Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1775 résultats pour les termes de recherche: eaux usées

Affichage des résultats: 601 à 610

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Remote sensing of Trichodesmium spp. mats in the western tropical South Pacific

Trichodesmium is the major nitrogen-fixing species in the western tropical South Pacific (WTSP) region, a hot spot of diazotrophy. Due to the paucity of in situ observations, remote-sensing methods for detecting Trichodesmium presence on a large scal...

Biofilm and temperature controls on greenhouse gas (CO2 and CH4) emissions from a Rhizophora mangrove soil (New Caledonia)

Seasonal variations of CO2 and CH4 fluxes were investigated in a Rhizophora mangrove forest that develops under a semi-arid climate, in New Caledonia. Fluxes were measured using closed incubation chambers connected to a CRDS analyzer. They were perfo...

Characterization and sources of colored dissolved organic matter in a coral reef ecosystem subject to ultramafic erosion pressure (New Caledonia, Sout...

The eastern lagoon of New Caledonia (NC, Southwest Pacific), listed as a UNESCO World Heritage site, hosts the world's second longest double-barrier coral reef. This lagoon receives river inputs, oceanic water arrivals, and erosion pressure from ultr...

Compensating for geographic variation in detection probability with water depth improves abundance estimates of coastal marine megafauna

The probability of an aquatic animal being available for detection is typically < 1. Accounting for covariates that reduce the probability of detection is important for obtaining robust estimates of the population abundance and determining its status...

An optimised passive acoustic sampling scheme to discriminate among coral reefs' ecological states

In the present era of rapid global change, innovative monitoring methods can greatly enhance our ability to detect ecological disturbances and prioritise conservation areas in a timely and cost-effective manner. While Passive Acoustic Monitoring (PAM...

Simultaneous combined XRF-XRD analysis of geological sample: New methodological approach for on-site analysis on New-Caledonian Ni-rich harzburgite

There is a growing interest in on-site, real-time analytical solutions for mining and environmental projects to characterize large areas and/or volumes of raw materials that are sometimes highly heterogeneous in terms of elemental distribution and mi...

Transports maritimes

Puisque la Nouvelle-Calédonie est une île, les importations et exportations de marchandises se font essentiellement par voie maritime. En dehors des produits frais, la plupart des marchandises sont acheminées sur le Territoire en porte-conteneurs...

Optimisation des données

Standardisation des méthodes de suivi des peuplements de poissons et crustacés des eaux douces La pêche électrique est employée en Nouvelle-Calédonie pour le suivi des poissons d'eau douce. Cependant des disparités dans les protocoles mis en ...

Etudes environnementales 2019

Cette page donne accès à l'ensemble des rapports édités en 2019 par l'OEIL en collaboration avec de nombreux auteurs. [Revenir à l'ensemble des rapports](http://www.oeil.nc/fr/page/etudes-environnementales-0) Air Eaux douces Milieu marin Mi...

Incident sur l'émissaire marin de Vale Nouvelle-Calédonie

L'Observatoire de l'environnement en Nouvelle-Calédonie (OEIL) a été informé le mardi 12 novembre au matin par Vale Nouvelle-Calédonie de la présence d'une portion de tuyau flottant en surface dans la zone d'implantation de l'émissaire marin. ...