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Registros recuperados: 36
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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
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Aliphatic hydrocarbons and triterpenes of the Congo deep sea fan ArchiMer
Mejanelle, Laurence; Riviere, Beatrice; Pinturier, Laurence; Khripounoff, Alexis; Baudin, Francois; Dachs, Jordi.
Hydrocarbons were analyzed in sediments from the Congo River deep-sea fan, from the Congo River, and in sinking particles collected by sediment traps 40 m above the sediment. Studied sites encompassed three lobes of decreasing age of formation along the canyon: sites A, F and C and a another lobe system, disconnected from the active channel since 4 ka, Site E. Terrestrial long-chain odd n-alkanes were dominant in all sediments of the lobe system. Unsaturated terpenoids sourced by higher plants, such as gammacerene, lupene, ursene and oleanene, were also detected. At site C, characterized by high accumulation rates (10–20 cm yr−1), the organic matter spends less time in the oxic layer than at other sites and high phytadiene concentrations (10 to 17 μg...
Tipo: Text Palavras-chave: Congo fan; Hydrocarbons; NAH; Hopanes; Hopenes; Sediments; Turbidite system.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00388/49902/50472.pdf
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Alkanes as markers in nutritional studies with wild ruminant and non-ruminant animals Scientia Agricola
Oliveira,Dimas Estrasulas de; Silva,Sila Carneiro da.
Knowledge of information relative to the digestibility, intake and botanical and morphological composition of the diet is important in nutritional studies, since it provides the basis for understanding aspects related to the ingestive behavior and selectivity of animals. N-alkanes have been used successfully as markers in studies with many species of animals, particularly domesticated ruminants, most of the times as replacements for conventional markers as chromium oxide for example. However, for wild ruminants and non-ruminant animals information on this technique is still scarce and, as a consequence, its potential for use unknown. This review reports the use of this technique in studies of feed digestibility, intake and diet composition with wild...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestibility; Diet composition; Feed intake; Forages; Hydrocarbons.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000600015
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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
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Antarctic Psychrophile Bacteria Screening for Oil Degradation and Their Degrading Characteristics. OceanDocs
Zheng, Zhou; Jin, Qing; Miao, Jinlai; Liu, Fangming.
Two hydrocarbon degrading bacteria NJ276 and NJ341 were screened from 385 Antarctic marine bacteria and their degrading characteristics were studied. Diesel oil as sole carbon source was used in this study. The results showed that the oil degradation rates of Antarctic psychrophile bacteria NJ276 and NJ341 were 23.47 % and 32.15 %, respectively, after 20 days culturation at 5 °C, and the rates were 43.95 % and 62.47 % respectively after 20 days culturation at 15 °C. The oil degradation abilities were enhanced remarkably with the increasing culture temperature. GC - MSs indicated the residual oil contained C15 - C21 7 alkyls after degradation by NJ276, and C16, C17 and C18 3 alkyls after degradation by NJ341. The 16S rDNA gene sequences homology and...
Tipo: Journal Contribution Palavras-chave: Hydrocarbons; Degradation; Bacteria.
Ano: 2008 URL: http://hdl.handle.net/1834/5879
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Biodegradation du petrole en mer. Influence de l'apport d'azote et de phosphore sous forme minerale ArchiMer
Lepetit, J; Guiot, J; Martin, Y; Tagger, S.
To exploit the presence in the sea of microorganisms capable of degrading petroleum products a mineral fertilizer, containing immediatly assimilable nitrogen and phosphorus compounds, was used to increase the microbial population and therefore, the degradation potential of treated polluted waters. The fertilizer supply caused an increase in heterotrophic and hydrocarbon-splitting bacteria and an increase in the phytoplanktonic biomass. The latter is characterized by an increase in a few selected species; it constitutes an important supply of organic substances, and it is responsible for increasing the dissolved oxygen which is essential for petroleum oxidation. Supplying the fertilizer results in an increase in the treated water degradation potential and a...
Tipo: Text Palavras-chave: Bacteria; Microorganisms; Heterotrophic organisms; Phosphorus compounds; Nitrogen compounds; Fertilizers; Hydrocarbons; Biodegradation; Sea water.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1020.pdf
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Caractérisation préliminaire à partir de la lagune de Bizerte (Tunisie) des bactéries tolérantes aux hydrocarbures aromatiques polycliques (HAPS) OceanDocs
Duran, R.; El Bour, M.; Ben Said, O.; Goni, M. S.; Dalleli, M.; Aissa, P..
