Publications ENTROPIE IRD

The green algal genus Caulerpa is known for high levels of morphological plasticity and cryptic diversity, rendering morphology-based identifications unreliable. The present study assessed the Caulerpa species diversity in the Central Indo-Pacific realm (…

Coastal ecosystems, located at the intersection of land and sea, are subject to multiple humaninduced stressors that affect both terrestrial and marine environments. Among the 12 core priorities of global policies and biosphere monitoring efforts, eutroph…

In French Polynesia, the pearl oyster Pinctada margaritifera has allowed black pearl production since four decades. The production remains dependent on spat collections in atoll lagoons. Through their reproduction, the oysters of the natural stock are con…

Ocean acidification, driven by rising atmospheric carbon dioxide levels, has impacts on marine ecosystems. While elevated carbon dioxide concentrations have the potential to enhance Blue Carbon fixation and storage, the response of community photosynthesi…

Giant clams (Tridacninae) are a key component of coral reef ecosystems and a major economic, subsistence, and cultural resource for Pacific Island communities. In New Caledonia where stocks are declining but giant clams retain an emblematic status, coasta…

Simple Summary Coral reefs host both corals and macroalgae (seaweeds) that often live in close contact. While these interactions are well studied on degraded reefs, much less is known about how they occur in healthy reef systems. We surveyed macroalgal-co…

Numerous studies have been conducted on the benthic stages of Medusozoa in Reunion Island, but none on the pelagic stages. This study is the first to investigate the shallow waters of the island for the diversity, abundance, and spatio-temporal distributi…

To date less than 5% of shark species have nuclear reference genomes, despite next-generation sequencing advances. Particularly for threatened shark species, there is a lack of reliable genomes which are crucial in facilitating research and conservation a…

Arthrospira platensis extract is incorporated into sunscreen formulations for its beneficial and UV-protective properties on cultured human cells. However, its effects have not yet been assessed on non-target organisms such as endosymbiotic microalgae in …

Potentially human pathogenic bacteria (PHPBs) have been detected in plastic-associated marine microbiomes, primarily through DNA-based methods. However, data on their culturability and concentrations on plastics remain limited, yet are essential to assess…

Environmental DNA metabarcoding (eDNA) is emerging as a pivotal tool for assessing and monitoring marine biodiversity, exhibiting significant promise for the detection of marine mammals. The primary objective of this study was to evaluate various protocol…

While the rise in global ocean temperature continues its course, reaching 1.45 +/- 0.12 degrees C above pre-industrial level according to the World Meteorological Organization in 2023, marine heatwave frequencies and intensities increase. Consequently, co…

Understanding the processes that maintain coral assemblages is of crucial importance given increasing rates of coral mortality on reefs globally. Here, we compared relationships among distribution patterns of recruit, juvenile, and adult corals with disti…

The development of a spatial index that can be used to represent the benthic ecological state of coral reefs is essential for guiding public conservation policies. We propose the spatialization of a new index of "benthic ecological state" using the Coral …

In the context of coral reef decline, mesophotic coral ecosystems (MCEs, 30-150 m) offer hope for the recovery of degraded euphotic reefs. The Deep Reef Refuge Hypothesis (DRRH) postulates the potential of mesophotic reefs to reseed euphotic reefs. This h…

Foraging is a key function in the animal kingdom. Foraging in groups drives food patch discovery through social information transfer that maximizes an individual's foraging success through either cooperation or competition in response to congener presence…

Context Historically, humpback whales migrating past Aotearoa New Zealand (NZ) were linked to western South Pacific wintering grounds and Antarctic feeding grounds. As populations have recovered, research has focused on contemporary connectivity patterns …

Fishers' spatial knowledge encompasses a diverse array of social, ecological, technical, experiential, and learning knowledge derived from local environmental and sociocultural contexts. In this study, we used a transdisciplinary framework to shed light o…

Coastal marine megafauna faces increasing threats from habitat degradation, climate change, and human activities, making conservation efforts crucial for their survival. The New Caledonian dugong population was reclassified as Endangered on the IUCN Red L…

La présente note a pour objectifs de synthétiser les données acquises lors de missions ornithologiques effectuées au cours des cinq dernières décennies sur l'île Walpole, d'identifier les menaces avérées ou potentielles sur son avifaune marine et de p…

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…