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| Registros recuperados: 200 | |
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| Shi, Xiaoyong; Chen, Lili; Zhu, Chenjian; Wang, Xiulin. |
| A cruise of survey in the 2008 Olympics boat-sailing field and adjacent area was carried out on August 28th, 2003. Preliminarily analysis on the eutrophication status was made on the basis of the content of dissolved inorganic nitrogen (DIN), dissolved inorganic phosphate (PO4-P)，dissolved oxygen(DO) and chemical oxygen demand (COD) as well. The results indicated that in most of the survey area, water quality was in accordance with the 1st class National Seawater Standard except the average concentration of petroleum hydrocarbon which was beyond the 2nd class National Seawater Standard. The concentrations of PO4-P as well as DIN were mainly influenced by the runoff or drainage from lands, with a comparatively higher concentration in the coastal areas from... |
| Tipo: Journal Contribution |
Palavras-chave: Eutrophication; Pollution; Mineral salts (nutrients). |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/5866 |
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| Chalén, F.. |
| Los hidrocarburos fueron investigados en el área costera del Litoral Ecuatoriano bajo el proyecto ODEPLAN del INP. La información evaluada corresponde al mes de octubre del 2003. Se programaron un total de 42 sitios para el muestreo de sedimentos de fondo, los cuales fueron demarcados con un GPS (Global Positional System). Las muestras de sedimentos fueron colectadas utilizando draga Van Veen, las mismas que fueron analizadas de acuerdo a la metodología señalada por UNIESCO/COI/PNUMA y leídas por Espectrofluometría. La zona mayormente monitoreada fue la Subárea A correspondiente al estuario externo del Golfo de Guayaquil, la misma que no se encontró significativamente contaminada, seguida de las Subáreas B y C, puesto que la mayoría de las concentraciones... |
| Tipo: Journal Contribution |
Palavras-chave: Hydrocarbons; Sediments; Organic compounds; Pollution; Hydrocarbon analysis. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/5373 |
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| Swennen, C.; Horpet, P.. |
| The occurrence of a penis in female gastropods of the superfamily Muricoidea (infraorder Neogastropoda) has commonly been accepted as an indicator of tributyltin (TBT) pollution. Some species seem less sensitive than others, and one belonging to the family Columbellidae has been reported that it lacks the imposex response. During a survey in South-east Asian waters, females of Cymbiola nobilis and Melo melo (family Volutidae) with a small penis and an external vas deferens were initially considered as showing imposex. Doubt arose when 100% of the females had a penis on sites where other gastropods showed no or a low imposex incidence. During the present study, several hypotheses could be rejected such as (1) that the volutes are extremely sensible for TBT;... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Indo-Pacific; Pollution; Melo; Cymbiola; 42.73. |
| Ano: 2008 |
URL: http://www.repository.naturalis.nl/record/269644 |
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| Rostagno, Bernard; Violleau, Allain; Brun, Céline; Dietrich, Patrice; Fillon, Alain; Goulletquer, Philippe; Guichet, Roger; Kantin, Roger; Legay, Didier; Loubersac, Lionel; Masson, Daniel; Rocher, Gregory; Ryckaert, Mireille; Thomas, Gerard; Fichet, Denis; Guyot, Thierry; Miramand, Pierre; Pigeot, Jacques; Seguignes, Michel. |
| Cette étude, qui a rassemblé les compétences des instances de l'Etat chargées de la surveillance du milieu littoral (DDE, DDASS, IFREMER, Université de La Rochelle) a permis de dresser, à la veille de l'an 2000, un bilan de la situation environnementale du littoral de la « mer des Pertuis». Ce bilan, diversifié dans sa présentation, passe en revue les points marquants de "l'état de santé" de l'environnement, qu'il s'agisse de pollutions ciblées (chimiques, bactériologiques) ou d'autres nuisances variées. Il met en exergue les points forts et les points faibles en matière d'environnement littoral, et rappelle les efforts mis en oeuvre par les différentes administrations chargées de sa surveillance. Dans un premier temps, plus de 250 références... |
| Tipo: Text |
Palavras-chave: Environnement; Qualité eaux; Littoral; Caractéristiques physiques; Economie; Qualité chimique; Qualité bactériologique; Phycotoxines; Biodiversité; Pollution; Recommandations; Pertuis Charentais; Département Charente-Maritime. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00072/18371/15943.pdf |
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| Mesa Mesa,Liliana; Falcón Hernández,José; Mulet De los Reyes,Alexander; Castellanos González,Juan Ramón. |
