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Amélioration de la sélectivité des chalutiers Pêcherie multispécifique – Manche - Mer du Nord (selecmer) ArchiMer
Leonardi, Sophie; Rubin, Alex; Meillat, Marc; Coppin, Franck; Delpech, Jean-paul; Morandeau, Fabien; Larnaud, Pascal.
Ce rapport fait la synthèse des travaux réalisés en 2008 et en 2009 au cours du programme Selecmer. Celui-ci, réalisé à l'initiative des professionnels de la pêche en partenariat avec l'Ifremer, avait pour objectif de travailler à améliorer la sélectivité du chalut de fond qu'ils utilisent afin de diminuer les rejets des individus hors-tailles1, en particulier pour le merlan, tout en limitant les pertes commerciales immédiates. Une première phase a consisté à tester l'efficacité de fenêtres à mailles carrées. La deuxième phase a eu pour objectif de développer une grille sélective. Des essais en bassin et des campagnes vidéo en mer ont permis d'apporter des ajustements aux dispositifs sélectifs. L'ensemble des essais de sélectivité à bord des navires de...
Tipo: Text Palavras-chave: Professional fishermen; Square mehs; Flume tank; Selective grid; North Sea; Channel; Bottom trawl; Selectivity; Fishing; Professionnels; Mailles carrées; Campagnes à la mer; Bassin d'essais; Grille sélective; Mer du Nord; Manche; Chalut de fond; Sélectivité; Pêche.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/rapport-6776.pdf
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Aspects temporels de l' impact de rejets radioactifs effectues en mer, sur les eaux d' une station littorale de la Manche ArchiMer
Fraizier, Albert; Guegueniat, Pierre; Salomon, Jean-claude.
Time-dependent impact of seaward radioactive discharges on waters of one coastal station of the English Channel. The disposai at sea of liquid waste from the nuclear fuel reprocessing plant at La Hague (CEA/Cogema) causes modifications to the radioactivity of marine waters in both space and time. Fluctuations in this radioactivity are controlled by many different parameters; to study these parameters, samples were taken, in particular, from a coastal site situated 5 km from the outlet pipe. The overall impact of these releases on the radioactivity of sea-water depends on various factors, including the amount and frequency of discharges, the hydrodynamic regime of water masses in the region and local meteorological conditions. In order to assess this...
Tipo: Text Palavras-chave: Manche; Eaux littorales; Radioactivité; Transferts; Analyse temporelle; Channel; Coastal waters; Radioactivity; Mass transfer; Time-series analysis.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/publication-541.pdf
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Atlas des Diatomophycées des côtes françaises et des aires marines adjacentes ArchiMer
Paulmier, Gerard.
This Atlas puts the list of main diatoms from phytoplanktonic collects carried out in the French waters and bordering marine areas. A simple key of genera is set up and listed species are illustrated by photographies obtained with light microscope, and by drawings.
Tipo: Text Palavras-chave: Iconographie list; Mediterranean See; Channel; Atlantic; French coasts; Diatoms; Liste iconographique; Méditerranée; Manche; Atlantique; Côtes françaises; Diatomées; Diatomophycées.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/1997/rapport-2452.pdf
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Computed residual flow through the Dover Strait ArchiMer
Salomon, Jean-claude; Breton, Marguerite; Guegueniat, Pierre.
A two-dimensional numerical model was used for the empirical deduction of a mathematical expression of water flow through the Dover Strait, for all conditions of tide, wind and ocean slope. The theoretical results were correlated with sea measurements of radioactive tracers discharged at La Hague cape. Nine actual years (1983-1991) were then examined, determining an average annual flow of 114000 mas-1 with a very high monthly variability, but with little difference from one year to the next. These residual currents being highly sensitive to weather conditions, the mildness of the past few years has occasioned a decrease in fluxes towards the North Sea
Tipo: Text Palavras-chave: Manche; Pas de Calais; Débit; Modèle; Marée; Channel; Dover Strait; Flow; Model; Tide.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/publication-542.pdf
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Contribution à l'étude de faisabilité d'une usine marémotrice dans le Golfe normano-breton - Zooplanctonologie halieutique ArchiMer
Martin, Jocelyne; Halgand, Daniel.
