Observatoire de l'environnement Nouvelle Calédonie

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

Affichage des résultats: 71 à 80

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Chromis durvillei : une nouvelle espèce de Pomacentridae de l’île de la Réunion (France, océan Indien) et premier signalement pour l’île de C...

Following the volcanic eruption of April 2007 at Reunion Island, 12 specimens of the pomacentrid genus Chromis were collected at sea surface. One of these fishes was a C. chrysura known from the reef Island fauna. The others have enlarged eyes. Among...

Nd isotope constraints on ocean circulation, paleoclimate, and continental drainage during the Jurassic breakup of Pangea

The breakup of Pangea and onset of growth of the Pacific plate led to several paleoenvironmental feedbacks, which radically affected paleoclimate and ocean chemistry during the Jurassic. Overall, this period was characterized by intense volcanic dega...

Age estimation and growth of some deep-sea fish from the northeast Atlantic ocean

Age is a necessary parameter used in population dynamics to assess the state of exploited resources. This parameter is poorly known for most deep-sea species (depth > 400 m). This work focused on age estimation from otoliths of Alepocephalus bairdii ...

The Percy Sladen Trust expedition to the Indian ocean in 1905 - Vol. 8

This paper deals with the CIIDAE* collected by the Percy Sladen Trust Expedition to the Indian Ocean under Professor J. Stanley Gardiner, F.R.S., in 1908-9. Twenty species of these beetles were obtained, eighteen in the Seychelles only, one in both t...

An updated checklist of the marine fish fauna of Reunion Island, South-Western Indian Ocean

The ichthyofauna of Reunion Island, Southwestern Indian Ocean, was sampled during several ecological and artisanal fisheries studies. Information from these investigations and from other sources were included to compile the present checklist of the m...

L'élévation récente du niveau marin et l'érosion côtière : le cas d'îles océaniques du Pacifique

Le changement climatique induit une élévation du niveau marin qui, loin d'être uniforme, présente une variabilité régionale importante liée en premier lieu aux variations de température des océans. Dans certaines régions de l'océan, cette ...

Notes on the biology of the bigeye scad, Selar crumenophthalmus (Carangidae) around Reunion Island, southwest Indian Ocean

The main characteristics of the biology of bigeye scad were studied from commercial fishery catches around Reunion Island. Biometric relationships were calculated. The monitoring of size distribution, aggregated by month, allowed us to estimate the t...

N-2 fixation as a dominant new N source in the western tropical South Pacific Ocean (OUTPACE cruise)

We performed nitrogen (N) budgets in the photic layer of three contrasting stations representing different trophic conditions in the western tropical South Pacific (WTSP) Ocean during austral summer conditions (FebruaryMarch 2015). Using a Lagrangian...

Determining the age of tropical tunas in the Indian Ocean from otolith microstructures

The Indian Ocean Tuna Tagging Program (IOTTP) provided a unique opportunity to assess the viability of estimating the age of tropical tunas from the micro-structural features of otoliths. Here, we analyzed the length measurements and micro-increment ...

Bio-optical characterization and ocean colour inversion in the Eastern Lagoon of New Caledonia, South Tropical Pacific

The Eastern Lagoon of New Caledonia (ELNC) is a semi-enclosed system surrounded by an extensive coral reef barrier. The system has been suffering impacts from climate variability and anthropogenic activities, including mining exploitation. Satellite ...