This deliverable is a “Technology outlook” for the JERICO-Design Study (J-DS) Task 2.1 that has been developed in collaboration with the scientific vision created in WP1 and provides an overview of the current status of JERICO-RI infrastructures from a national perspective and guidance on the technology design for the future JERICO-RI. The Technology outlook will provide the basis for the gap analysis performed in T2.2 and finally the roadmap for [...]
EU environmental Research infrastructures (RI) are the result of a construction by scientific communities and are therefore organised, most often, by thematic domains. They are designed to respond to scientific questions and/or service demands, and involve technological developments and innovations. However, a certain number of infrastructures are interconnected and/or allow for cross-cutting, interdisciplinary studies in various environments, fr [...]
Ce rapport de veille scientifique et technologique sur les ressources minérales non énergétiques des grands fonds, réalisé dans le cadre de la convention avec le Ministère de la Transition Écologique et de la Cohésion des Territoires (MTECT), couvre la période allant de juillet à décembre 2023. Comme pour les précédents rapports, les références des publications scientifiques relevées au cours de la période sont listées en annexes (voir 8.). Les f [...]
The ostreid herpesvirus (OsHV-1) was recently detected in San Diego Bay for the first time in farmed juvenile Pacific oysters (Crassostrea gigas). Due to the virus’ ability to cause mass mortality (50 to 100%), it is important to determine the factors that promote infection as well as the consequences of infection. Here we assess the role of temperature in controlling OsHV-1 induced mortality. Pacific oysters were exposed to the San Diego Bay mic [...]
Assessments of ecosystem functioning are a fundamental ecological challenge and an essential foundation for ecosystem-based management. Species trophic position (TP) is essential to characterize food web architecture. However, despite the intuitive nature of the concept, empirically estimating TP is a challenging task due to the complexity of trophic interaction networks. Various methods are proposed to assess TPs, including using different sourc [...]
Nous explorons différentes approches hiérarchiques de transfert d’apprentissage d’un réseau antagoniste génératif Style- GAN2 afin de synthétiser des images de Copepoda. Il s’agit d’un des groupes les plus abondants de la faune aquatique, possédant peu d’images disponibles publiquement. Ces animaux sont de formidables bio-indicateurs de la pollution ou des changements environnementaux d’un milieu. Deux schémas d’apprentissage sont proposés. Le pr [...]
Les archées peuplent tous les biotopes de la planète, qu'ils soient aquatiques, terrestres ou atmosphériques, avec des paramètres physico-chimiques "ordinaires" ou extrêmes. Elles colonisent les habitats naturels, les microbiomes animaux et les environnements créés par l'activité humaine. Dès lors que l’on approche des conditions physico-chimiques limites de la vie, elles semblent dominer la biomasse présente. Elles sont abondantes dans certains [...]
In the context of intra-body communication, galvanic coupling has gained significant attention. This communication technique leverages conductivity of biological tissues to use them as a medium for modulated electrical signals. This paper introduces a novel fully-digital demodulation technique for use in galvanic coupling transmission with BPSK-modulated signals at low frequencies (below MHz). The technique relies on an original digital processin [...]
Fish migrate for varied reasons, including to avoid predators and to access feeding, spawning, and nursery habitats, behaviors that enhance their survival and reproductive rates. However, the migratory ecology of many important fishes, especially those in river–floodplain ecosystems, remains poorly understood. One fish of the Amazon Basin whose migratory behavior is poorly understood is the catfish Pseudoplatystoma fasciatum. Here, we used otolit [...]
Les indices d'abondance de l'albacore (Thunnus albacares) dans l'océan Atlantique ont été calculés à partir de la série de CPUE des senneurs européens (2010-2022) pour les opérations de pêche effectuées sous des objets flottants. Nous avons utilisé trois approches de modélisation pour la standardisation des CPUE : un modèle linéaire mixte généralisé (GLMM), un modèle additif généralisé (GAMst) et un modèle spatio-temporel (ST). En outre, une méth [...]
In Brazil, the Whitespotted Eagle Ray Aetobatus narinari is considered data-deficient due to the scarcity of basic information on its biology, ecology, and vulnerability to capture. Despite this, the species is caught by artisanal fishing along most of the coast, especially in the northeast of Brazil. This study analyzed mitochondrial DNA data in specimens of A. narinari caught by artisanal fishing in the northeast coast of Brazil to understand t [...]
Group‐living in animals comes with a number of benefits associated with predator avoidance, foraging, and reproduction. A large proportion of fish species display grouping behaviour. Fish may also be particularly vulnerable to climate‐related stressors including thermal variation, hypoxia, and acidification. As climate‐related stressors are expected to increase in magnitude and frequency, any effects on fish behaviour may be increased and affect [...]
Underwater images are altered by the physical characteristics of the medium through which light rays pass before reaching the optical sensor. Scattering and wavelengthdependent absorption significantly modify the captured colors depending on the distance of observed elements to the image plane. In this paper, we aim to recover an image of the scene as if the water had no effect on light propagation. We introduce SUCRe, a novel method that exploit [...]
Fish growth is a fundamental biological process driven by a multitude of intrinsic (within-individual) and extrinsic (environmental) factors that underpin individual fitness and population dynamics. Interannual variability in river hydrology regarding the intensity and duration of floods and droughts can induce interannual variations in the biotic and abiotic variables that regulate fish growth. However, the understanding of how interannual varia [...]
Imagery has become one of the main data sources for investigating seascape spatial patterns. This is particularly true in deep-sea environments, which are only accessible with underwater vehicles. On the one hand, using collaborative web-based tools and machine learning algorithms, biological and geological features can now be massively annotated on 2D images with the support of experts. On the other hand, geomorphometrics such as slope or rugosi [...]
Reef manta rays (Mobula alfredi) face threats from human exploitation and activity in several regions of the world and crucial information on the ecology of the species is needed. The species is observed at several sites in all parts of the archipelago of New Caledonia where anthropogenic influence is presumed to be minimal. This study is the first to investigate the population of New Caledonia and focuses on its characteristics and its habitat u [...]
Statistical models are an alternative to numerical models for reconstructing storm surges at a low computational cost. These models directly link surges to metocean variables, i.e., predictors such as atmospheric pressure, wind and waves. Such reconstructions usually underestimate extreme surges. Here, we explore how to reduce biases on extremes using two methods—multiple linear regressions and neural networks—for surge reconstructions. Models wi [...]
The Indian Coastal Current is the only channel for material exchange between the two largest marginal seas in the northern Indian Ocean: the Bay of Bengal and the Arabian Sea. However, its past history is poorly known, limiting accurate predictions of its future changes. Here, we present a new clay mineral record from south of India supported by interpretations of model simulations to trace its variability over the last 18,000 years. Decreased sm [...]
Commission Decision of 25 February 2016 setting up a Scientific, Technical and Economic Committee for Fisheries, C(2016) 1084, OJ C 74, 26.2.2016, p. 4–10. The Commission may consult the group on any matter relating to marine and fisheries biology, fishing gear technology, fisheries economics, fisheries governance, ecosystem effects of fisheries, aquaculture or similar disciplines. This report presents the findings of the STECF Expert Working Gro [...]
Spatial and temporal patterns of future coral bleaching are uncertain, hampering global conservation efforts to protect coral reefs against climate change. Our analysis of daily projections of ocean warming establishes the severity, annual duration, and onset of severe bleaching risk for global coral reefs this century, pinpointing vital climatic refugia. We show that low-latitude coral regions are most vulnerable to thermal stress and will exper [...]