Zooplankton study presented in this paper, is one of the three parts of fish ecology study undertaken by IFREMER in 1983 on Electricité de France request. The present work draws up an inventory of young stages from meroplanktonic species (fish eggs and larvae, crustacean larvae and postlarvae) in the area studied (a part of gulf of St Malo) together with rather large holoplanktonic organisms. Sampling period (from March to September) and periodicity were choosen according to study of hatching area and period of economical crustaceans. An hydrological study was carried out in the same time.
Tipo: Text Palavras-chave: Zooplancton; Ichtyoplancton; Larves; Crustaces; Hydrologie; Manche; Zooplankton; Ichtyoplankton; Crustacean; Larvae; Hydrology; Channel.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/00004/11539/8125.pdf
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Evaluating The Budgeting Approach of Operation and Maintenance of Irrigation in Indonesia by Using Analytic Hierarchy Process CIGR Journal
Sachro, Sri Sangkawati; Kurniawan, Vittorio; Hadihardaja, Joetata; Hadihardaja, Iwan K.
Currently, the Indonesian government calculates the operation and maintenance (O&M) budget by considering the size of the irrigation-area. The problem is, the O&M cost is not always proportional to the size of the area. In fact, infrastructure (such as irrigation channel and hydraulic structures) could be decisive in determining the amount of the required budget. This study will assess the difference in the O&M cost between the government’s policy and the new approach using AHP method. The new method has been formulated by the observation in West Java so this study will attempt to apply it to the various irrigation-area in Central Java. As for the result, the direct applicatoin of the formula will yield unsatisfying result hence improvisation...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Civil Engineering O&M budget; AHP; Irrigation infrastructure; Area; Channel; Hydraulic structure.
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4558
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Identification biogéographique des principaux stocks exploités en Manche, relations avec ceux des régions voisines ArchiMer
Bennet, D; Casey, J; Dare, P; Dawson, W; Flatman, S; Hulme, T; Macer, C; Millner, R; Pickett, G; Vince, M; Lorance, Pascal; Souplet, A; Giret, M; Morin, Jocelyne; Berthou, A; Latrouite, Daniel; Morizur, Yvon; Bossy, S; Ozanne, S.
At present, the majority of fisheries are monitored and regulated in areas which are delineated by arbitrary ICES boundaries which do not necessarily have logical or consistent relationships with biological processes or fish movements. The biogeographical identification of Channel stocks is, therefore, an important step towards developing a rational strategy for the management of their fisheries. This synthesis is based on the wide available knowledge which has not been yet entirely exploited with the purpose of stock identification, for 25 commercially important species in the Channel. In addition, principal technics for stock identification are reviewed likewise environmental characteristics of the Channel, which represent fundamental components in...
Tipo: Text Palavras-chave: Environnement physico chimique; Méthodes d'identification; Migrations; Zones de ponte; Distribution géographique; Espèces exploitées; Identité de stock; Manche; Physical environment; Identification methods; Migrations; Spawning areas; Geographical distribution; Exploited species; Stock identification; Channel.
Ano: 1993 URL: https://archimer.ifremer.fr/doc/1993/rapport-719.pdf
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Impact de la salmoniculture marine sur l'environnement en rade de Cherbourg (1993-1995) 1. Eau et Pélagos ArchiMer
Merceron, Michel; Bentley, Daniel; Le Grand, Jacqueline; Lamort-datin, Laure; Kempf, Marc.
The environmental impact of a brown trout farm located in the Grande Rade de Cherbourg (Normandy) is reported. During observations the fish stock evolved within the range of 140 to 350 metric tons. Farm influence was researched on water column through hydrochemistry, phytoplankton, faecal bacteria and, on bottom, through grain size, organic matter, metals, macrobenthos. This report only deals with water column. Except ammonia, no hydrological parameter seems to be affected, even near to the net pens. Phytoplankton and coliform bacteria were not altered. An extra concentration of ammonia was detected at some tens meters from the raft, with favourable conditions. But generally it was impossible to observe it unless close to the farming structure, downward...
Tipo: Text Palavras-chave: Channel; Current; Faecal bacteria; Phytoplankton; Hydrology; Impact; Salmonid; Fish farm; Manche; Courant; Bactéries fécales; Phytoplancton; Hydrologie; Impact; Salmonidé; Aquaculture.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/1997/rapport-3342.pdf
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La flottille artisanale française de Manche Ouest. Bilan des connaissances ArchiMer
Morizur, Yvon; Berthou, Patrick; Latrouite, Daniel; Veron, Gerard.
