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Analyse prospective jusqu'en 2025 de la demande en recherche des pays du sud dans le domaine des "ressources vivantes" - Rapport final 5
Blancheton, Jean-paul; Fuchs, Jacques; Lacroix, Denis; Lacroix, Nicole; Lemercier, Philippe; Marin, Jean; Antoine, Loic.
L'accélération des changements dans tous les domaines, qu'il s'agisse d'environnement, de technologies ou de la vie des sociétés humaines, est une donnée majeure de notre temps. Jusqu'au XIXe siècle, les hommes gardaient une relative maîtrise des révolutions, qu'elles soient techniques (la vapeur, l'électricité, l'atome, ... ) ou sociales (la démocratie, le communisme, etc). A la fin du XXe siècle, la complexité des sociétés humaines, le foisonnement des découvertes scientifiques rapidement exploitées par l'industrie à des fins économiques et l'interdépendance croissante de toutes les activités dans des écosystèmes fragilisés ont conduit les communautés humaines à davantage subir les révolutions: mondialisation d'une économie de plus en plus immatérielle,...
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Ano: 2002 URL: http://archimer.ifremer.fr/doc/00304/41528/40736.pdf
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Aquaculture et pêche dans les pays du Sud : analyse prospective 2025 de la demande en recherche 5
Blancheton, Jean-paul; Fuchs, Jacques; Lacroix, Denis; Lacroix, Nicole; Lemercier, Philippe; Marin, Jean; Antoine, Loic.
This document presents four years of work by an Ifremer's prospective group on the research demand in the fields of fisheries and aquaculture in southern countries by 2025. The study focused on a retrospective assessment of the scientific cooperations conducted by the Institute with southern countries over the past twenty-five years. It was followed by a classic prospective ana/ysis based on the method of scenarios, comp/eted bya research on a wide range of published documents. The analysis identified the most Frequent research demands in five geographic areas of the southern hemisphere. The relevant research themes where Ifremer should intervene as weil as geographic priorities were a/so defined. Two practical conclusions were formulated: on the one hand,...
Tipo: Text Palavras-chave: Southern countries; Fisheries; Aquaculture; Research demand; Prospective analysis; Pays du Sud; Halieutique; Aquaculture; Demande en recherche; Prospective.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/rapport-4314.pdf
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Croissance, condition et mortalite des huitres du Belon 5
Marin, Jean.
Growth rate, condition and mortalities in groups of oysters in oyster-beds in the Belon River were studied during 1968 and 1969. The growth rate up to the beginning of the summer was higher in 1969 than in 1968. Variations in the condition of the oysters during the 2 summers were related to the state of development of the reproductive organs and this sexual development was earlier in 1969 than in 1968 because of a sudden rapid rise in temp. Whereas relatively mortalities occurred during 1968, many oyster beds in the River Belon were decimated during 1969. The phenomenon responsible for these mortalities apparently occurred at a particularly critical time; when the oysters were growing rapidly and when most of them were at an advanced stage in the sexual...
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Ano: 1971 URL: http://archimer.ifremer.fr/doc/1971/publication-2377.pdf
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Etude bathymetrique et sedimentologique des etangs de Diane et d'Urbino en Corse. 5
Longere, Paul; Dorel, Didier; Marin, Jean.
2 ponds (or lagoon) were studied in order to establish the economic possibilities of their exploitation for oysters. Bathymetric and sediment maps were produced using methods described. They indicate a morphological similarity between the ponds, with a superficial broken bed and a regular, flat or gently sloping bed beyond 7 m, the general form reflecting the aerial relief of the adjacent `coast'. The deeper regions had mud or clay sediment, while the edges of the ponds were covered with sand. In more detailed studies it was evident that the banks of Diane were more regular and steep than those of Urbino, and that only in the latter was there a good relationship between the depth of water and the carbon/nitrogen ratio. Differences are thought to relate to...
Tipo: Text Palavras-chave: Corsica; Studies; Exploitation; Oysters; Sedimentologic; Bathymetric.
Ano: 1972 URL: http://archimer.ifremer.fr/doc/1972/publication-2068.pdf
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Etude de la croissance des crustacés à partir des données de marquages - recaptures. Application à la langouste rouge de Corse, Palinurus elephas Fabricius 5
Marin, Jean.
Deux modèles de croissance de P. elephas ont été utilisés : modèle linéaire de Kurata (1962) pour la croissance relative, et modèle de Van Bertalanffy pour la croissance absolue. La fréquence de mue et la durée de l'intermue ont été déterminées en combinant la relation taille-age de Von Bertalanffy et l'équation de croissance à la mue de Kurata. Une analyse crtitique de l'adéquation du modèle de Von Bertalanffy est proposée.  
Tipo: Text
Ano: 1985 URL: https://archimer.ifremer.fr/doc/00500/61165/64633.pdf
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Etude physico-chimique de l'estuaire du Belon 5
Marin, Jean.
The Belon oyster farming centre, despite its economic interest, has, up to now, only been the subject of periodic investigation. In 1923, HINARD took on the study of oyster farm beds in order to compare them with those of another well-known area, Marennes. Later, within the framework of oyster larvae research, VOISIN (1932), TACLET (1935) and HERMAN (1935 to 1938) engaged in a few observations there on temperatures and densities during the months of June and July, the flat oyster's breeding period. In 1946-1947, in brief, MARTEIL started a comparative study of the Aven and the Belon, the results of which were not published. The recurrence of the phenomena of summer mortality rates, since 1961, made it necessary to acquire more knowledge of the estuary. Our...
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Ano: 1971 URL: http://archimer.ifremer.fr/doc/1971/publication-2375.pdf
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Exploitation, biologie et dynamique du stock de langouste rouge de Corse, Palinurus elephas Fabricius 5
Marin, Jean.
The European red spiny lobster (Palinurus elephas) is the main target species of the small-scale fishery in Corsica. This fishery was described, its trends from 1981 to 1964 were analysed, and the exploitation conditions of the spiny lobster stock (fishing grounds, strategy and gear ; fishing regulations) were explained. Furthermore, the fishing effort and the yields were estimated through an indirect survey, in 1983 and 1984 . The growth was studied through tagging experiments. Growth increment per moult, Von BERTALANFFY's equation parameters, and moulting frequency were estimated for both sexes. Bias risks associated to tag loss at moulting were also analysed. In addition, estimates of K and L∞ variances were provided through "Jack-knife"...
Tipo: Text Palavras-chave: Palinurus elephas; Fishery biology; Population dynamics; Fecundity; Recruitment; Sexual maturity; Growth; Stock assessment; Sensibilité; Fécondité par recrue; Rendement par recrue; Analyse des cohortes; Maturité sexuelle; Croissance; Pêcherie; Langouste.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/1987/these-1036.pdf
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La pecherie de langouste rouge en Corse 5
Marin, Jean.
The european red spiny lobster, Palinurus elephas, is the main target species of the small-scale fishery in Corsica. The fishery is described fleet, fishing areas, fishing strategy and fishing gear ; fishing effort, yield, c.p.u.e, and complementary.catches ; resource condition. Its specific problem, the economic overfishing, is analysed. Finally, it has been tried to assess the fishing regulation impact (minimum market size, fishing seasonal close, fishing sanctuaries).
Tipo: Text Palavras-chave: Small scale fishery; Corsica; Spiny lobster; Fishery; Petit métier; Corse; Langouste; Pecherie.
Ano: 1988 URL: http://archimer.ifremer.fr/doc/1988/rapport-1538.pdf
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