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| Registros recuperados: 53 | |
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| Le Fevre-lehoerff, G; Woehrling, Daniel. |
| Studies have been conducted at Gravelines (France) to estimate the effects of construction and then, the operation of a nuclear power plant. These studies take into account diverse sources of stress: the thermal impact ( Delta T = +11 degree C), the chlorination procedures (0.8 ppm) and the mechanical effects (flow rate 240 m super(3)/s). Distinction has been made between impacts occurring within the cooling system and impacts within the thermal plume. The ecological monitoring has been particularly concerned with water, sediment and organic matter, benthic and pelagic organisms. Results of these field studies include a baseline information in terms of physical, chemical and biological measurements and describe a "reference state" with chronological series. |
| Tipo: Text |
Palavras-chave: Centrale nucléaire; Environnement; Impact; Littoral sud de la Mer du Nord. |
| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/00267/37862/35943.pdf |
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| Hatt, Philippe-jacques; Stavrakakis, Christophe; Buchet, Vincent; Dupuy, Beatrice. |
| Le polder conchylicole de Bouin (Vendée) est le principal bassin français de production de naissains d’huîtres creuses issus d’écloseries. Depuis 2007, et malgré l’installation de dispositifs de traitement de l’eau, des anomalies dans les élevages voire des mortalités affectent la production des écloseries et nurseries du secteur, ainsi que celle de microalgues en grand volume d'une entreprise spécialisée. Les observations des professionnels orientent la recherche de la cause de ces mortalités sur les contaminants chimiques, notamment les pesticides utilisés par l'agriculture, dont les exploitations du polder agricole, qui jouxtent le polder conchylicole. Comme l'ont montré de nombreux travaux, certains de ces produits altèrent la qualité de l’eau de mer... |
| Tipo: Text |
Palavras-chave: Bassin Loire-Bretagne; Baie de Bourgneuf; Environnement; Conchyliculture; Qualité de l'eau; Pollution chimique; Bassin versant; Mortalité; Zone côtière; Loire-Bretagne district; Bourgneuf bay; Environment; Shellfish aquaculture; Water quality; Chemical pollution; Watershed; Mortality; Coastal zone. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00280/39165/37726.pdf |
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| Le tixerant, Matthieu; Bonnin, Marie; Gourmelon, Françoise; Ragueneau, Olivier; Rouan, Mathias; Ly, Ibrahima; Ould zein, Ahmed; Ndiaye, Fatou; Diedhiou, Mohamed; Ndao, Souleye; Ndiaye, Mamadou Bassirou. |
| In the marine environment, positive law generates multiple zones and regulatory limits that overlap in space, justifying a cartographic representation as a relevant approach to promote understanding (synthetic vision), analysis (highlighting legal anomalies, inconsistencies and redundancies), dissemination and communication to different audiences (awareness-raising). The article presents a methodology leading to the mapping of marine and coastal environmental law in West Africa, using a geographic information base to produce static or interactive cartographic representations via a Geographic Data Infrastructure (GDI). It shows the contribution of this type of mapping to a transversal approach in a multi-activity, multi-sectoral and multi-scale context. A... |
| Tipo: Text |
Palavras-chave: Afrique de l’ouest; Mer; Littoral; Droit de la mer; Environnement; SIG; Cartographie; West Africa; Sea; Coastal zone; Law of the sea; Environment; GIS; Cartography. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00656/76813/81628.pdf |
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| Perez-galvez, Raul. |
| In the framework of the future application of a zero-discard policy in EU fisheries, this thesis aims to develop and implement an efficient and integral waste management both on board the fishing vessels and in land (fish auctions and fish processing industry). To this end, it proposes a compaction operation able to reduce the volume and the water activity of the fish wastes, thus favouring their handling and reducing the economical costs associated to their transport and storage. To asses the viability of a waste compaction operation, the main operation factors governing the process were identified, and their influence upon the performance of the compacting operation was investigated by a statistical approach. Sardine was chosen as fish species since it... |
| Tipo: Text |
Palavras-chave: Environment; Compression; Aquaculture; Fishing; By product; Environnement; Compression; Aquaculture; Pêche; Co produit. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/these-7390.pdf |
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| Deschemin, Karine. |
| Le but de la présente étude est la recherche des causes des mortalités survenues pendant l'été 1992 au sein des populations de la coque Cerastoderma edule du Banc d'Arguin. Pour cela, une étude a porté sur les parasitoses pouvant être rencontrées chez C.edule, et une autre a eu pour objet l'étude des facteurs environnementaux. Les résultats de l'étude histo-pathologique a pennis de montrer que les coques sont infestés notamment par le Trématode Labratema minimus, mais ni le taux d'infestation ni les caractéristiques de l'invasion parasitaire peuvent laisser pressager un lien quelconque avec les mortalités constatées. Les analyses en composantes principales menées sur l'ensemble des paramètres hydrologiques étudiés ont pennis de mettre en évidence que 1992... |
