Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1584 résultats pour les termes de recherche: station d'épuration

Affichage des résultats: 1211 à 1220

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Complementarity of rotating video and underwater visual census for assessing species richness, frequency and density of reef fish on coral reef slopes

Estimating diversity and abundance of fish species is fundamental for understanding community structure and dynamics of coral reefs. When designing a sampling protocol, one crucial step is the choice of the most suitable sampling technique which is a...

Asexual reproduction by fission in Holothuria atra: Variability of some parameters in populations from the tropical Indo-Pacific

Holothuria atra is the most common aspidochirotid holothurian on tropical Indo-Pacific reefs, Asexual reproduction by transverse fission, followed by regeneration, has been studied at Reunion Island (Indian Ocean) and compared with different populati...

Colonization of coastal environments by foraminifera: insight from shrimp ponds in New Caledonia (sw Pacific)

The objectives of this study were to observe foraminiferal colonization patterns and behavior in shrimp ponds in New Caledonia during a shrimp-growing (farming) cycle. Weekly collecting at 10 stations in 8 shrimp ponds yielded a total of 170 samples ...

Fish communities of Geyser and Zelee coral banks (Western Indian Ocean).

The ichtyofauna of Geyser and Zelee coral banks (north of Mozambique canal) was investigated in 1996, this work being the first quantitative study on this area. Quantitative data were collected on 11 stations (mean depth 18 m) by visual observations ...

Adaptations morphologiques et biologiques chez un aphroditien interstitiel : pholoe swedmarki sp.n.

The first record of interstitial polychaetous annelids dates no more than forty years. Presently, the total number of interstitial species described is about one hundred. Up to the present, the large group of Aphroditoidea includes no interstitial re...

Complementarity of Rotating Video and Underwater Visual Census for Assessing Species Richness, Frequency and Density of Reef Fish on Coral Reef Slopes

Estimating diversity and abundance of fish species is fundamental for understanding community structure and dynamics of coral reefs. When designing a sampling protocol, one crucial step is the choice of the most suitable sampling technique which is a...

Bio-optical characterization and ocean colour inversion in the Eastern Lagoon of New Caledonia, South Tropical Pacific

The Eastern Lagoon of New Caledonia (ELNC) is a semi-enclosed system surrounded by an extensive coral reef barrier. The system has been suffering impacts from climate variability and anthropogenic activities, including mining exploitation. Satellite ...

Dissolved organic matter influences N-2 fixation in the New Caledonian lagoon (Western Tropical South Pacific)

Specialized prokaryotes performing biological dinitrogen (N-2) fixation ("diazotrophs") provide an important source of fixed nitrogen in oligotrophic marine ecosystems such as tropical and subtropical oceans. In these waters, cyanobacterial photosynt...

Caractérisation du milieu marin le long du tracé de l'émissaire du projet Goro Nickel, mai 2007 - Annexe III-A-6-10

Étude dressant un état des lieux du milieux marin le long du tracé du futur émissaire qui démarre de la côte Sud Est de la baie de Prony au voisinage du port de GNi, contourne la pointe de Méhoué et remonte vers l'Est par le canal de la Havan...

Forum sur le suivi des milieux terrestres du Sud Calédonien - les effets du SO2 sur la végétation

Forum sur le suivi des milieux terrestres du Sud Calédonien - Séance 6 - Quelles recommandations pour optimiser le suivi des milieux terrestres ? Vale Nouvelle-Calédonie étudie les effet du rejet de SO2 sur la végétation. Cette présentation fa...