Swiss forests have a regeneration problem. In many places, too few young trees are growing back, or when they do they are species that are not adapted to climate change. This is the conclusion reached by researchers at the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL) in various research projects. They presented their findings in a special issue of the Swiss Journal of Forestry, as the WSL announced on Tuesday. + Get the most important news from Switzerland in your inbox While the number of young trees has increased after storms on the northern side of the Alps, it is significantly lower in the central Alps and on the southern side of the Alps, as the WSL writes. The reasons for this are a lack of light in overmature forests or damage caused by wild animals. Regional differences According to the WSL researchers, the situation regarding forest regeneration varies greatly from region to region. On the northern side of the Alps, the number of young trees per ...