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Registros recuperados: 108
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Rapport national sur l'état de l'environnement marin et côtier OceanDocs
Le domaine maritime sénégalais s’étend de 18°00 N, -20°00 W, -16°30 E, 12°15 S ; la presqu’île du Cap-Vert située entre 14°30 N et 15°00 N le divise en deux zones aux caractéristiques topographiques distinctes. Au nord, le plateau continental est peu étendu vers le large et orienté Nord-Nord/Est. Au sud de la presqu’île, le plateau s’élargit et le talus continental est orienté nord-sud. L’embouchure du fleuve Sénégal au Sénégal au Nord de la presqu’île du Cap-Vert et celles de la Gambie et de la Casamance au Sud constituent également un trait marquant de cette région. Les travaux réalisés au Sénégal en océanographie ont montré : - l’existence de deux saisons marines aux caractéristiques très différentes qui se succèdent : une saison chaude de juillet à...
Tipo: Report Palavras-chave: Deltas; Ecosystems; Mangroves; Coastal erosion; Marine environment; Marine mammals; Shark fisheries; Turtle fisheries; Aquatic birds; Fishermen; Migrations; Flora; Fisheries; Marine pollution; Fishing nets; Climatic changes; Deltas; Ecosystems; Marine environment; Aquatic birds; Fishermen; Fisheries; Mangroves; Coastal erosion; Flora; Fishing nets; Http://aims.fao.org/aos/agrovoc/c_2170; Http://aims.fao.org/aos/agrovoc/c_2482; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_8898; Http://aims.fao.org/aos/agrovoc/c_2936; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_16190; Http://aims.fao.org/aos/agrovoc/c_9949; Http://aims.fao.org/aos/agrovoc/c_2983; Http://aims.fao.org/aos/agrovoc/c_2951.
Ano: 1922 URL: http://hdl.handle.net/1834/2884
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Determination of nitrate ion in marine biotopes with high nitrate content by ultraviolet spectrophotometry OMA
Mertens, J.; Massart, D.L..
A simple and rapid method for the determination of nitrate in seawater of high nitrate content (>1 ppm) is proposed. The absorption of the nitrate ion is measured at 210 and 220 mµ. The sample is treated with a measured quantity of hydrochloric acid to eliminate the carbonate and bicarbonate interferences and measured against a nitrate free blank prepared by reduction of the nitrate to ammonia with Raney nickel. The addition of HCl permits also storage of the sample without special precautions and the use of the blank eliminates the most serious of the interferences (bromide) expected in seawater. The interference of organic matter limits however the applicability of the method to concentrations higher than 1 ppm.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Marine environment; Nitrates; Spectroscopy.
Ano: 1971 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3424
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Marine environmental data information referral catalogue OceanDocs
Tipo: Book Palavras-chave: Marine Environment; Marine ecology; Marine environment; Information retrieval; Information handling; Information centres; Marine environment; Marine ecology; Information retrieval; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_4609; Http://aims.fao.org/aos/agrovoc/c_3863.
Ano: 1979 URL: http://hdl.handle.net/1834/2813
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Composition en cires, triglycérides, protéines et sucres du mésozooplancton ArchiMer
Alayse-danet, Anne-marie; Daniel, Jean-yves; Le Coz, Jean-rene.
Analyses effectuées sur le zooplancton total des pêches verticales au WP2 et sur des animaux triés à partir des pêches horizontales (Campagne RCA sur les côtes Atlantiques du Portugal). On ne signale pas de différence significative entre la composition biochimique des populations du large et de la côte
Tipo: Text Palavras-chave: Zooplancton; Milieu marin; Composition chimique; Glucide; Cire animale; Triglycéride; Protéine; Océan Atlantique Nord; Upwelling; Méiofaune; Portugal; France; Zone côtière; Zooplankton; Marine environment; Chemical composition; Carbohydrate; Animal wax; Triglyceride; Proteins; North Atlantic; Upwelling; Meiofauna; Portugal; France; Coastal zone.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/00189/29976/28429.pdf
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Etude ecologique des vibrions du bassin d'Arcachon ArchiMer
Marchand, Michel.
Water and sediment samples monthly collected from Arcachon Bay (Gironde, France) were examined during three years for the presence of marine vibrios. V. cholerae serotype 01 was never detected. On the other hand, the Eyre River and mouth contain non-agglutinating V. cholerae (127 strains) principally in water. The low temperatures slow their development down without stopping it completely. V. parahaemolyticus (257 strains) present in the same areas is particularly isolated from water when the aquatic medium temperature rises to 15 degree C. V. alginolyticus (638 strains) settles the whole Bay, except the river, in any season. The low temperatures promote growth of V. metschnikovii (203 strains) very tolerant towards salinity. V. anguillarum (46 strains)...
