WSL News Could the lack of snow signal drought in 2023? A 50-year comparison shows that drought deficits are increasing in Switzerland due to a lack of snow. Quo vadis, Flora? Climate change is altering habitats. Read in the DIAGONAL magazine how WSL researchers are finding out how the plant world might react. How non-native tree species affect biodiversity Do alien forest tree species threaten biodiversity or soil quality? A new WSL study summarises Europe-wide results. Switzerland's habitats in digital form WSL has created a digital habitat map of Switzerland. It is now freely available on the map portal of the Swiss Confederation.