Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 394 résultats pour les termes de recherche: rat OR Rattus rattus

Affichage des résultats: 141 à 150

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Sedimentation of particulate matter in the south-west lagoon of New Caledonia : spatial and temporal patterns

Suspended and sedimented particulate materials were assessed monthly at five sites on the south-west lagoon of New Caledonia, from May 1986 to April 1987. Sedimentation of particulate matter was measured using sediment traps for 24 h. Resuspension, w...

One new endemic plant species on average per month in New Caledonia, including eight more new species from ile Art (Belep Islands), a major micro-hots...

The New Caledonian biodiversity hotspot contains many micro-hotspots that exhibit high plant micro-endemism, and that are facing different types and intensities of threats. The Belep archipelago, and especially ile Art, with 24 and 21 respective narr...

Twenty years after Jaffre et al. (1998), is the system of protected areas now adequate in New Caledonia ?

Protected areas are the cornerstone on which conservation strategies are often built. Adapting systems of protected areas to rapid global changes is critical to meet the challenge of conservation in biodiversity hotspots. Twentyyears ago, Jaffre et a...

Infertile landscapes on an old oceanic island: the biodiversity hotspot of New Caledonia

The OCBIL theory comprises a set of hypotheses to comprehend the biota of old, climatically buffered, infertile landscapes (OCBILs). Here, we review evidence from the literature to evaluate the extent to which this theory could apply to the biodivers...

Garnierite characterisation for open data bases for nickel laterite exploration

The nickel laterite mining industry faces lower recovery rates related to low ore grades, multiple nickel carrying minerals, as well as lateral and vertical heterogeneities at ore deposit scale. Garnierite, a complex mixture of nickel-bearing phyllos...

Garnierite characterization for open mineral databases

The nickel laterite mining industry faces lower recovery rates related to low ore grades, multiple nickel carrying minerals, as well as lateral and vertical heterogeneities at ore deposit scale. Garnierite, a complex mixture of nickel-bearing phyllos...

Peridotite Weathering and Ni Redistribution in New Caledonian Laterite Profiles: Influence of Climate, Hydrology, and Structure

The peridotite massifs of New Caledonia are characterised by complex hydrodynamics influenced by intense inherited fracturing, uplift, and erosion. Following the formation of the erosion surfaces and alteration processes, these processes drive chemic...

Unexpected microbial diversity in new Caledonia's ultramafic ecosystems with conservation implications in a biodiversity hotspot

Soils harbour an incredible diversity of microorganisms that play crucial roles in ecosystem functioning. However, this biodiversity remains largely overlooked, with a poor understanding of how patterns form across landscapes. An eDNA metabarcoding a...

Campagne de surveillance de la population de Lacertoides pardalis (Scincidae) de la mine A1 - Commune du Mont-Dore (province Sud)

Le scinque-léopard de Nouvelle-Calédonie, Lacertoides pardalis, est une espèce spécialisée, inféodée à un type d'habitat particulier, possédant un spectre alimentaire original. En raison de son aire de distribution restreinte à ces quelque...

Réalisation d’enquêtes en province Sud sur les préoccupations et les attentes du grand public en matière d’environnement

L'objectif principal de cette étude est d'aider l'OEIL à orienter ses actions qui, selon les missions qui lui sont attribuées, sont définies en trois axes : la surveillance environnementale, l'optimisation de cette surveillance et enfin l'informa...