The Atlantic bluefin tuna is a highly migratory species widely distributed in the Atlantic Ocean, providing a significant source of food and revenue for local communities. However, despite its significance, the impact of climate variability on Atlantic bluefin tuna populations remains to be seen, particularly with regard to phenology or the timing of seasonal events such as spawning and migration. This project aimed to explore the impact of shifting oceanographic conditions on Atlantic bluefin tuna, using the species as a representative for related changes. The study employed a combination of meta-analysis and field-based research, utilising stable isotope and stomach content analysis, and involved the participation of local fishermen. The focus was on phenology – the timing of life cycle events such as migration, feeding, and reproduction – and how changing ocean conditions could affect these behaviours. The results offer a crucial understanding of the effects of climate variability on Atlantic bluefin tuna populations and the role of local communities in monitoring and preserving these critical species.
The findings of this study can inform future research and conservation efforts aimed at preserving Atlantic bluefin tuna populations and their habitats. By understanding the impact of climate variability on the timing of life cycle events, it is possible to predict future changes in the populations of these species and implement appropriate management and conservation measures. Furthermore, the involvement of local communities in the research process has emphasised the importance of community-based approaches in marine conservation and management.