A survey made during 1986-1987 on the artisanal fleet of the artisanal fleet in Northern Brittany and Western part of Cotentin allowed to describe this fleet in term of activity and metiers. Catches are given by species and by type of fishing activity. The result permit to outline interactions between the various activities and exploited resources. A summary of knowledge on exploited species is given.
Tipo: Text Palavras-chave: Flottille; Métiers; Typologie; Interactions; Expèces exploitées; Manche; Fleet; Metiers; Interactions; Exploited species; Channel.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/00422/53390/54252.pdf
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Les pêcheries artisanales de Manche Est. Flottilles et ressources halieutiques ArchiMer
Lemoine, Michel; Giret, Marc.
From Normandy to Belgium bordary, the coastal fishery became during the ten last years a significant social and economic actor, which mostly lives by predominant exploitation of eastern Channel. Recently discovering a situation of resource overexploitation and a difficult cohabitation between "métiers", these coastal fleets are in the heart of various preoccupations of managment at regional, national and european levels. Since 1985, a coordinated programme including Boulogne and Ouistreham allowed to progress in the knowledge of complex fisheries through: improvement of statistics, characterisation of coastal fleets and their activity, assessment of the knowledge on the resources. This synthesis describes, for 1987-88, the quality of the regional landings...
Tipo: Text Palavras-chave: Typologie; Pêcheries artisanales; Flottilles; Ressources; Manche Est; Métiers; Typology; Fisheries; Fleets; Living resources; Channel; "Métiers".
Ano: 1990 URL: https://archimer.ifremer.fr/doc/00503/61452/65200.pdf
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Morphology, structure, composition and build-up processes of the active channel-mouth lobe complex of the Congo deep-sea fan with inputs from remotely operated underwater vehicle (ROV) multibeam and video surveys ArchiMer
Dennielou, Bernard; Droz, Laurence; Babonneau, Nathalie; Jacq, Celine; Bonnel, Cedric; Picot, Marie; Le Saout, Morgane; Saout, Yohan; Bez, Martine; Savoye, Bruno; Olu, Karine; Rabouille, Christophe.
The detailed structure and composition of turbiditic channel-mouth lobes is still largely unknown because they commonly lie at abyssal water depths, are very thin and are therefore beyond the resolution of hull-mound acoustic tools. The morphology, structure and composition of the Congo turbiditic channel-mouth lobe complex (90×40 km; 2525 km2) were investigated with hull-mounted swath bathymetry, air gun seismics, 3.5 kHz sub-bottom profiler, sediment piston cores and also with high-resolution multibeam bathymetry and video acquired with a Remote Operating Vehicle (ROV). The lobe complex lies 760 km off the Congo River mouth in the Angola abyssal plain between 4740 and 5030 m deep. It is active and is fed by turbidity currents that deposit several...
Tipo: Text Palavras-chave: Congo deep-sea fan; Lobe; Lobe complex; Channel; Channel-Lobe Transition Zone; Angola basin; Slump; Slide; Debrite; Turbidite; ROV; Bathymetry; Seismic; Sediment core.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00378/48976/49383.pdf
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Mortalité du tourteau Cancer pagurus provoquée par le dinoflagelle parasite : Hematodinium sp. ArchiMer
Latrouite, Daniel; Morizur, Yvon; Noel, Philippe; Chagot, Dominique; Wilhelm, G.
Unusural crab mortality in winter led us to identify a Hematodinium like parasitic dinoflagellate in the blood of edible crabs Cancer pagurus. Crabs from several fishing areas (the English Channel, the Iroise sea, the bay of Biscay, off Scotland) and from one area of the Channel shore were examined. The crab parasit was found everywhere we investigated and throughout the year. The prevalence which was found independant of the intermolt stage, sex and size of crabs was higher inshore than offshore. The pathogenicity is assumed to differ according to season.
Tipo: Text Palavras-chave: Edible crab; Pathology; Bay of Biscay; Iroise sea; Channel; Parasite; Mortality; Hematodinium; Bitter crab desease; Dinoflagelle; Aquiculture; Cancer pagurus; Mortalité; Hematodinium; Cancer pagurus; Tourteau; Pathologie.
