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| Registros recuperados: 19 | |
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| L'Yavanc, Jacky. |
| La seule couverture bathymétrique complète donnant des renseignements sur l'altimétrie des estrans et sur la profondeur des chenaux date de 1864. Pour la mise en place d'un modèle hydrodynamique, une bathymétrie classique a été réalisée sur toute l'étendue du bassin d'Arcachon entre 1992 et 1993. Le premier chapitre traite : - des observations de la marée en différents points répartis autour et à l'intérieur du Bassin. Ces observations permettent notamment de mettre en évidence une déformation du plan d'eau à toutes heures de la marée. - des méthodes d'exécution et de traitement du levé bathymétrique. Le deuxième chapitre concerne l'évolution morphologique du Bassin sur une période de 130 ans. D'importantes modifications sont mises en évidence : - un... |
| Tipo: Text |
Palavras-chave: Bassin d'Arcachon; Bathymétrie; Morphologie; Comparaison bathymétrique. |
| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/00080/19127/16722.pdf |
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| Grellier, Patrick. |
| Vertebrate Cyclostome, the european sea lamprey is a sea spawning migrator amphihaline species, which is a parasite during its growing phase at sea. After the spawning migration, lampreys couple in the upper reach of water courses, they lay their eggs, then die from physiological misery. The eggs develop sheltered into a nest until hatching of small larvae, the ammocoetes. Morphologically very different from the adults, the ammocoetes spend a several years sedentary life, being burried into the sediment. Then, they metamorphose into young lampreys which undertake their downstream migration. As soon as they enter sea water, they continue growing at the expense of several species of fishes. |
| Tipo: Text |
Palavras-chave: Morphologie; Cycle Biologique; Migrations; Reproduction. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00085/19616/17256.pdf |
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| Lasserre, Claudine; Gras, Paul. |
| Après qu'on eut observé, d'abord chez Crassostrea angulata, puis chez Ostrea edulis et C. gigas, de diverses provance, des anomalies dans la morphologie et la structure des branchies -décrites sous le nom de "maladie des branchies", la question s'est posée de savoir si d'autres mollusques vivant dans le même milieu et, très souvent, auprès des huîtres, présentaient des altérations semblables. |
| Tipo: Text |
Palavras-chave: Mytiliculture; Mytilus edulis; Morphologie; Physiologie; Anomalie. |
| Ano: 1969 |
URL: http://archimer.ifremer.fr/doc/00010/12117/8843.pdf |
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| Ehrhold, Axel; Chevalier, Claire; Alix, Anne-sophie; Autret, Elodie; Caisey, Xavier; Drussel, Benjamin; Gaffet, Jean-dominique; Hamon, Dominique; Houlgatte, Eric; Pluquet, Fabrice; Biscara, Laurie; Choisnet, Justine; Bajjouk, Touria. |
| In 2000 Ifremer launched and coordinated the development of a monitoring strategy for the REBENT network (REseau BENThique) in order to assess the aftermath of the “Erika” oil spill which took place in December 1999. Its aim is to provide consistent baseline knowledge on coastal benthic habitats, as well as to develop a monitoring tool that detects changes at various spatial and temporal scales. Sector-based seabed habitat mapping in shallow water (< 50 m deep), is currently being conducted throughout Brittany's coastal waters using a combination of geoacoustic marine systems together with ground-truthing using biological grab sampling and seabed observations. Due to the extended area, the overlap of soft and rocky bottoms, and contrasting hydrological... |
| Tipo: Text |
Palavras-chave: Rebent; Trégor-Goëlo; Bréhat; Cartographie d’habitats; Sonar latéral; Macrofaune benthique; Peuplements; Crépidule; Maërl; Sédiments; Morphologie; Dynamique sédimentaire; Rebent; Trégor-Goëlo; Bréhat archipelago; Marine habitat mapping; Sidescan sonar; Benthic macrofauna; Communities; Crepidula bed; Maerl; Sediment; Morphology; Bedload transpor. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00280/39161/37724.pdf |
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| Sournia, Alain; Belin, Catherine; Billard, Chantal; Catherine, Martial; Erard-le Denn, Evelyne; Fresnel, Jacqueline; Lassus, Patrick; Pastoureaud, Annie; Soulard, René. |
| A dinoflagellate has produced green-water events along the Atlantic and English Channel coasts of France since 1982. It differs morphologically from each of the 12 taxa or so of green gymnodinoid dinoflagellates previously known. As some morphological details, as well as their variability, remain to be ascertained, this organism is illustrated and described here under the provisional designation of Gymnodinium "sp. 1982". The presence of chlorophyll b has been confirmed by HPLC analysis but it could not be ascertained whether true chloroplasts are present, or symbionts. The distribution is coastal and estuarine. The number and intensity of the outbreaks may be related to river runoff and to the amount of preceding rainfall. An encysted stage is described.... |
| Tipo: Text |
Palavras-chave: Bloom; Océan Atlantique; Manche; Morphologie; Chlorophylle b; Répartition géographique; Zone côtière; Milieu marin; Phytoplancton; Basse Normandie; France; Europe; Pyrrophycophyta; Algae; Thallophyta; Gymnodinium; BLOOMS; DINOFLAGELLATES; GREEN WATERS; GYMNODINIUM; PHYTOPLANKTON. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/00133/24470/22487.pdf |
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| Registros recuperados: 19 | |
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