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

h

h

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...

Variability in diel and seasonal in situ metabolism of the tropical gastropod Tectus niloticus

Researchers often use metabolic measurements in the field over narrow time periods to estimate an organism's metabolism over large time scales. Here, we measured in situ respiration, calcification and excretion rates of the tropical gastropod Tectus ...

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 ...

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...

Synthèse des connaissances environnementales à l’Île des Pins (Province Sud, Nouvelle-Calédonie)

La commune de l'Île des Pins est l'un des membres fondateurs de l'Observatoire de l'environnement en Nouvelle-Calédonie- OEIL. Ce territoire, qui est le plus au sud de la Nouvelle-Calédonie, possède des milieux naturels riches et variés représe...

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...