Ano: 1988 URL: http://archimer.ifremer.fr/doc/1988/acte-1418.pdf
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Observations sur la croissance du tourteau Cancer pagurus en Manche et en golfe de Gascogne ArchiMer
Latrouite, Daniel; Morizur, Yvon.
La production française de tourteaux provient pour l'essentiel des captures réalisées en Manche et dans le Golfe de Gascogne ; l'appréhension des caractéristiques de croissance pour cette ressource est une contribution nécessaire à l'aménagement de l'exploitation des pêcheries concernées. Des expériences de marquage-recapture effectuées de 1981 à 1984 sur les populations des deux bassins permettent une approche de la croissance de Cancer pagurus pour les deux zones concernées.
Tipo: Text Palavras-chave: Molt frequency; Increment; Edible crab; Growth; Aquiculture; Bay of Biscay; Channel; Cancer pagurus; Fréquence de mue; Accroissement; Croissance; Cancer pagurus; Tourteau.
Ano: 1988 URL: http://archimer.ifremer.fr/doc/1988/acte-1417.pdf
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Observations sur la maturité sexuelle et la ponte du tourteau Cancer pagurus en Manche ArchiMer
Latrouite, Daniel; Noel, Philippe.
Few observations have been reported on the reproductive cycle and size at maturity of female edible crab in the Channel. This could be linked to non catchability of berried females. During the present study carried over three different years, females were taken from commercial catches prior to the spawning period and placed in tanks in the laboratory. The various criteria used to establish the mean size at first maturity are discussed and the relation between size and functional maturity is described. The smallest berried females are at a carapace length of 76mm, and maximum values are reached at about 105mm. The mean value is between 85 and 90mm carapace length. The duration of the spawning period was the same in each years, extending from mid-November to...
Tipo: Text Palavras-chave: Spawning; Sexual maturity; Reproduction; Channel; Cancer pagurus; Edible crab; Reproduction; Ponte; Manche; Tourteau; Maturité sexuelle; Cancer pagurus.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/acte-1420.pdf
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Rapport sur l'exercice de la pêche dans la zone côtière de la France ArchiMer
Bolopion, Jacques; Forest, Andre; Sourd, Louis-julien.
The maritime fisheries and mariculture guidance law passed in 1997 specifies that with the perspective of renegotiation of the common fisheries policy in 2002, a report on the special conditions of inshore fisheries be drawn up by the Government. To do so, the Minister of Agriculture and Fisheries entrusted this task to three experts, who are the authors of this report. In accordance with their remit, the situation of fisheries in territorial waters and estuaries of metropolitan France and the four DOM overseas departments ( counties) was examined, in the framework of meetings with professional fishermen, administrations, elected officials and scientific organisations. The first part situates fishing activities in coastal areas within the overall context...
Tipo: Text Palavras-chave: Gestion; Manche; Méditerranée; Gascogne; DOM; Conflits d'usages; Pêche côtière; Management; Channel; Mediterranean; Biscay; DOM; Conflicting uses; Coastal fisheries.
Ano: 2000 URL: https://archimer.ifremer.fr/doc/2000/rapport-1200.pdf
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Synthèse de l'activité des navires de pêche en 2003 ArchiMer
Leblond, Emilie; Merrien, Claude; Berthou, Patrick; Demaneche, Sebastien.
This programme aims to respond to the public service mission of IFREMER, which is "to know, evaluate and develop the oceans' resources and enable their sustainable use". It thus brings together projects that have ambitions specific to each. The "Halieutic Information System" (SIH) has as its goal to build the observation network of halieutic resources and associated uses. It is mainly in charge of developing indicators about fishing flotillas and their output in the form of summaries to the various actors in the fishing industry (from research to professionals and managers) and the general public. This type of output is created thanks to the implementation of a standard methodology of monitoring the activities of ships, and to the existence since 2001 of a...
Tipo: Text Palavras-chave: Metier; Atlantic ocean; Channel; North Sea; Ship activities; French fishing fleet; Fishing boats; Marine district; Metier; Atlantique; Manche; Mer du Nord; Activité des navires de pêche; Flotte française; Navires de pêche; Quartier maritime.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/rapport-2630.pdf
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Synthèse des Flottilles de Pêche 2003. Flotte Mer du Nord - Manche - Atlantique ArchiMer
Leblond, Emilie; Daures, Fabienne; Berthou, Patrick; Bermell, Sylvain; Merrien, Claude; Demaneche, Sébastien.
