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Registros recuperados: 28
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A note on environmental aspects of penaeid shrimp biology and dynamics IRD
Garcia, Serge.
Shrimps are short-lived animals living in highly variable inshore areas during the juvenile phase and are therefore subject to particularly strong environmentally driven variability in recruitment and stock size. This paper examines the likely consequences of this fact on the surplus yield production and stock-recruitment modelling underlining the high risk of generating artefactual models when the data series are short. (Résumé d'auteur)
Tipo: Text Palavras-chave: CREVETTE; STOCK; CROISSANCE; CORRELATION STATISTIQUE; RELATION PECHE ENVIRONNEMENT; MODELE DE PRODUCTION.
Ano: 1984 URL: http://www.documentation.ird.fr/hor/fdi:39770
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Activité bactérienne dans l'upwelling mauritanien : relation avec l'oxygène et la matière organique IRD
Herbland, Alain.
Tipo: Text Palavras-chave: ACTIVITE BIOLOGIQUE; BACTERIE; ANALYSE QUANTITATIVE; ASSIMILATION; RESPIRATION; RENDEMENT; VARIATION SPATIALE; OXYGENE DISSOUS; MATIERE ORGANIQUE DISSOUTE; MATIERE ORGANIQUE PARTICULEE; PHOSPHORE ORGANIQUE; CORRELATION STATISTIQUE.
Ano: 1974 URL: http://www.documentation.ird.fr/hor/fdi:07406
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Analyse des rendements des chalutiers ivoiriens : définition d'un effort de pêche IRD
Fonteneau, Alain; Bouillon, Pierre.
Tipo: Text Palavras-chave: CHALUTIER; RENDEMENT; EFFORT DE PECHE; PUISSANCE DE PECHE; CORRELATION STATISTIQUE; ZONE DE PECHE.
Ano: 1971 URL: http://www.documentation.ird.fr/hor/fdi:32161
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Can host body size explain the parasite species richness in tropical freshwater fishes ? IRD
Guégan, Jean-François; Lambert, A.; Levêque, Christian; Combes, C.; Euzet, L..
The variability of monogenean gill ectoparasite species richness in 19 West African cyprinid species was analyzed using the following seven predictor variables : host size, number of drainage basins, number of sympatric cyprinid species, host diversity, association with mainland forest, host ecology, and monogenean biological labelling. The size of the host species accounted for 77% of the variation in the number of parasite species per host, and host ecology and additional 8%. Together the effects of host size and host ecology accounted for 85% of the variation in monogenean species richness. This study shows that the deciding factors for explaining monogenean species richness in West African cyprinid fishes are host species size and host ecology. These...
Tipo: Text Palavras-chave: ECTOPARASITE; POISSON D'EAU DOUCE; RELATION HOTE PARASITE; ENVIRONNEMENT; ANALYSE QUANTITATIVE; CORRELATION STATISTIQUE; MONOGENE; TAILLE.
Ano: 1992 URL: http://www.documentation.ird.fr/hor/fdi:40058
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Climatic teleconnections in the Western South Pacific with El Nino phenomenon IRD
Donguy, Jean-René; Hénin, Christian.
Tipo: Text Palavras-chave: OCEANOGRAPHIE PHYSIQUE; HYDROCLIMAT; EL NINO; CORRELATION STATISTIQUE.
Ano: 1980 URL: http://www.documentation.ird.fr/hor/fdi:00419
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Etude de la respiration et de l'excrétion d'azote et de phosphore des populations zooplanctoniques de l'upwelling mauritanien (mars-avril, 1972) IRD
Le Borgne, Robert.
Tipo: Text Palavras-chave: ZOOPLANCTON; RESPIRATION; EXCRETION; AZOTE; PHOSPHORE; UPWELLING; CORRELATION STATISTIQUE; RAPPORT NP.
Ano: 1973 URL: http://www.documentation.ird.fr/hor/fdi:06133
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Evaluation des ressources en poissons du lagon d'Ouvéa : 3ème partie. Les poissons IRD
Kulbicki, Michel; Barbigant, Georges; Menou, Jean-Louis; Mou-Tham, Gérard; Thollot, Pierre; Wantiez, Laurent; William, J..
L'évaluation des ressources en poissons de l'atoll d'Ouvéa comprend 5 parties : l'inventaire des espèces, l'évaluation des stocks pour l'ensemble des espèces avec détail pour les espèces importantes, l'analyse des structures de taille, structures trophiques et structures démographiques, les relations poissons-milieu, l'évaluation du potentiel halieutique et les recommandations pour la gestion de la pêche. L'échantillonnage s'est déroulé sur un total de 11 semaines réparties en 6 campagnes et comprend 3 types d'échantillonnage : les pêches expérimentales, les comptages en plongée sur les fonds de lagon, les comptages en plongée sur les récifs. Après des essais infructueux de pêche à la palangre de fond (26 poses), les poissons de ligne ont été...
