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| Registros recuperados: 49 | |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| Registros recuperados: 49 | |
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