Consulta: creatorFacets:"Prouzet, Patrick"
Registros recuperados: 39
Data/hora: 02/06/2024 06:40:43

Etude de la production de juvéniles de saumon atlantique (Salmo salar). II - Influence de la densité sur l'alevinage. Campagne 1980-1981 Pisciculture du Quinquis
Provedor de dados: 5
Autores: Gaignon, Jean-louis; Prouzet, Patrick.
Les résultats de la campagne 1979-1980 ont montré la nécessité d'améliorer les performances de l'alevinage pour obtenir des résultats de production intéressants en cycle ouvert dans les conditions bretonnes. En effet, une augmentation du taux de smoltification à un an ne semble pouvoir être obtenue dans des conditions économiquement intéressantes (Charge très supérieure à 2 kg/m2), qu'à condition que la taille des tacons soit au moins égale à 6-7 cm en septembre de la première année. En conséquence, l'objectif expérimental de la saison 1980-1981 est de déterminer les conditions d'élevage qui puissent permettre d'obtenir un population homogène ayant une bonne croissance c'est-à-dire très supérieure à celle obtenue en 79-80....
Tipo: Text
Palavras-chave: Aquaculture; Pisciculture; Production; Juvéniles; Salmo salar; Densité.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/00143/25381/23519.pdf

Fécondité des saumons de plusieurs hivers de la Nive
Provedor de dados: 5
Autores: Prouzet, Patrick; Martinet, J. P.
1. Captures des géniteurs Les saumons ont été capturés sur la Nive au barrage de Chopolo situé sur le cours inférieur à proximité de la localité d'Ustaritz (figure 1).  Cette opération a été réalisée à l’aide d’une trappe de capture aménagée dans le bassin supérieur de la passe à ralentisseurs.  En tout 20 géniteurs ont été capturés sous la responsabilité du CSP et de l'INRA durant la période d'autorisation de capture du 10 mai au 31 juillet 1988. Sur ces 20 saumons, on comptait 19 femelles pour un mâle. Une des femelles était marquée et provenait d'un repeuplement effectué sur la Nivelle par l'INRA. Elle a été de ce fait écartée du lot.
Tipo: Text
Ano: 1989
URL: http://archimer.ifremer.fr/doc/00068/17940/15475.pdf

Mathematical model and numerical simulations of the migration and growth of Biscay Bay anchovy early larval stages
Provedor de dados: 5
Autores: Boussouar, Ahmed; Le Bihan, Soizick; Arino, Ovide; Prouzet, Patrick.
The paper presents a mathematical model of the early larval stage, from spawn to the resorption of the yolk-sac, of the anchovy, Engraulis encrasicolus, of the Bay of Biscay. The model describes the temperature-dependent growth and drift of passive larvae by the currents and vertical turbulence. A numerical code has been built and numerous simulations, fed by both biological (egg surveys by AZTI-San Sebastian, Spain, and IFREMER, France) and physical (circulation model by IFREMER-Brest, France) data, were undertaken. Their main features are presented and discussed here, and some conclusions on the possible utilization of the results in improving estimates of anchovy stocks by the daily egg production method are drawn.
Tipo: Text
Palavras-chave: Passive stage; Numerical simulation; Migration; Growth; Anchovy; Stade passif; Simulation numérique; Migration; Croissance; Anchois.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-518.pdf

Rapport sur la pêche des marins pêcheurs dans l'estuaire de l'Adour en 1993
Provedor de dados: 5
Autores: Prouzet, Patrick; Martinet, Jean-pierre; Cuende, François - Xavier.
Situation géographique et caractéristiques de la zone prospectée par les professionnels maritimes  La zone de pêche étudiée se trouve dans la région du Bas-Adour (cf carte de situation). Elle est limitée en aval par la "barre de l'Adour" et en amont par le "bec du Gave" (confluence de l'Adour et des Gaves réunis) et la première pêcherie des Gaves Réunis. Cela représente une distance prospectée de 33 km. Cette portion de l'Adour est soumise à l'influence de la marée compte tenu de son absence d'élévation par rapport au niveau de la mer. La limite de salure des eaux fixée par le décret du 4 juillet 1853 se situe au pont d'Urt (château de Montpellier) à 22 km de la limite transversale de la mer. Ainsi, l'aire d'étude se situe à la fois en zone maritime et en...
Tipo: Text
Ano: 1994
URL: http://archimer.ifremer.fr/doc/00086/19698/17339.pdf

