Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere in a changing climate is critical to better understand the global carbon cycle, support the development of climate policies, and project future climate change. Here we describe and synthesize datasets and methodologies to quantify the five major components of the global carbon budget and their uncerta [...]
Total alkalinity (AT) and dissolved inorganic carbon (CT) in the oceans are important properties to understand the ocean carbon cycle and its link with global change (ocean carbon sinks and sources, ocean acidification) and ultimately to find carbon-based solutions or mitigation procedures (marine carbon removal). We present an extended database (SNAPO-CO2; Metzl et al., 2024c) with 24 700 new additional data for the period 2002 to 2023. The full [...]
In the framework of a changing climate, it is useful to devise methods capable of effectively assessing and monitoring the changing landscape of air–sea CO2 fluxes. In this study, we developed an integrated machine learning tool to objectively classify and track marine carbon biomes under seasonally and interannually changing environmental conditions. The tool was applied to the monthly output of a global ocean biogeochemistry model at 0.25° reso [...]
The Southern Ocean (SO) plays a fundamental role in the planet’s climate system, due to its ability to absorb and redistribute heat and CO2 (an important greenhouse gas). In addition, the SO connects three large oceanic basins the Pacific, the Atlantic, and the Indian Oceans, and it has an important role in the nutrient distribution in these oceans. However, the SO is poorly sampled, with most measurements made in austral spring and summer. The v [...]
This inaugural workshop on whelk fisheries brought together scientists and fishery managers working on whelk fisheries globally. The workshop provided a forum to share best practice and a review of the recently published work and research currently underway. There were two main focuses. First, whelk ageing techniques, ageing error and age data use in stock assessment. A second focus was on current stock assessment approaches and challenges. A fin [...]
The International Bottom Trawl Survey Working Group (IBTSWG) coordinates long-term, fish-ery-independent bottom trawl surveys in the Northeast Atlantic and North Sea, providing data for stock assessments and analyses of the distributions and relative abundance of fish. IBTSWG also promotes the standardization of fishing gears and methods. The surveys are important plat-forms for additional data collection (e.g. fish larvae, stomach contents, fish [...]
The ICES Working Group on Mixed Fisheries Advice (WGMIXFISH-ADVICE) produces mixed fisheries forecasts for the Bay of Biscay, Celtic Seas, Iberian Waters, Irish Sea, and North Sea. These forecasts highlight the potential implications of single-stock (total allowable catch and ef-fort) management on the catches of multiple stocks caught together in mixed fisheries. Mixed fisheries models consider past fishing patterns and catchability of the diffe [...]
Phytoplankton chlorophyll Sun‐induced fluorescence is observable in the upwelling light field of the ocean. This allows its observation by radiometers in situ or on satellite sensors. Since it is influenced by both biomass and physiology it can potentially provide information about both. Since fluorescence yield is complementary to photosynthesis and heat in photosystem II, its observation throughout the day provides information on the response o [...]
Driven by eutrophic conditions, AM (algal mat) proliferation is now ubiquitous in coastal areas generating significant ecological and economic impacts. The need to mitigate negative effects has prompted the exploration of removal methods, but neither the success nor the impacts on intertidal mudflats have been assessed. Limited success using a specially-adapted vessel, prompted a shift to manual removal by hand-rake at two UK (Portsmouth and Pool [...]
Which animals do people fear most, and why? Exploring animal fears in humans is crucial for understanding reactions in the face of danger, addressing both innate and learned determinants. Because of the central role they are thought to have played in primate evolution, most studies have focused on the fear of snakes. Other studies that have looked at a wider range of animals have either focused on a limited number of species and/or sampled partic [...]
Les glissements de terrain déclenchés par des séismes sont une source de risque majeure. C'est un phénomène ubiquiste, et ses conséquences s'étendent des coupures des voies de communication aux tsunamis. Afin de comprendre les processus qui entraînent leur instabilité, nous nous sommes demandé : peut-on modéliser les glissements sur faille préexistante et leur déclenchement sismique à l'aide d'une loi de friction rate-and-state dérivée d'expérien [...]
Le couplage d’outils de télémétrie et de biologging permet d’analyser la réponse écophysiologique des poissons migrateurs soumis aux pressions d’origine anthropiques telles que la modification de la continuité écologique et le changement climatique. En utilisant les données issues de l’étude de la migration des géniteurs de saumons atlantiques dans la Sélune avant et après arasement de barrages, nous illustrons quelques applications possibles de [...]
En France, les poissons migrateurs amphihalins font l’objet d’une collecte de données le plus souvent décentralisée, généralement à l’échelle des comités de gestion des poissons migrateurs (COGEPOMI). Partant du constat qu’il n’existait pas de document de synthèse récent à l’échelle nationale sur l’état ces populations, le Pôle MIAME a entamé depuis une dizaine d’années la réalisation de synthèses bibliographiques. À l’heure actuelle, des synthès [...]
A multidisciplinary study was conducted in the high volcanic island of Moʻorea (South Pacific, French Polynesia) in order to reconstruct its long-term environmental evolution together with its history of human occupation. The ‘Ōpūnohu Valley, in particular, records one of the longest and best documented human histories of the island dating from the first Polynesian (Māʻohi) occupation, from roughly the 11th to the 18th Cent. CE. In order to recon [...]
Fisheries bycatch is one of the biggest threats to marine mammal populations and an important conservation and management problem worldwide. Conventional marine mammal bycatch mitigation approaches typically rely on top-down, command-and-control regulations that often fail to create desired incentives for fishers to avoid bycatch. There is growing recognition of the need to explore alternative approaches that encourage behavioral change through t [...]
Gelatinous organisms are key players of marine ecosystems, however underlying processes of their dynamics and behaviour are still to be cleared up. Understanding the areas of production, where the blooms go and what they become are therefore of major interest in marine ecosystem management. We used floating electronic tags developed in our laboratory for jellyfish live tracking. A special attention was put on the welfare of the organisms as the t [...]
Trichiurus lepturus is a benthopelagic species of socio-economic importance in Senegal. Despite its intensive exploitation, there is a lack of studies on its life traits in West African waters, particularly in Senegal. This study aims to determine the biological parameters of this species in the northern coastal zone of Senegal. Samples were collected monthly from April 2015 to March 2016 in Cayar, one of the main landing sites in Senegal. A tota [...]
Originally introduced to France in the 1970s for aquaculture purposes, the clam Ruditapes philippinarum (Adam and Reeve, 1850) has thrived in favourable conditions across numerous sites along the Bay of Biscay, English Channel and Mediterranean coasts forming neo-naturalized populations. It is harvested by both recreational and professional fishers, with an estimated production ratio of 2.4 for both activities combined. Total French commercial fi [...]
We investigated regional changes in winter storm surges along the North Atlantic coasts, over the last century. We analyzed 35 tide gauges, with at least 80 years of data. We conducted a Generalized Extreme Value analysis on a 21-yr sliding window, to investigate variations in the 10-yr surge return level. Thanks to a standard clustering algorithm, we identified four regions with similar storm surge variations: the Northern Europe, the Northern U [...]
While research has extensively investigated the dynamics of CO2 water partial pressure (pCO2) and planktonic food webs (PFWs) separately, there has been limited exploration of their potential interconnections, especially in marsh typologies. This study’s objectives were to (1) investigated if pCO2 and atmospheric CO2 flux can be elucidated by PFW topologies, and (2) ascertain if these potential relationships are consistent across two distinct “Bl [...]