niveles de profundidad, superficie y 10 m., así como de la zona del Estero Salado comprendida entre el área de...
Tipo: Journal Contribution
Palavras-chave: Water quality; River water; Water analysis; Nutrients (mineral); Dissolved oxygen; Petroleum hydrocarbons; Rivers; Marshes; Freshwater pollution; Brackishwater pollution; Estuaries; Water quality; Dissolved oxygen; Rivers; Estuaries; Water analysis; Marshes; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_16064; Http://aims.fao.org/aos/agrovoc/c_4631.
Ano: 2000
URL: http://hdl.handle.net/1834/2309

Studies on the water quality of River Ramisi near a sugar factory
Provedor de dados: 20
Autores: Oteko, D.
The findings are presented of a study conducted to investigate the  quality of the water at the Ramisi Estuary, which is affected by  effluents from a sugar factory. The river was found to be polluted all year round by these wastes and the need for proper treatment of the waste before discharging is stressed.
Tipo: Journal Contribution
Palavras-chave: Industrial wastes; Brackishwater pollution; Freshwater pollution; Pollution monitoring; Wastes; Absorption; Wastes.
Ano: 1986
URL: http://hdl.handle.net/1834/1210