Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 613 résultats pour les termes de recherche: Acidification des océans

Affichage des résultats: 211 à 220

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The Voyage of H.M.S. Challenger 1873-1876. Narrative Vol. I. First Part. Chapter I

The deep-sea investigations conducted on board H.M. Ships " Lightning," "Porcupine," and" Shearwater," in the years 1868, 1869, 1870 and 1871, and the subsequent correspondence between the Lords Commissioners of the Admiralty, the Council of the Roya...

First report of Quinqueloculina carinatatriata (Wiesner, 1923) (foraminifera) along the french atlantic coast (Marennes-Oléron bay and ile de Ré)

Large populations of the living benthic foraminifera Quinqueloculina carinatastriata (Wiesner, 1923) are reported for the first time from intertidal mudflats of the French Atlantic coast (Marennes-Oléron Bay and Ile de Ré). Maximum abundance of liv...

Logiques utilitaristes et logiques sociales : aspects de l'expansion de l'élevage bovin en milieu mélanésien de Nouvelle-Calédonie;Milieux insulai...

Les îles et archipels d'Océanie ne connaissaient pas de production marchande avant que les Européens ne s'y installent et ne les colonisent. Dans des contextes et avec des modalités variables, les formes d'organisation précoloniale - ou ce qui e...

Observations dans les zones peu accessibles de l'environnement bathyal (biologie et geologie) grace a l'usage des soucoupes plongeantes

On the bathyal slope for continental margins, steep and rocky substrates punctuated with cliffs and collapsing zones are frequently found. As survey and sampling with the classical technics from the sea surface is practically impossible in such an en...

Ongoing geographical spread of Tomato yellow leaf curl virus

Tomato yellow leaf curl virus (TYLCV) seriously impacts tomato production throughout tropical and sub-tropical regions of the world. It has a broad geographical distribution and continues to spread to new regions in the Indian and Pacific Oceans incl...

Multiple cryptic species in the blue-spotted maskray (Myliobatoidei : Dasyatidae : Neotrygon spp.) : an update

Previous investigations have uncovered divergent mitochondrial clades within the blue-spotted maskray, previously Neotrygon kuhlii (Muller and Henle). The hypothesis that the blue-spotted maskray may consist of a complex of multiple cryptic species h...

Modelling ocean-lagoon interaction during upwelling processes in the South West of New Caledonia

Since 2005, wind-driven 'sporadic' coastal upwelling events have been identified off the southwestern reef of New Caledonia. Several studies have described the main physical processes and induced surface patterns using 1D and 3D modelling, as well as...

Investigating the March 28th 1875 and the September 20th 1920 earthquakes/tsunamis of the Southern Vanuatu arc, offshore Loyalty Islands, New Caledoni...

New Caledonia's Loyalty Islands are located in the southwest region of the Pacific ocean in the highly seismogenic southern Vanuatu subduction zone and therefore may be subject to devastating local tsunamis. Over the past 150 years, two large tsunami...

Sediment transport in coastal waters

Globally, while land erosion has increased in the last decades, sediment input to the ocean has decreased. Sediment transport and distribution at the land-ocean interface has huge impacts on morphodynamics of estuaries, deltas and coastal zones, on w...

Considering reefscape configuration and composition in biophysical models advance seascape genetics

Previous seascape genetics studies have emphasized the role of ocean currents and geographic distances to explain the genetic structure of marine species, but the role of benthic habitat has been more rarely considered. Here, we compared the populati...