Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1425 résultats pour les termes de recherche: changement climatique

Affichage des résultats: 621 à 630

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L’OEIL fait équipe avec des experts de l’AFB pour un meilleur suivi des poissons d’eau douce

Un guide méthodologique standardisé à l'échelle du territoire La mission d'expertise sur le terrain, qui s'est déroulée du 14 au 23 mai 2018, constitue une première étape vers l'établissement d'un guide destiné à cadrer les inventaires de...

Rainforest and savanna landscape dynamics in New Caledonia : towards a mosaic of stable rainforest and savanna states ?

Stable forested environments can be converted to savanna in response to changes in environmental disturbances. New Caledonia is a biodiversity hotspot; significant ecological and economic resources would be lost if forests were turned into savanna by...

Old lineage on an old island : Pixibinthus, a new cricket genus endemic to New Caledonia shed light on gryllid diversification in a hotspot of biodive...

Few studies have focused on the early colonization of New Caledonia by insects, after the re-emergence of the main island, 37 Myr ago. Here we investigate the mode and tempo of evolution of a new endemic cricket genus, Pixibinthus, recently discovere...

Shift in precipitation regime promotes interspecific hybridization of introduced Coffea species

The frequency of plant species introductions has increased in a highly connected world, modifying species distribution patterns to include areas outside their natural ranges. These introductions provide the opportunity to gain new insight into the im...

L’OEIL participe à la mission pilote du collectif " LOV – milieu marin "

Un collectif de scientifiques au service du milieu marin Face aux menaces grandissantes auxquelles les écosystèmes marins exceptionnels de Nouvelle-Calédonie sont exposés et au nombre d'initiatives entreprises sur le suivi de ces milieux, des sc...

Métiers, effort and catches of a Mediterranean small-scale coastal fishery: The case of the Côte Bleue Marine Park

The overexploitation of fishery resources has led to a major fisheries crisis. In this context, artisanal fisheries, and in particular small-scale coastal fisheries, appear as relevant alternatives for a sustainable use of coastal resources. Marine P...

Effect of probiotic Pediococcus acidilactici on antioxidant defences and oxidative stress of Litopenaeus stylirostris under Vibrio nigripulchritudo ch...

Antioxidant defences and induced oxidative stress tissue damage of the blue shrimp Litopenaeus stylirostris, under challenge with Vibrio nigriputchritudo, were investigated for a 72-h period. For this purpose, L stylirostris were first infected by im...

Eutrophication in a tropical pond: Understanding the bacterioplankton and phytoplankton dynamics during a vibriosis outbreak using flow cytometric ana...

In tropical shrimp ponds, the increasing of feed input, concomitantly with the stocking shrimp biomass, induces an eutrophication of the ecosystem. Although difficult to maintain, its stability is required to guarantee the success of the culture. A 1...

Implementation of an ongoing FAD programme in Curacao (Netherlands Antilles) during the period 1993-2000

In Curacao, deep-water fads with grp surface buoys were developed and tested. The first fad was deployed in 1993. Up to now, a total of 5 fads were deployed at the following depths: 730, 685, 700, 754 and 574 metres. Changes were made to the surface ...

Enhancement of coral calcification via the interplay of nickel and urease

Corals are the main reef builders through the formation of calcium carbonate skeletons. In recent decades, coral calcification has however been impacted by many global (climate change) and local stressors (such as destructive fishing practices and ch...