| Tipo: Text |
Palavras-chave: Mortalités; Banc d'Arguin; Cerastoderma edule; Parasitisme; Environnement. |
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/00430/54132/55459.pdf |
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| Kalaydjian, Regis; Girard, Sophie. |
| The "French Maritime Economic Data" report is periodically published by Ifremer since 1997. It presents an economic assessment of the French maritime activities, their position in the national economy and in the world competition, as well as the significance of non market public services. Maritime activities in the industrial sector are assessed using a standard metrics to facilitate the periodical update of the report: turnover, gross value added, employment, number of enterprises, exports. These indicators are expressed at national level. The public sector is described by annual budgets, number of staff and personnel costs, broken down into the different public policy functions. Regional indicators are provided on activities whenever relevant and... |
| Tipo: Text |
Palavras-chave: Economie; Concurrence; Croissance; Emploi; Environnement; Europe; France; Industrie; Marin; Maritime; Valeur ajoutée; Secteur public; Services.; Economy; Competition; Employment; Environment; Europe; France; Growth; Industry; Marine; Maritime; Public sector; Value added; Services.. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00388/49962/50614.pdf |
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| Bechemin, Christian; Soletchnik, Patrick; Polsenaere, Pierre; Le Moine, Olivier; Pernet, Fabrice; Protat, Martin; Fuhrmann, Marine; Quere, Claudie; Goulitquer, Sophie; Corporeau, Charlotte; Lapegue, Sylvie; Travers, Marie-agnes; Morga, Benjamin; Garrigues, Manon; Garcia, Celine; Haffner, Philippe; Dubreuil, Christine; Faury, Nicole; Baillon, Laury; Baud, Jean-pierre; Renault, Tristan. |
| Mass mortality outbreaks (90-100%) in both juvenile and adult blue mussels were reported in 2014 along the Pertuis Charentais area of the French Atlantic coast. A series of studies were carried out to learn more about the phenomenon through detecting pathogens, describing environmental conditions and establishing the physiological status of the animals. Bacteria identif ied as belonging to the V. splendidus species were detected in dying mussels and seem able to cause mortality in blue mussels in the laboratory. Unusual environmental conditions (large amounts of fresh water, re-suspension of sediments during a series of storms, and a high renewal rate of specific water masses in Brittany’s Pertuis area) may be partially responsible for sparking the phenomen |
| Tipo: Text |
Palavras-chave: Mortalités; Moules; Pertuis Charentais; Vibrio splendidus; Environnement; Mortality; Mussels; Pertuis Charentais; Vibrio splendidus; Environment. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00312/42343/41682.pdf |
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| Gourmelon, Michele. |
| La contamination de l’environnement par des bactéries ou des virus d’origine fécale par le biais des rejets résultant des activités urbaines ou agricoles constitue un risque important pour la santé humaine et une préoccupation pour la pérennité de certains usages en zone littorale. La bactérie Escherichia coli (E. coli) a été retenue comme indicateur de contamination fécale pour évaluer la qualité sanitaire des zones conchylicoles et des zones de baignade et pour établir leur classification. L’étude des bactéries entériques et des marqueurs de l’origine des contaminations fécales dans l'environnement littoral constitue l’essentiel de mes activités de recherche à l’Ifremer. C’est ce travail qui sera présenté lors de cette soutenance. J'’ai tout d’abord... |
| Tipo: Text |
Palavras-chave: Contamination microbiologique; Littoral; Bactéries entériques; Environnement; Contaminatin fécale. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00256/36764/35369.pdf |
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| Thillaye Du Boullay, Herve; Joly, Jean-pierre. |
| L'étude effectuée en 1986 et 1987, a eu pour but de réaliser un état de référence des eaux conchylicoles en Basse Normandie en application de la Directive CEF du 30 Octobre 1979. Un jugement critique est porté sur ce texte tel qu'il est rédigé au niveau des paramètres retenus, de leur fréquence et ceci en fonction des résultats acquis et des problèmes rencontrés. Sur le plan bactériologique, 12 zones sont classées conformes et 5 non conformes. Les résultats obtenus sur les différents métaux et pesticides organo-halogénés étudiés situent la Basse-Normandie dans la moyenne nationale.Il faut noter cependant une augmentation de la concentration de certains paramètres (Hg,Pb,Cd) sur 2 points de la côte du Calvados. |
| Tipo: Text |
Palavras-chave: Environnement; CEE; Qualité; Eaux conchylicole; Basse Normandie. |
| Ano: 1989 |
URL: http://archimer.ifremer.fr/doc/00092/20359/18020.pdf |
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| Feuillette, Sarah; Levrel, Harold; Blanquart, Stéphanie; Gorin, Olivier; Monaco, Guillaume; Penisson, Bruno; Robichon, Stéphane. |
