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| Registros recuperados: 26.605 | |
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| Verron, Jacques; Bonnefond, Pascal; Aouf, Lofti; Birol, Florence; Bhowmick, Suchandra A.; Calmant, Stephane; Conchy, Taina; Cretaux, Jean-francois; Dibarboure, Gerald; Dubey, A. K.; Faugere, Yannice; Guerreiro, Kevin; Gupta, P. K.; Hamon, Mathieu; Jebri, Fatma; Kumar, Raj; Morrow, Rosemary; Pascual, Ananda; Pujol, Marie-isabelle; Remy, Elisabeth; Remy, Frederique; Smith, Walter H. F.; Tournadre, Jean; Vergara, Oscar. |
| The India-France SARAL/AltiKa mission is the first Ka-band altimetric mission dedicated primarily to oceanography. The mission objectives were firstly the observation of the oceanic mesoscales but also global and regional sea level monitoring, including the coastal zone, data assimilation, and operational oceanography. SARAL/AltiKa proved also to be a great opportunity for inland waters applications, for observing ice sheet or icebergs, as well as for geodetic investigations. The mission ended its nominal phase after three years in orbit and began a new phase (drifting orbit) in July 2016. The objective of this paper is to highlight some of the most remarkable achievements of the SARAL/AltiKa mission in terms of scientific applications. Compared to the... |
| Tipo: Text |
Palavras-chave: Altimetry; Ka-band; Oceanography; Hydrology; Ice; Geodesy. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00600/71248/69623.pdf |
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| Dhurmeea, Zahirah; Zudaire, Iker; Chassot, Emmanuel; Cedras, Maria; Nikolic, Natacha; Bourjea, Jerome; West, Wendy; Appadoo, Chandani; Bodin, Nathalie. |
| The reproductive biology of albacore tuna, Thunnus alalunga, in the western Indian Ocean was examined through analysis of the sex ratio, spawning season, length-at-maturity (L50), spawning frequency and fecundity. From 2013 to 2015, a total of 923 female and 867 male albacore were sampled. A bias in sex ratio was found in favor of females with fork length (LF) < 100 cm. Using histological analyses and gonadosomatic index, spawning was found to occur between 10°S and 30°S, mainly to the east of Madagascar from October to January. Large females contributed more to reproduction through their longer spawning period compared to small individuals. The L50 (mean ± standard error) of female albacore was estimated at 85.3 ± 0.7 cm LF. Albacore spawn on average... |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00362/47284/47261.pdf |
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| Collignon, J; Dorer, G; Jacques, F. |
| La distribution des produits de la pêche connaît depuis plusieurs années une importante évolution dans la présentation des denrées offertes au consommateur : le pourcentage des poissons présentés sous une forme élaborée connaît une progression constante. Nous espérons que les agents de contrôle, les professionnels à tous les stades de la commercialisation, les responsables des collectivités publiques et privées ainsi que les consommateurs tireront profit de cet ouvrage consacré à l'identification des espèces commercialisées sous forme de filets et de tranches se prêtant, beaucoup plus que les poissons entiers, aux "erreurs" de dénomination. |
| Tipo: Text |
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| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/publication-7035.pdf |
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| Le Goff, P. Y.. |
| Clam culture is a shellfish farming activity that has now entered a phase that will determine its future. After the first experimental trials and pilot projects, private investors have set this new aquaculture activity in motion. Today, the progress of clam production is conditioned, in part, on public authorities and financial organisations. On what basis should decisions be made so that appropriate choices are made for the development of clam culture, while respecting other users of coastal areas? This financial and economic study of clam culture seeks to give an overview of current clam farming by analysing operations that have entered the production phase. This approach to productivity of this activity will be done using classical financial analysis... |
| Tipo: Text |
Palavras-chave: SEM. |
| Ano: 1987 |
URL: http://archimer.ifremer.fr/doc/1987/these-4082.pdf |
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| Deslous Paoli, Jean-marc. |
| Dans le bassin de Marennes- Oléron , Crepidula fornicata a principalement colonisé trois secteurs (les bords du banc de Charret, le courant d'Oléron, les abords de l'Estrée) à des densités dépassant 2 500 individus au mètre carré, mais aussi présente de façon diffuse dans tout le nord du bassin. La biomasse estimée, pour les deux premiers secteurs, est d'environ 3 700 tonnes dont 1 500 tonnes ont été draguées et rejetées à terre en 1983. Il semble par ailleurs qu'il y ait un début d'infestation des gisements à Pecten maximus dans le pertuis d'Antioche. La courbe de croissance moyenne de Crepidula fornicata a été définie en fonction de l'âge (Lc = 78,79 (1 - e - 0,439(t - 0,347)) , et , du fait de la correspondance âge-position dans les associations en... |
| Tipo: Text |
Palavras-chave: Crepidula fornicata; Répartition géographique; Dynamique de population; Biodéposition; Biologie; Filtration; Bassin de Marennes Oléron. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/00092/20357/18018.pdf |
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| Derolez, Valerie; Fiandrino, Annie; Munaron, Dominique; Cadoret, Marine. |
