Observatoire de l'environnement Nouvelle Calédonie

Il y a environ 615 résultats pour les termes de recherche: Acidification des océans

Affichage des résultats: 211 à 220

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Les fonds marins vus de l'espace

This text is focused on the popularization of the general public, edited in a magazine connected to the sea. It explicits, in first part, all the factors which make that the surface of the sea is not horizontal. In second part are introduced the prin...

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...

Activité magmatique, tectonique et hydrothermale actuelle sur la Dorsale Est Pacifique entre17°-et 19°S(campagne NAUDUR)

The submersible-study of four segments of the East Pacific Rise between 17 degrees and 18 degrees 40'S, where the spreading rate is greater than 150 mm/a, allows us to confirm the variability of the accretion processes. The segment between 17 degrees...

Les énergies marines renouvelables : qu'est-ce que c'est ? Quelles perspectives en Nouvelle-Calédonie.

This text presents a review of the various technologies for exploitation of renewable marine energy resources. Il exposes the solutions offered by tide and currents, swell and waves, the marine wind energy, the Ocean Thermal Energy, the osmotic energ...

Small-scale FADs-associated fishing techniques used in the Pacific region

Over the last 16 years, the Secretariat of the Pacific Community (SPC - formerly the South Pacific Commission) has been developing and providing information on mid-water fishing techniques targeting the larger, deeper-swimming tunas that aggregate ar...

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...

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...

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...

Biomasse phytoplanctonique NIMBUS 7/CZCS dans les archipels de Nouvelle Calédonie et du Vanuatu = Phytoplanctonic biomass from NIMBUS 7/CZCS in New C...

L'étude des effets d'îles sur la richesse en phytoplancton océanique dans le Pacifique tropical Sud Ouest a déjà été abordée par les chercheurs ORSTOM, tout d'abord de façon statistique et à grande échelle dans tout le PTSO, avec les donnÃ...

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...