م إنجاز هذه الدراسة لهدف عَزَلَ بَكْتِيريَا قادرة على استعمالتم إنجاز هذه الدراسة لهدف عَزَلَ بَكْتِيريَا قادرة على استعمال الهيدروكربنات و مقاومة للمعادن والمضادات الحيوية و في هذا الإطار تم أخذ عينات من الماء و التربة على مستوى 16محطة موزعة ببحيرة بنزرت. كما تم عزل البكتيريا بطريقة الإثراء باستعمال وسط مائي معدني زائد هيدروكربنات (fluoranthène) وقد توصلنا في عملية أولية من عزل 130 من الأجذال المختلفة من البكتيريا والتي تم تعريفها عبر الخاصيات الشكلية و البيوكيميائية. وأثبتت النتائج الأولية أن البكتيريا القادرة على استعمال الهيدروكربنات تنتمي لمجموعات مختلفةGram – و Gram+ على التَّوَالِي بنسبتي 65% و 35 %. وتضم مجموعة البكتيريا من نوع العصيات Gram – أكبر عدد من الأجذال المعزولة (74 %). ختاما نشير أن دراسة قدرة الأجذال على مقاومة المعادن...
Tipo: Journal Contribution Palavras-chave: Bacteria; Antibiotics; Biodegradation; Control resistance; Heavy metals; Hydrocarbons; Pollution monitoring; Antibiotics; Biodegradation; Heavy metals; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_492; Http://aims.fao.org/aos/agrovoc/c_9261; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_3719.
Ano: 2007 URL: http://hdl.handle.net/1834/4257
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Characterisation and expression of four mRNA sequences encoding glutathione S-transferases pi, mu, omega and sigma classes in the Pacific oyster Crassostrea gigas exposed to hydrocarbons and pesticides ArchiMer
Boutet, Isabelle; Tanguy, Aurelie; Moraga, Dario.
Hydrocarbon and pesticide pollution in coastal ecosystems can disturb marine bivalve metabolism. In this study, we characterised four full-length cDNA sequences encoding glutathione S-transferases (GSTs) in the Pacific oyster Crassostrea gigas. A BLAST X search showed that these four sequences encode GSTs from four different classes: GST pi, sigma, mu and omega. A phylogenetic analysis of GST was made to determine the position of oyster GST compared to invertebrate and vertebrate sequences. We developed a semi-quantitative, multiplex RT-PCR to follow the expression of these four GSTs in tissues of oysters exposed to hydrocarbons and two pesticide treatments ( glyphosate and a mixture composed of atrazine, diuron and isoproturon) under experimental...
Tipo: Text Palavras-chave: Crassostrea gigas; Gene expression; Multiplex RTPCR; Pesticides; Hydrocarbons; CDNA sequences; Glutathione S transferases.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-431.pdf
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Comparing plastic syringes and disposable columns to extract n-alkanes in forage and concentrate feeds Ciência Rural
Oliveira,Dimas Estrasulas de; Tedeschi,Luis Orlindo.
Saturated aliphatic hydrocarbons (n-alkanes) were extracted from feed, orts, and bovine fecal samples using disposable, plastic 5mL-syringes as an alternative material to disposable columns, which are normally used in the liquid-solid extraction phase of n-alkanes. For both methods, the n-alkane extracts (carbon chain length between 31 and 36 atoms) were identified using gas chromatography. The linear regression between methods were: 1) feces: column Alkane=2.63+0.92×syringeAlkane [r²=0.94, square root of the mean square error (RMSE)=13.7mg kg-1, n=30] from which the intercept and the slope did not simultaneously differ from zero and unity (P>0.05), respectively; 2) feeds: column Alkane=0.36+1.12×syringeAlkane (r²=0.85, RMSE=1.9mg kg-1, n=21) from which...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Analysis; Digestibility; Intake; Hydrocarbons; N-alkane determination.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000800029
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Consecuencias de la contaminación por hidrocarburos del petróleo sobre la salud humana y fertilidad de suelos en Huimanguillo, Tabasco. Colegio de Postgraduados
Vázquez Luna, Dinora.