L'aménagement et la gestion des stocks de saumon Atlantique dans les provinces maritimes canadiennes
Provedor de dados: 5
Autores: Prouzet, Patrick.
Les Maritimes regroupent quatre provinces Canadiennes : Terre Neuve, la Nouvelle Ecosse, le Nouveau Brunswick et l'Ile du Prince Edouard. La superficie des Maritimes est de 539 000 km2, soit 5% de la superficie totale du pays. Au cours de ce voyage, deux provinces des l\tlaritimes ont été visitées le Nouveau Brunswick et la Nouvelle Ecosse. Le Nouveau Brunswick (superficie 73 405 km2) possède un climat tempéré à proximité de la Baie de Fundy, mais il devient nettement continental à l'intérieur de la province. Les précipitations sont abondantes et constantes (1 041 mm en moyenne/an). Une des principales production du Nouveau Brunswick provient de la fabrication de produits manufacturés. La Nouvelle Ecosse (superficie : 55 460 km2) possède un climat...
Tipo: Text
Ano: 1983
URL: http://archimer.ifremer.fr/doc/00153/26469/24574.pdf

Identification des flux de civelles (Anguilla anguilla) à partir des relations d’allométrie en fonction des conditions hydrodynamiques de l’estuaire de l’Adour
Provedor de dados: 5
Autores: De Casamajor, Marie-noelle; Prouzet, Patrick; Lazure, Pascal.
Biological data on glass eels (Anguilla anguilla) were collected during two successive sampling periods from November to March (1996-1997 and 1997-1998) on the Adour estuary. As for other estuaries, decrease in length (mean of 73.5 to 67.4 mm) and weight (mean of 3.5 to 2.6 dg) of glass eels were observed. Weight and length characteristics were used to identify groups of glass eels. These groups were well distinguished during the first sampling period but some overlaps appeared in the second one. Fluctuations of static allometry and similarity coefficients showed successive glass eels arrivals in the lower part of the estuary during the two seasons. We used fluctuations of the index of similarity in the second period to describe arrivals of glass-eels...
Tipo: Text
Palavras-chave: Biométrie; Modèle hydrodynamique; Flux migratoires; Civelle; Estuaire de l’Adour; Biometry; Hydrodynamic model; Migratory flow; Glass-eels; Adour estuary.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00188/29897/28346.pdf

A comparison of two techniques to discriminate continental origin of Atlantic salmon (Salmo salar L.) off West Greenland
Provedor de dados: 5
Autores: Reddin, David; De Pontual, Helene; Prouzet, Patrick.
Two techniques of stock discrimination both utilizing scales, i. e. termed as classical technique and shape analysis, are compared for discriminating between North American and European Atlantic salmon (Salmo salar L.) caught off West Greenland. Three scales from each of 60 salmon were analyzed: 30 from North American and 30 from European-origin salmon collected from home rivers in 1982. The best results indicated misclassification and error rates of 0% for shape analysis and 5.0% and ± 1.7%, respectively, for the classical technique. A nested ANOVA indicated that variation was greater between scales of salmon of North American and European origin than from several scales from the same salmon. It was concluded that shape analysis with computer-aided...
Tipo: Text
Palavras-chave: Salmo salar; Scalimétrie; Analyse de forme; Discrimination; Salmo salar; Meristics; Shape analysis; Discrimination.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00189/30073/28561.pdf

Daily and seasonal estimates of the recruitment and biomass of glass eels runs (Anguilla anguilla) and exploitation rates in the Adour open estuary (Southwestern France)
Provedor de dados: 5
Autores: Bru, Noelle; Prouzet, Patrick; Lejeune, Michel.
The European eel (Anguilla anguilla) is drastically declining in all its distribution area and listed in the red list of the IUCN (International Union for Conservation of Nature). A rebuilding plan was adopted at European level in 2007, Regulation R(CE) 100/2007, to restore eel abundance to the level observed during the seventies. Its implementation started on the 1(st) of January 2009. This species is heavily threatened by numerous activities including fishing, and its management can only be effective through a systemic approach minimizing the whole range of human-induced impacts on the resource and its habitat. In the framework of the European interregional programme INTERREG IIIB-Atlantic Area-the INDICANG project aimed at elaborating abundance...
Tipo: Text
Palavras-chave: Biomass estimates; Exploitation rate; Time series; River; Glass eel; Anguilla anguilla.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00000/11170/7526.pdf

Simultaneous use of strontium:calcium and barium:calcium ratios in otoliths as markers of habitat: Application to the European eel (Anguilla anguilla) in the Adour basin, South West France
Provedor de dados: 5
Autores: Tabouret, Helene; Bareille, G.; Claverie, F.; Pecheyran, C.; Prouzet, Patrick; Donard, O. F. X.
Sr:Ca and Ba:Ca ratios in water from the Adour estuary show a clear relationship with the salinity of the surrounding water for salinities &lt;20, while ratios are almost constant above this level of salinity. A Positive relationship was observed for the Sr:Ca ratio, whereas it was inverse for the Ba Ca ratio. These two elemental ratios were measured in the otoliths of the European eels (Anguilla anguilla L) using femtosecond laser ablation linked to an ICP-MS (fs-LA ICP-MS) There was a direct relationship between the elemental ratios recorded in eel otoliths and those found in water from fresh and marine areas, suggesting that Sr Ca and Ba:Ca ratios in eel otoliths can be used as markers of habitat in this estuary Continuous profiling allowed the...
Tipo: Text
Palavras-chave: Otoliths; Anguilla anguilla; Estuaries; Water chemistry; Strontium; Barium; Laser ablation; Inductively coupled plasma mass spectrometer.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00009/11990/9042.pdf

