Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 2307 résultats pour les termes de recherche: ~riviere OR creek OR eau douce

Affichage des résultats: 811 à 820

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Temperature, selective mortality and early growth in the short-lived clupeid Spratelloides gracilis

Six cohorts of the silver-stripe round herring Spratelloides gracilis, a fast-growing and short-lived tropical clupeid, were collected as juveniles and then as adults during austral summers from November to February in 1998–1999 and 1999–2000, us...

Earliest Eocene (53 Ma) convergence in the Southwest Pacific; evidence from pre-obduction dikes in the ophiolite of New Caledonia.

Uncertainty about timing and location of the initiation of convergence in the western and south western Pacific greatly hinders accurate plate tectonic reconstructions of subduction systems in that area. The chemistry and age of dikes intruding mantl...

Different surveys provide similar pictures of trends in a marine fish community but not of individual fish populations

Choice of sampling method and survey period can have an important impact on the perception of the structure and dynamics of an ecological community. For the Celtic Sea fish assemblage we compared data obtained by three different trawl surveys: an aut...

Acquisition of susceptibility to Vibrio penaeicida in Penaeus stylirostris postlarvae and juveniles

Vibriosis is a major disease problem in shrimp aquaculture, affecting all developmental stages, from larvae in hatchery tanks to juveniles and broodstock in growout ponds. However, bacterial strains responsible for vibriosis in the successive stages ...

Molecular characterization reveals the complexity of previously overlooked coral-exosymbiont interactions and the implications for coral-guild ecology

Several obligate associate crabs and shrimps species may co-occur and interact within a single coral host, leading to patterns of associations that can provide essential ecological services. However, knowledge of the dynamics of interactions in this ...

Autorités coutumières et réformes foncières : propriété, coutume, souveraineté;La formalisation des droits sur la terre : bilan des expérience...

La notion de formalisation se situe au coeur des dispositifs visant à réformer et réguler les formes d'accès, d'usage et de contrôle des ressources foncières. Les réformes foncières manipulent toutes des outils de formalisation, mais selon de...

Seabirds supply nitrogen to reefbuilding corals on remote Pacific islets

Seabirds concentrate nutrients from large marine areas on their nesting islands playing an important ecological role in nutrient transfer between marine and terrestrial ecosystems. Here we investigate the role of guano on corals reefs across scales b...

Updating the phylogenetic dating of New Caledonian biodiversity with a meta-analysis of the available evidence

For a long time, New Caledonia was considered a continental island, a fragment of Gondwana harbouring old clades that originated by vicariance and so were thought to be locally ancient. Recent molecular phylogenetic studies dating diversification and...

New Caledonian Piliocalyx transferred to Syzygium (Myrtaceae) with an updated conspectus of the species

Members of Piliocalyx Brongn. and Gris (Myrtaceae) from New Caledonia are transferred to, or given new names in, Syzygium Gaertn., including : Syzygium baudouinii (Brongn. and Gris) N. Snow, Byng and J.W. Dawson, Syzygium bullatum (Brongn. and Gris) ...

Influence of settings management and protection status on recreational uses and pressures in marine protected areas

Coastal populations and tourism are growing worldwide. Consequently outdoor recreational activity is increasing and diversifying. While Marine Protected Areas (MPAs) are valuable for mitigating anthropogenic impacts, recreational uses are rarely moni...