Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1774 résultats pour les termes de recherche: eaux usées

Affichage des résultats: 501 à 510

h

h

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...

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 ...

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...

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...

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 ...

Etude des pecheries, reflexions sur l'environment et la gestion multispecifique.

All considerations about halieutic stocks inevitably had to attain the recognition of relations which are established between the resource and its natural environment. These phenomenons are exposed in the first part. About consequences of human inter...

Vincent Mardhel

Hydro-géologie | Vincent Mardhel Vincent Mardhel est directeur de l'antenne BRGM (Bureau de recherches géologiques et minières) en Nouvelle-Calédonie. Hydrogéologue au sein du BRGM depuis 1989, ili associe son expertise dans le domaine de l'ea...

Suivi environnemental Rapport annuel 2011 CAPTAGES

Le procédé de traitement hydrométallurgique employé par Vale Nouvelle-Calédonie requiert un apport journalier d'eau important ; la solution retenue a été de capter les eaux du lac de Yaté pour répondre à ce besoin. Les eaux sont utilisées ...

Écosystème d'eau douce - Partie I : Caractérisation de l'état initial, Janvier 2005 - Partie II : Stratégies d'échantillonnage et bio-indicateur...

Synthèse de l'état des connaissances sur les milieux d'eau douce en Nouvelle-Calédonie. Une première partie présente les milieux aquatiques rencontrés en Nouvelle-Calédonie ainsi que les habitats qui y sont associés et les stress qui s'exerce...