En México, el desarrollo basado en la industria petrolera ha afectado los suelos y recursos naturales del sureste del país; sin embargo, no hay estudios que vinculen sus efectos sobre el desarrollo equitativo de los habitantes en zonas contaminadas. Por ello, el objetivo del trabajo fue analizar desde la perspectiva de género, los efectos sociales sobre el desarrollo equitativo de las familias, en cuatro zonas de los ejidos de Humanguillo, Tabasco (Rovirosa, El Paraíso, La Ceiba y Gurría), que se ubican a una distancia de 0.5, 2.5, 7 y 12 kilómetros al sur la petroquímica La Venta. Se realizaron encuestas con enfoque de género y de salud, donde las unidades de análisis fueron las familias. Se realizaron análisis de suelos para determinar los efectos de la...
Palavras-chave: Género; Asma; Contaminación ambiental; Hidrocarburos; Alergias; Gender; Asthma; Environmental pollution; Hydrocarbons; Allergies; Doctorado; Desarrollo Rural.
Ano: 2011 URL: http://hdl.handle.net/10521/422
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Consecuencias de la contaminación por hidrocarburos del petróleo sobre la salud humana y fertilidad de suelos en Huimanguillo, Tabasco. Colegio de Postgraduados
Vázquez Luna, Dinora.
En México, el desarrollo basado en la industria petrolera ha afectado los suelos y recursos naturales del sureste del país; sin embargo, no hay estudios que vinculen sus efectos sobre el desarrollo equitativo de los habitantes en zonas contaminadas. Por ello, el objetivo del trabajo fue analizar desde la perspectiva de género, los efectos sociales sobre el desarrollo equitativo de las familias, en cuatro zonas de los ejidos de Humanguillo, Tabasco (Rovirosa, El Paraíso, La Ceiba y Gurría), que se ubican a una distancia de 0.5, 2.5, 7 y 12 kilómetros al sur la petroquímica La Venta. Se realizaron encuestas con enfoque de género y de salud, donde las unidades de análisis fueron las familias. Se realizaron análisis de suelos para determinar los efectos de la...
Palavras-chave: Género; Asma; Contaminación ambiental; Hidrocarburos; Alergias; Gender; Asthma; Environmental pollution; Hydrocarbons; Allergies; Doctorado; Desarrollo Rural.
Ano: 2011 URL: http://hdl.handle.net/10521/422
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Critères de pollution par hydrocarbures dans les sédiments marins. Étude appliquée à la pollution du "Bohlen" ArchiMer
Marchand, Michel; Roucache, J.
In October 16, 1976, the tanker "Bohlen" was wrecked in the Mer d'Iroise, at about 35 miles of Brest, and lossed about 7 000 t of Boscan crude oil. The coast of Brittany was polluted by 3 000 t, and 4000 t were dispersed in the marine environment. In July 1977, 23 surface sediment samples were collected to look for the traces of oil spill in the sea bottom, 9 months after the shipwreck. Only one sediment was very iittle polluted by the Boscan crude oil. Elsewhere, two other kinds of oil pollution were observed in sorne sediment samples. Severa! quantitative and qualitative criteria were used to research sorne oil pollution in the marine sediments and to know the origin: hydrocarbon concentrations, ratios total organic extra ct 1 organic carbon,...
Tipo: Text Palavras-chave: Pollution; Hydrocarbures; Sédiments; « Bohlen »; Pollution; Hydrocarbons; Sediments; "Bohlen".
Ano: 1981 URL: http://archimer.ifremer.fr/doc/00121/23206/21051.pdf
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Distribution quantitative de la meiofaune dans un milieu fortement anthropise : le vieux port de Bizerte (Tunisie) OceanDocs
Essid, N.; Mahmoudi, E.; Beyrem, H.; Aissa, P.; Hedfi, A..
The survey of sediment and hydrological parameters in the old harbor of Bizerte has revealed that this ecosystem knows a high anthropogenic pressure. In this area waters were characterized by weak contents in dissolved oxygen and sediments, rich in fine fraction, were loaded in hydrocarbons and in organic matter. The free-living nematodes, predominant taxa, responded to these disturbances by a significant decrease in their densities and their biomasses and had tendency, notably at the most isolated sites, to penetrate deeply to escape surface sediments highly loaded in hydrocarbons and in organic matter.
Tipo: Journal Contribution Palavras-chave: Hydrocarbons; Pollution effects; Pollution indicators; Meiobenthos; Harbours; Man-induced effects; Bioindicators; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_3719.
Ano: 2003 URL: http://hdl.handle.net/1834/1115
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Ecosystemes benthiques profonds et chimiosynthese bacterienne: Sources hydrothermales et suintements ArchiMer
Laubier, Lucien.
