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Analyse des flottilles du sud du golfe de Gascogne, de 1986 à 2002 – De Noirmoutier à Bayonne. Description et évolution des composantes de pêche ArchiMer
Leaute, Jean-pierre.
This document presents a comparative assessment of six triennal analysis carried out between 1986 and 2002, on 1300 boats, on average, from the 35 ports of Southern Bay of Biscay fishing fleets (from Loire river to Spanish border). Fisheries statistics allow the identification of different fishing practices and fishing boats associated with them within the fleets. In order to allow comparison and analysis of the evolution that has taken place during the study period, the same variables (gears used, landed species) and multivariate analysis procedures have been used to produce groupings of vessels. Over the period, 11 components, on average, have been identified, grouped in two entities, mobile and fixed gears. If the discriminative characteristics...
Tipo: Text Palavras-chave: Typologie; Flottilles de pêche; Composantes; Golfe de Gascogne; Analyse multivariée; Typology; Fishing fleet; Components; Bay of Biscay; Multivariate analysis.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/00001/11234/7756.pdf
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Evaluation, scénarios et viabilité écologique et économique des pêcheries côtières tropicales : application au cas de la Guyane Française ArchiMer
Cisse, Abdoul.
The need for an integrated approach to fisheries is now widely affirmed, including the FAO, in particular in the context of tropical artisanal fisheries. These small-scale fisheries, often multispecies are very important in terms of production, employment and food security. However these fisheries and the exploited resources are often characterized by a lack of data making difficult their management within an ecosystem approach, and by the ecological and economic system complexities including trophic and technological interactions. This thesis aims to contribute to the development of bioeconomic tools for small tropical fisheries in a sustainable management perspective based on the ecosystem approach. In this perspective, the French Guiana coastal fishery...
Tipo: Text Palavras-chave: Pêcherie tropicale à petite échelle; Multi-flottilles; Multispécifique; Approche ecosystémique; Analyse multivariée; Intéractions trophiques; Modélisation bioéconomique; Indicateurs bioéconomiques; Analyse de viabilité; Stochasticité; Théorie des jeux.; Tropical small-scale fishery; Multi-fleet; Multi-species; Ecosystem approach; Multivariate analysis; Trophic interactions; Bioeconomic modeling; Bio-indicators; Sustainability analysis; Stochasticity; Game theory.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00144/25492/23646.pdf
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Induced spawning of red drum, Sciaenops ocellatus: use of multivariate and univariate analysis methods in the search for side effects of LH-RHa treatments and ovarian development state upon spawn quality ArchiMer
Gardes, Lionel; Villanove, Philippe; Buchet, Vincent; Fauvel, Christian.
The present work examines the usefulness of the combination of multivariate analyses and further one-way analysis of variance in the search for links between causes and effects in heterologous stimulation of spawning in fish. Stimulations with both 20 and 50 mu g . kg(-1) doses of [D Trp(6)] luteinizing hormone-releasing hormone analogue (LH-RHa) were effective in inducing and synchronizing spawning of red drum, Sciaenops ocellatus. Oocyte development monitoring using ovarian biopsy allowed treatment injections at different stages of maturation. The influence at stimulation time of female oocyte development state upon further development was shown. An interesting potential of second stimulation, leading to high quality spawns, was established and factors...
Tipo: Text Palavras-chave: Pisciculture; Induction de la ponte; LH-RH analogues; Analyse multivariée; Qualité des oeufs; Développement ovocytaire; Ombrine; Sciaenops ocellatus; Fish culture; Induced breeding; LH-RH analogues; Multivariate analysis; Egg quality; Oocyte development; Red drum; Sciaenops ocellatus.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00187/29875/28361.pdf
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Typologie de la flottille chalutière du port de Sète par une méthode de segmentation ArchiMer
Taquet, Marc; Gaertner, Jean-claude; Bertrand, Jacques.
This work aims to define a typology of trawler f1eet in Sète, the main fishing harbour along the French Mediterranean coast, using several multivariate analysis methods. The fishing ships taken to account are represented by annual profiles of landing specific compositions. Five fishing strategies have been identified. A segmentation method using symbolic objects allows a formaI characterisation of the different strategies. These strategies are studied according to several general characteristics usually used for management rules elaboration (power, length, ship age). The typological analysis allows to characterise two main exploitation ways, one directed to the catch of a few species (Engraulis encrasicolus, Sardina pilchardus), the other characterised by...
Tipo: Text Palavras-chave: Flotille; Stratégie; Chalutage; Analyse multivariée; Méditerranée; Fleet; Strategy; Fish trawling; Multivariate analysis; Mediterranean sea.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00113/22404/20101.pdf
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Typologie de l'activité de Pêche en Guadeloupe ArchiMer
Maguer, Cedric; Reynal, Lionel; Taquet, Marc.
This work aims to describe fishing activity in Guadeloupe through a typology. The samply unit y is the landing represented by a profile of specific composition. Using multivariate analysis methods allows to synthesize this fishing multi specises and multi fishing tackles. Principal Component Analysis and classification regroup landings. Then, segmentation method separateses classes by species composition. Typology is obtained by association of classes and tackles. The contraist between landings of reef fishes realized with traps and those which search for pelagics is clearly shown. Landings of queen conch and landings without fishes are separated in two classes.
Tipo: Text Palavras-chave: Typologie; Guadeloupe; Analyse multivariée; Typology; Guadeloupe; Multivariate analysis.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00113/22408/20105.pdf
Registros recuperados: 5
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