| ABSTRACT The coasts of Cuba are exposed to damage caused by the contamination by petroleum hydrocarbons. The coastal strip of the Gulf of Santiago de Cuba is an example of natural resources deterioration due to this contamination, which appears as one of its main environmental problems. In the present work, using gas chromatography, quantitative and qualitative analysis were performed based on the retention time values and the area under the chromatogram curve, which allowed characterizing the degree of contamination at four points of the bay of Santiago de Cuba: playa La Estrella (P1), “Guillermón Moncada” Port (P2) “Hermanos Díaz” Oil Refinery (P3), “Antonio Maceo” Thermoelectric Power Plant RENTE (P4). Retention times of individual peaks in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pollution; Hydrocarbons; Bay; Gas chromatography.. |
| Ano: 2021 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000100091 |
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| Le Dantec, Jean. |
| Nous avons précédemment montré que des diminutions du rendement ostréicole pouvaient être consécutives à des périodes de sécheresse, que les ruissellements dans la baie n'étaient massifs que de novembre à mai inclus par suite des variations du niveau de la nappe phréatique; que les fortes pluies de l'hiver 1960-61 avaient eu pour conséquences d'importants apports d'alluvions et la réapparition sur les terrains ostréicoles d'une couche de vase superficielle appelée localement « barotte », où pullulait une flore benthique très riche, et une revigoration momentanée de l'huître portugaise. Ces constatations nous ont incité à comparer au cours des années dernières l'évolution des chutes météoriques pendant la période novembre-mai et les fluctuations de la... |
| Tipo: Text |
Palavras-chave: Crassostrea angulata; Sel de fer; Mortalité; Pollution; Impact. |
| Ano: 1966 |
URL: http://archimer.ifremer.fr/doc/00039/15068/12402.pdf |
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| Michael, Jeffrey A.. |
| The quantity of paper recycled in the U.S. has more than doubled since 1985. International trade theory predicts that this will lead to reduced imports of paper, and a shift in domestic production toward waste paper intensive outputs (e.g., newsprint) and away from higher grade products such as printing/writing paper. Import demand elasticities with respect to input prices were estimated for newsprint, printing/writing, and all paper utilizing 20 years of monthly data. The empirical results confirm the predictions of theory, and illustrate a channel through which recycling may be more beneficial for U.S. industry than the domestic environment. |
| Tipo: Journal Article |
Palavras-chave: Import demand; Paper industry; Pollution; Recycling; Environmental Economics and Policy. |
| Ano: 1998 |
URL: http://purl.umn.edu/15086 |
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| Newell, Richard G.; Pizer, William A.. |
| Using a simple analytical model incorporating benefits of a stock, costs of adjusting the stock, and uncertainty in costs, we uncover several important principles governing the choice of price-based policies (e.g., taxes) relative to quantity-based policies (e.g., tradable permits) for controlling stock externalities. Applied to the problem of greenhouse gases and climate change, we find that a price-based instrument generates several times the expected net benefits of a quantity instrument. As in Weitzman (1974), the relative slopes of the marginal benefits and costs of controlling the externality continue to be critical determinants of the efficiency of prices relative to quantities, with flatter marginal benefits and steeper marginal costs favoring... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Stock; Externality; Regulation; Policy; Uncertainty; Price; Quantity; Tax; Tradable permit; Pollution; Climate change; Greenhouse Gas; Instrument choice; Risk and Uncertainty; Q28; D81; C61. |
| Ano: 2000 |
URL: http://purl.umn.edu/10471 |
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| Heral, Maurice. |
| In La Rochelle (october 1991) the following recommendations of consultative committee approved by the delegates meeting for this study group were : Attention was drawn to the fact that the study group on Pollution Meeting Shellfish in Aquaculture and Natural Populations (C.Res. 1991/2 : 45) was one of the council's first attempts to investigate the effect of pollution on fisheries. Delegates were encouraged to ensure a better representation of proper experts at the 1992 meeting since the 1991 meeting had been poorly attended. The recommendations from the Shellfish Committee were adopted by the council as C.Res. 1992/2 : 45 jointly with MEQC, Mariculture and ACMP. |
| Tipo: Text |
Palavras-chave: Pollution; Shellfish Committee; Recommendation. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-3063.pdf |
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| Registros recuperados: 200 | |
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