Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1425 résultats pour les termes de recherche: changement climatique

Affichage des résultats: 551 à 560

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Suivre l’évolution des paysages

Un outil du Géoportail amélioré [Cliquer sur l'image pour accéder à l'application PAYSAGE](http://geoportail.oeil.nc/paysage/) Forêts, terres agricoles, surfaces défrichées, zones urbanisées? Le recouvrement du sol de la province Sud est m...

Fréquence environnement n°16

Les crèmes solaires sont-elles dangereuses pour les coraux ? http://nouvellecaledonie.la1ere.fr/ Question de Charles, île des Pins [?](/sites/default/files/Podcasts/FREQUENCE_ENVIRONNEMENT/fe_sante_coraux.mp3)[Ecouter le podcast de la "Fréquenc...

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...

Population dynamics in some rainforests on ultramafic soils in New Caledonia and their impact on patterns of canopy richness;Deuxième conférence int...

Permanent plots are being established in monodominant and mixed rainforests over a range of altitudes on ultramafic soils in New Caledonia to investigate the factors determining canopy richness. Initial studies are examining the dynamics of the major...

Spatial distribution of microbial communities in the shallow submarine alkaline hydrothermal field of the Prony bay, New Caledonia

The shallow submarine hydrothermal field of the Prony Bay (New Caledonia) discharges hydrogen- and methane-rich fluids with low salinity, temperature (< 40°C) and high pH (11) produced by the serpentinization reactions of the ultramafic baseme...

Spatio-temporal variations in the composition of organic matter in surface sediments of a mangrove receiving shrimp farm effluents (New Caledonia)

In order to investigate spatio-temporal variations in the composition and origin of the benthic organic matter (OM) at the sediment surface in mangrove receiving shrimp farm effluents, fatty acid (FA) biomarkers, natural stable isotopes (delta C-13 a...

Assessing threats from coral and crustose coralline algae disease on the reefs of New Caledonia

The present study reports the results of the first quantitative survey of lesions on coral and crustose coralline algae (CCA) on reefs in the lagoon of New Caledonia. Surveys on inshore and offshore reefs were conducted at 13 sites in 2010, with 12 s...

Remote Antarctic feeding ground important for east Australian humpback whales

Understanding the dynamics of population recovery is particularly complex when an organism has multiple, remote breeding and feeding grounds separated by one of the longest known migration routes. This study reports on the most comprehensive assessme...

Goethite aging explains Ni depletion in upper units of ultramafic lateritic ores from New Caledonia

An upward loss of Ni is commonly reported in the oxide-rich unit of Ni-laterite deposits developed over ultramafic rocks in tropical regions, especially in freely drained and deeply weathered regoliths. Because goethite is the major mineral constitue...

Temporal variability of CO2 fluxes at the sediment-air interface in mangroves (New Caledonia)

Carbon budgets in mangrove forests are uncertain mainly due to the lack of data concerning carbon export in dissolved and gaseous forms. Temporal variability of in situ CO2 fluxes was investigated at the sediment-air interface in different seasons in...