First global assessment of marine ecosystems during a year when warming exceeded 1.5°C

Summary

Researchers at King Abdullah University of Science and Technology (KAUST) led a global assessment documenting marine ecosystem responses during the first year global temperatures temporarily exceeded 1.5°C above pre-industrial levels. Published in One Earth, the study analyzed 201 ecological impact events worldwide, ranging from coral bleaching to species mortality. A key finding was that ocean heat-related disruptions occurred throughout the year, not solely during summer marine heat extremes. Why it matters: This research provides crucial insights into the pervasive real-world ecological impacts of climate change on marine ecosystems, underscoring the need for year-round monitoring and informing policy for coastal nations in the region.