A model called MAGIC7 was used to study the acidification and recovery of alpine lakes in the Tatra Mountains. The researchers looked at changes in lake water chemistry from 1860 to 2050, focusing on sulphur and nitrogen emissions. They found that the lakes experienced significant changes in acidity levels over time, with a decrease in strong acid anions and an increase in base cations. The lakes showed signs of chemical recovery from acidification by 2000, with a forecasted continuation of this trend in the next decade. While some lakes may not fully return to pre-industrial alkalinity levels, the ongoing improvement in water quality should support the biological recovery of most alpine lakes in the Tatra Mountains.