Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 48
Primeira ... 123 ... Última
Imagem não selecionada

Imprime registro no formato completo
A case study of ship track formation in a polluted marine boundary layer OMA
Noone, K.J.; Johnson, D.W.; Taylor, J.P.; Ferek, R.J.; Garrett, T.; Hobbs, P.V.; Durkee, P.A.; Nielsen, K.; Öström, E.; O'Dowd, C.; Smith, M.H.; Russell, L.M.; Flagan, R.C.; Seinfeld, J.H.; De Bock, L.; Van Grieken, R.; Hudson, J.G.; Brooks, I.; Gasparovic, R.F.; Pockalny, R.A..
A case study of the effects of ship emissions on the microphysical, radiative, and chemical properties of polluted marine boundary layer clouds is presented. Two ship tracks are discussed in detail. <i>In situ</i> measurements of cloud drop size distributions, liquid water content, and cloud radiative properties, as well as aerosol size distributions (outside-cloud, interstitial, and cloud droplet residual particles) and aerosol chemistry, are presented. These are related to remotely sensed measurements of cloud radiative properties. The authors examine the processes behind ship track formation in a polluted marine boundary layer as an example of the effects of anthropogenic particulate pollution on the albedo of marine stratiform clouds.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aerosols; Air pollution; Albedo; Atmosphere; Atmosphere; Atmospheric boundary layer; Boundary layers; Cloud cover; Clouds; Man-induced effects; Marine environment; Marine pollution; Particulates; Remote sensing; Ships.
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=8839
Imagem não selecionada

Imprime registro no formato completo
A review of the pollution of coastal waters in Nigeria OceanDocs
Ajao, E.A.; Oyewo, E.O.; Unyimadu, J.P..
The coastal waters in Nigeria are described in relation to the general morphology, vegetation and beach Type along the 850km coastal. The environmental sensitivity of the fragile Niger delta ecosystem is expressed by the numerous estuaries, rivers, creeks, lacustrine and inshore waters which support freshwater and brackish water mangrove swamps. Ocean resources exploited from the Niger delta and adjacent Continental platform include oil, gas and fishes. The general hydrograph and superfial circulation are described against the background of human activities in coastal settlements and developmental pressures for resource utilisation giving rise to water pollution. Micropollutants identified and measured so far include organic waste, trace heavy metals...
Tipo: Report Palavras-chave: Marine pollution.
Ano: 1996 URL: http://hdl.handle.net/1834/2214
Imagem não selecionada

Imprime registro no formato completo
Accumulation and depuration of hydrocarbons in the mangrove oyster Crassostrea rhizophorae ArchiMer
Delcastillo, C; Corredor, J; Morell, J.
Adult specimens of Crassostrea rhizophorae were exposed to diesel oil dispersed in seawater. The experiment consisted of a 10 days contamination period and 15 days depuration period. Oyster samples were extracted, and analysed by gas chromatography and UV fluorescence spectroscopy. The concentrations of n-alkanes, branched alkanes, unresolved complex mixture (UCM) and aromatic hydrocarbons were determined. The oysters accumulated the hydrocarbons rapidly, reaching a maximum concentration of 387.5 ug/g (wet weight). After exposure to uncontaminated seawater, the oysters were able to reduce their hydrocarbon load to 5.6 ug/g. The data indicates that C. rhizophorae is capable of preferential accumulation and depuration of hydrocarbons. Apparently, the oysters...
Tipo: Text Palavras-chave: Crassostrea rhizophorae; Bivalvia; Fluorescence spectroscopy; Gas chromatography; Oyster culture; Hydrocarbons; Marine pollution; Accumulation; Self purification.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1602.pdf
Imagem não selecionada

Imprime registro no formato completo
Amoco-Cadiz : Informations sur la contamination des espèces exploitées ArchiMer
Michel, Pierre; Abarnou, Alain.
This report is a statement of the analytical results obtained in the control of the exploited species three months after the AMOCO CADIZ ran aground on the coast of Brittany. Different samples have been studied, among these : algae, crustaceans (Maïa squinado and Cancer pagurus). twenty species of fish, and molluscs (Ostrea edulis. Crassostrea gigas. Mytilus edulis) Algae have been heavily contaminated but are partically available for algi­nate industry. Molluscs are not presently edible within the whole polluted area. Fishes and crustaceans are less polluted.
Tipo: Text Palavras-chave: Pollution marine; Analyse; Hydrocarbures; Marine pollution; Analysis; Hydrocarbons.
Ano: 1978 URL: http://archimer.ifremer.fr/doc/00306/41724/40935.pdf
Imagem não selecionada

