Ifremer

A method to assess wind and wave extreme statistics at offshore wind farms exposed to tropical and extratropical cyclones

Abstract. Offshore wind turbines deployed in tropical-cyclone-exposed regions require reliable estimates of extreme wind and wave conditions for structural design. Existing engineering practices often rely on different methodologies for wind and wave assessments, resulting in des...

The geometry of gametic dispersal in a flying mammal, Rhinolophus hipposideros

Abstract Dispersal influences population and evolutionary dynamics, in a manner that depends on by which dispersal strategies gene flow occurs. In some species, mating partners move exclusively for mating, dispersing genes but not individuals. This is the case in many bat species...

Protocol for integrative transcriptomic/metabolomic analysis: A case study on factors influencing the oyster-POMS disease

Deciphering the molecular mechanisms underlying complex biological interactions requires comprehensive approaches that capture these interactions across multiple regulatory and functional levels. Here, we present a protocol applied to the host-pathogen-environment interactions un...

Estimating isotopic turnover rates using DEB theory

The isotopic turnover rate (λ) quantifies the rate at which an organism’s tissues are renewed. It is a key parameter in dietary studies as it governs predator-prey dynamics and by extension the broader food web. However, λ has historically been difficult to estimate, typically re...

From genetics to migration: emerging insights into salmonid responses to environmental change from NoWPaS 2026

The International Workshop of PhDs and Post-doctoral Fellows on Anadromous Salmonids (NoWPaS) provides a platform for early-career researchers to present and discuss emerging research on salmonid biology. The 2026 meeting, held in Iceland, brought together contributions spanning...

Projecting Impacts of Marine Heatwaves and Their Effects on Long‐Term Changes in Marine Ecosystems Over the 21st Century

ABSTRACT Marine heatwaves (MHWs) are increasing in frequency, duration and intensity under climate change. Although current MHWs trigger broad ecological impacts, such as coral bleaching, mass mortality of seagrass meadows, and declines in important fish stocks, the cascading eff...

Post-disturbance temperate reef states influence fish contributions to nature and people

Abstract Background Climate-driven habitat reorganization is reshaping the capacity of marine ecosystems to sustain biodiversity and human well-being, with implications for SDG 14 (Life Below Water) and SDG 2 (Zero Hunger). Yet, it remains unclear to what extent post-disturbance...

Amphipods associate with epibiotic filamentous bacteria at a shallow-water hydrothermal vent

In the deep ocean, hydrothermal vents sustain remarkable animal-microbial symbioses, in which bacteria colonizing animal external or internal tissues use reduced chemicals from venting fluids to perform chemosynthesis and nourish their host. Hydrothermal vents also occasionally o...

Human pressure, habitat heterogeneity and species traits jointly determine the level of dark diversity in coastal fish communities

Understanding how anthropogenic pressures and environmental gradients shape coastal fish communities is a central question in biogeography and marine conservation. Yet, the set of species expected to occur at a site given ecological conditions but being absent – the so‐called dar...

Wet granular bed eroded by a dry granular flow

Using three-dimensional discrete element method simulations, we investigate the erosion dynamics of a cohesive bed composed of wet spherical particles subjected to the shear flow of an overlying noncohesive granular layer. Cohesion is modeled through a capillary attraction law, w...

Performances of common UV disinfection processes for biosecurity in shellfish hatcheries holding tetraploid Pacific oysters

Aquaculture today must meet the objectives of sustainable development. To avoid the dissemination of the tetraploid material from Magallana gigas cupped oysters, used in shellfish hatcheries for the production of triploid oysters, the producers must ensure biosecurity of their ef...

Shipping noise may trigger valve closure responses in exploited scallop beds of the Gulf of St. Lawrence

Shipping noise is a pervasive form of underwater noise pollution, yet its effects on benthic invertebrates remain poorly integrated into spatial risk assessments. The Atlantic sea scallop (Placopecten magellanicus), a benthic bivalve supporting the world's largest wild pectinid f...

Multiomics reprogramming reverses disease susceptibility in Magallana gigas during aging

Aging is a progressive and irreversible biological process that typically increases susceptibility to infectious diseases. However, unexpectedly, the opposite outcome was observed in oysters: older oysters exhibit increased tolerance to Pacific oyster mortality syndrome (POMS), a...

Valorization of Beach-Cast Biomass from the Invasive Seaweed Rugulopteryx okamurae on the Moroccan Coast: A Comparative Assessment of Extraction Conditions for Sodium Alginate Recovery

Rugulopteryx okamurae is an aggressively invasive seaweed whose proliferation along the Moroccan coastline represents both an ecological problem and an underexploited source of biomass. This work highlights the isolation of sodium alginate from R. okamurae under four combinations...

Insight into OsHV-1 persistence phase in Pacific oyster spat

The ostreid herpesvirus type 1 (OsHV-1) is a major pathogen of the Pacific oyster (Magallana gigas), causing recurrent episodes of spat mortality worldwide. While OsHV-1 replication and associated outbreaks occur at moderate seawater temperatures (16-22 °C), the virus becomes lar...

Optimising bat-friendly curtailment algorithms for wind turbines

Wind turbines worldwide cause high mortality in long-lived bats through collisions. To mitigate these impacts, operators commonly apply blanket curtailment by stopping turbine blades under low wind speed and mild temperature, when bat activity is often high and energy production...

Grid4Earth: An Open-Source Python Ecosystem for Geospatial Data Integration Using an Ellipsoidal HEALPix DGGS

Abstract. The rapid growth in Earth observation (EO) and Digital Twin Earth data volumes creates a need for global, reproducible, and cloudnative spatial representations. Conventional latitude–longitude grids and projected tiling systems remain useful, but they introduce projecti...

A 45-year high-resolution wave hindcast for the Fijian archipelago: mean climate, spectral characteristics, and long-term trends

Fiji’s coastal communities are highly exposed to ocean waves that drive erosion, inundation and shoreline change. Yet the Fijian archipelago lacks a comprehensive, wave-climate assessment at a resolution that represents island effects appropriately. To address this gap, we presen...

Winter sediment resuspension in a submarine canyon drives the offshore export of toxigenic Alexandrium catenella cysts

Abstract Harmful algal blooms (HABs) caused by the toxigenic dinoflagellate Alexandrium catenella recur regularly in the Lower St. Lawrence Estuary (LSLE, eastern Canada). Using quantitative polymerase chain reaction (qPCR) to detect A. catenella DNA as a proxy for cyst abundance...

Mitochondrial ribosome content as a proxy for respiration

Quantifying cellular activities remains a major challenge across fields ranging from microbial ecology to biotechnology and biomedical sciences. Building on the well-established linear relationship between growth rate and ribosome content-the so-called microbial growth law-this s...