Marine larval past of glass eel Anguilla anguilla migrating in the Adour estuary
Provedor de dados: 5
Autores: De Casamajor, Marie-noelle; Lecomte-finiger, R; Prouzet, Patrick.
Along biometric characteristics, glass eel otoliths were collected during three migration seasons, in the Adour estuary, during the new moon of January. Microstructure reading and measurements of various growth zones bring information on glass eel larval life during their oceanic migration and the transition phase in estuary. The results show significant inter-annual variations of glass eels otolithometric characteristics from the point of view of their typology as of the various growth zones measured during transoceanic migration. The differences observed between the years on the typology level could be related to very fluctuating environmental conditions during recruitment. The differences in measurements carried out on the registered otolith zones would...
Tipo: Text
Palavras-chave: Biometry; Glass eels; Oceanic migration; Larval phase; Otolith.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1544.pdf

La détermination de l'âge par scalimétrie chez le saumon atlantique (Salmo salar) dans son aire de répartition méridionale : utilisation pratique et difficultés de la méthode
Provedor de dados: 5
Autores: Baglinière, J. L.; Bomassi, P.; Bousquet, B.; Chancerel, F.; De Pontual, Helene; Dumas, J.; Euzenat, G.; Fontenelle, G.; Fournel, F.; Gayou, F.; Luquet, J. F.; Maisse, G.; Martin Ventura, J. A.; Marty, A.; Nihouarn, A.; Porcher, J. P.; Prevost, E.; Prouzet, Patrick; Pustelnik, G.; Richard, A.; Troadec, Herve.
This report confirms interpretation criteria used in scale reading for age determination of Atlantic Salmon in freshwater and in sea water with typical examples. The difficulties for age determination of wild and reared populations by showing atypical examples are presented. Finally some recommandations to a better knowledge of Atlantic salmon population in south distribution area are proposed.
Tipo: Text
Ano: 1985
URL: https://archimer.ifremer.fr/doc/00480/59127/61755.pdf

Heavy metals and organochlorinated compounds in the European eel (Anguilla anguilla) from the Adour estuary and associated wetlands (France)
Provedor de dados: 5
Autores: Tabouret, H.; Bareille, G.; Mestrot, A.; Caill-milly, Nathalie; Budzinski, H.; Peluhet, L.; Prouzet, Patrick; Donard, O. F. X.
Heavy metals and organic pollutants were investigated in the Adour estuary (South West France) and associated wetlands using the European eel (Anguilla anguilla) as a bioindicator. Heavy metals (Cu, Cd, Zn, Pb, and Ag) were measured in soft tissue of yellow eels. Mercury (total Hg and MeHg) and organochlorinated compounds (7 PCBs, 11 OCPs) were analysed in muscle. Concentrations in muscle were in agreement with moderately contaminated environments in Europe and were below the norms fixed for eel consumption for heavy metals and OCPs. Analyses of liver showed a higher pressure of Ag and Zn in the downstream estuary than in the freshwater sites whereas Cd was lower in the estuary probably because of the salinity influence. According to quality classes 100%...
Tipo: Text
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00036/14677/11987.pdf

Les pêches professionnelles dans les estuaires de la Loire et de l'Adour
Provedor de dados: 5
Autores: Guerault, Daniel; Desaunay, Yves; Beillois, Pierre; Prouzet, Patrick; Martinet, Jean-pierre; Cuende, François - Xavier.
The exploitation of amphihaline species by marine and freshwater commercial fishermen in the Loire estuary in 1989, and by marine commercial fishermen in the Adour estuary from 1985-1991 is described in this study. This fishery employs 320 fishermen and represents a commercial value of 38 million FF. This is mainly due to the exploitation of glass eel, especially in the Loire River, the landings of which have decreased alarmingly. In the Adour River, the diversity of the exploited species and the total commercial value of drift gillnet catches - on the average 43% - in this fishery are high. The landings of migratory salmonid species are high and they may attain 25% of the total commercial value. This study emphasizes the uniqueness, the socio-economic...
Tipo: Text
Palavras-chave: France; Loire; Adour; Atlantique; Socio économie; Biologie; Pêcherie estuarienne; Espèce amphihaline; France; Adour River; Loire River; Ocean; Atlantic; Socio economy; Biology; Estuarine fisherie; Amphihaline specie.
Ano: 1994
URL: https://archimer.ifremer.fr/doc/1994/rapport-1452.pdf

