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Registros recuperados: 6
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Campagnes expérimentales de chalutage en Manche orientale. Les campagnes C.G.F.S. 1997 & 1998 ArchiMer
Carpentier, Andre; Coppin, Franck.
lfremer carries out a yearly bottom trawl survey named Channel Ground Fish Survey (CGFS) in order to collect essential biological data on major exploited fish species in the Eastern Channel. These data are also provided to feed the indispensable historie series to the yearly assessment of resources. This report presents results of the CGFS surveys for 1997 and 1998, under two aspects: a multispecific approach of the biological assemblages and integrating an interannual analysis, then a monospecific analysis of 7 species of commercial interest, as whiting, pout, cod, red gurnard, plaice, black bream, red mullet. OCR NOT CONTROLLED
Tipo: Text Palavras-chave: Aspitrigla cuculus; Grondin rouge; Gadus morhua; Morue; Trisopterus luscus; Tacaud; Merlangius merlangus; Merlan; Multi espèces; Cartographie; Répartition; Abondance; Distribution; Manche orientale; Chalutage; Campagne; Plaice; Aspilngla cuculus; Red gurnard; Gadus morhua; Cod; Trisopterus luscus; Pout; Merlangius merlangus; Whiting; Multispecies; Cartography; Abundance; Distribution; Eastern Channel; Trawling; Survey.
Ano: 2000 URL: https://archimer.ifremer.fr/doc/2000/rapport-3606.pdf
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Campagnes expérimentales de chalutage en mer du Nord et Manche orientale. Volume II. Les campagnes C.G.F.S. 1997 & 1998 ArchiMer
Carpentier, André; Coppin, Franck.
Ifremer carries out a yearly bottom trawl survey named Channel Ground Fish Survey (CGFS) in order to collect essential biological data on major exploited fish species in the Eastern Channel. These data are also provided to feed the indispensable historic series to the yearly assessment of resources. This report presents results of the CGFS surveys for 1997 and 1998, under two aspects : a multispecific approach of the biological assemblages and integrating an interannual analysis, then a monospecific analysis of 7 species of commercial interest, as whiting, pout, cod, red gurnard, plaice, black bream, red mullet.
Tipo: Text Palavras-chave: Campagne; Chalutage; Manche orientale; Distribution; Abondance; Répartition; Cartographie; Multiespèces; Merlan; Merlangius merlangus; Tacaud; Trisopterus luscus; Morue; Gadus morhua; Grondin rouge; Aspitrigla cuculus; Plie; Pleuronectes platessa; Griset; Spondyliosoma cantharus; Survey; Trawling; Eastern Channel; Distribution; Abundance; Cartography; Multi-species; Whiting; Merlangius merlangus; Pout; Trisopterus luscus; Cod; Gadus morhua; Red gurnard; Aspitrigla cuculus; Plaice; Pleuronectesplatessa; Black bream; Spondyliosoma cantharus; Red mullet.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00306/41762/40975.pdf
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Compréhension des différences de distribution spatiale des anchois et de leurs œufs ArchiMer
Godet, Claire.
La campagne PELGAS participe à la gestion du stock d’anchois du Golfe de Gascogne, en réalisant une évaluation directe à la mer de la biomasse d’anchois. Pour déterminer la biomasse totale, des appareils acoustiques envoyant des ultra-sons dans l’eau pour détecter les bancs de poisson sont utilisés. Ensuite des pêches sont effectuées sur les zones détectées pour déterminer la composition des bancs (espèces, poids, longueurs…). En parallèle, les oeufs d’anchois sont comptés. A partir des données récoltées de 2000 à 2015, j’ai pu réaliser des cartes de distribution spatiale des anchois et de leurs oeufs, ainsi que des analyses statistiques afin de comprendre les différences de distribution entre les deux. Il s’avère que les oeufs sont plus au large que les...
Tipo: Text Palavras-chave: Anchois; Fécondité; Répartition; Golfe de Gascogne; Oeufs.; Anchovies; Fecundity; Repartition; Bay of Biscay; Eggs..
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00342/45335/44797.pdf
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Droits à produire transférables : Le marché des concessions conchylicoles et ses effets non désirés ArchiMer
Mongruel, Remi; Perez Agundez, José A.; Girard, Sophie.
This paper sets out an historical analysis of the rights-based system applied to the French shellfish-farming sector and a study of the current operating way of this system. It addresses the issue of the distribution of production means within an industry whose two main characteristics are the familial exploitation model and the specific social objectives like jobs creation in some coastal areas. The shellfish farming rights-based system has evolved toward a transferable production-rights system. However, the spontaneous emergence of a market for production-rights in the context of a weak administrative intervention is likely to generate unintended effects, whose occurrence is tested using quantitative and qualitative data. The final discussion searches...
Tipo: Text Palavras-chave: Market regulation; Distribution; Rights to produce; Shellfish farming; Land; Encadrement du marché; Répartition; Droits à produire; Conchyliculture; Foncier.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4611.pdf
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Evolution annuelle du phytoplancton dans le Pertuis Breton - Charente-Maritime ArchiMer
Barille, Anne-laure.
Afin d'améliorer les gestion des bassins conchylicoles, de nombreux auteurs ont élaboré des modèles mathématiques simulant les activités physiques et biologiques des bassins étudiés (Bacher et al.. 1990, bassin de Marennes-Oléron ; Bioteau, 1993, étang de Thau ; Chapelle, 1993, Baie de la Vilaine ; Radford. 1993, mer du Nord ; Smaal et Scholten, 1989, bassins mytilicoles hollandais; Santhanam et al., 1990, sud-est de l'Inde ; Keizer et al., 1987, bassin de Cumberland). Un des problèmes majeurs qui se pose au modélisateur est l'estimation de la capacité trophique d'un bassin. Quel facteur est le plus représentatif de la nourriture disponible pour les mollusques filtreurs ? Widdows et al. (1979) caractérisent le potentiel nutritif disponible pour les...
Tipo: Text Palavras-chave: Phytoplancton; Variations annuelles; Facteurs climatiques; Répartition; Marennes Oléron; Pertuis Breton.
Ano: 1994 URL: http://archimer.ifremer.fr/doc/00078/18905/16491.pdf
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Origine et état de la population de Crepidula fornicata (Gastropoda Prosobranchia) sur le littoral français ArchiMer
Blanchard, Michel.
The introduction of the limpet Crepidula fornicata on French coasts occurred through a number of stages of unequal amplitude. The two main stages are the result of a) its transportation on the hulls of the Allies ships during WWII, and b) the voluntary introduction of the Japanese oyster Crassostrea gigas in the 1970s. A recent assessment of its distribution shows that it can be found from the North Sea to the Mediterranean shores, resulting in some conflicts, due to its high density.
Tipo: Text Palavras-chave: Littoral français; Répartition; Introduction; Crepidula fornicata.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/1995/publication-6191.PDF
Registros recuperados: 6
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