Observatoire de l'environnement Nouvelle Calédonie

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

Affichage des résultats: 51 à 60

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Microsatellite-associated heterosis in hatchery-propagated stocks of the shrimp Penaeus stylirostris

Correlation between DNA microsatellite heterozygosity and growth rate was investigated in two hatchery-propagated stocks of the shrimp Penaeus stylirostris, which had been genetically isolated from wild founders for 17 generations, and from each othe...

Biomass and production of two Halimeda species in the southwest new caledonian lagoon

Two algal communities on unconsolidated sand, dominated by two Caulerpa populations, were studied in the southwestern New Caledonian lagoon. Biomass, growth rates and production were measured at two stations over one year. Biomass and growth rate of ...

Les espèces envahissantes dans l'archipel néo-calédonien - Un risque environnemental et économique majeur

Document dressant un état des connaissances sur les espèces envahissantes en Nouvelle-Calédonie (vertébrés, invertébrés et plantes terrestres, espèces d'eau douces), la présentation de ces espèces, les risques d'impact environnementaux, l'Ã...

Dynamics of N-2 fixation and fate of diazotroph-derived nitrogen in a low-nutrient, low-chlorophyll ecosystem : results from the VAHINE mesocosm exper...

N-2 fixation rates were measured daily in large (similar to 50 m(3)) mesocosms deployed in the tropical southwest Pacific coastal ocean (New Caledonia) to investigate the temporal variability in N-2 fixation rates in relation with environmental param...

Diazotroph community succession during the VAHINE mesocosm experiment (New Caledonia lagoon)

The VAHINE mesocosm experiment, conducted in the low-nutrient low-chlorophyll waters of the Noumea lagoon (coastal New Caledonia) was designed to trace the incorporation of nitrogen (N) fixed by diazotrophs into the food web, using large volume (50 m...

Seabird island restoration : New Caledonia - Eradication of rats, october 1998

Éradication des rats sur 26 îles du lagon de Nouméa pour protéger les oiseaux de mer et enlever l'effet négatif que cela peut avoir sur les touristes. Ce rapport s'accompagne de recommandations faites pour améliorer et protéger les valeurs bio...

Stress-tolerator leaf traits determine population dynamics in the endangered New Caledonian conifer Araucaria muelleri

Demographic and ecophysiological data for the endangered New Caledonian conifer, Araucaria muelleri (Araucariaceae), were analysed to: (i) evaluate population viability in relation to site conditions and human impacts; and (ii) advance our understand...

Shade-tolerance of seedlings of rain-forest trees : monodominants vs. subordinates and episodic vs. continuous regenerators

Several monodominant rain-forest trees in New Caledonia have population size structures suggesting establishment following large-scale disturbance, with eventual replacement by shade-tolerant species predicted in the absence of future disturbance. Li...

Enhancement of coral calcification via the interplay of nickel and urease

Corals are the main reef builders through the formation of calcium carbonate skeletons. In recent decades, coral calcification has however been impacted by many global (climate change) and local stressors (such as destructive fishing practices and ch...

Biofloc technology applied to rear shrimp Litopenaeus Stylirostris broodstock: An integrated and development research project in New Caledonia and Fre...

Shrimp farming in New-Caledonia faces up to difficulties. A fluctuating quality of broodstock prevents sustainable production of larvae in quantity and quality. The traditional extensive rearing method of broodstock in outdoor earthen ponds used in N...