| In the context of the Water Framework Directive, the French Water Agencies were asked to justify exemptions, for disproportionate cost reasons, to the “good water” status in a series of river basins in 2015. The ministry of the Environment and the economists of the Water Agencies agreed on the fact that this justification would be based on cost-benefit analyses. A great number of cost-benefit analyses were carried out on water bodies or groups of water bodies. This article reports on this experience conducted by the French Water Agencies. It highlights the fact that the large majority of restoration projects generated higher costs than benefits. It suggests that the implementation of the Water Framework Directive could be considerably limited by the use of... |
| Tipo: Text |
Palavras-chave: Environnement; Dispositifs institutionnels; Eau; Évaluation économique; Coûts disproportionnés; Environment; Institutional systems; Water; Economic valuation; Disproportionate costs. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00480/59158/61787.pdf |
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| Jourdain, Céline. |
| In order to find the global parameters which could explain the growth of Pacific Oyster Crassosrrea gigas. a survey of Pacific Oyster's growth has been done in Brittany from 1990 to 1995 and in France from 1993 to 1995. The analysis shows the positive influence of rain amount on weight grov,th except in eutrophic areas where it is the contrary. It also shows the positive influence of temperature provided it stays within an optimal range. statistically defined. Some characteristics of the production areas have been reviewed without achieving clear explanation of growth differences between sites. Further studies are necessary particularly in hydrodynamics and primary production determinism to progress. |
| Tipo: Text |
Palavras-chave: Huitre creuse; Crassosrrea gigas; Croissance; Meteorologie; Environnement; REMORA. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00082/19322/16916.pdf |
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| Lapegue, Sylvie; Heurtebise, Serge; Cornette, Florence; Brizard, Raphael; Sharbel, Tim; Boudry, Pierre. |
| L'ostréiculture française réalise une production très largement extensive, basée sur le recrutement de juvéniles dans le milieu naturel et la production sur des sites côtiers. Ainsi, l’huître est l’une des rares espèces cultivées à être encore considéré par le consommateur comme un produit alimentaire totalement « naturel ». L'utilisation de la polyploïdisation a permis d'ouvrir une nouvelle voie dans cette filière, en permettant d'obtenir des animaux à croissance plus rapide, plus homogènes et stériles. Cette dernière caractéristique est un gage de qualité gustative et permet aussi de positionner ce produit en priorité sur les mois en "r" traditionnellement bannis à cause de la présence de laitance. Le but principal de la triploïdisation a été atteint:... |
| Tipo: Text |
Palavras-chave: Génétique; Triploïdisation; Tétraploïde; Impact; Environnement; Bivalvia; Crassostrea gigas. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/00043/15460/12835.pdf |
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| Kempf, Marc; Jacq, E; Le Guellec, C; Merceron, Michel; Monfort, Patrick; Nezan, Elisabeth; Ryckaert, Mireille. |
| This document presents a year-long (1994) environmental study conducted on a site of intensive farming of salmonids (mainly fario trout) in Camaret Bay. A set of parameters were considered for the body of water and the sea bed (flow patterns, hydrology, sedimentology, biology, chemistry) and complemented by video observations. The study concluded that there was a measurable effect from the farm in its current configuration, but that the impact was of a very limited intensity and scope that did not affect the environment in a substantial way. It is recommended that production growth be accompanied by a minimum amount of environmental assessment. |
| Tipo: Text |
Palavras-chave: Bretagne; Truite fario; Salmonidés; Environnement; Pisciculture marine. |
| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/1995/rapport-2834.pdf |
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| Alfonso, Sebastien. |
| In the frame of this thesis, we first studied the establishment of personality in teleost, the consistency across context and different life stages as well as the associated physiological mechanisms. Personality appeared consistent across contexts over a short time period but it was no longer the case over a long period of time, especially between different life stages. Physiological mechanisms of stress regulation, as well as activity and neural plasticity, differed according to individual boldness. Then, we studied the physiological and behavioural responses of teleost fish chronically exposed to an environmentally relevant mixture of POP (PCBs and PBDEs), as well as those of their unexposed offspring. Different behavioural alterations in larval... |
| Tipo: Text |
Palavras-chave: Polluants; Comportement; Environnement; Stress; Polluants; Stress; Teleost fish; Environment. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00499/61019/64421.pdf |
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| Registros recuperados: 53 | |
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