Publications ENTROPIE IRD

The genetic connectivity between different pearl oyster (Pinctada margaritifera) populations from the pearlfarming Ahe atoll lagoon (Tuamotu Archipelago, French Polynesia) was reassessed 8 years after an initial study performed in 2017. The 2017 genomic a…

Marine heatwaves (MHWs) can have devastating and lasting impacts on marine ecosystems. We investigated past MHW characteristics around 12 southwestern Pacific Island countries and territories (PICTs) using two observed sea surface temperature products and…

Pressures and threats to shallow-water coral reefs have intensified over the last decades. The 'Deep Reef Refuge' Hypothesis (DRRH) postulates that Mesophotic Coral Ecosystems (MCEs) may be protected from these pressures and threats and could provide larv…

Aim: The last decades have been marked by a global decline of many migratory species, and predictions are even more alarming when climate change is considered. We investigated the migration patterns and marine habitat selection processes of a critically e…

Marine heatwaves (MHWs) are intensifying with climate change, endangering ecosystems such as coral reefs. Yet their regional characteristics and drivers remain poorly understood in many parts of the Pacific. Here we provide a comprehensive assessment of M…

Social context is a critical yet underexplored determinant of behavioural resilience to climate change. Group living can buffer individuals against environmental stress through enhanced vigilance, reduced predation risk and improved foraging efficiency. H…

Marine heatwaves (MHWs) are increasingly studied in climate sciences for their ecological impacts, for which accurate real-time bulletins and forecasts are essential. Yet, methodological choices in their detection affect metric estimates, underlining the …

Le pôle ODATIS de l'IR Data Terra publie son rapport d'activités 2025, qui synthétise les activités et les actions menées durant l'année passée à l'échelle du pôle, de ses Centres de Données et Services et au travers de son implication dans différents p…

The atlas presented in this work analyses the challenges of climate change for agri-food systems, first through the lens of (1) greenhouse gas emissions, then (2) the impacts of climate change on the land sector, followed by (3) the ques- tion of the e…

Coral reefs are among the most diverse and productive ecosystems on the planet, providing goods and services to millions of people. Yet, they are threatened by a combination of natural and anthropogenic disturbances, which are increasing in both frequency…

Giant clams (Tridacna maxima) are abundant in French Polynesia semi-closed atolls, but the sustainability of the ecosystem services they provide has been challenged by recent mass bleaching events. Being able to accurately anticipate the risks of bleachin…

Toothed whale depredation of fish caught on fishing gear raises socioeconomic and conservation concerns. It can lead to substantial losses for fishers and impacts on depredating species, but effective solutions remain limited. In this study, we implemente…

Significant efforts have been made to describe the diversity of the sponge class Homoscleromorpha across various oceanic regions, yet the Tropical Eastern Atlantic remains largely unexplored. The insular nature and volcanic origin of the Cape Verde archip…

Small-scale fisheries across the Pacific, particularly in Vanuatu, are multi-species, multi-geared, and span multiple coastal habitats. This diversity and variability extends into associated trade and distribution systems that move fish from relatively fe…

Coral reef monitoring often relies on indicator species to reflect ecological conditions across habitats, yet existing identification methods such as IndVal and TWINSPAN vary widely in the number and identity of the taxa they select. Here, we compare thes…

Extreme climatic events and gradual climate change are increasingly anticipated to interact and reshape ecological communities. However, the combined effects of ocean warming, acidification and marine heatwaves on host-associated microbial communities and…

Ocean warming is driving species range extensions into cooler regions. The direct physiological influence of warming on species performance can accelerate such extensions into novel ecosystems; however, indirect effects of invader-resident interactions in…

Marine Protected Areas (MPAs) are a cornerstone of global marine biodiversity conservation strategies, yet their effectiveness remains highly variable, context-dependent, and often contested. While various methods can be used to assess the effectiveness o…

Dengue virus (DENV) is a major public health concern in tropical and subtropical regions, including the Pacific. Temperature is recognised as a major driver of transmission under climate change. Understanding how higher temperatures may alter DENV transmi…

Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species' vulnerability to each threatmust first be determined. We build on the existing threats classification scheme and ranking system …

Micronekton are mid-trophic marine organisms characterized by a size range of 2 to 20 cm, gathering a wide diversity of taxa (crustaceans, fish, molluscs). They are responsible for an important active carbon export to the deep ocean because of their diel …

The effects of climate change are hindering the ability of the world to achieve the Sustainable Development Goals (SDG) by 2030. In particular, the success of SDG 2 (Zero hunger) is threatened by the impacts of climate change on global food production, le…

Environmental DNA (eDNA) metabarcoding is an innovative tool that is transforming ecological research. It offers a simple and effective method for simultaneously detecting numerous species across a wide range of environments. The method relies on assignin…

The blue economy agenda has generated tensions over marine space use, often marginalising small-scale fisheries in development policies. Boat tracking technology has only recently begun to be applied in these fisheries, but it offers a promising approach …

Incorporating meaningful social and economic information into conservation planning is challenging but critical to minimizing impacts of conservation actions on livelihoods and increasing the likelihood of compliance with restrictions on resource use. The…

Marine ecosystems are increasingly threatened by overfishing, pollution, coastal development and climate change, underscoring the need for long-term, representative information on key fish populations and habitats to inform management and policy. Underwat…

Freshwater ecosystems on tropical oceanic islands host unique biodiversity. On Réunion Island, freshwater decapod crustaceans are key indicators of ecosystem health, yet their distribution and conservation status remain poorly documented. This study aimed…

Coral reefs are vital social-ecological systems, but highly vulnerable to global change and local stressors. While conveying the urgency of existential threats is paramount, bleak outlooks can become self-reinforcing, limiting capacities to act. To counte…

The participation of stakeholders in the design of fisheries policy instruments has emerged worldwide as good governance practice. Their participation is expected to ensure that policies are context-specific, address local needs and ecological realities, …

The ocean is essential for humanity1, 2-3. Yet, inequity in ocean-based activities is widespread and accelerating4, 5, 6, 7-8. Addressing this requires governance approaches that can systematically measure equity and track progress9. Here we present the O…