Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1775 résultats pour les termes de recherche: eaux usées

Affichage des résultats: 491 à 500

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Génotypage des géniteurs de Lates calcarifer de Tahiti : aide à la domestication raisonnée du Loup Tropical pour la filière tahitienne

The tropical seabass Lates calcarifer was introduced in Tahiti in 1984 and then was domesticated without other introduction. Three successive generations have been obtained in captivity. Tissue samples of the 38 animaIs which represent the total Tahi...

Synthesis on moored FADs in the North West Pacific region

In early 1980s, fad fisheries were introduced from the Philippines to Japan, mainly to Okinawa. The fisheries have well developed becoming one of the main fisheries in Okinawa where 210 fads are approved to deploy in 1999. The annual catch by roughly...

Modulation of habitat-based conservation plans by fishery opportunity costs : a New Caledonia case study using fine-scale catch data

Numerous threats impact coral reefs and conservation actions are urgently needed. Fast production of marine habitat maps promotes the use of habitat-only conservation plans, where a given percentage of the area of each habitat is set as conservation ...

Inferring savannah-rainforest boundary dynamics from vegetation structure and composition : a case study in New Caledonia

A direct consequence of deforestation and forest fragmentation in the tropics is the increased importance of boundaries between forest fragments and savannahs. These boundaries are critical zones for understanding the dynamics of savannahs and forest...

Toward an inordinate fondness for stars, beetles and lobophora ? Species diversity of the genus lobophora (Dictyotales, Phaeophyceae) in New Caledonia

Until the recent use of molecular markers, species diversity of Lobophora, an ecologically important brown algal genus with a worldwide distribution in temperate and tropical seas, has been critically underestimated. Using a DNA-based taxonomic appro...

A framework for mapping small-scale coastal fisheries using fishers' knowledge

Collecting spatial information on fisheries catch and effort is essential to understanding the spatial processes of exploited population dynamics and to manage heterogeneously distributed resources and uses. The use of fishers' knowledge through geog...

Quantitative filter technique measurements of spectral light absorption by aquatic particles using a portable integrating cavity absorption meter (QFT...

The accurate determination of light absorption coefficients of particles in water, especially in very oligotrophic oceanic areas, is still a challenging task. Concentrating aquatic particles on a glass fiber filter and using the Quantitative Filter T...

Contribution à l'amélioration des survies et performances de reproduction de L. stylirostris en saison fraîche en Nouvelle-Calédonie

Since 1993, the New Caledonian shrimp industry has been faced with cold season mortality outbreaks of multifactorial origin. This pathology called “Syndrome 93” affects as well animals in grow-out ponds as broodstock after their transfer in matur...

Remote High-Definition Rotating Video Enables Fast Spatial Survey of Marine Underwater Macrofauna and Habitats

Observing spatial and temporal variations of marine biodiversity from non-destructive techniques is central for understanding ecosystem resilience, and for monitoring and assessing conservation strategies, e.g. Marine Protected Areas. Observations ar...

The significant contribution of FADs to Solomon Taiyo Limited's fishing operations

From 1972, when Solomon Taiyo Limited (stl) started a pole-and-line fishing operation, to 1980, stl vessels had been catching tuna almost exclusively from surface free-swimming schools. In 1981, a fad programme group purse-seining fishing operation, ...