Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1140 résultats pour les termes de recherche: lagon OR lagoon

Affichage des résultats: 551 à 560

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Étude de faisabilité d'un indicateur "pression de pêche" pour la Stratégie Nationale pour la Biodiversité en Nouvelle-Calédonie

Dans le cadre de la Stratégie Nationale pour la Biodiversité (SNB) du Ministère de l'Environnement, de l'Ecologie et du Développement Durable, une étude coordonnée par le Service d'Etat chargé de l'Agriculture, la Forêt et l'Environnement (DA...

ENSO signals in the vicinity of New Caledonia, South Western Pacific

Data collected in an area enclosing New Caledonia are analysed both for the open ocean (17 degrees S-27 degrees S, 169 degrees E-170 degrees E; 1972-1992) and for one point in its lagoon (1967-1993), in order to improve our knowledge of the regional ...

Recent innovations in cultivation of molluscs in french Polynesia

Until recently, mollusc production in French Polynesia was only based upon fishing, for local consumption of edible bivalves mainly the oyster Saccostrea cucullata and for the exportation of pearl-oyster shells. As a consequence of parasitism problem...

L'Ifremer entre ciel et mer. Dossier

It is about an article presenting the institute, its history, its presence and the projects it leads in New Caledonia. After a first part of general presentation of Ifremer a focus is placed on the strengthening of the presence of the institute in Ne...

Spot images for coral reef mapping in New Caledonia : a fruitful approach for classic and new topics;Proceedings of the sixth international coral reef...

... The following step described in this paper is the processing of real SPOT images for the same scope but extended to great areas of New Caledonian lagoon. LATICAL, a multi-purpose remote sensing laboratory, was set up in March 1988 at ORSTOM Cente...

The presence of scleractinian corals and their means of adapting to a muddy environment : the "Gail Bank";Proceedings of the sixth international coral...

Some forty species of scleractinian corals live in a particular, very muddy, environmment situated in the South-Western lagoon of New Caledonia between 25 and 30 metres depth. The seabed is caracterised by the topography of ridges valleys and bumps a...

Modern carbonate sedimentary facies on the outer shelf and slope around New Caledonia

We investigated surface carbonate sediments at 33 sites on the outer shelf and slope around New Caledonia (163°-167°E, 20°-23°S), at water depths of 75-720m. Four carbonate sedimentary facies are recognized on the basis of sediment size fractions...

Wave transformation over a barrier reef

This paper reports a combined observational and numerical study of wave transformation over barrier reefs. The field instrumentation, which consists in a cross-shore network of pressure sensors and one high resolution velocity profiler, has been depl...

High metabolic variation for seaweeds in response to environmental changes : a case study of the brown algae Lobophora in coral reefs

In the marine environment, macroalgae face changing environmental conditions and some species are known for their high capacity to adapt to the new factors of their ecological niche. Some macroalgal metabolites play diverse ecological functions and b...

Bleaching forces coral's heterotrophy on diazotrophs and Synechococcus

Coral reefs are threatened by global warming, which disrupts the symbiosis between corals and their photosynthetic symbionts (Symbiodiniaceae), leading to mass coral bleaching. Planktonic diazotrophs or dinitrogen (N-2)-fixing prokaryotes are abundan...