Tipo: Text Palavras-chave: Vibrio metschnikovii; Vibrio anguillarum; Vibrio alginolyticus; Vibrio cholerae; Vibrio; Marine environment; Microorganisms; Sediments; Salinity effects; Temperature effects; Ecology; Water.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-998.pdf
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Fluorescent antibody enumeration of Vibrio cholerae in the marine environment. ArchiMer
Brayton, P; Roszak, D; Palmer, L; Huq, S; Gimes, D.
From microcosm studies, V. cholerae and related potential human pathogens enter a viable but nonculturable state. Direct viable counts by epifluorescent microscopy consistently remain higher than corresponding plate counts. Thus, the assumption that pathogens "die-off" or "decay" in the marine environment must be re-evaluated, since stressed or nutrient-starved cells are unable to grow and be enumerated by standard plate count methods. Indirect immunofluorescent microscopy offers a more sensitive detection system for environment sampling for human pathogens. Field indicate that cultures positive for V. cholerae O1 are also positive by fluorescent antibody staining; however, the reverse was not necessarily true. By adapting epifluorescent techniques for...
Tipo: Text Palavras-chave: Vibrio cholerae; Bacteria; Experimental research; Marine environment; Pathogenic bacteria; Microbial contamination; Fluorescence microscopy; Bacterial counters; Pollution detection.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1000.pdf
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Heavy metals effect on bacterial communities from coastal sediments. ArchiMer
Modamio, X; Mallo, S.
The effects of heavy metals on bacterial communities of sea sediments are studied. Samples were taken from a very polluted zone near Barcelona. Bacterial populations were estimated by the plate count method, using culture medium amended with heavy metals (Hg, Cd, Cr and Cu). The authors have also made a numerical taxonomy study with a hundred resistant strains, using 129 unit characters.
Tipo: Text Palavras-chave: Microorganisms; Marine environment; Toxicity; Bacteria; Numerical taxonomy; Sediment pollution; Pollution effects; Heavy metals.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1013.pdf
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Contribution de l''etude des suspensions a la comprehension des mecanismes hydrosedimentaires estuariens et littoraux en Manche centrale et orientale ArchiMer
Dupont, J; Lafite, R; Lamboy, M.
Satellite imagery shows the turbid and thermal plume of the Seine River and littoral zone of Picardie and Haute-Normandie. The suspensions have been analysed in conformity with a strategy elaborated in 1985 by the authors. In this macrotidal coastal environment they have attempted to draw the dynamic specificities and the material characteristics.
Tipo: Text Palavras-chave: Estuarine front; Harbours; Coastal zone; Estuaries; Marine environment; Composition; Particle concentration; Granulometry; Hydrodynamics; River plumes; Suspended particulate matter.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1277.pdf
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Strategie d''etude des suspensions mise en oeuvre en Baie de Seine ArchiMer
Lafite, R; Lamboy, M.
The results of research lead by this laboratory have struck upon the qualitative and textural diversity of suspended particulate matter. This diversity has followed the various techniques for sampling and the adjustment of a methodology which correlate, quantitative data analysis.
Tipo: Text Palavras-chave: Estuarine front; River plumes; Estuaries; Marine environment; Zonal distribution; Mathematical analysis; Composition; Particle concentration; Turbidity; Granulometry; Methodology; Sampling; Particle distribution; Suspended particulate matter.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1276.pdf
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Ecotoxicological testing for the marine environment: report on an international Symposium held in Belgium in 1983 OMA
Persoone, G.; Jaspers, E.; Claus, C..
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecotoxicology; Marine environment; Toxicity tests.
Ano: 1986 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3224
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Présence d'un Protogonyaulax sp. sur le littoral atlantique français pendant l'hiver 1987 ArchiMer
Lassus, Patrick; Bardouil, Michele.
A dinoflagellate belonging to Protogonyaulax genera and forming more than 20 cells chains was observed from November 1987 to February 1988 in Vilaine Bay and in the west ofIle d'Yeu (France). This species was not detected in coastal phytoplankton during preceding surveys. Close to Protogonyaulax affinis it seems to be a winter developing species for this coastal area. Vertical distribution shows in december a migration of the patch towards deeper layers. Increasing occurrences of species belonging to Protogonyaulax (Alexandrium Balech) genera inshore or coastal waters need to pay more attention to the taxonomy of such organisms. Some species are effectively well known as poisons producers.
