Ocean acidification close to critical threshold, say scientists, posing threat to marine ecosystems and global liveability
Industrial civilisation is close to breaching a seventh planetary boundary, and may already have crossed it, according to scientists who have compiled the latest report on the state of the world’s life-support systems.
Stratospheric ozone depletion has remained stable, however, and there has been a slight improvement in atmospheric aerosol loading, the research says. Ocean acidification is the phenomenon of increasing acidity in ocean water due to the absorption of atmospheric CO. The process not only harms calcifying organisms, potentially leading to food web breakdown, but also reduces the ocean’s efficiency in acting as a vital carbon sink.
The transgression of boundaries in each of those areas risks disrupting the stability, resilience and liveability of the state of the planet that has persisted for the past 12,000 years and that has allowed the rise of complex human civilisation.
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