| L’objectif de cette étude est de mettre en évidence et de hiérarchiser les pressions anthropiques ayant le plus d’impact sur les éléments de qualité DCE sur les lagunes méditerranéennes et de consolider ainsi les liens état/pressions. Il s’agit également de mettre en évidence des groupes de masses d’eau homogènes en termes de pressions. Ce travail s’appuie sur les précédentes études menées sur le sujet (Battut, 2010 ; Bouchoucha et al., 2010 ; Meinesz et al., 2013) et vise à les compléter grâce : • à la mise en œuvre d’une approche descriptive multidimensionnelle qui permet de mettre en évidence les interactions entre les différentes métriques de pression et d’état et de regrouper les masses d’eau similaires, • à l’intégration de données de pression et... |
| Tipo: Text |
Palavras-chave: Lagunes; Pressions anthropiques; État DCE. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00254/36574/35112.pdf |
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| Schiller, Andreas; Bell, Mike; Brassington, Gary; Brasseur, Pierre; Barciela, Rosa; De Mey, Pierre; Dombrowsky, Eric; Gehlen, Marion; Hernandez, Fabrice; Kourafalou, Villy; Larnicol, Gilles; Le Traon, Pierre-yves; Martin, Matthew; Oke, Peter; Smith, Gregory C.; Smith, Neville; Tolman, Hendrik; Wilmer-becker, Kirsten. |
| The marine environment plays an increasingly important role in shaping economies and infrastructures, and touches upon many aspects of our lives, including food supplies, energy resources, national security and recreational activities. Global Ocean Data Assimilation Experiment (GODAE) and GODAE OceanView have provided platforms for international collaboration that significantly contribute to the scientific development and increasing uptake of ocean forecasting products by end users who address societal issues such as those listed above. Many scientific challenges and opportunities remain to be tackled in the ever-changing field of operational oceanography, from the observing system to modelling, data assimilation and product dissemination. This paper... |
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| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00284/39522/38015.pdf |
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| Dussauze, Morgan; Menesguen, Alain; Dumas, Franck. |
| Two techniques of tracking are compared for delineating the marine area impacted by a river plume. The first one uses a simple conservative tracer released in the river during a several year long period: the probability density function of the tracer concentration in each mesh of the model is used to map 3 characteristic descriptors of the freshwater influence (10%, 50% and 90% percentiles). The second one uses a signature of the river attached to a state variable of a biogeochemical model (e.g. the Dissolved Inorganic Nitrogen components), which can be followed in space and time in the various nitrogenous state variables. Departure between the two methods increases when tracking of nitrogen is considered in biogeochemical forms more and more distant from... |
| Tipo: Text |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00068/17892/15423.pdf |
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| Malay, Maria Celia (machel) D.; Paulay, Gustav. |
| The diversity on coral reefs has long captivated observers. We examine the mechanisms of speciation, role of ecology in speciation, and patterns of species distribution in a typical reef-associated clade-the diverse and colorful Calcinus hermit crabs-to address the origin of tropical marine diversity. We sequenced COI, 16S, and H3 gene regions for similar to 90% of 56 putative species, including nine undescribed, "cryptic" taxa, and mapped their distributions. Speciation in Calcinus is largely peripatric at remote locations. Allopatric species pairs are younger than sympatric ones, and molecular clock analyses suggest that > 2 million years are needed for secondary sympatry. Substantial niche conservatism is evident within clades, as well as a few major... |
| Tipo: Text |
Palavras-chave: Allopatric speciation; Biodiversity; Biogeography; Color pattern evolution; Circumtropical speciation; Coral reef; Coral triangle; Cryptic species; Crustacea; ESU; Indo-Malayan hot spot; Molecular phylogenetics; Sympatric speciation. |
| Ano: 2010 |
URL: https://archimer.ifremer.fr/doc/00495/60623/64108.pdf |
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| Trut, Gilles. |
| L'estuaire de l'Adour, caractérisé par une taille réduite et une embouchure fortement urbanisée et industrialisée, constitue un enjeu socio-économique fort pour le département des Pyrénées-Atlantiques. Dans ce contexte, un Secrétariat Permanent à la Prévention des Pollutions Industrielles (SPPPI), chargé de veiller à la préservation de l'écosystème estuarien est créé en 1999. L'étude de la qualité de l'estuaire de l'Adour, programmée sur trois années (2001-2003) a été initiée par le Groupe "Eau" émanant de cette structure. Elle comporte trois volets indissociables confiés à trois organismes différents - L'Université de Pau étudie plus particulièrement la contamination des sédiments de l'estuaire. - La CQEL 64 est chargée de l'évaluation de la qualité de... |
| Tipo: Text |
Palavras-chave: Matière vivante; Contaminants; Estuaire de l'Adour; Qualité des eaux. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/00424/53533/54389.pdf |
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| Baud, Jean-pierre; Le Bayon, Nicolas; Haure, Joel; Nourry, Max; Palvadeau, Hubert; Penisson, Christian; Naciri-graven, Yamama; Goyard, Emmanuel; Barre, Marc. |
