Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1427 résultats pour les termes de recherche: changement climatique

Affichage des résultats: 521 à 530

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Forum sur le suivi des milieux terrestres du Sud Calédonien - Le réseau NC-PIPPN

Forum sur le suivi des milieux terrestres du Sud Calédonien - Séance 1 : Quels sont les réseaux locaux d'observation ? Ce document présente le réseau NC-PIPPN : New Caledonian Plant Inventories and Permanent Plot Network : - le dispositif mis ...

Forum sur le suivi des milieux terrestres du Sud Calédonien - un suivi, pour quoi faire ?

Forum sur le suivi des milieux terrestres du Sud Calédonien - Propos introductifs Ce document, présenté lors du forum sur les milieux terrestres, nous explique ce qu'est un suivi environnemental et à quoi il sert.

Earliest Eocene (53 Ma) convergence in the Southwest Pacific; evidence from pre-obduction dikes in the ophiolite of New Caledonia.

Uncertainty about timing and location of the initiation of convergence in the western and south western Pacific greatly hinders accurate plate tectonic reconstructions of subduction systems in that area. The chemistry and age of dikes intruding mantl...

Chemical and physical transfers in an ultramafic rock weathering profile: 2. Dissolution vs. accumulation of platinum group minerals

The chemical weathering of ultramafic rocks has resulted in eluvial concentration of Pt-group minerals (PGM) in lateritic weathering profiles of southern New Caledonia. The Pt mineralization interpreted as being primary consists of Pt-group minerals ...

Foraminiferal assemblages: tools for assessment of shrimp pond conditions

Meiofauna is a functional group made of small benthic metazoans 45 to 500µm in size. Although protista, foraminifera living in this kind of environment are often put in to the meiofauna. Meiofauna has been studied in New Caledonia for its double rol...

Determination of gender in the pearl oyster pinctada margaritifera

The pearl industry in French Polynesia is based on exploitation of natural stocks of the black-lip pearl oyster (Pinctada margaritifera); it generates an annual turnover of 90 million euros. Improvements in pearl quality need genetic studies to impro...

Sustainability of exploited marine ecosystems through protected areas: A viability model and a coral reef case study

Overexploitation of marine resources remains a problem worldwide. Many works advocate for the use of marine reserves as a central element of future stock management in a sustainable perspective. In the present paper, we address the influence of prote...

Evaluation de l’impact de l’aquaculture de crevettes sur les mangroves de Nouvelle-Calédonie

L’aquaculture de crevettes Litopeneus stylirostris, qui est apparue en 1970 en Nouvelle-Calédonie, est devenue une activité économique importante aujourd’hui avec 17 fermes en production et un tonnage de 2000 tonnes en 2004. Situées sur des z...

Detection of shrimp pathogen Vibrio nigripulchritudo in sediments of a New-Caledonian grow-out pond during a drying period

Experimental infections together with epidemiological studies have shown that pathogenic and non‐pathogenic isolates of V. nigripulchritudo co‐existed in shrimp farm environment (2, 3). Moreover, obtained results also demonstrated that the “sum...

Three years of experimental and applied research on the use of dietary probiotic Pediococcus acidilactici in shrimp culture : overview of the main res...

In recent years the biological control of diseases by environmental friendly methods such as probiotics has become an important subject of investigation in aquaculture research. Probiotics are live microorganisms which when administrated in adequate ...