Publications ENTROPIE IRD

Spanning 1.3 million square kilometres, the Natural Park of the Coral Sea ranks among the largest marine protected areas on Earth. A true sanctuary of biodiversity, it harbours virtually untouched coral reefs, around 20 remote islets, and a vast expanse o…

Marine functional connectivity underpins biodiversity and ecosystem functions, ensuring resilience in marine and land-sea interface ecosystems. Research on this topic has advanced rapidly in recent decades, as reflected in the growing body of primary lite…

Since 2007, presence of mapiko and beaches of natural detrital accumulations composed mainly of giant clam valves are legal criteria to formally identify atoll lagoons where giant clam mariculture should be ecologically sustainable and authorized in the E…

The ubiquity of microplastics in the marine environment has been highlighted in recent years, yet the extent of microplastic pollution in coastal areas, especially off the coast of Japan, remains unclear. Here we provide a comprehensive data set of microp…

While the seaweed industry is developing worldwide, the untapped diversity of species in New Caledonia offers many opportunities for value-added products that can stimulate the local blue economy. However, human activities and the particular geology of th…

Madagascar harbors a rich marine biodiversity, yet detailed knowledge of its fish species remains limited. Of the 1689 species listed in 2018, only 22% had accessible cytochrome oxidase I (COI) sequences in public databases. In response to growing pressur…

The skin microbiome plays a vital role in the health of marine mammals, serving as a protective barrier and interacting with the host's immune system. There is limited knowledge about the skin microbiome of dugongs (Dugong dugon), a vulnerable species wit…

The recent Kunming-Montreal Global Biodiversity Framework (GBF) sets ambitious goals but no clear pathway for how zero loss of important biodiversity areas and halting human-induced extinction of threatened species will be achieved. We assembled a multi-t…

Mass coral bleaching events are increasing in severity and frequency globally. In 2023, the wider Caribbean region experienced the longest period of marine heatwave ever recorded. Twelve sites around Martinique island, Eastern Caribbean, were surveyed in …

Each austral summer, tropical cyclones (TCs) threaten South Pacific Island nations, causing potential socioeconomic impacts. Located on the eastern edge of the South Pacific convergence zone, French Polynesia (FP) faces highly variable cyclone exposure, e…

Mesophotic coral ecosystems (MCEs), occurring between 30 and 150 m depth, are increasingly recognized for their ecological importance, yet they remain underexplored, particularly in the southwestern Indian Ocean. During benthic surveys conducted at depths…

Entanglements in fishing gear are a significant threat to cetaceans worldwide and a concern for large whales in US waters. Yet, entanglement events are infrequently observed, and their lethal and sublethal impacts are likely underestimated. Photographic a…

Aim The variety of coral taxa and environmental cues triggering broadcast spawning gave rise to contrasting theories about coral reproduction synchrony. Here, we shine a new light on this synchrony across oceans by highlighting how environmental cues modu…

Pacific islands are exposed to coastal hazards, particularly storm surges resulting from low pressure, extreme winds, and waves. While coral reefs naturally protect shorelines from incident waves, the diversity of reef geomorphologies induce various coast…

Despite their drastic impacts on coral reefs, outbreaks of the coral-feeding seastar crown-of-thorns starfish (COTS), Acanthaster, have remained a scientific enigma. Significant efforts in coral reef conservation science have been dedicated to identifying…

Les récifs coralliens sont les écosystèmes hébergeant la plus forte biodiversité de la planète et sont essentiels pour des millions de personnes à travers le monde. Cependant, sous l'action des effets du changement climatique et de diverses perturbations …

Marine plastic pollution is increasing in the world's ocean, with the Indian Ocean understudied compared to the Pacific and Atlantic Oceans. This study investigates plastic pollution in the Southwest Indian Ocean, focusing on a size range from large debri…

Sleep is a vital and universal behavior distinct from mere inactivity, yet its ecological role remains poorly understood due to methodological limitations in recording sleep in the wild. Using a small, low-power biologger, collecting brain activity, body …

Like many other islands in the Pacific and beyond, New Caledonia struggles with coastal erosion and marine flooding. How communities adapt to such erosion depends in part on media reporting. We therefore here examine coastal erosion in New Caledonia throu…

On shallow rocky and coral reefs, cultural and recreational values, like aesthetics, are critical aspects of Nature's Contributions to People (NCP) that support human well- being and provide billions of dollars in tourism revenue. Quantifying the aestheti…

Size-spectra and taxonomic diversity are important indicators to study the dynamics of communities and to inform conservation in aquatic ecosystems. To date, few studies aimed at modelling the distribution of reef fish diversity at small spatial scales (s…

Shark bites can cause substantial socio-economic and ecological challenges, including debates about bite-mitigation policies, economic impacts for tourism-dependent communities, and increased fear among beachgoers. The growing frequency of shark bites glo…

El Niño-Southern Oscillation (ENSO) is the primary driver of global climate interannual variability, with El Niño and La Niña events disrupting atmospheric and oceanic conditions worldwide. These events form an 'ENSO continuum,' from central Pacific to ea…

Unprovoked shark bites are increasing globally. Regional hotspots like Nouméa show rising incidents involving bull sharks (Carcharhinus leucas) and tiger sharks (Galeocerdo cuvier), leading to the culling of these protected species. Identifying high-risk …

Metabolomics is a powerful approach to investigate the effect of environmental conditions on metabolite variations in marine algae. Here, we focused on crustose coralline algae (CCA), a group of calcifying, red algae which play an important role on coral …