L'anchois du golfe de Gascogne - Généralités et campagne de pêche en 1993
Provedor de dados: 5
Autores: Prouzet, Patrick; Metuzals, K.
The anchovy, Engraulis encrasicolus L. population in the Bay of Biscay, is described in context with other Engraulidae populations in the world. Mean landings are provided for six different species from 1974 to 1992. The great variations in the abundance (up to 200 %) of these populations, in relation to upwelling and environmental parameters are also discussed. Historical changes in the French and Spanish fleet fishing for anchovy are highlighted since 1950. The main events in the development of these fisheries are detailed. The total number ofboats in the French fleet have increased from 1987-1993 whereas the number of seiners in the Spanish fleet in that peri ad remained stable since 1980. The third part of this report describes the French fishery for...
Tipo: Text
Palavras-chave: Anchois; Engraulis encrasicolus; Distribution géographique; Biologie; Pêcheries; Golfe de Gascogne; Anchovy; Engraulis encrasicolus; Geographic distribution; Biology; Fisheries; Gulf of Biscay.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00305/41644/40853.pdf

Characteristics of one sea winter Atlantic salmon stock caught on Elorn river from 1974 to 1984
Provedor de dados: 5
Autores: Prouzet, Patrick; Gaignon, Jean-louis.
From observations gathered on grilse populations sampled during the fishing period (March -mid-June) or after the fishing season, the authors noted: a strong heterogeneity and length, the mean value of which increase from May to December, a sex-ratio not different from 1 male for 1 female, a high relative fecundity superior to those of spring salmon population sampled. The comparison between fish of local and foreign origins did not allow to observe significant differences between the biological characteristics studied (weight, length, sex-ratio and fecundity).
Tipo: Text
Palavras-chave: Salmo salar; Salmonidae; Pisces; Weight; Fecundity; Sex ratio; Length weight relationships; Migratory species.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1818.pdf

Impact des facteurs anthropiques et naturels sur le fonctionnement de quelques populations halieutiques
Provedor de dados: 5
Autores: Prouzet, Patrick.
Researcher since 1974 at CNEXO (National Centre for Exploration of the Oceans), then at IFREMER (French Institute for Exploitation of the Sea), I have at the same time brought to the work of researching the dynamics of exploited ichthyologic populations actions for enhanced improvement and transfer of knowledge to help managers and stakeholders administer these resources and restore them if needed.  This activity led me to play a double role: that of the expert who is asked to set up "a truth judgment" on a given subject or according to a specific question, and that of the scientist faced with the judgment of his peers who strives not to go against his knowledge (i.e., that which is subject to the criticism of the scientific community). This change of...
Tipo: Text
Palavras-chave: Ecosystem; Ichthyology; Populations dynamics; Halieutics.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/rapport-2167.pdf

Stock characteristics of Atlantic salmon (Salmo salar) in France: a review
Provedor de dados: 5
Autores: Prouzet, Patrick.
The general characteristics of the main salmon (Salmo salar L.) stocks in the Massif armoricain (Brittany and Lower Normandy), in the Loire-Allier and in the Adour-Gaves-Nive have been summarized. Due to the poor quality of the previous fishing statistics, there is no clear picture of the historical evolution of the salmon stock. However, a dramatic decrease in the endemic range of Atlantic salmon in France can be shown since the mid-18th century a nd more particularly during the last 50 years. The lack of precise informations describing the size of the catches and the levels of exploitation at sea and in the estuaries make it impossible to estimate the impact that exploitation has led on the evolution of salmon stocks. The mean age of salmon in freshwater...
Tipo: Text
Palavras-chave: Saumon Atlantique; Salmo salar; Captures; Stocks; France; Atlantic salmon; Salmo salar; Catch records; Stocks; France.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00135/24599/22627.pdf

Actes du colloque : Des activités du Grand Littoral Atlantique à l'Observatoire des pêches et des cultures marines du golfe de Gascogne
Provedor de dados: 5
Autores: Caill, Nathalie; Prouzet, Patrick; Cuende, François-xavier; Milly, David; Pautrizel, Françoise.
Tipo: Text
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00105/21606/19186.pdf

Caracteristiques du stock de saumon atlantique (Salmo salar L.) capture a la ligne sur l'Aulne (riviere de Bretagne nord) durant la periode 1983-1981.
Provedor de dados: 5
Autores: Prouzet, Patrick.
Study of fish caught by angling on the Aulne River from 1973 to 1981provides information on the characteristics of Atlantic salmon (Salmo salar) populations and on the characteristics of the fishery. A discontinuity was noted in 1973 in the catch evolution that separates two periods: 1955-1972 (630 salmons each year) and 1973-1981 (161 salmons each years).
Tipo: Text
Palavras-chave: Salmo salar; Stock assessment; Angling; Salmon fisheries; Migratory species.
Ano: 1982
URL: http://archimer.ifremer.fr/doc/1982/publication-1840.pdf

