Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1377 résultats pour les termes de recherche: taux d'accumulation de particules

Affichage des résultats: 31 à 40

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Suivi des densites de flux verticaux des particules dans le canal de la Havannah, la baie Kwé et la rade nord de Prony : missions janvier-mars et avr...

Le programme de travail présenté fait suite à la définition de « l'Etat de référence » des densités de flux verticaux de particules déterminés pour le Canal de la Havannah, la Rade Nord et la Baie Kwé en 2007 (Convention IRD/Gor...

Suivi des densités de flux verticaux des particules dans le canal de la havannah, la baie Kwë et la Rade Nord de Prony

Selon les zones d'étude, que sont la Baie Kwé, la Rade Nord de Prony et le Canal de la Havannah, ont été effectués: - Le suivi temporel des apports terrigènes issus des bassins versants de la Baie Kwé impactée par les activités d'excavation...

Accumulation of nine metals and one metalloid in the tropical scallop Comptopallium radula from coral reefs in New Caledonia

Uptake of waterborne Cd, Co, Mn and Zn was determined in laboratory experiments using radiotracer techniques (Cd-109, Co-57, Mn-54 and Zn-65). Labelled Zn was mainly accumulated in the digestive gland (65%) and Co in kidneys (81%); Cd and Mn were sim...

New insights from age determination on toxic element accumulation in striped and bottlenose dolphins from Atlantic and Mediterranean waters

This study aimed at comparing toxic element (Hg, Cd) bioaccumulation in relation to age for bottlenose (Tursiops truncatus) and striped dolphins (Stenella coeruleoalba) from Mediterranean and Atlantic waters. Metal concentrations were also measured i...

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 ...

The metal transporter PgIREG1 from the hyperaccumulator Psychotria gabriellae is a candidate gene for nickel tolerance and accumulation

We used RNA-Seq to sequence the transcriptome of the nickel hyperaccumulator Psychotria gabriellae endemic from New Caledonia. Using these sequences, we identified the PgIREG1 transporter as a candidate gene for nickel hyperaccumulation.Nickel is an ...

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

ALTERATION CHIMIQUE;LATERITISATION;ROCHE ULTRABASIQUE;METAL;MINERALISATION;DISSOLUTION;ANALYSE CHIMIQUE;ANALYSE MINERALOGIQUE;PLATINE

The metal transporter PgIREG1 from the hyperaccumulator Psychotria gabriellae is a candidate gene for nickel tolerance and accumulation

Accumulation et transfert de Ni, Cr, Co, Mn et Fe dans des organismes d'eau douce prélevés en rivière sous influence minière (Mont Koniambo, Nouve...

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 ...