Tipo: Text Palavras-chave: LAGON; FAUNE ICHTYOLOGIQUE; INVENTAIRE FAUNISTIQUE; STRUCTURE DU PEUPLEMENT; ESTIMATION DE STOCK; STRUCTURE TROPHIQUE; STRUCTURE DE POPULATION; CORRELATION STATISTIQUE; GESTION DES PECHES; RELATION ESPECE ENVIRONNEMENT.
Ano: 1994 URL: http://www.documentation.ird.fr/hor/fdi:43817
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Evidence for an age-dependent pyrogenic threshold of Plasmodium falciparum parasitemia in highly endemic populations IRD
Rogier, C.; Commenges, D.; Trape, Jean-François.
The high prevalence of asymptomatic malaria infections and the nonspecific signs and symptoms of the disease make the individual diagnosis of clinical malaria uncertain in highly endemic areas. Longitudinal data obtained during a four-month period from a daily survey of 200 permanent inhabitants (one month-83 years old) living in a holoendemic area were analyzed in a random-effects logistic regression model to investigate the relationship between the level of #Plasmodium falciparum$ parasitemia and risk of fever. It was not possible to build a model that described/summarized correctly this relationship by a continuous function. Findings provide evidence for an age-dependent threshold effect of parasitemia on the occurrence of fever. The level of this...
Tipo: Text Palavras-chave: PALUDISME; AGENT PATHOGENE; DIAGNOSTIC; ENDEMIE; EPIDEMIOLOGIE; CORRELATION STATISTIQUE; DENSITE; PARASITEMIE; FIEVRE.
Ano: 1996 URL: http://www.documentation.ird.fr/hor/fdi:010007700
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Evolution de la composition des peuplements de poissons IRD
Quensière, Jacques; Bénech, Vincent; Dansoko, D..
Tipo: Text Palavras-chave: MILIEU DELTAIQUE; SECHERESSE; PRODUCTION HALIEUTIQUE; COMMERCIALISATION; DONNEES STATISTIQUES; CORRELATION STATISTIQUE; POISSON; ABONDANCE; RELATION ESPECE ENVIRONNEMENT.
Ano: 1994 URL: http://www.documentation.ird.fr/hor/fdi:40727
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Influence of duration of incubation on zooplankton respiration and excretion results IRD
Le Borgne, Robert.
Tipo: Text Palavras-chave: ZOOPLANCTON; RESPIRATION; EXCRETION; AMMONIUM; AZOTE; PHOSPHORE; ANALYSE QUANTITATIVE; VARIATION TEMPORELLE; CORRELATION STATISTIQUE; DUREE D'INCUBATION.
Ano: 1979 URL: http://www.documentation.ird.fr/hor/fdi:09663
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Maximum local helminth parasite community richness in British freshwater fish : a test of the colonization time hypothesis IRD
Guégan, Jean-François; Kennedy, C.R..
The investigation of Price & Clancy (1983), which demonstrated a significant positive correlation between total helminth species number per host species and geographical range of freshwater fish host species in Britain, was re-examined using a different measure of parasite species richness. Re-calculation of the two parameters after controlling for the effect of the composition of the list of fish by excluding, on biological and distributional grounds, 2 species of agnathans and 7 species of introduced teleosts, and for the effect of sampling effort by using helminth richness in the richest component community of each fish species rather than check-list data, reveals no significant relationship between helminth species richness than the accumulation of...
Tipo: Text Palavras-chave: ECTOPARASITE; ANALYSE QUANTITATIVE; POISSON D'EAU DOUCE; REPARTITION GEOGRAPHIQUE; RELATION HOTE PARASITE; CORRELATION STATISTIQUE; PLATHELMINTHE.
Ano: 1993 URL: http://www.documentation.ird.fr/hor/fdi:40063
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Maximum observed length as an indicator growth rate in tropical fishes IRD
Legendre, Marc; Albaret, Jean-Jacques.
A positive linear relationship between maximum observed length (MOL) and growth rate is shown for 69 marine, fresh- or brackishwater African fish species in the natural environment and for six cultured species. When accurate data on growth are missing, the MOL appears to be one of the most useful criteria for the preselection of candidate fish species for aquaculture. (Résumé d'auteur)
Tipo: Text Palavras-chave: POISSON; ESPECE TROPICALE; CROISSANCE; MILIEU NATUREL; MILIEU ARTIFICIEL; CORRELATION STATISTIQUE; ANALYSE QUALITATIVE; SELECTION; AQUACULTURE.
Ano: 1991 URL: http://www.documentation.ird.fr/hor/fdi:40995
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Measuring change in nutritional status : a comparison of different anthropometric indices and the sample sizes required IRD
Briend, André; Hasan, K.Z.; Aziz, K.M.A.; Hoque, B.A.; Henry, F.J..
Tipo: Text Palavras-chave: ETAT NUTRITIONNEL; SURVEILLANCE NUTRITIONNELLE; ANTHROPOMETRIE NUTRITIONNELLE; ECHANTILLONNAGE; CORRELATION STATISTIQUE; ANALYSE DE DONNEES.