| Depuis 1985, un programme de sélection de l'huître plate, Ostrea edulis résistante au protozoaire Bonamia ostreae a été initié par IFREMER. Deux lignées sélectionnées L85 et L89 respectivement de 3ème et de 2èmt: génération ont été produites avec 17 et 21 familles différentes. Une lignée mixage (LBS x L89) de 7 familles et un témoin de 5 familles issu de géniteurs de Quiberon sans pression de sélection complètent le dispositif expérimental. |
| Tipo: Text |
Palavras-chave: Croissance; Génétique; Huîtres plates; Ostrea edulis. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/1997/acte-3245.pdf |
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| Retho, Michael; Gabellec, Raoul. |
| La station de mesure Molit entre dans la gamme de produits MAREL. Cette gamme est constituée d’outils développés pour l’observation en continu de paramètres hydrologiques. La bouée Molit a été déployée en baie de Vilaine du 2 mars 2011 au 22 septembre 2011. Cette station est équipée : - d’une sonde multipramètre MP6 qui mesure les paramètres : température, salinité, oxygène dissous, turbidité et fluorescence. Les mesures sont réalisées à 2 niveaux (surface et fond) avec une fréquence de une mesure horaire. - de deux analyseurs de nutriments (Chemini) mesurant les concentrations en nitrate et silicate avec une fréquence de une mesure toutes les 12 heures. Les données acquises par la bouée MOLIT sont transmises par liaison GSM numérique à la station de... |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00117/22814/20621.pdf |
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| Grech-angelini, Sebastien; Stachurski, Frederic; Lancelot, Renaud; Boissier, Jerome; Allienne, Jean-francois; Marco, Sylvain; Maestrini, Oscar; Uilenberg, Gerrit. |
| Background: Corsica is a mountainous French island in the north-western Mediterranean presenting a large diversity of natural environments where many interactions between domestic animals and wild fauna occur. Despite a favourable context for ticks and tick-borne diseases (TBDs), the tick fauna of Corsica has not systematically been investigated. Methods: For one year (May 2014-May 2015), a survey of ticks infesting cattle was performed in the three Corsican cattle slaughterhouses. Two of these were visited monthly and one quarterly; the ticks were manually collected, just after flaying. Ticks were identified on their morphology; when necessary, some specimens were also molecularly identified by sequencing mitochondrial cox1 (cytochrome c oxidase subunit... |
| Tipo: Text |
Palavras-chave: Ticks (Ixodidae); Cattle; Domestic animals; Wild animals; Molecular identification; Corsica. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00361/47191/71863.pdf |
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| Soliva, Roger; Ballas, Gregory; Fossen, Haakon; Philit, Sven. |
| Porous sandstones tend to deform by the formation of low-permeability deformation bands that influence fluid flow in reservoir settings. The bands may be distributed or localized into clusters, and limited recent data suggest that tectonic regime may exert control on their distribution and clustering. In order to explore this suggestion, we performed a synthetic analysis based of 73 sets of bands, including 22 new sets measured for a reverse Andersonian regime that fill the important gap in data for this context. We find a surprisingly strong correlation between clustering and tectonic regime, where bands clearly are more distributed in the reverse regime compared to the normal regime. Together with the observed band distributions, capillary pressure data... |
| Tipo: Text |
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| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00345/45668/45543.pdf |
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| Ioannidis, Chris; Lantz, Frederic. |
| (Not controled OCR) Sole is a species whose market has been expanding steadily since the end of the 70's ; landings have doubled, from 4097t in 1979 to 8048t in 1987. In real terms (1980=100) the value of landings has increased from FF124 m to FF265 m over the same period. One must appreciate that the importance of fresh sole lies in its high valuation. Despite the fact that the species occupies no more than 1.66% of total landings in terms of weight, in value terms exceeds 8.5% of the total, making sole the third most valuable species in France. Sole is consumed essentialy fresh and its price to the consumer does not therefore depend on any transformation process. It depends solely on demand and supply (domestic landings... |
| Tipo: Text |
Palavras-chave: SEM. |
| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/1990/acte-2463.pdf |
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| Naafs, B. D. A.; Hefter, J.; Grutzner, J.; Stein, R.. |
| During the six Heinrich events of the last 70 kyr, episodic calving from the circum-Atlantic ice sheets released large numbers of icebergs into the North Atlantic. These icebergs and associated meltwater flux are hypothesized to have led to a shutdown of Atlantic Meridional Overturning Circulation and severe cooling in large parts of the Northern Hemisphere. However, due to the limited availability of high-resolution records, the magnitude of sea surface temperature (SST) changes related to the impact of Heinrich events on the midlatitude North Atlantic is poorly constrained. Here we present a record of U-37(K)-based SSTs derived from sediments of Integrated Ocean Drilling Project Site U1313, located at the southern end of the ice-rafted debris (IRD) belt... |
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| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00262/37305/35717.pdf |
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| Registros recuperados: 26.605 | |
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