Tipo: Text Palavras-chave: Pyrrophycophyta; Milieu marin; Morbihan; Vendée; Océan Atlantique Nord; Plancton; Morphologie; Algae; Thallophyta; Bretagne; France; Europe; Pays de Loire; Océan Atlantique; Pyrrophycophyta; Marine environment; Morbihan; Vendée; North Atlantic; Plankton; Morphology; Algae; Thallophyta; Bretagne; France; Europe; Pays de Loire; Atlantic Ocean.
Ano: 1988 URL: http://archimer.ifremer.fr/doc/00133/24474/22485.pdf
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Surveillance écologique et halieutique. Site de Gravelines. Novembre 1986 - Octobre 1987 ArchiMer
Maillard-quistoudt, C.; Degros, N.; Janquin, Marie-andree; Delesmont, E; Delesmont, Régis; Grossel, Hubert; Le Fevre-lehoerff, Geneviève; Woehrling, Daniel; Martin, Jocelyne; Tetard, Alain; Dewarumez, Jean-marie; Menu, D..
La nouvelle stratégie mise en place au cours de la 9ème période de surveillance de Gravelines consiste à abandonner l'étude temporelle caractérisée par un grand nombre de campagnes pour privilégier les variations spatiales, pour trois situations annuelles printanière, estivale et automnale, afin de comparer l'ensemble des paramètres aux quatre stations entrée de centrale, rejet, point impacté à T = + 3°C et point de référence T = O°C (hors impact). Les domaines d'études sont: la climatologie, le fonctionnement de la centrale, l'hydrologie, la microbiologie, le plancton, l'halieutique, le benthos. Dans tous les domaines l'effort est mis sur les estimations de déficit de biomasses au rejet d'une part et les compétitions intréspécifiques quand le milieu...
Tipo: Text Palavras-chave: Gravelines; Centrale nucléaire; Ecologie; Milieu marin; Gravelines; Nuclear power plant; Ecology; Marine environment.
Ano: 1988 URL: http://archimer.ifremer.fr/doc/00005/11585/8211.pdf
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Studies of the life-history and energetics of marine and brackish-water nematodes: 1. Demography of <i>Monhystera disjuncta</i> at different temperature and feeding conditions OMA
Vranken, G.; Herman, P.M.J.; Heip, C.H.R..
Aspects of the demography of <i>Monhystera disjuncta</i> were investigated at different feeding conditions (monoxenic cultures with different bacterial strains, and different densities in the feeding suspension with one strain). Embryonic development time, minimum generation time, egg deposition rate and adult longevity depend on temperature, quality and quantity of food offered. Body mass at maturity is an allometric function of food density. It is shown that a previously inferred selectivity in food uptake is an artifact of culture conditions. pH buffering and addition of sterols permit culture of the species on a wide variety of bacterial strains. <i>M. disjuncta</i> is less well adapted to take advantage of high food density...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioenergetics; Brackishwater environment; Cultured organisms; Feeding; Life history; Marine environment; Meiobenthos; Temperature effects; Water temperature; Monhystera disjuncta.
Ano: 1988 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3159
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Determination of methanesulfonic acid and non-sea-salt sulfate in single marine aerosol particles OMA
Kolaitis, L.N.; Bruynseels, F.; Van Grieken, R.; Andreae, M.O..
In open ocean waters the predominant volatile sulfur compound is dimethyl sulfide (DMS), representing almost 90% of the marine sulfur emissions. Methanesulfonic acid (MSA), one of the oxidation products of DMS, is consequently an important constituent of marine aerosols. Laser microprobe mass analysis (LAMMA) has been used for single-particle analysis of particles collected in the marine boundary layer. MSA, like the non-sea-salt sulfate, is mainly associated with the smallest aerosol particles, whose LAMMA spectra match the reference fingerprint spectra of MSA salts, sodium methanesulfonate and ammonium methanesulfonate. The presence of nitrate and heavy metal ions in the LAMMA spectra can reveal, to a certain extent, the degree of air pollution at the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aerosols; Air pollution; Boundary layers; Heavy metals; Marine environment; Nitrates; Particle size; Sulphates.
Ano: 1989 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3177
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Influence de l'azote et du phosphore sur la croissance et la toxicité de Prorocentrum lima (Ehrenberg) Dodge ArchiMer
Morlaix, Martine; Lassus, Patrick.
Very few attempts have been made in order to investigate the role of nutrients on cellular growth and toxin production in dinoflagellates associated with DSP (Diarrhetic Shellfish Poison). Some preliminary results are presented here, aiming at a better knowledge of inorganic nitrogen and organic phosphorus effects upon division rate and toxin content of Prorocentrum lima (PL2V spanish strain). Nitrogen have a positive effect on growth rate, up to a threshold value of 880muM.l-1. Above this threshold the rate decreases. There is no effect on toxin content since okadaic acid and DTX1 cell contents remain low (4.8 +/- 0.5 pg.cell.-1) and steady. Phosphorus effect upon division rate follows a non-linear relationship, whereas cellular toxic content is inversely...