Imprime registro no formato completo
An evaluation of surface micro- and mesoplastic pollution in pelagic ecosystems of the Western Mediterranean Sea ArchiMer
Faur, Florian; Saini, Camille; Potter, Gael; Galgani, Francois; De Alencastro, Luiz Felippe; Hagmann, Pascal.
This study examines the distribution, abundance and characteristics of surface micro- and mesoplastic debris in the Western Mediterranean Sea. 41 samples were collected in 2011 (summer) and 2012 (summer). Results, firstly, revealed that micro- (<5mm) and mesoplastic debris were widely and uniformly distributed in this area with average concentrations of 130,000 parts/km(2) and 5700 parts/km(2), respectively. Importantly, a strong correlation between micro- and mesoplastic concentrations was identified. Secondly, a classification based on the shape and appearance of microplastics indicated the predominant presence of fragments (73 %) followed by thin films (14 %). Thirdly, the average mass ratio of microplastic to dry organic matter has been measured at...
Tipo: Text Palavras-chave: Plastic debris; Marine pollution; Mediterranean Sea; Surface net tow; Microplastic pollution; Neustonic plastic.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00275/38629/37311.pdf
Imagem não selecionada

Imprime registro no formato completo
Concentrations and origin of polycyclic aromatic hydrocarbons in sediments of the Middle Adriatic Sea ArchiMer
Mandic, Jelena; Pavela Vrancic, Maja.
A total of 208 polycyclic aromatic compounds and their substituted homologues were investigated on eight stations along Croatia-Italy transect in the Middle Adriatic. PAC concentrations were higher in the coastal area than in the open sea area. The highest PAC concentrations were measured in the vicinity of the industrial harbor of Split while the lowest concentrations were observed on stations located in the open sea area. Polycyclic aromatic hydrocarbons were dominant group of compounds on each investigated station with contributions in total PAC concentration of more than 85%. S-PAH concentrations were higher than O-PAH concentration in each sample and tend to decrease as the distance from the coast increased. Contributions of O-PAH in total PAC...
Tipo: Text Palavras-chave: Polycyclic aromatic compounds; PAH; Sediments; Diagnostic ratios; Marine pollution; Adriatic Sea.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00395/50607/51319.pdf
Imagem não selecionada

Imprime registro no formato completo
Contaminación marina por petróleo en aguas costeras ecuatorianas OceanDocs
Valencia, M.; Trejos de Suescum, R..
El presente trabajo realiza un enfoque general acerca de la problemática de la contaminación marina por petróleo, el comportamiento de este contaminante en el mar, así como las fuentes más probables de contaminación por petróleo. Además se presenta un enfoque específico de la concentración y distribución de hidrocarburos del petróleo, disueltos y dispersos en aguas del mar, frente a las principales poblaciones costeras de las provincias del Guayas y el Oro, tomando en consideración dos muestreos, Diciembre de 1985 y Abril de 1986. Se concluye que, aún cuando no se han detectado concentraciones masivas de hidrocarburos disueltos y dispersos en las aguas estudiadas, sin embargo, la presencia del contaminante, en todas ellas, en mayor o menor grado, indica...
Tipo: Journal Contribution Palavras-chave: Marine pollution; Oil pollution.
Ano: 1986 URL: http://hdl.handle.net/1834/2117
Imagem não selecionada

Imprime registro no formato completo
Contaminación por residuo de hidrocarburo del petróleo en el Puerto Marítimo de Guayaquil y su área de influencia debido a actividades navieras, período 1984 al 2004 OceanDocs
Rodríguez Moreira, A..
Siendo Guayaquil el principal Puerto Marítimo y fluvial del Pacífico Ecuatoriano, y de gran importancia del comercio exterior que maneja el sistema portuario nacional, así como las diversas actividades como la exportación: carga refrigerada e importación de materias primas para la industria, se determinó un estudio de evaluación cualitativa y cuantitativa de los derrames eventuales de residuos de hidrocarburos del petróleo ocasionado por las diferentes embarcaciones apoderadas en los muelles de Autoridad Portuaria de Guayaquil.
Tipo: Journal Contribution Palavras-chave: Petroleum hydrocarbons; Merchant ships; Boats; Harbours; Marine pollution; Oil pollution; Harbours; Http://aims.fao.org/aos/agrovoc/c_3492.
Ano: 2006 URL: http://hdl.handle.net/1834/2304
Imagem não selecionada