Numerical analysis of scale morphology to discriminate between atlantic salmon stocks
Provedor de dados: 5
Autores: De Pontual, Helene; Prouzet, Patrick.
The use of an image analysis microsystem with a specially developed software enabled scale image processing, outline extraction and computation of features which are not available in the conventional approach of scale analysis. Those parameters (shape factors, moment invariants and elliptic Fourier coefficients) were introduced into a discriminant analysis process to test their usefulness in stock identification. The method was applied to European stocks originating from Norway (Etne river) and France (Elorn river). The low misclassification rate obtained indicates that this approach is particularly promising.
Tipo: Text
Palavras-chave: Saumon atlantique; Écaille; Analyse numérique; Identification de stocks; Atlantic salmon; Scale; Numerical analysis; Stock identification.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00189/30066/28554.pdf

Production de Saumon Atlantique (Salmo salar L.) Juveniles et Adultes sur un Ruisseau Pepiniere de Bretagne Nord (France) a Partir d'une Souche Irlandaise.
Provedor de dados: 5
Autores: Prouzet, Patrick; Gaignon, Jean-louis.
An extensive restocking experiment has been undertaken in 1977 on a tributary of Elorn river in the framework of an Atlantic salmon management program of this river of northern Brittany. The results gathered during this experiment permitted the analysis of S. salar production during the juvenile and adult stages from immersion of unfed fry of Irish origin in small nursery streams. The annual production during the first year represented 72% of the total production of two years of growth. Adult runs into the nursery stream were observed between mid-November and mid-December. These runs were initiated by high increases of flow rates of the nursery stream. The whole of the adult population is constituted by late grilses whose female. Their rate of return was...
Tipo: Text
Palavras-chave: France; Brittany Salmo salar Growth Spawning Stocking (organisms) Migrations.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/1981/publication-1904.pdf

Observations de l'Ifremer sur la demande d'amélioration du chenal de navigation dans l'estuaire de la Gironde
Provedor de dados: 5
Autores: Manaud, Francois; Bassoullet, Philippe; Dreves, Luc; Le Hir, Pierre; L'Yavanc, Jacky; Prouzet, Patrick; Quintin, Jean-yves.
Tipo: Text
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00269/38070/36185.pdf

Résultats d'élevage de S. salar en Bretagne - Saison 1979-1980
Provedor de dados: 5
Autores: Gaignon, Jean-louis; Prouzet, Patrick.
Le saumon atlantique, S. salar, est une espèce de salmonidés relativement délicate à élever dans sa phase eau douce, et seuls les pisciculteurs ou organismes directement intéressés par l'aquaculture ou le repeuplement tentent depuis quelques années des essais d'élevage, tous très décevant en Bretagne jusqu'à présent. Lors des la saison 1979-1980, 5 élevages au total ont été, à notre connaissance, pratiqués en Bretagne. Parmi ces élevages, 3 ont été suivis durant toute la saison (production de smolts 1+ uniquement.
Tipo: Text
Palavras-chave: Aquaculture; Pisciculture; Saumon atlantique; Salmo salar; Elevage.
Ano: 1980
URL: http://archimer.ifremer.fr/doc/00143/25382/23520.pdf

Marquage magnétique des smolts d'origine Nive destinés à l'élevage en eau de mer
Provedor de dados: 5
Autores: Prouzet, Patrick; Martinet, Jean-pierre; Cuende, François - Xavier.
A la suite de la stabulation de géniteurs de la Nive à la station INRA de St Pée sur Nivelle (cf rapport Fécondité des saumons de plusieurs hivers de la Nive), 115000 oeufs embryonnés ont été produits. De ce lot ,ont été extraits 10000 oeufs qui ont été confiés à la coopérative AQUALANDES de manière à mettre en oeuvre une expérience de production de géniteurs en eau de mer à la Ferme Marine d'Anglet. Cette expérience est similaire à celle effectuée par IFREMER en Bretagne et qui est destinée à l'élevage de géniteurs en cages marines pour une production d'oeufs de souche Gaves-Nive.  Afin d'offrir le maximum de garanties sur l'origine des oeufs, il a été décidé, en accord avec les responsables d'Aqualandes, de marquer les juvéniles avant leur passage en mer...
Tipo: Text
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00069/18015/15543.pdf

La petite pêche en Aquitaine - le bassin d'Arcachon - Halieutique, socio-économie, usages et réglementations. 1999-2000
Provedor de dados: 5
Autores: Caill-milly, Nathalie; Leaute, Jean-pierre; Trouillet, Brice; Laborde, Jean-louis; Goumy, Cécilia; Prouzet, Patrick; Grandpierre, Alde; Lissardy, Muriel; Corlay, Jean-pierre.
Introduction : Intra-basin fishing is not grasped as well, partly because of a lack of distinction between pure professional fishing units and conchological units and on the other hand because of the large amount of ships. Poorly adapted codification of the equipment found in the basin is also contributing to this lack of information. Studies on the subject do exist, but the elements necessary to publish notices are not always gathered, this is leading to the proposal of a geographical systemic analysis on the basin. The steps that are being taken are complementing the development of the Geographical Information System already in place in the basin since 1993 through DEL at the Arcachon Ifremer as well as the PECOSUDE European study ¿ caractéristiques des...
Tipo: Text
Palavras-chave: Uses; Regulation; Economy; Halieutics; Basin of Arcachon; Fishing; Usages; Réglementation; Economie; Halieutique; Bassin d'Arcachon; Pêche.
Ano: 2001
URL: https://archimer.ifremer.fr/doc/2001/rapport-1660.pdf