Tipo: Text Palavras-chave: Croissance; Toxicité; Concentration chimique; Division cellulaire; Production; Espagne; Phosphore; Azote; Europe; Nutriment; Milieu marin; Zone côtière; Ecotoxicologie; Pyrrophycophyta; Algae; Thallophyta; Okadaïque acide; Prorocentrum lima; Growth; Toxicity; Chemical concentration; Cell division; Production; Spain; Phosphorus; Nitrogen; Europe; Nutrient; Marine environment; Coastal zone; Ecotoxicology; Pyrrophycophyta; Algae; Thallophyta.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/00133/24469/22483.pdf
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Guide to satellite remote sensing of the marine environment OceanDocs
IOC.
Tipo: Other Palavras-chave: Oceanography; Remote sensing equipment; Remote sensing; Satellite sensing; Satellite photography; Marine environment; Marine environment; Remote sensing; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_6498.
Ano: 1992 URL: http://hdl.handle.net/1834/2846
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Marine environmental data information referral catalogue (MEDI catalogue) OceanDocs
Tipo: Book Palavras-chave: Marine Environmemt; Marine environment; Sensors; Environmental monitoring; Environmental assessment; Environment management; Environments; Environmental surveys; Monitoring; Monitoring systems; Data collections; Data acquisition; Data transmission; Data processing; Catalogues; Marine environment; Sensors; Environmental monitoring; Monitoring; Environmental assessment; Data acquisition; Data processing; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_28279; Http://aims.fao.org/aos/agrovoc/c_37876; Http://aims.fao.org/aos/agrovoc/c_4911; Http://aims.fao.org/aos/agrovoc/c_37751; Http://aims.fao.org/aos/agrovoc/c_37344; Http://aims.fao.org/aos/agrovoc/c_10289.
Ano: 1993 URL: http://hdl.handle.net/1834/2804
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Impact de l'aquaculture marine sur l'environnement : aspects juridiques et économiques ArchiMer
Paquotte, Philippe.
Aquaculture is an economic activity which is characterised by a great dependence on environmental conditions. Therefore aquaculture development is subdued to institutional context which defines the rules for use and conservation of the environment. This paper analyses the impact of marine environment regulations on economic operating of aquaculture enterprises and on industrial dynamics. Because aquaculture enterprises use a collective good, an economic approach of aquaculture has to take into account not only the relations between enterprises and environment, but also the relations between the enterprises themselves, through production externalities. In this study, several economic tools are considered in order to incite enterprises to integrate pad of...
Tipo: Text Palavras-chave: Sustainability; Development policies; Fiscal policies; Regulations; Environmental protection; Water; Environmental impact; Marine environment; Aquaculture; SEM; Durabilité; Politique de développement; Politique fiscale; Réglementation; Protection de l'environnement; Eau; Impact sur l'environnement; Milieu marin; Aquaculture.
Ano: 1994 URL: http://archimer.ifremer.fr/doc/1994/publication-4018.pdf
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Le chrome en milieu marin ArchiMer
Chiffoleau, Jean-francois.
This document constitutes a synthesis of current knowledge on the chromium biogeochemical cycle. The natural and anthropogenic sources are evaluated, the fluxes between the various geochemical compartments are assessed, with special attention to the riverine and atmospheric inputs to the marine environment. Chromium levels in these compartments are described and show in several areas a very high contamination of marine organisms. Due to the important toxicity of this element, further investigations are absolutely required to better understand its behaviour in the marine environment.
Tipo: Text Palavras-chave: Economic analysis; Air water exchanges; Toxicity; Biogeochemical cycle; Marine environment; Pollution; Chromium.
Ano: 1994 URL: http://archimer.ifremer.fr/doc/1994/rapport-1430.pdf
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Dinophysis acuminate (dinophyceae), une espèce à géométrie variable sur les côtes françaises ArchiMer
Lassus, Patrick; Marcaillou-le Baut, Claire.
Tipo: Text Palavras-chave: Morphologie; Variabilité; Ultrastructure; Croissance; France; Dinophysis acuminata; Europe; Milieu marin; Zone côtière; Phytoplancton; Pyrrophycophyta; Algae; Thallophyta; Morphology; Variability; Ultrastructure; Growth; France; Europe; Marine environment; Coastal zone; Phytoplankton; Pyrrophycophyta; Algae; Thallophyta.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/00133/24468/22484.pdf
Registros recuperados: 108
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