Imprime registro no formato completo
Contenido de Cu, Co, Cr y Pb en sedimentos de tres estuarios de la costa sur de Cuba OceanDocs
Arencibia Carballo, G.; Perigó, E.; Sosín, A..
The many fishing activities of the south area of the Counties Sancti Spíritus and Ciego de Ávila they are enough reason to make studies of levels of toxic elements in the silts. The obtained results of the determination of Cu, Co, Cr and Pb in silts of the estuaries and rivers Agabama, Zaza and Jatibonico of the South are discussed and compared. They are also related these elements with the percentage of volatile matter in the silts. These tributary of the south coast, nevertheless to be in the same line of coast of about 200 Km presents remarkable differences as for their relationships with urban populations, industries and agricultural works. The technique employee for determination of the concentrations of the metallic elements was the espectrofotometry...
Tipo: Journal Contribution Palavras-chave: Marine pollution; Heavy metals; Spectrochemical analysis; Sediments; Heavy metals; Http://aims.fao.org/aos/agrovoc/c_2223.
Ano: 1988 URL: http://hdl.handle.net/1834/1882
Imagem não selecionada

Imprime registro no formato completo
Copepod composition, abundance and diversity in Makupa Creek, Mombasa, Kenya OceanDocs
Osore, M.; Fiers, F.; Daro, M.H..
The taxonomic composition, abundance and spatio-temporal distribution of copepods were analysed from monthly zooplankton samples collected in Makupa creek and Mombasa Harbour (Makupa creek was until recently subjected to considerable dumping of domestic and industrial waste). At least 51 copepod species belonging to 38 genera in the families Calanoida (25), Harpacticoida (5), Poecilostomatoida (7) and Cyclopoida (1) were identified. The most common genera were Acartia, Acrocalanus, Corycaeus, Oncaea and Oithona. Copepods bloomed in the wet months of November and April (75 to 158/m3). Abundance was consistently high near the creek mouth and low within the creek enclosure. Copepod diversity (H’) was slightly higher (2.00 to 2.57) during September, November,...
Tipo: Journal Contribution Palavras-chave: Mombasa; Marine pollution; Zooplankton; Copepod culture; Monsoons.
Ano: 2003 URL: http://hdl.handle.net/1834/1081
Imagem não selecionada

Imprime registro no formato completo
Depuration of copper nitrate and chloride in the Indian brown mussel Perna indica ArchiMer
Kondajii, N; Menon, N.
It is understood that the rate of bioaccumulation and subsequent depuration of heavy metals in marine animals is influenced by the chemical state, as well as the kinetics of transformation between different species of chemical salts dissolved in water. The Indian Brown mussel, Perna indica, was exposed to copper nitrate and chloride, individually, to analyse the rate of accumulation, depuration, oxygen uptake and filtration rates. When supplied in very low quantities, environmentally realistic concentrations, the rate of accumulation of copper nitrate and chlorides showed variations. When the animals were transferred to sea water, these two salts did not show any clear cut differences in the depuration rate. Irrespective of the previous accumulation...
Tipo: Text Palavras-chave: Perna indica; Bivalvia; Chlorides; Copper; Mussel culture; Heavy metals; Marine pollution; Accumulation; Self purification.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1603.pdf
Imagem não selecionada

Imprime registro no formato completo
Editorial: New Challenges in Marine Pollution Monitoring ArchiMer
Bellas, Juan; Hylland, Ketil; Burgeot, Thierry.
Tipo: Text Palavras-chave: Marine pollution; Ecotoxicology; Biomonitoring; Water quality; Bioaccumulation.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00606/71775/70269.pdf
Imagem não selecionada

Imprime registro no formato completo
Efectos de la contaminación crónica por hidrocarburos en el Puerto de Mar del Plata (Argentina), sobre una colonia de lobo marino de un pelo, Otaria flavescens OceanDocs
Junín, M.; Castello, H.; Hollmann, P..
La ciudad de Mar de Plata en la provincia de Buenos Aires, es el Puerto pesquero más importante de la Argentina, desde el cual operan mas de 400 naves. Para entrar al puerto todas las naves pasan frente a una colonia de lobo marino de un pelo oataria flavescens establecida en uno de los márgenes de la escollera Sur dentro del puerto. Esta colonia está protegida del contacto con el público por un vallado de alambre tejido. Esta compuesta exclusivamente por machos, que descansan durante el invierno. Durante el período reproductor los animales se desplazan hacia las colonias reproductivas, retornando a la lobería a fin del verano. Un alto porcentaje de los animales mostró alteraciones de piel y mucosas al examen visual, con pérdida de pelo abarcando una...
Tipo: Journal Contribution Palavras-chave: Marine pollution; Petroleum hydrocarbons; Marine mammals; Oil pollution; Fishing harbours.
Ano: 1998 URL: http://hdl.handle.net/1834/2261
Imagem não selecionada

