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Local conditions amplify coral loss after marine heatwaves

Think globally, act locally.

Rising temperatures from climate change over the past few decades have led to repeated coral bleaching and subsequent deaths. The impact is so widespread that it has been suggested that only a reversal of climate change can save coral reefs around the world, Donovan said. And faculty Consider the interaction between local conditions and coral reef health. and found that adverse conditions amplify climate impacts (see View by Knowlton). better decrease Such results suggest that care for local coral reefs may help them remain in our warming world.

science, abd9464, this issue, pp. 977; See also abi7286 on page 908.


Climate change threatens coral reefs by causing heat stress events that lead to widespread coral bleaching and death. From the global nature of many of these coral mortality events. Recent studies have confirmed that mitigating climate change is the only way to conserve coral reefs. Analyzing 223 sites around the world, we show that local pressures coordinate climate change to kill coral. Local factors such as macroalgae or sea urchins are abundant. This causes more coral loss in the years after bleaching. Especially The effects of increased heat stress and macroalgae exacerbate coral loss. Our results provide an optimistic hypothesis that effective local management coupled with global efforts to mitigate climate change can help coral reefs survive the Anthropocene.

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