Observatoire de l'environnement Nouvelle Calédonie

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

Affichage des résultats: 91 à 100

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Étude du statut et de la distribution des oiseaux des forêts humides de la Province Sud de la Nouvelle-Calédonie - Rapport final.

Étude ayant pour but de dégager des priorités en terme de conservation du patrimoine avifaunistique de la Nouvelle-Calédonie en étudiant le statut et la distribution des oiseaux des forêts humides et les menaces qui s'exercent sur eux.

Prolifération d'espèces animales ou végétales

Une espèce, animale ou végétale, est dite envahissante lorsqu'elle prolifère et entre en concurrence avec les espèces natives. Elle prend alors la place des autres espèces et devient largement dominante, déséquilibrant tout l'écosystème. D...

A simple and rapid device for measuring planktonic primary production by in situ sampling, and 14C injection and incubation

A system (LET GO) is described that enables measurements of primary production at sea after #in situ$ incubation, with 14C being injected at depth immediately after enclosure of the sample. Each incubation cell, about 200 ml, is made of two transpare...

Phytoplankton dynamics in the southern New Caledonian lagoon during a southeast trade winds event

During the Echolag cruise (13 February-8 March 2007), the effect of 16-30 knot trade winds on abundance, community structure and dynamics of phytoplankton was investigated in the southern part of the New Caledonian coral reefs and surrounding oceanic...

Effluents from land based marine farms: nature, treatment, valorisation, modelisation. Applications to fish and shrimp rearing

Fish culture (seabass, turbot...) on the French metropolitan coast, and shrimp culture in the overseas territories (essentially New Caledonia and Tahiti) are subject to a regular development through land based farms. Three thematic of research on aqu...

Maturation and spawning in captivity of penaeid shrimps

As no indigenous species of commercial penaeid shrimp live in the waters of French Po1ynesia, the pre1iminary step in deve10ping shrimp aquaculture was to obtain maturation and spawning in captivity. Five species have been investigated. Wi1d-caught j...

Le développement socio-économique dans les DOM-TOM : état des lieux

The goal of this study was to provide economic data to align Ifremer's research programme with the global socio-economic context, which is the crux of this work. Although the economies of the French Overseas Departments and Territories are poorly und...

Lack of nucleotide variability in a beetle pest with extreme inbreeding

The coffee berry borer beetle #Hypothenemus hampei$ (Ferrari) (#Curculionidae$ : #Scolytinae$) is the major insect pest of coffee and has spread to most of the coffee-growing countries of the world. This beetle also displays an usual life cycle, with...

Impacts of shrimp farm effluent on water quality, benthic metabolism and N-dynamics in a mangrove forest (New Caledonia)

Water quality parameters, sediment oxygen demand (SOD), dissolved organic and inorganic nutrient fluxes, and N-cycle processes (nitrification; denitrification; dissimilatory nitrate reduction to ammonium (DNRA)) were determined in a New Caledonian ma...

Fermentative hydrogen production by a new alkaliphilic Clostridium sp (strain PROH2) isolated from a shallow submarine hydrothermal chimney in Prony B...

The hydrogen-producing strain PROH2 pertaining to the genus Clostridium was successfully isolated from a shallow submarine hydrothermal chimney (Prony Bay, New Caledonia) driven by serpentinization processes. Cell biomass and hydrogen production perf...