Imprime registro no formato completo
Etude des liens trophiques au sein d'une communaute bacterienne selectionnee a partir d'un sediment marin sur le cyclohexene-4 dicarboximide-1,2 (THPI) ArchiMer
Terrom, G; Gil, G; Lepetit, J.
A bacterial community has been selected from a marine sediment on 4-cyclohexene-1,2 dicarboximide or THPI (fungicide). This community consists of nine strains. The "principal" strain, Photobacterium mandapamensis , degrades THPI by different metabolic pathways many of which require co-oxidative sequences. The other eight "auxiliary" strains occur at different states along the trophic chain formed by the "principal" strain, so increasing velocity and intensity of the THPI biodegradation.
Tipo: Text Palavras-chave: Bacteria; Marine pollution; Microorganisms; Metabolism; Fungicides; Biodegradation; Sediment pollution; Trophic relationships.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1021.pdf
Imagem não selecionada

Imprime registro no formato completo
Etude environnementale et sociale du PRAO (Cap Vert, Sierra Léone, Libéria, Sénégal) OceanDocs
Faye, M. M..
La Commission Sous Régionale des Pêches (CSRP), qui est un organisme intergouvernemental de coopération halieutique dont l’objectif global est l’harmonisation à long terme, des politiques des pays membres en matière de préservation, de conservation et d'exploitation durable de leurs ressources halieutiques et le renforcement de leur coopération au profit du bien-être de leurs populations respectives, a obtenu par l’intermédiaire de la Banque mondiale, un Don du Fonds pour l’Environnement Mondial (FEM) et du Gouvernement du Japon, pour la préparation d’un Projet Régional des Pêches en Afrique de l’Ouest (PRAO) pour trouver une solution à la problématique susvisée. Ce projet implique 9 pays côtiers: la Mauritanie, le Cap Vert, le Sénégal, la Gambie, la...
Tipo: Report Palavras-chave: Environment management; Marine resources; Fisheries; Fishery management; Coastal fisheries; Coastal zone; Fishery regulations; Fishery economics; Marine pollution; Quality control; Illegal fishing; Fishery organizations; Quality assurance; Marine resources; Fisheries; Fishery management; Coastal fisheries; Quality assurance; Http://aims.fao.org/aos/agrovoc/c_28012; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_35287.
Ano: 2009 URL: http://hdl.handle.net/1834/3676
Imagem não selecionada

Imprime registro no formato completo
Etude experimentale de la disparition de coliformes fecaux d'un effluent urb ain en milieu marin ArchiMer
Bonnefont, J; Lelong, P; Martin, Y.
The authors studied survival of faecal coliform (decrease rate + T90) in experimental devices (closed or continuous flow systems) using various dilutions of urban sewage in sea-water. Survival appears to be high (T90 between 12 to 81 h). Dilution level of sewage and organic matter contents seems to be important to explain the decrease of faecal coliforms observed in these experiments.
Tipo: Text Palavras-chave: Bacteria; Microbial contamination; Pathogenic bacteria; Survival; Waste water; Marine pollution.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1009.pdf
Imagem não selecionada

Imprime registro no formato completo
Evaluación de la calidad ambiental de las aguas del litoral de la Ciudad de la Habana en el período lluvioso del año 2009 OceanDocs
García, L.; Martínez, A.J.; Pérez, M.; López, L.; Ruiz, M.; Solar, F.; Beltrán, J..
Las actividades de origen antropogénico en las zonas costeras han tenido efectos dramáticos y negativos sobre la composición química del agua de mar en muchas áreas. Con el objetivo de evaluar el grado de contaminación de las aguas del litoral de Ciudad de La Habana se realizaron análisis físicos, químicos y microbiológicos de calidad de agua. Los resultados obtenidos demuestran que los ríos están ejerciendo la mayor influencia sobre la zona costera del litoral habanero en cuanto a aportes de contaminantes en términos de nitrógeno amoniacal, fósforo y altas concentraciones de materia órganica no biodegradable. En la mayoría de las estaciones se observó una tendencia a la disminución de los coliformes fecales y una tendencia al incremento de los valores...
Tipo: Preprint Palavras-chave: Coastal waters; Marine pollution; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2010 URL: http://hdl.handle.net/1834/3627
Imagem não selecionada

