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Registros recuperados: 7
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Descriptif des stations d'épuration ayant un rejet à la mer. Proposition d'un système de contrôle définissant la qualité du milieu marin 5
Burgeot, Thierry; Fillon, Alain.
La surveillance et le suivi de la qualité du milieu est une des missions essentielles confiées au Laboratoire CSRU. Au Laboratoire de La Rochelle, le problème de l'assainissement et en particulier des rejets en mer, dans les zones conchylicoles des effluents des stations d'épuration fait l'objet, depuis plusieurs années, d'un contrôle régulier. Chaque contrôleur assure cette tâche par des prélèvements, effectués dans les différentes stations de leur circonscription.
Tipo: Text Palavras-chave: Station épuration; Rejet; Milieu marin; Effluent; Système contrôle.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/00149/26029/24130.pdf
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Etude d'impact du rejet d'eau souterraine de la Station aqualive à Noirmoutier 5
Manaud, Francois.
La station "AQUALIVE" dans l'île de Noirmoutier doit utiliser dans un avenir proche des eaux souterraines riches en sels nutritifs à un débit de 300 m3/h. Un rejet a été constitué à l'aide du pompage expérimental reproduisant les conditions d'exploitation maximale prévues. Aucun effet certain n'a pu être observé sur l'eau de remplissage des claires (entre 1h avant et 1h après la pleine mer), ni d'effet cumulatif sur une période de 1 an.
Tipo: Text Palavras-chave: Sels nutritifs; Marais maritime; Rejet; Impact; Eau souterraine; Aquaculture.
Ano: 1986 URL: http://archimer.ifremer.fr/doc/00104/21564/19144.pdf
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Etude d'une gestion optimale des pecheries de langoustine et de poissons demerseaux en Mer Celtique. Tome 1 5
Charuau, Anatole; Biseau, Alain.
The entire study is divised into three parts : Phase 1 - Collection of data and description of fisheries. Phase 2 - Diagnosis on the exploitation level for the main species. Phase 3 - Fleets analysis and simulation of the exploitation of the fishery. In addition to the description of the fisheries, in the first part, a very cheap method for the study of discards is described for all species and all fleets, the purpose being to use length cohorts analysis according to the JONES'method (1981). Preliminary works on monks, megrim and cuckoo ray are also presented.
Tipo: Text Palavras-chave: Discard; Fleet; Demersal species; Celtic Sea; Rejet; Flottille; Espèce démersale; Mer Celtique.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/rapport-1561.pdf
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Etude d'une gestion optimale des pecheries de langoustine et de poissons demerseaux en mer Celtique. Tome 2 5
Charuau, Anatole; Biseau, Alain.
The theory of the evaluation of discards applied in phase 1 to the main eight species is described. Then, for each one, the biological parameters are calculated and diagnosis based on length cohorts analysis JONES (1981) are proposed The gadoids, whiting and cod, are heavily exploited and the catches are always recruitment dependant. The bottom species (monks, megrim, rays and Nephrops) are fully exploited or lightlhy over - exploited. Using the fisheries statistics of the data basis about the Celtic Sea, a first classification of fleets is proposed with the individual fishing powers.
Tipo: Text Palavras-chave: Puissances de pêche; Rejet; Espèce démersale; Mer Celtique; Fishing power; Discard; Demersal species; Celtic Sea.
Ano: 1989 URL: https://archimer.ifremer.fr/doc/1989/rapport-1562.pdf
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Etude spatiale des données collectées à bord des navires de pêche : en quoi est-elle pertinentes pour la gestion des rejets en mer ? 5
Pointin, Fabien.
Since 2002, the European Union (EU) Members States collect, manage and supply data for the management of fisheries and specifically of discards. In this context, at-sea observer programmes collect data on-board fishing vessels on the composition and quantity of catch, including discards. Based on these data, this study aims to analyse the spatio-temporal distribution of landings and discards so as to contribute to their management. In doing so, a mapping method based on nested grids has been developed. This method has been designed to produce pluriannual, annual and quarterly maps of landings and discards per species or group of species according to the fishing métier. A platform based on Big Data technologies has then been used with the objectives of...
Tipo: Text Palavras-chave: Rejet; Programme d’observation à la mer; Grille à mailles variables; Big Data; Obligation de débarquement; Incitations Economiques; Discards; On-board observer programme; Nested Grid; Big Data; Landing Obligation..
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00472/58415/60978.pdf
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Self-sampling of cod in the Celtic Sea 5
Bellail, Robert; Peronnet, Isabelle; Rochet, Marie-joelle; Lamothe, Julien.
Since 2003, the application of restrictive TAC for cod in area VIIb-k has led some French Professional Organisations to manage their restrictive quota by imitations of landings by trip or period or by prohibiting the landings of the smallest commercial category. In consequence of that, le level of discarding has increased by high grading practice. In the lack of available and reliable data to estimate the level of discarding and the amount of discarded fish, the assessment of Celtic Sea Cod in Divisions VIIe-k has been in recent years more and more uncertain, especially in estimating younger year classes, for a fishery which can be qualified as a recruitment fishery. On a Professional Organisation (PMA= Pêcheries Manche-Atlantique) initiative and in the...
Tipo: Text Palavras-chave: Protocole; Discard; Trawler; Sampling; Celtic sea; Cod; Protocole; Rejet; Chalutier; Echantillonnage; Mer Celtique; Cabillaud.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/rapport-6106.pdf
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Utilisation des dosages d'adenosine tri-phosphate (A T P) dans l'estimation des pertes de matières vivantes au cours du transit dans les condenseurs de la centrale de Dunkerque 5
Heral, Maurice.
Some adenosine triphosphate measurements enabled us to quantify the planktonic mortality caused by the transfer of cooling waters in the condensers of the thermic plant of Dunkerque. Concerning phytoplankton, the chlorine used as a biocide causes a loss of 70 to 95 % of the absorbed biomass. An ATP extraction method has been developed for zooplankton in order to monitor the evolution of live planktont. Results show that losses are low, if not null and that some species seem to proliferate right next to the discharge. Another approach of fish larva mortality rate, through counting on the aspiration grids seems to prove it very high.
Tipo: Text Palavras-chave: Rejet; Centrale thermique; Mortalité planctonique; Dosages adénosine triphosphate.
Ano: 1976 URL: https://archimer.ifremer.fr/doc/1976/acte-6215.PDF
Registros recuperados: 7
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