Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 2307 résultats pour les termes de recherche: ~riviere OR creek OR eau douce

Affichage des résultats: 711 à 720

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Quelques données biométriques sur les albacores de la région ouest de la Nouvelle-Calédonie

Covariance analysis of regressions for 8 characters do not show any significant difference between males and females. But for the length of the pectoral, the variance ratio is rather close to the significant level as already observed for yellowfin. E...

Problems and perspectives of the pearl oyster aquaculture in French Polynesia.

The first attempt to obtain artificial pearls from the black-lip pearl oyster Pinctada margaritifera in French Polynesia dates back to 1963. The pearl oyster culture has grown quickly especially since the eighties. This industry is now the first expo...

Géologie des Escarpements de Porcupine et de Goban (N.E. Atlantique). Résultats de la campagne de plongée CYAPORC.

The aim of the joint French-British CYAPORC submersible cruise was the exploration and sampling of the Porcupine and Goban Escarpments. A paleozoic mesozoic sedimentary cover has been evidenced abov ea caledonian or older cristalline basement on the ...

Les types géomorphologiques de littoraux en Irlande occidentale, préservation des sites et aménagement rationnel

The coastline of Western Ireland has an hyperoceanic climate. Its complicated geological structure and the Pleistocene glacial remnants explain its diversity. Cliffs have various altitudes (megafalaises, high cliffs, low cliffs). Lowland shores are r...

Bathymetric estimation using MERIS images in coastal sea waters

Bathymetric estimation using remote sensing images has previously been applied to high spatial resolution imagery such as CASI, Ikonos, or SPOT but not on medium spatial resolution images (i.e., MERIS). This choice can be justified when there is a ne...

Introduction à l'étude des sols issus de roches ultrabasiques : géomorphologie d'un massif de la côte Ouest de la Nouvelle Calédonie, le Boulinda...

L'histoire géomorphologique du massif du Boulinda parait avoir joué un rôle essentiel dans la mise en place des sols qui le recouvrent. L'étude de la forme du modelé et des éléments grossiers résiduels (cuirasse ferragineuse, sables et gra...

Novitates neocaledonicae VII : a new monocaulous species of Bocquillonia (Euphorbiaceae) from New Caledonia

A new species of Euphorbiaceae, Bocquillonia corneri, narrowly endemic to the extreme north-east of New Caledonia's main island, is here highlighted, described and illustrated, based on original morphological and architectural characteristics. This n...

Circulation patterns in a channel reef-lagoon system, Ouano lagoon, New Caledonia

This paper reports on two three-months field experiments carried out in the Ouano lagoon, New Caledonia. This channel-type lagoon, exposed to meso-tides, south pacific swells and trade winds, has been monitored thanks to a network of currents profile...

A new species of the sponge Raspailia (Raspaxilla) (Porifera : Demospongiae : Axinellida : Raspailiidae) from deep seamounts of the Western Pacific

A new species of Raspailia (Raspaxilla) frondosa sp. nov. is described from the deep seamounts of the Norfolk and New Caledonia Ridges. The morphology of the species resembles that of a frond or a fern, and its unique highly compressed axial skeleton...

Relations entre les caractéristiques physico-chimique du substrat et la nature des palétuviers - Implication sur la répartition spatiale des espèc...

Étude des propriétés physico-chimiques des sédiments (salinité, potentiel d'oxydo-réduction, pH) sous les différentes zones végétales rencontrées lors de la phase de terrain, dans le but de définir des interactions entre palétuviers et su...