1Ocean acidification poses a grave threat to calcifying organisms such as corals, molluscs, and certain planktonic species.
2Is the current rate of acidification in the Southern Ocean exceeding the worst-case projections of the IPCC?
3The experimental data did not confirm that acidification of the growth medium inhibits microbial respiration at the predicted threshold.
4Consider the long-term acidification of agricultural soils when evaluating the sustainability of intensive nitrogen fertilisation.
5There is a troubling feedback loop in which acidification reduces the ocean's capacity to act as a carbon sink, thereby accelerating atmospheric CO₂ accumulation.