Future ocean biomass losses may widen socioeconomic equity gaps

Ensemble projections combining multiple Earth system and marine ecosystem models show significant biomass decreases in 68% to 84% of the global ocean under low and high emission scenarios, respectively. This study analyzes the consequences of these climate change impacts for maritime nations across the world. Results suggest that countries with poor socioeconomic statuses, such as low nutrition, wealth, and ocean health, will experience the greatest projected losses, highlighting that climate-driven biomass changes will widen existing equity gaps and disproportionally affect populations that contributed least to global CO2 emissions.

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