Ano: 1989 URL: http://www.documentation.ird.fr/hor/fdi:30635
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Note pour servir à la connaissance de Symplectoteuthis oualaniensis (Lesson 1830) (Cephalopoda, Oegopsida) : variations ontogéniques du bec supérieur IRD
Rancurel, Paul.
Tipo: Text Palavras-chave: ANATOMIE ANIMALE; VARIATION; MALE; FEMELLE; MATURITE SEXUELLE; BIOMETRIE; CORRELATION STATISTIQUE; BEC; MOLLUSCA; CEPHALOPODA; DEGOPSIDA; SYMPLECTOTEUTHIS OUALANIENSIS.
Ano: 1980 URL: http://www.documentation.ird.fr/hor/fdi:16162
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Oxygène, phosphate et gaz carbonique total en mer de Corail IRD
Rotschi, Henri.
Tipo: Text Palavras-chave: OCEANOGRAPHIE PHYSIQUE; ANALYSE CHIMIQUE; OXYGENE DISSOUS; PHOSPHATE; GAZ CARBONIQUE; CORRELATION STATISTIQUE; COEFFICIENT DE CORRELATION; VARIATION SPATIALE; ACTIVITE BIOLOGIQUE.
Ano: 1962 URL: http://www.documentation.ird.fr/hor/fdi:11571
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Pluviométrie et captures des crevettes Penaeus notialis dans l'estuaire de la Casamance (Sénégal) entre 1962 et 1984 IRD
Le Reste, Louis.
Les variations mensuelles de captures de crevettes #Penaeus notialis$ (Perez Farfante, 1967) entre 1962 et 1984, dans l'estuaire de la Casamance, ont été étudiées. Les salinités extrêmes de 0,8 et 69 °/oo ont été enregistrées durant cette période. Les crevettes sont pêchées pendant leur migration de retour vers la mer, à l'aide de filets à maille de 12-14 mm de côté, fixés de part et d'autre de pirogues ancrées. Les données de salinité étant rares, une corrélation a été recherchée entre la salinité et la pluviométrie de manière à pouvoir utiliser les données de pluviométrie disponibles pour chaque année. Il y a deux maxima de captures pendant l'année. Lorsque la pluviométrie est importante (1,25 - 1,50 m) ils sont observés en milieu d'année, quand la...
Tipo: Text Palavras-chave: ESTUAIRE; PECHE DE CRUSTACES; CREVETTE; ABONDANCE; VARIATION MENSUELLE; VARIATION ANNUELLE; SALINITE; PLUIE; CORRELATION STATISTIQUE; RELATION ESPECE ENVIRONNEMENT.
Ano: 1992 URL: http://www.documentation.ird.fr/hor/fdi:37904
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Pour une connaissance des conditions de mise en oeuvre des aménagements du ruissellement IRD
Serpantié, Georges; Lamachère, Jean-Marie.
Tipo: Text Palavras-chave: AMENAGEMENT DES EAUX; RUISSELLEMENT; PARCELLE DE CULTURE; SURFACE DU SOL; PLUIE; CORRELATION STATISTIQUE; BILAN HYDRIQUE; ETUDE EXPERIMENTALE.
Ano: 1989 URL: http://www.documentation.ird.fr/hor/fdi:30484
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Relations entre le rapport P/B et la longévité des organismes IRD
Lévêque, Christian; Durand, Jean-René; Ecoutin, Jean-Marc.
Tipo: Text Palavras-chave: DYNAMIQUE DE POPULATION; MODELE MATHEMATIQUE; RAPPORT DE PRODUCTION; BIOMASSE; AGE PHYSIOLOGIQUE; CORRELATION STATISTIQUE; APPLICATION; POPULATION ANIMALE.
Ano: 1977 URL: http://www.documentation.ird.fr/hor/fdi:18230
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Relationships between the hydrological structure, chlorophyll and zooplankton biomasses in the Gulf of Guinea IRD
Le Borgne, Robert.
Tipo: Text Palavras-chave: CHLOROPHYLLE; ZOOPLANCTON; BIOMASSE; TEMPERATURE; OXYGENE DISSOUS; NITRATE; CORRELATION STATISTIQUE; REPARTITION VERTICALE; STRUCTURE HYDROLOGIQUE.
Ano: 1981 URL: http://www.documentation.ird.fr/hor/fdi:01059
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Remarques sur la relation entre l'oxygène et le phosphore minéral dissous en mer de Corail IRD
Rotschi, Henri.
Tipo: Text Palavras-chave: OCEANOGRAPHIE; COEFFICIENT DE CORRELATION; CORRELATION STATISTIQUE; OXYGENE DISSOUS; PHOSPHORE; MATIERE ORGANIQUE DISSOUTE; VARIATION SAISONNIERE.
Ano: 1960 URL: http://www.documentation.ird.fr/hor/fdi:11566
Registros recuperados: 28
Primeira ... 12 ... Última
 

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