Qualité des eaux de la rivière Elorn 1974-1977
Provedor de dados: 5
Autores: Prouzet, Patrick; Aminot, Alain.
Plusieurs études effectuées.par divers organismes (Fédération des Pêches,S.E.P.N.B., S.R.A.E.) ont eu pour but d'analyser les eaux de l'Elorn. Le présent travail actualise les connaissances déjà obtenues sur la qualitéhydrologique de l'Elorn. L'originalité de cette étude tient en la période detemps relativement importante pendant laquelle se sont déroulées les analyses. Cette étude se révèle, en outre, complémentaire des différentes étudesmenées en rade de Brest et en particulier des analyses hydrologiques effectuéesdans le cadre du Réseau National d'Observation. En effet, il s'avère intéressant de connaître la contribution del'Elorn (1) à l'enrichissement organique et à la pollution de la rade, site exceptionnelpour le développement de l'aquaculture en...
Tipo: Text
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00082/19290/16885.pdf

Analysis and visualization of the glass eel behavior (Anguilla anguilla) in the Adour estuary and estimate of its upstream migration speed
Provedor de dados: 5
Autores: Prouzet, Patrick; Odunlami, Marc; Duquesne, Elise; Boussouar, Ahmed.
The studies carried out on the Adour estuary on the migration of glass eels lead to the characterisation of their swimming behavior. Individuals migrate passively with the flood tide current behind the dynamic tide front, and their movements into the water column are linked to the surrounding luminosity and water turbidity. A numerical model was built from observations gathered on glass eel densities during scientific surveys. It uses the outputs of a hydrodynamic model accounting for the variations in the river flow and tide coefficient. It allows the simulation of the displacement of a particle in the longitudinal axis of the estuary. The variation of the vertical movements through the water column takes into account the cloud cover, the moon phases, the...
Tipo: Text
Palavras-chave: Numerical modeling; Fish behavior; Migration; Estuary; Hydrodynamics; Exploitation rate; Glass eel; Anguilla anguilla; Atlantic Ocean.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00000/11171/7531.pdf

Evaluation de la biomasse d'anchois (Engraulis encrasicolus) dans le golfe de Gascogne en 1994 - Campagne BIOMAN 94
Provedor de dados: 5
Autores: Motos, L.; Metuzals, K.; Uriarte, A.; Prouzet, Patrick.
De 1989 à 1992 dans le cadre d'un programme FAR financé en partie par l’Union Européenne, l'Institut Technique des Pêches et de l'Alimentation (AZTI), de San Sébastien, l'Institut Français de Recherchi: pour l'Exploitation de la Mer (IFREMER) et l'institut Espagnol d'océanographie (IEO), de Santander ont étudié l'abondance et les caractéristiques de la population d'anchois du golfe de Gascogne. Les résultats obtenus ont permis de montrer la répartition et le comportement de cette ressource, mais également la grande variabilité de son abondance qui a fluctué durant cette période d'étude entre 15 000 tonnes environ en 1989 et 100 000 tonnes en 1990. Cette évaluation, faute de moyens, a été arrêtée en 1993. Face a l'importance grandissante de cette ressource...
Tipo: Text
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00305/41576/40785.pdf

Caractérisation biologique et variation des captures de la grande alose (Alosa alosa) par unité d'effort sur le fleuve Adour (Pyrénées Atlantiques, France)
Provedor de dados: 5
Autores: Prouzet, Patrick; Martinet, Jean-pierre; Badia, Jacques.
The study of logbooks from commercial fishermen on the Adour River and commercial samples allowed characterization of the allis shad population (Alosa alosa L.) caught during the period 1988-91. A better knowledge of the influence of hydroclimatic factors (rate of river flow and intensity of tidal coefficient) on the catchability of the species in that never was also obtained. Allis shad are mainly recruited to this fishery from the beginning of April to the end of May: between 78 and 89 % depending on year. Males in the population were on average younger than females. However, at the same age, males were significantly smaller in size and in weight than females. These results reinforce the knowledge already obtained on French stocks in the Loire and...
Tipo: Text
Palavras-chave: Alosa alosa; Grande alose ou alose vraie; Clupéidés; Captures; Stock; Pêche; Âge; Débit fluvial; Courant de marée; Atlantique; Alosa alosa; Allis shad; Clupeidae; Catch; Fishing effort; Stock assessment; Age composition; Flow and tidal currents; Atlantic.
Ano: 1994
URL: http://archimer.ifremer.fr/doc/00188/29891/28336.pdf