Hydrothermal communities of various species compositions have been described from the eastern and western Pacific and Atlantic. Brine and cold seeps and hydrocarbon seepages have been found off Florida, off the Oregon and Japanese subduction systems, on the Laurentian Fan, near Barbados, and off Louisiana. Biomasses range from 10 to 70 kg/m super(2), fresh weight. Basic microdistribution of species groups in aureoles centered around hydrothermal vents reveals different levels of adaptation to harsh physico-chemical conditions. Two groups of primary producers can be recognized: a highly efficient cool water group with large vestimentiferan tube worms and bivalves, and alvinellid polychaetes adapted to hot waters. Both groups are exploited by specific...
Tipo: Text Palavras-chave: Bivalvia; Polychaeta; Bacteria; Symbionts; Biosynthesis; Chemosynthesis; Food webs; Biomass; Hydrocarbons; Ecosystems; Hydrothermal springs; Seepages; Brines; Benthic environment; Benthos.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/1990/acte-1171.pdf
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Effet du pétrole de l'"Amoco Cadiz" sur les oiseaux de mer. Bilan provisoire ArchiMer
Monnat, J.y..
Immediatly following the AMOCO CADIZ oil spill, the S.E.P.N.B. carried out health centers for oiled birds from Finistère, and estimated the impact of the oil spill on seabirds. In the whole, 15 to 20 000 birds are dead because of the AMOCO CADIZ oil spill. 41 species have been oiled, among which 35 usually live in marine environment. The species most stressed belong to alcidae. The mortality rate (0,1 bird/ton of oil) seems to be, at. present day, the lowest rate never mentionned in the litterature.
Tipo: Text Palavras-chave: Pollution; Hydrocarbures; AMOCO CADIZ; Oiseaux; Nord-Finistère; Côtes-du- Nord; Pollution; Hydrocarbons; AMOCO CADIZ; Birds; Northen Brittany.
Ano: 1978 URL: http://archimer.ifremer.fr/doc/00306/41723/40934.pdf
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Estados fenológicos tempranos de frijol [Vigna unguiculata (L.) Walp], bacterias y actividad enzimática: indicadores de toxicidad del petróleo intemperizado. Colegio de Postgraduados
Ramírez May, Ana Guadalupe.
El objetivo de esta investigación fue evaluar el efecto de los hidrocarburos totales del petróleo intemperizado (HTPI) al final de dos estados del crecimiento vegetal, en la densidad de bacterias fijadoras de N de vida libre (BFN) en suelo-rizosfera, de asociación simbiótica (Rhizobium) en nódulos y la actividad enzimática de la ureasa en suelo plantado con Vigna unguiculata, para obtener indicadores biológicos de toxicidad. Se utilizaron dos Gleysoles del estado de Tabasco, México. Gleysol 1 (sitio 1) ubicado a 2 Km al sureste del Complejo Procesador de Gas La Venta, en el ejido José Narciso Rovirosa, Huimanguillo, se colectaron en nueve puntos suelos con diferentes contenidos de HTPI (5 822, 6 536, 13 803, 14 431, 15 923, 23 313, 25 517, 28 465, 50 297...
Palavras-chave: Bacterias; Nódulos; Hidrocarburos; Toxicidad; Bacteria; Nodules; Hydrocarbons; Toxicity; Producción Agroalimentaria en el Trópico; Maestría.
Ano: 2012 URL: http://hdl.handle.net/10521/716
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Estudio comparativo de tres épocas del año en características químicas, plantas y organismos de suelo contaminado con petróleo en La Venta, Tabasco, México. Colegio de Postgraduados
Dorantes Avelino, Rodrigo.
En esta investigación el objetivo fue evaluar las propiedades físicas, químicas y biológicas en un suelo Agrícola y Pecuario para un día específico en tres épocas del año, así como el efecto de los hidrocarburos del petróleo y acumulación de precipitación en el ejido José Narciso Rovirosa, Huimanguillo, Tabasco. El sitio seleccionado es un área de 44,321.199 m2 ubicada al sureste del Complejo Procesador de Gas La Venta, el suelo es receptor de petróleo crudo desde hace 20 años y fue descontaminado en abril 2002. Se establecieron (de agosto 2009 a abril 2010) nueve puntos (2x2 m) experimentales distribuidos completamente al azar. Se realizaron tres muestreos (30 de septiembre del 2009, 30 de enero y 30 de abril del 2010). Se determinó; la acumulación de...
