Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 818 résultats pour les termes de recherche: centrale de Doniambo

Affichage des résultats: 191 à 200

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A new starting point for the South and Equatorial Atlantic Ocean

The opening of the Equatorial and South Atlantic Oceans is still a matter of debate, particularly as concerns the locations of the intraplate deformation. We propose here a critical review of the kinematic models published since Bullard et al., 1965,...

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...

Logiques utilitaristes et logiques sociales : aspects de l'expansion de l'élevage bovin en milieu mélanésien de Nouvelle-Calédonie;Milieux insulai...

Les îles et archipels d'Océanie ne connaissaient pas de production marchande avant que les Européens ne s'y installent et ne les colonisent. Dans des contextes et avec des modalités variables, les formes d'organisation précoloniale - ou ce qui e...

Blackfin tuna (Thunnus atlanticus) fishing around FADs in Martinique (French West Indies)

This paper examines the fishing of blackfin tuna (Thunnus atlanticus) around Fish Aggregating Devices (FADs) in Martinique (French West Indies). It is based on the compared analysis of catches from monthly experimental fishing surveys and sampling of...

Taxonomy and biogeography of the New Caledonian species of Xylopia L. (Annonaceae)

A taxonomic review of the New Caledonian representatives of the pantropical tree genus Xylopia L. (Annonaceae) is presented based on museum study of 157 collections. Distinctions are clarified among the four endemic species, two of them previously un...

L'argent et la coutume, Maré (Nouvelle-Calédonie)

La problématique de cette thèse s'est construite à partir d'une question que se posent les Maréens : peut-on être Maréen (ou Kanak) alors que la coutume est fortement monétarisé ? Cette interrogation révèle un paradoxe qui, lors des enquêt...

Molecular and cytological characterization of a Glomus sp. able to induce myconodules in Casuarinaceae

Root systems of 8 Gymnostoma species, G. poissonianum, G. leucodon, G. webbianum, G., G. australianum, G. sumatranum, G. rumphianum and G. papuanum were sampled from various stands in New Caledonia, Australia and Malaysia. All six species exhibit nod...

Obduction et collision : exemples de la Nouvelle-Calédonie et de la zone de subduction des Nouvelles-Hébrides

Cette thèse présente deux cas particuliers d'évolution de la lithosphère océanique aux frontières de plaques. La première partie concerne l'étude géophysique de la zone d'enracinement de la nappe ophiolitique en Nouvelle-Calédonie. Cette pa...

Phylogeography of Noah's giant clam

Noah's giant clam (Tridacna noae), recently resurrected from synonymy with T. maxima, occurs from Christmas Island to the Northern Line Islands and from the Ryukyu Islands to New Caledonia. We used mitochondrial and microsatellite markers to investig...

Host effect and high ectomycorrhizal diversity in tropical rainforests on ultramafic soils in New Caledonia

Tropical rainforests have been thought to have low prevalence and diversity of ectomycorrhizal symbioses. However, to date, tropical regions have been poorly sampled for ectomycorrhizal fungi. Here, we investigated ectomycorrhizal fungal community di...