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This policy brief examines the loss of oxygen in the global ocean and specifically within the Peruvian Sea, highlighting the expansion of Oxygen Minimum Zones (OMZs) due to global warming and the risk of 'dead zones' caused by synergistic effects of climate change and human activity.

This executive summary from the Stockholm Environment Institute describes the cumulative impact of global and local stressors on marine ecosystems. It highlights that over 40 percent of the marine environment is already affected by combined stressors, such as ocean warming, acidification, and overfishing. The document argues that current management strategies are often too narrow, focusing on single issues rather than the synergistic interactions between stressors, and calls for a cross-scale governance system to increase ecosystem resilience.