Modèles loglinéaires pour l'étude des associations entre captures par unité d'effort et variables hydroclimatiques
Provedor de dados: 5
Autores: Badia, Jacques; Prouzet, Patrick.
In this paper we study associations between categorical variables. We present an approach based on loglinear modelling. A better knowledge of the influence of the intensity of tidal coefficient (cm) and of the rate of river flow (df) on catch per unit effort (cpue) of allis shad (Alosa alosa) was obtained. Analysis performed indicated that an increase of catch per unit effort is proportionally associated with the increase in the tidal coefficient. We also noted the influence of the rate of flow.
Tipo: Text
Palavras-chave: Modèle loglinéaire; Capture par unité d'effort; Variables environnementales; Alosa alosa; Grande alose ou alose vraie; Loglinear model; Catch per unit effort; Environmental variables; Alosa alosa; Allis shad.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00188/29889/28338.pdf

Rapport sur la pêche des marins pêcheurs dans l'estuaire de l'Adour en 1995
Provedor de dados: 5
Autores: Prouzet, Patrick; Martinet, Jean-pierre; Cuende, François - Xavier.
Situation géographique et caractéristiques de la zone prospectée par les professionnels maritimes. La zone de pêche étudiée se trouve dans la région du Bas-Adour (cf carte de situation). Elle est limitée en aval par la "barre de l'Adour" et en amont par le "bec du Gave" (confluence de l'Adour et des Gaves réunis) et la première pêcherie des Gaves Réunis. Cela représente une distance prospectée de 33 km. Cette portion de l'Adour est soumise à l'influence de la marée compte tenu de son absence d'élévation par rapport au niveau de la mer. La limite de salure des eaux fixée par le décret du 4 juillet 1853 se situe au pont d'Urt (château de Montpellier) à 22 km de la limite transversale de la mer. Ainsi, l'aire d'étude se situe à la fois en zone maritime et en...
Tipo: Text
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00070/18159/15716.pdf

Typologie des navires du quartier maritime de Bayonne en 1995. Rapport intermédiaire
Provedor de dados: 5
Autores: Caill-milly, Nathalie; Prouzet, Patrick.
La flottille du Quartier Maritime de Bayonne évolue avec la disponibilité de la ressource, le développement des techniques de pêche, la prospection de nouvelles zones et l'évolution des marchés porteurs. Devant ces changements rapides, il apparaît nécessaire de mettre à jour et de compléter les analyses effectuées pour l'année 1993 (CAILL, 1995). L'objectif de l'analyse typologique pour 1995 est de décrire le comportement actuel des unités de pêche en termes d'engins pratiqués, d'espèces cibles, de saisons de pêche et de zones exploitées. Ces éléments permettront, pour les flottilles maritimes et estuariennes (unités appartenant ou dirigées par un marin pêcheur professionnel) de mettre en évidence le degré de polyvalence des activités pratiquées, les zones...
Tipo: Text
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00073/18464/16015.pdf

Fluctuations des captures de civelles (Anguilla Anguilla L.) et analyse de la variation de leur capturabilité dans l'estuaire de l'Adour
Provedor de dados: 5
Autores: De Casamajor, Marie-noelle; Bru, N.; Prouzet, Patrick.
Analysis of glass eels catches from 1927 to 1998 in the Adour estuary showed different periods of successive decrease. Fishing periods between 1985 to 1993 were studied iwn order to observe impact of hydroclimatic conditions on the level of catch per unit of effort. This study took place in January when glass eels accessibility by the fishery was generally the highest. With hand and trawl netting that filtered the upper part of the water column, only individuals located close to the surface were accessible. Consequently, factors acting on the migration of glass eels in the water column have a great importance on the fishing success. Among environmental conditions, moon phase and temperature influence were determinant factors on catch variability but a lack...
Tipo: Text
Palavras-chave: Capturabilité; Civelle; Estuaire de l'Adour; Phase lunaire; Catchability; Glass eels; Migratory behaviour; Adour estuary.
Ano: 2001
URL: https://archimer.ifremer.fr/doc/00480/59145/61773.pdf

Etude de la production de juvéniles de saumon atlantique (Salmo salar) - 1 - Résultats de la saison 1979-1980 Pisciculture du Quinquis
Provedor de dados: 5
Autores: Gaignon, Jean-louis; Prouzet, Patrick.
La pisciculture du Quinquis, sise près de Landivisiau (29), a pour objet la production intensive de smolts de saumon atlantique (Salmo salar) dans le cadre d'un programme d'aménagement et de repeuplement de la rivière Elorn. Depuis sa mise en eau (1976) les résultats ont été décevants et ceci à cause, d'une part de difficultés de démarrage (problèmes alimentaires en autres), d'autre part de problèmes sanitaires : la furonculose ayant entrainé des mortalités importantes dès le 1er automne (alevins à bonne croissance) ou en fin d'hiver. Au total, la survie a toujours été très faible et la production de smolts négligeable. C'est pourquoi, à partir de la saison 79-80, les objectifs ont été tournés davantage vers l'expérimentation tout en conservant un objectif...
Tipo: Text
Palavras-chave: Saumon atlantique; Salmo salar; Elevage; Juvénile; Paramètres élevage; Données économiques; Pisciculture.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/00083/19420/17031.pdf

