Publications ENTROPIE IRD

Tropical cyclones are among the most devastating natural disasters, and the flooding they cause is responsible for over 90% of the human and material losses observed during these events.

Madagascar is renowned for its wide range of aquatic organisms, particularly crabs, octopus and fish. The latter are particularly abundant and are sold in a variety of forms (fresh, salted, smoked or dried) and sizes, ranging from large to small individua…

La sensibilisation des populations littorales est une étape clé pour favoriser la conservation et la protection des écosystèmes aquatiques, en particulier les récifs coralliens.

Technologie utilisée depuis plus de vingt ans, l'étude des fragments d'ADN laissés par les organismes dans l'environnement connaît un développement sans précédent grâce à une double révolution microélectronique et numérique.

Pour que les mesures de gestion des espaces et des espèces marines soient appropriées et appliquées, il importe de considérer les principaux acteurs concernés et les réalités locales. Les collectivités de la Nouvelle-Calédonie expérimentent différentes ap…

L'urbanisation, la surexploitation des ressources, les pollutions, la destruction des habitats et le changement climatique sont responsables de la sixième extinction massive d'espèces. Un phénomène global que les scientifiques tentent de quantifier au mie…

La pêche du crabe de mangrove est longtemps restée un secteur économique secondaire à Madagascar. Mais la situation a nettement évolué depuis 2014 avec le développement des exportations de crabes vivants vers le marché asiatique, qui ont fait bondir l'eff…

Le changement climatique s'accompagne d'une acidification et d'un réchauffement de l'océan dont l'amplification pourrait avoir des conséquences dramatiques sur les récifs coralliens.

La pêche au thon représente plus de 70 % du PIB des petits pays insulaires du Pacifique tropical Ouest et central. Or, cette activité est menacée par le réchauffement climatique qui risque de déplacer ou de réduire les populations de thons.

Les cyclones tropicaux sont parmi les risques naturels les plus dévastateurs, et les inondations qu'ils provoquent sont responsables de plus de 90 % des pertes humaines et matérielles observées lors de ces événements.

Large marine predators feeding on fish caught on fishing gear, a behaviour termed "depredation", frequently results in conflicts with significant ecological and socio-economic impacts. While adjusting fishing practices through spatio-temporal avoidance of…

Nutrient subsidies from seabirds (SDN) significantly impact coral reef ecosystems, but access to remote seabird nesting islands limits our understanding of how corals respond to this nutrient source. This study investigates the in natura effects of SDN on…

Small Pelagic Fish (SPF) exhibit large fluctuations in abundance and distribution in response to environmental variability. To maintain the resilience of fishing communities and develop effective and equitable climate adaptation strategies, improved under…

Ocean warming will affect the functioning of coral reef ecosystems with unknown cascading effects. Any perturbation in the ability of sponges to recycle the dissolved organic matter released by primary producers and make it available to higher trophic lev…

The mesophotic zone between 60 and 150 m of water depth is of increasing interest to science and management considering its biological communities, the species physiology, and the biological and physical connections with the shallower domain at a variety …

Coral recruitment is an essential demographic mechanism that underpins the community structure and dynamics of coral reefs and facilitates post-disturbance coral recovery. However, information on coral recruitment patterns in mesophotic coral ecosystems (…

The European Marine Omics Biodiversity Observation Network (EMO BON) is an initiative of the European Marine Biological Resource Centre (EMBRC) to establish a persistent genomic observatory amongst designated European coastal marine sites, sharing the sam…

>Large land and ocean mammals, like elephants and whales, play essential roles in the environment but are severely threatened by human activities. Images taken from planes can be used to spot these animals from the air. However, these species are difficul…

Deep-sea demersal fisheries in the Pacific have strong commercial, cultural, and recreational value, especially snappers (Lutjanidae) which make the bulk of catches. Yet, managing these fisheries is challenging due to the scarcity of data. Stereo-Baited R…

New Caledonia is currently seeking its future institutional framework through violent, politically-driven clashes within the population. The insurrections in May 2024, fuelled by political, and social divisions, also targeted the healthcare system in an u…

Among procellariids, the Tahiti Petrel Pseudobulweria rostrata is one of the most endangered and least known species. Its global populations are declining, yet demographic and ecological studies remain scarce. Understanding the breeding cycle and behavior…

The swift decline of coral reefs stands out as a significant biodiversity challenge confronting our generation, and mesophotic coral ecosystems (MCEs; reefs between 30 and 150 m) have been proposed as refuge habitats that may be less affected by climate c…

The semienclosed Bourake lagoon in New Caledonia is a natural system that enables observation of evolution in action with respect to stress tolerance in marine organisms, a topic directly relevant to understanding the consequences of global climate change…

The marine microbiome arouses an increasing interest, aimed at better understanding coral reef biodiversity, coral resilience, and identifying bioindicators of ecosystem health. The present study is a microbiome mining of three environmentally contrasted …

Predatory and large-bodied coral reef fishes have fundamental roles in the functioning and biodiversity of coral reef ecosystems, but their populations are declining, largely due to overexploitation in fisheries. These fishes include sharks, groupers, Hum…

Prey abundance and quality are dynamic in time and space, impacting predator ecology. We examine variation in species-specific krill quantity and quality as prey for humpback whales in the Northern California Current region, using generalized additive mod…

The susceptibility of species to habitat changes depends on which ecological drivers shape individual fitness components. To date, only a few studies have quantified fitness components such as the Lifetime Reproductive Success across multiple generations …

Geographical barriers and sea-level fluctuations have significantly influenced the population genetic structure and evolutionary history of Indo-West Pacific (IWP) reef species. This study examines these effects in Abudefduf septemfasciatus (banded sergea…

Coastal ecosystems in Pacific Island Countries and Territories are vital to local livelihoods, yet increasingly face pressures from urbanization. In Fiji, the Greater Suva Urban Area, where one-third of the nation's population live, exemplifies these chal…