Imprime registro no formato completo
Evaluación de las asociaciones de peces arrecifales en el oeste del litoral de La Habana, zona noroccidental de Cuba OceanDocs
García-Rodríguez, Alain; Lara-Lorenzo, Ariagna; González-Rodríguez, Naima.
Se realizó una evaluación rápida de las asociaciones de peces en el sector oeste del litoral norte de La Habana, el cual está sometido a un alto nivel de estrés ambiental. Se hicieron censos visuales mediante transeptos lineales en siete estaciones de dicha zona, en cada una de ellas se realizaron 6 réplicas de 50 m de largo por 2 m de ancho, siguiendo la metodología AGRRA. Los valores más bajos de densidad y biomasa se encontraron en las estaciones situadas al este del área de estudio (La Puntilla, calle 70 y calle 180), las cuales están más afectadas por la contaminación. La ictiofauna en todo el sector se caracterizó por una baja densidad, biomasa y talla de peces depredadores (pargos, meros, jureles, etc.) y herbívoros (fundamentalmente loros), al...
Tipo: Journal Contribution Palavras-chave: Reef fish; Abundance; Marine pollution.
Ano: 2012 URL: http://hdl.handle.net/1834/4571
Imagem não selecionada

Imprime registro no formato completo
Evaluación de las zonas con impacto antrópico del Golfo de Batabanó, Cuba. Empleo de indices de calidad OceanDocs
Martínez Canals, M.; Montalvo, J.F.; Miravet, M.E.; Lugioyo, M.; Loza, S.; Pérez, R..
The evaluation of the possible environmental changes due to the anthropic impacts that have happened in the last years in this scenario and the redefinition of areas that suffer affectations were carried up. Any environmental alteration of this ecosystem, either of natural or human origin, can have an important economic and social repercussion. According to the proposed chemical and biological indexes, the waters of the Gulf of Batabanó presented mesotrophic conditions with tendency to the eutrofization in four fundamental areas. In the silts of the Gulf the values of organic carbon and sulphidric acid were characteristic of sediments with high concentrations of organic matter. In the coastal sector N, was determinate high concentrations of sulphidric acid...
Tipo: Conference Material Palavras-chave: Heavy metals; Environmental impact; Coastal waters; Water quality; Man-induced effects; Marine pollution; Heavy metals; Environmental impact; Water quality; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2006 URL: http://hdl.handle.net/1834/2254
Imagem não selecionada

Imprime registro no formato completo
Evaluation de la contamination chimique par les métaux traces (Cd, Pb, Hg et Zn) du zooplancton et de la sardinelle <Sardinella aurita>dans le golfe de tunis OceanDocs
Ennouri, R.; Chouba, L.; Kraeim, M.M..
La présente étude a pour but de déterminer l’organotropisme de quatre métaux traces (Cd, Pb, Hg et Zn) ainsi que leurs concentrations dans le zooplancton et dans trois organes (muscle, foie et branchies) de la sardinelle (Sardinella aurita) provenant du golfe de Tunis. Les résultats ont montré que les concentrations moyennes des quatre métaux dosés (Cd, Pb, Hg et Zn) sont plus élevées dans la sardinelle que dans le zooplancton. Ceci est dû à la bioamplification de ces éléments dans la sardinelle qui occupe un niveau trophique élevé de la chaîne alimentaire marine. Pour le Pb, le Hg et le Zn, les teneurs le plus élevées ont été enregistrées dans les branchies de la sardinelle, alors que le Cd est concentré davantage au niveau du foie. Les concentrations...
Tipo: Journal Contribution Palavras-chave: Bioaccumulation; Marine pollution; Pollution indicators; Trace elements; Zooplankton; Sardinella aurita; Bioaccumulation; Zooplankton; Sardinella aurita; Trace elements; Http://aims.fao.org/aos/agrovoc/c_32389; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_39038; Http://aims.fao.org/aos/agrovoc/c_7834.
Ano: 2008 URL: http://hdl.handle.net/1834/3707
Registros recuperados: 48
Primeira ... 123 ... 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