Palavras-chave: Bacterias; Biomasa aérea; Hongos; Hidrocarburos; Precipitación; Bacteria; Biomass; Fungi; Hydrocarbons; Precipitation; Maestría; Producción Agroalimentaria en el Trópico.
Ano: 2010 URL: http://hdl.handle.net/10521/240
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Estudio comparativo de tres épocas del año en características químicas, plantas y organismos de suelo contaminado con petróleo en La Venta, Tabasco, México. Colegio de Postgraduados
Dorantes Avelino, Rodrigo.
En esta investigación el objetivo fue evaluar las propiedades físicas, químicas y biológicas en un suelo Agrícola y Pecuario para un día específico en tres épocas del año, así como el efecto de los hidrocarburos del petróleo y acumulación de precipitación en el ejido José Narciso Rovirosa, Huimanguillo, Tabasco. El sitio seleccionado es un área de 44,321.199 m2 ubicada al sureste del Complejo Procesador de Gas La Venta, el suelo es receptor de petróleo crudo desde hace 20 años y fue descontaminado en abril 2002. Se establecieron (de agosto 2009 a abril 2010) nueve puntos (2x2 m) experimentales distribuidos completamente al azar. Se realizaron tres muestreos (30 de septiembre del 2009, 30 de enero y 30 de abril del 2010). Se determinó; la acumulación de...
Palavras-chave: Bacterias; Biomasa aérea; Hongos; Hidrocarburos; Precipitación; Bacteria; Biomass; Fungi; Hydrocarbons; Precipitation; Maestría; Producción Agroalimentaria en el Trópico.
Ano: 2010 URL: http://hdl.handle.net/10521/240
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Estudio de impacto ambiental en Punta Fort William, verano austral: 1995-1996, 1997-1998 OceanDocs
Valencia T., M..
Durante los veranos australes de 1995-1996 y 1997-1998 se llevó a cabo, en Ensenada Guayaquil, cuerpo de agua aledaño a Punta Fort William, Isla Greenwich, del archipiélago de las Shetland del Sur, lugar del asentamiento de la Estación Científica "Pedro Vicente Maldonado", estudios químicos de la calidad de las aguas tendientes a determinar el eventual impacto que las actividades humanas pudieran ocasionar sobre tal ecosistema. Se presenta información acerca de las condiciones de oxigenación de las aguas, temperatura y salinidad de las mismas, la capacidad nutricia en relación con la concentración de micronutrientes inorgánicos así como información acerca de la presencia de hidrocarburos del petróleo disueltos y dispersos y, para establecer la efectividad...
Tipo: Journal Contribution Palavras-chave: Environmental impact; Water quality; Hydrocarbons; Waste water; Dissolved oxygen; Chemical analysis; Environmental impact; Water quality; Waste water; Dissolved oxygen; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_24927; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_3719.
Ano: 1998 URL: http://hdl.handle.net/1834/3850
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Estudio de la contaminación con hidrocarburos de un ecosistema de manglar en cayo Santa María, Jardines del Rey, Cuba OceanDocs
Bermúdez Acosta, Jelvys; González Delgado, Alejandro; Castro Hernández, Yoelvis; Ortiz Guilarte, Eudalys; Núñez Moreira, Roberto; Oramas García, Julio; García García, Yaliany.
El propósito de esta investigación fue estudiar la contaminación de un ecosistema de manglar impactado con hidrocarburos en el sector centro sur de Cayo Santa María, Jardines del Rey, Cuba. Para el estudio de los indicadores microbiológicos y fisicoquímicos fue diseñado un muestreo estratificado, donde se seleccionaron dos estratos y diez estaciones de muestreo, considerando los patrones de flujos de marea en pleamar y bajamar, así como el impacto perceptible de la contaminación. La determinación de las poblaciones de microorganismos heterótrofos totales (BHT) y degradadores de petróleo (BDP) en agua y sedimentos se realizó por el método de conteo de colonias, expresadas como UFC·mL-1 o UFC· g-1 según la matriz de análisis. El contenido de hidrocarburos...
Tipo: Journal Contribution Palavras-chave: ASW; Cuba; Degradation; Dispersion; Hydrocarbons; Microorganisms; Pollution.
Ano: 2014 URL: http://hdl.handle.net/1834/5912
Registros recuperados: 36
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