The document synthesizes the data collected in 2004 as part of the Fisheries Observatory of Ifremer. It updates the description of the status in 2002 of the French fishing fleets operating in the North Sea, Channel and Atlantic (published in 2003). The document is comprised of a series of leaflets. The first leaflet provides a detailed breakdown of the fishing fleet. Information provided includes vessel and crew characteristics, spatial distribution of fishing activity and catch, and gear used. A description of fleets (sub-groups of vessels using the same gear combination) is also provided at both national and regional levels. The following leaflets provide a detailed description of the fishing activity and economic status of each coast (the North Sea...
Tipo: Text Palavras-chave: France; Atlantique; Manche; Mer du Nord; Indicateurs économiques; Indicateurs d'activité; Engin; Métier; Flottille; Typologies; Pêche; France; Atlantic; Channel; North Sea; Economic indicators; Indicators of fishing activity; Gear; Metier; Fishing fleet; Typologies; Fishing sector.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/rapport-1227.pdf
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Synthèse des flottilles de pêche 2004 - Mer du Nord, Manche, Atlantique ArchiMer
Leblond, Emilie; Daures, Fabienne; Berthou, Patrick; Bermell, Sylvain; Jezequel, Michele; Merrien, Claude.
This summary reports on the characteristics of the French flotillas according to trade; allocation of ships by region; spatial distribution of the activity; average economic indicators; technical characteristics of the ships...
Tipo: Text Palavras-chave: North Sea; Channel; Metier; Fishing gear; Ship size; Atlantic ocean; French fishing fleet; Indicateur économique; Metiers; Engins de pêche; Tailles des navires; Mer du Nord; Manche; Atlantique; Flottille française.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/rapport-2631.pdf
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Synthèse des pêcheries 2000 - Flotte Mer du Nord, Manche, Atlantique ArchiMer
Berthou, Patrick; Daures, Fabienne; Guyader, Olivier; Merrien, Claude; Jezequel, Michele.
This summary of the French fisheries of the North Sea/English Channel/Atlantic for the year 2000 is done in the context of the programme "Halieutic Information Systems" that has as its goal the creation of a permanent and operational observatory of fishing. It brings together several types of data: statistical data of administrative origin, data from the IFREMER pollsters network, economic data and data acquired during sea campaigns. This first annual summary of French fisheries, meant for all actors in the fishing industry (from research to professionals and managers) and the general public, is limited to the Atlantic coast. The first part of this document contains an overall description of the English Channel Atlantic fleet, that is, all trades included....
Tipo: Text Palavras-chave: Fishing gear; French fisheries; Fishing fleet; Species; Metier; Atlantic Ocean; Channel; North Sea; Pêcheries françaises; Flottille de pêche; Engins de pêche; Espèces; Métier; Atlantique; Manche; Mer du Nord.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/rapport-2629.pdf
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Synthèse des Pêcheries 2002 - Flotte mer du Nord-Manche-Atlantique ArchiMer
Berthou, Patrick; Daures, Fabienne; Merrien, Claude; Leblond, Emilie; Guyader, Olivier; Jezequel, Michele; Bermell, Sylvain.
The document synthesizes the data collected in 2002 and 2003 as part of the Fisheries monitoring system of Ifremer. It updates the description of the status in 2000 of the French fishing fleets operating in the North Sea, Channel and Atlantic (produced in 2002). The document is made of a series of leaflets. The first leaflet provides a global description of the overall population of fishing vessels. Information provided includes vessel and crew characteristics, spatial distribution of fishing activity and catch, and gears used. A description of fleets (sub-groups of vessels using the same gear combinations) is also provided at both national and regional levels. The following leaflets provide a detailed description of the fishing activity and economic...
Tipo: Text Palavras-chave: France; Atlantique; Manche; Mer du Nord; Indicateurs économiques; Indicateurs d'activité; Engin; Métier; Flottille; Typologies; Pêche; France; Atlantic; Channel; North Sea; Economic indicators; Indicators of fishing activity; Gear; Metier; Fishing fleet; Typologies; Fishing sector.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/rapport-1226.pdf
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