Body condition decline in Western european fishes.

The body condition of small pelagic fish has been declining since the early 2000s in several ecosystems, including the Mediterranean Sea and the Bay of Biscay, probably in response to bottom-up control. Possible trends in body condition of demersal and benthic species in the same regions have so far received little attention. Using a North East Atlantic case study (Bay of Biscay and Celtic Sea), we computed Le Cren's relative body condition index for 264,000 fish individuals from 17 species, based on individual length and weight data collected between 2002 and 2022.

How will the cumulative effects of fishing and climate change affect the health and resilience of the Celtic Sea ecosystem?

Ecosystems are subject to increasing anthropogenic pressures worldwide. Assessing cumulative effects of multiple pressures and their impacts on recovery processes is a daunting scientific and technical challenge due to systems' complexity. However, this is of paramount importance in the context of ecosystem-based management of natural systems.

Large potential impacts of marine heatwaves on ecosystem functioning.

Ocean warming is driving significant changes in the structure and functioning of marine ecosystems, shifting species' biogeography and phenology, changing body size and biomass and altering the trophodynamics of the system. Particularly, extreme temperature events such as marine heatwaves (MHWs) have been increasing in intensity, duration and frequency. MHWs are causing large-scale impacts on marine ecosystems, such as coral bleaching, mass mortality of seagrass meadows and declines in fish stocks and other marine organisms in recent decades.

When economy meets ecology, is it truly conflicted? A dashboard approach to assess the sustainability performance of European tropical tuna purse seine fisheries.

The development of an ecosystem approach to fisheries management makes the assessment of the sustainability performance of fisheries a priority. This study examines European tropical tuna purse seine fleets as a case study, employing a multidisciplinary dashboard approach to evaluate historical and current sustainability performances. The aim is to enhance comprehension of the interconnected dimensions of sustainability and pinpoint management policy priorities.