Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 217 résultats pour les termes de recherche: chlorophylle a

Affichage des résultats: 41 à 50

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Geographical variation in the foraging behaviour of the pantropical red-footed booby

While interspecific differences in foraging behaviour have attracted much attention, less is known about how foraging behaviour differs between populations of the same species. Here we compared the foraging strategy of a pantropical seabird, the red-...

Geographical variation in the foraging behaviour of the pantropical red-footed booby

While interspecific differences in foraging behaviour have attracted much attention, less is known about how foraging behaviour differs between populations of the same species. Here we compared the foraging strategy of a pantropical seabird, the red-...

Effet de l'acidification des océans et de concentrations plus élevées en cobalt sur la croissance et l'efficacité photosynthétique de deux espèc...

Le but de cette étude était de déterminer les effets d’un enrichissement en cobalt combiné à une augmentation de la pCO2 sur la physiologie de deux espèces de coraux scléractiniaires de Calédonie, Stylophora pistillata et Acropora muric...

Structure and temporal fluctuations of two interdital seagrass-bed communities in New Caledonia (SW Pacific ocean)

The structure and trophic organisation of two intertidal seagrass-bed communities (#Halodule uninervis$ and #Thalassia hemprichii$ were examined on the South-West coast of New Caledonia (SW Pacific Ocean), from April 1989 to March 1990. Five benthic ...

Evidence for mitigation of coral bleaching by manganese

Unprecedented mass coral bleaching events due to global warming and overall seawater pollution have been observed worldwide over the last decades. Although metals are often considered as toxic substances for corals, some are essential at nanomolar co...

Comparaison des méthodes et données d’analyses acquises dans le cadre du suivi du milieu marin de Vale Nouvelle-Calédonie - campagne d'août 2012

L'OEIL a pour mission de recueillir les données environnementales produites par les industriels, de les gérer et de les interpréter. Dans un souci d'intégrité et d'objectivité l'OEIL doit également effectuer des vérifications de la qualité s...

Les coraux auscultés par des scientifiques

Le corail est un animal sensible ! Depuis plusieurs années, les maladies coralliennes s'amplifient dans l'Océan Indo-Pacifique. Les causes de ces maladies sont multiples : champignons, parasites, virus, bactéries ou changement des facteurs environ...

Effect of water exchange on effluent and sediment characteristics and on partial nitrogen budget in semi-intensive shrimp ponds in New Caledonia

An experiment was conducted in six earthen ponds with 20 shrimps m(-2) Litopenaeus stylirostris (Stimpson) during the warm season in New Caledonia to study the dynamics of wastes in relation with water exchange rate (WER). The nitrogen budget was est...

Ultra-violet radiation has a limited impact on seasonal differences in the Acropora muricata holobiont

Environmental conditions are known to influence corals and their associated communities of microorganisms. However, our insights into the impacts of seasonal changes in ultraviolet radiation (UVR) on both coral physiology and microbiome remain very l...

Trichodesmium and other planktonic cyanobacteria in New Caledonian waters (SW tropical Pacific) during an El Nino episode

Contributions of filamentous and picoplanktonic cyanobacteria to the phytoplankton community structure were examined in New Caledonian waters during the 2001-2003 El Nino period at 2 ocean stations (Loyalty Channel and Santal Bay) and 1 coral-reef la...