Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1842 résultats pour les termes de recherche: phanérogames marines OR herbier

Affichage des résultats: 471 à 480

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Surveillance du milieu de la grande rade de Nouméa - Suivi milieu marin SLN 2014/2015 : Campagne 2014

Dans le cadre de l'arrêté ICPE du 12 novembre 2009 autorisant la Société Le Nickel à exploiter son usine de traitement de minerai de nickel de Doniambo, la SLN a missionné SOPRONER pour réaliser la surveillance du milieu marin dans la Grande R...

Suivi du milieu marin autour du site minier de Thio - Volet 1 : Résultats campagne annuelle 2016

En 2016, la Société Le Nickel (SLN) a mis en place un suivi environnemental du milieu marin de l'ensemble des sites du bord de mer sous l'influence de ses activités. Dans ce contexte, la zone de Thio, commune de la côte Est où la SLN exploite le...

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

Fishers' perceptions as indicators of the performance of Marine Protected Areas (MPAs)

How users perceive the performance of Marine Protected Areas (MPAs) is fundamental for the social acceptance of these zones. Moreover, their perceptions may be relevant for monitoring the effects of MPAs on extractive activities. This study analyzes ...

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 ...

A model-based evaluation of Marine Protected Areas: the example of eastern Baltic cod (Gadus morhua callarias L.)

The eastern Baltic cod stock collapsed as a consequence of climate-driven adverse hydrographic conditions and over fishing and has remained at historically low levels. Spatio-temporal fishing closures [Marine Protected Areas (MPAs)] have been impleme...

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...

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...