Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1427 résultats pour les termes de recherche: changement climatique

Affichage des résultats: 531 à 540

h

h

Effects of short-term environmental disturbances on living benthic foraminifera during the Pacific oyster summer mortality in the Marennes-Oléron Bay...

Sediment cores were collected from April to August 2004 on tidal mudflats of the macrotidal Marennes-Oléron Bay (SW France), famous for the cultivation of Pacific oysters (Crassostrea gigas). The response of living (stained) benthic foraminifera to ...

ENSO signals in the vicinity of New Caledonia, South Western Pacific

Data collected in an area enclosing New Caledonia are analysed both for the open ocean (17 degrees S-27 degrees S, 169 degrees E-170 degrees E; 1972-1992) and for one point in its lagoon (1967-1993), in order to improve our knowledge of the regional ...

Etude d'un milieu gélose semi-sélectif pour la recherche de Vibrio penaecida : tests de nouvelles méthodes diagnostiques dans le cadre du programme...

Ce travail décrit la mise au point d'un milieu gélosé semi-sélectif visant à mettre en évidence les Vibrio penaecida en élevage larvaire de pénéides. Le ZoBell-Mannitol-Saccharose-Bleu de bromothymol (ZMSB) a un pH élevé, une forte teneur ...

Exploration de la performance de la gouvernance des petites pêcheries du Pacifique Sud par une démarche de recherche-action

Notre travail est une contribution à l'élaboration d'un cadre de recherche pour étudier le développement institutionnel pour la cogestion des ressources halieutiques communes, qui reste un mode de gouvernance minoritaire à l'échelle mondiale ma...

Nickel and ocean warming affect scleractinian coral growth

The sensitivity of corals and their Symbiodinium to warming has been extensively documented; however very few studies considered that anthropogenic inputs such as metal pollution have already an impact on many fringing reefs. Thus, today, nickel rele...

Acclimatization of massive reef-building corals to consecutive heatwaves

Reef-building corals typically live close to the upper limits of their thermal tolerance and even small increases in summer water temperatures can lead to bleaching and mortality. Projections of coral reef futures based on forecasts of ocean temperat...

Recent spread of the sida leafbeetle, Calligrapha pantherina Stal, 1859 (Coleoptera: Chrysomelidae: Chrysomelinae) in New Caledonia

We report the recent arrival and subsequent spread of the Sida Leafbeetle, Calligrapha pantherina Stal, 1859, in the archipelago of New Caledonia. The species seems to have a rapid spread as it is now recorded all along the west coast and also have s...

Earliest Eocene (53 Ma) convergence in the Southwest Pacific; evidence from pre-obduction dikes in the ophiolite of New Caledonia.

Uncertainty about timing and location of the initiation of convergence in the western and south western Pacific greatly hinders accurate plate tectonic reconstructions of subduction systems in that area. The chemistry and age of dikes intruding mantl...

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 ...

Earliest Eocene (53 Ma) convergence in the Southwest Pacific; evidence from pre-obduction dikes in the ophiolite of New Caledonia.

Uncertainty about timing and location of the initiation of convergence in the western and south western Pacific greatly hinders accurate plate tectonic reconstructions of subduction systems in that area. The chemistry and age of dikes intruding mantl...