Limiting the high impacts of Amazon forest dieback with no-regrets science and policy action

Researchers reviewed published studies on the Amazonian savannalization hypothesis, which predicts deep changes in the world’s largest rainforest due to climate change, and reported that without taking any action, the estimated costs of socio-economic damage to the region 30 after savannisation would range from $ 957 billion to $ 3.589 billion, while the estimated cost of preventive actions would range between $ 64.2 billion and $ 122 billion, a substantially lower estimate than damage estimates; however, the authors note that while the effectiveness of mitigation measures to avoid savannization – including reduced deforestation – remains uncertain, the adaptation actions proposed in the study would be beneficial, even if this savannization never occurs, according to the published Perspective in the scientific journal PNAS.

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