Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 1475 résultats pour les termes de recherche: E. Coli OR Escherichia coli

Affichage des résultats: 971 à 980

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Epibator insularis, a new species of scincid lizard from l'Ile Walpole, New Caledonia

A new species of skink in the genus Epibator is described from Ile Walpole, a small, isolated, raised vegetated limestone platform, similar to 200 km ESE of southern New Caledonia. The new species is distinguished from its congeners Epibator nigrofas...

Contrasted ecological niches shape fungal and prokaryotic community structure in mangroves sediments

Mangroves are forest ecosystems located at the interface between land and sea where sediments presented a variety of contrasted environmental conditions (i.e. oxic/anoxic, non-sulfidic/sulfidic, organic matter content) providing an ideal ecosystem to...

Étude du caractère invasif de quelques espèces animales et végétales introduites dans les milieux dulçaquicoles en Nouvelle-Calédonie

Étude concernant quelques espèces exotiques à caractère envahissant des milieux dulçaquicoles. Elle tente de comprendre les impacts de ces espèces sur les écosystèmes et d'en contrôler la dispersion. Il s'agit des plantes Eichornia crassipes...

Population dynamics in some rainforests on ultramafic soils in New Caledonia and their impact on patterns of canopy richness;Deuxième conférence int...

Permanent plots are being established in monodominant and mixed rainforests over a range of altitudes on ultramafic soils in New Caledonia to investigate the factors determining canopy richness. Initial studies are examining the dynamics of the major...

Isotopic records from archeological giant clams reveal a variable climate during the southwestern Pacific colonization ca. 3.0 ka BP [Plus Corrigendum...

The Lapita colonization,which occurred in the late Holocene, is one of the most remarkable prehistorical human colonizations. To explore the possible influence of El Niño–Southern Oscillation (ENSO) on this event, bulk oxygen (δ18Oshell) ...

Assessing the design and power of capture-recapture studies to estimate demographic parameters for the Endangered Oceania humpback whale population

Capture-recapture studies offer a powerful tool to assess abundance, survival and population rate of change (lambda). A previous capture-recapture study, based on DNA profiles, estimated that the IUCN-listed Endangered Oceania population of humpback ...

Goethite aging explains Ni depletion in upper units of ultramafic lateritic ores from New Caledonia

An upward loss of Ni is commonly reported in the oxide-rich unit of Ni-laterite deposits developed over ultramafic rocks in tropical regions, especially in freely drained and deeply weathered regoliths. Because goethite is the major mineral constitue...

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 ...

Xestospongin B, a competitive inhibitor of IP3-mediated Ca2+ signalling in cultured rat myotubes, isolated myonuclei, and neuroblastoma (NG108-15) cel...

Xestospongin B, a macrocyclic bis-1-oxaquinolizidine alkaloid extracted from the marine sponge Xestospongia exigua, was highly purified and tested for its ability to block inositol 1,4,5-trisphosphate (IP3)-induced Ca2+ release. In a concentration-de...

Economic valuation of ecosystem services from coral reefs in the South Pacific : taking stock of recent experience

The economic valuation of coral reefs ecosystem services is currently seen as a promising approach to demonstrate the benefits of sustainable management of coral ecosystems to policymakers and to provide useful information for improved decisions. Mos...