Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1843 résultats pour les termes de recherche: phanérogames marines OR herbier

Affichage des résultats: 371 à 380

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Phosphated and sulphated marine polyhydroxylated steroids from the starfish Tremaster novaecaledoniae

ETOILE DE MER;SUBSTANCE NATURELLE;INVERTEBRE AQUATIQUE;ACTIVITE BIOLOGIQUE;STRUCTURE CHIMIQUE;STEROIDE POLYHYDROXYLE

Campagne d'observations et de marquage des tortues marines aux îles Surprises Le Leizour et Huon, (Récifs d'Entrecasteaux)

Sous l'égide du PROE (Programme Régional Océanien pour l'Environnement), une campagne d'observation et de marquage des tortues vertes (#Chelonia mydas$) s'est déroulée aux îles Surprises, Le Leizour et Huon (récifs d'Entrecasteaux) du 14/12/92...

Apport du satellite SPOT à la connaissance des écosystèmes récifaux coralliens. La végétation marine de l'île de Moorea, Polynésie française

Etude sur l'état des lieux de la pêche professionnelle dans le Parc naturel marin d'Iroise - Mesures réglementaires et mesures de gestion (Lot 2)

Observer, évaluer et suivre la biodiversité sous marine des lagons : Intérêt des techniques vidéo rotatives en haute dé:nition. Où en est-on en...

This article first draws up a balance sheet of all various implemented techniques to observe and monitor the shallow marine biodiversity. Then the article focuses on the techniques of the rotating high resolution submarine video and their implementat...

Herbivorous fishes and the potential of Caribbean marine reserves to preserve coral reef ecosystems

1. The development of macroalgae to the detriment of corals is now one of the major threats to coral reefs. Herbivorous fishes are partly responsible for algal regulation on coral reefs and their overexploitation favours the shift from scleractinian ...

Partial characterization of an exopolysaccharide secreted by a marine bacterium, Vibrio neocaledonicus sp nov., from New Caledonia

Aims Exopolysaccharides (EPS) are industrially valuable molecules with numerous useful properties. This study describes the techniques used for the identification of a novel Vibrio bacterium and preliminary characterization of its EPS. Methods and Re...

Numerical and experimental characterisation of interactions between two marine current turbines

The implantation and deployment of marine current turbine arrays depend on the understanding of their interactions. Based on a priori suggestions about the layout of marine energy converter arrays, we propose to highlight interactions effects between...

Remote High-Definition Rotating Video Enables Fast Spatial Survey of Marine Underwater Macrofauna and Habitats

Observing spatial and temporal variations of marine biodiversity from non-destructive techniques is central for understanding ecosystem resilience, and for monitoring and assessing conservation strategies, e.g. Marine Protected Areas. Observations ar...

Experimental study of the turbulence intensity effects on marine current turbines behaviour. Part I: One single turbine

The ambient turbulence intensity in the upstream flow plays a decisive role in the behaviour of horizontal axis marine current turbines. Experimental trials, run in the IFREMER flume tank in Boulogne-Sur-Mer (France) for two different turbulence int...