Larval history of glass eels, Anguilla anguilla, (Linne, 1758) in migration in coastal and estuarine areas (Adour, Bay of Biscay) as revealed by otolith structure.
Provedor de dados: 5
Autores: De Casamajor, Marie-noelle; Lecomte Finiger, Raymonde; Prouzet, Patrick.
The embryonic past of glass eels vas studied from the interpretation of microstructures registered on otoliths. The aim of this work is to put in evidence possible seasonal modifications of the growth of otoliths so that differences between otoliths of glass eels caught off marine and estuarine environment. So during the season 1999-2000, from November till March, otolith sampling was realised in the Southwestern part of France, in an estuarine and coastal zone. We observed a spatial and temporal evolution of proportions of the three various types of otoliths taken into account. Glass eels sampled at sea sometimes have a mark on their otoliths indicating the transition in the estuary, especially at the end of the fishing season. Measures of growth marks of...
Tipo: Text
Palavras-chave: Migration; Larval past; Golf of Biscay; Glass eels; Otolith; Migration; Passé larvaire; Golfe de Gascogne; Civelle; Otolithe.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-664.pdf

Point sommaire sur la biologie et les caractéristiques de la pêcherie de sardine Atlantique (Sardina pilchardus pilchardus) du golfe de Gascogne
Provedor de dados: 5
Autores: Prouzet, Patrick; Masse, Jacques.
Tipo: Text
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00304/41570/40778.pdf

Towards the implementation of an integrated approach to fisheries resources management in Ifremer, France Foreword
Provedor de dados: 5
Autores: Garcia, Serge M.; Prouzet, Patrick.
Implementing the Ecosystem Approach to Fisheries is a demanding exercise even though a more or less sophisticated approach might be adopted depending on the fishery or problem concerned and on the capacity available to deal with it. In France, DEMOSTEM, a programme of Ifremer was established to try to practically apply the EAF principles across the high diversity of situations existing in the country. The article summarizes very briefly the lessons learned through this programme implementation and some of the key findings and outcomes. In conclusion, it offers some perspectives on the whole process.
Tipo: Text
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00000/11162/7525.pdf

Programme de repeuplement - "Sea Rancing" en Salmonidés migrateurs - Production de juvéniles saison 80-81
Provedor de dados: 5
Autores: Gaignon, Jean-louis; Prouzet, Patrick.
Ce document a pour but de fournir l' ensemble des résultats et des observations recueillis au cours d 'une saison dans le cadre de programmes CNEXO . En effet, si certaines données sont obtenues grâce à des expériences originales et dans ce cas font ou feront l'objet de publications, d'autres constituent de simples notes ou essais qui peuvent représenter globalement une expérience susceptible de pouvoir aider à l'amélioration de techniques de production nécessaires au développement de l'activité Aquaculture - Repeuplement. Il a en outre la particularité de fournir des données sur des sujets dont l 'homogénéité n'apparaît peut - être pas évidente au lecteur élevage intensif de juvéniles. repeuplement, "Sea Ranching", gestion des stocks. Pourtant il n' y a...
Tipo: Text
Palavras-chave: Aquaculture; Salmo salar; Saumon atlantique; Production; Juvénile; Repeuplement; Gestion de stocks.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/00078/18902/16488.pdf

La peche maritime professionnelle dans l'estuaire de l'Adour en 2000. Importance economique et caracteristiques des captures de poissons migrateurs amphihalins.
Provedor de dados: 5
Autores: Prouzet, Patrick.
This technical report gives the characteristics of the estuarine professional fishing located in the lower course and at the mouth of Adour river during the fishing season 2000. The fishery statistics for all the migratory amphihaline species (excepted glass-eel) are recorded according to the calendar year. For the glass-eel landings, the statistics given are relative to the fishing season (November, 1, 1999-March, 31,2000). The 2000 fishing season is characterized by a medium level of landings around 50 metric tonnes, but a high turnover, the highest of the 1985-2000 series: 1.47 Meuros. An evaluation of the state of the main exploited species is given: Atlantic Salmon, Sea Trout, Allis Shad, Sea Lamprey and Eel (glass-eel and yellow eel). The catch...
Tipo: Text
Palavras-chave: Caractéristiques des captures et évolution des stocks; Anguille; Civelle; Lamproie marine; Grande alose; Truite de mer; Saumon atlantique; Espèce amphihaline; Statistique de pêche; Pêche professionnelle estuarienne; Catch characteristics and stock evolution; Yellow eel; Glass eels; Sea lamprey; Allis shad; Sea trout; Atlantic Salmon; Professional esturian fishing; Fish statistic; Amphihaline species.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/rapport-1577.pdf