Publications ENTROPIE IRD

We re-evaluated the diversity of Lobophora using an integrative taxonomic approach based on a broad sampling across French Polynesian archipelagos. Our results show that French Polynesia supports at least 37 Lobophora species of which similar to 57% (21) …

This study explored the unknown biodiversity of mesophotic coral ecosystems (MCEs) in Reunion Island, located in the Southwestern Indian Ocean. MCEs are still largely unexplored whereas they are assumed to shelter a rich and unique biodiversity. As they m…

Facing an alarming continuing decline of wild sea cucumber resources, management strategies were developed over the past three decades to sustainably promote development, maintenance, or regeneration of wild sea cucumber fisheries. In New Caledonia (South…

The Tahiti petrel (Pseudobulweria rostrata) is a rare and declining seabird whose breeding biology and nest-site selection are poorly known. Nest-site selection is critical to seabird population fitness, and understanding the factors driving it is essenti…

Thus far, no long-term in situ observation of planktonic biomass have been undertaken to optimize the black-lip pearl oyster aquaculture in the remote Tuamotu atolls. The feasibility of using data from the OLI sensor onboard Landsat-8 satellite to determi…

Reef fishes are closely connected to many human populations, yet their contributions to society are mostly considered through their economic and ecological values. Cultural and intrinsic values of reef fishes to the public can be critical drivers of conse…

We investigated the globally distributed red algal genus Pterocladiella, comprising 24 described species, many of which are economically important sources of agar and agarose. We used DNA-based species delimitation approaches, phylogenetic, and historical…

Recruitment processes largely drive spatial distributions, dynamics, and recovery potential of marine communities. Determining scales of variation in recruitment rates and composition can help in understanding population replenishment mechanisms, while id…

New Caledonia is home to one of the largest remaining populations of dugongs (Dugong dugon) and is located at the southeastern limit of the species range. Local knowledge suggests that current levels of removal due to anthropogenic pressures are unsustain…

The crucial role of crustose coralline algae (CCA) in inducing hard coral larval settlement and ensuring the replenishment of coral reefs is widely accepted, and so are the negative effects of anthropogenic CO2 emissions on both CCA abundance and coral de…

French Polynesia atolls are spread on a vast 2300 by 1200 km Central Pacific Ocean area exposed to spatially and temporally dependent wave forcing. They also have a wide range of closed to open morphologies and several have been suitable to develop from b…

Isolated coral reef habitats are unique systems to study the natural dynamics of coral traits and their natural acclimatization, adaptation, and recovery from globalscale stressors such as thermally induced bleaching events. This study evaluates the spati…

This editorial presents results of the MANA (MANagement of Atolls) project compiled in the form of a Marine Pollution Bulletin collection of 14 articles. MANA is a project funded by the French Agence National pour la Recherche that specifically addresses …

Amidst global environmental changes, predicting species' responses to future environments is a critical challenge for preserving biodiversity and associated human benefits. We explored the original idea that coral competitive performances, the ability of …

Leptospirosis is a neglected waterborne zoonosis of growing concern in tropical and low-income regions. Endemic in Southeast Asia, its distribution and environmental factors such as climate controlling its dynamics remain poorly documented. In this paper,…

Le "Guide pour le suivi de la qualité du milieu marin en Nouvelle-Calédonie" a été édité pour la première fois en 2011. Cet ouvrage, à vocation didactique et multiutilisateur nécessitait d'être actualisé pour intégrer les récentes évolutions en termes de …

Acacia spirorbis subsp. spirorbis Labill. is a widespread tree legume in New Caledonia that establishes mutual symbioses with both N2-fixing rhizobia and ectomycorrhizal (ECM) fungi. Moreover, A. spirorbis is able to naturally grow on ultramafic soils, ch…

Communicating new scientific discoveries is key to human progress. Yet, this endeavor has been increasingly hindered by monetary restrictions that restrain scientists from publishing their findings and accessing other scientists' reports. This process is …

Contexte et objectifs. Nous présentons une série de cas d'attaques de requins survenues en Nouvelle-Calédonie, destinée à proposer aux usagers du milieu marin concernés et aux autorités en charge de la sécurité du public un état des lieux de cette problém…

La mer de Corail héberge une grande partie de la population mondiale de Puffins du Pacifique Ardenna pacifica ; les quelques dizaines d'îlots coralliens du lagon sud-ouest de la Nouvelle-Calédonie en abriteraient 470 000 couples reproducteurs. La Nouvelle…

La population d'orques fréquentant la mer de Corail est mal connue. Les objectifs de ce travail sont de présenter les observations d'orques faites ces trois dernières décennies au large de la Nouvelle-Calédonie, d'examiner le pattern temporel d'occurrence…

Les premiers signalements d'otaries à fourrure de Nouvelle-Zélande Arctocephalus forsteri en Nouvelle-Calédonie dans les années 1970 ont été vus comme le fait d'individus "égarés" ou "vagrants". Les observations d'otaries à fourrure rapportées dans la pre…

Madagascar is a marine biodiversity hotspot. A recent checklist recorded 1689 marine or transitional water fish species, 2.5% being endemic. To date, studies in this country were mostly focused on adult fishes using morphological-based identification. The…

Ecological surveys of coral reefs mostly rely on visual data collected by human observers. Although new monitoring tools are emerging, their specific advantages should be identified to optimise their simultaneous use. Based on the goodness-of-fit of linea…

Nowadays, ecological restoration is considered the best solution for the rehabilitation of mining-degraded areas, particularly when it concerns valuable ecosystems. This is the case in New Caledonia, a hot spot of biodiversity, with 82% of endemic plant s…

Extreme reef environments have become useful natural laboratories to investigate physiological specificities of species chronically exposed to future-like climatic conditions. The lagoon of Bourake in New Caledonia (21 degrees 56 ' 56.16 ' S; 125 degrees …

Sponges are major components of benthic communities across the world and have been identified as potential "winners" on coral reefs in the face of global climate change as result of their tolerance to ocean warming and acidification (OA). Previous studies…

Among animal species, the songs of male humpback whales (Megaptera novaeangliae) are a rare example of social learning between entire populations. Understanding fine-scale similarity in song patterns and structural features will better clarify how accurat…

Oyster farming for black pearl production is central in French Polynesia. It is the second source of national income and provides substantial job opportunities, notably in remote atolls. However, this sector has been undermined by successive crises, such …

Study region: Six watersheds of the main island of New Caledonia.& nbsp;Study focus: In the context of a projected reduction of extreme precipitation events by ~ 20% by 2100 combined to large land cover variability, a distributed hydrological approach was…