Forest

Forests renew themselves naturally. There has been very little research into how exactly this happens – until now. Researchers at ETH Zurich and WSL have set themselves the task of solving this puzzle.

The media uproar over wolf attacks on livestock in Switzerland and a bear attack in Italy show how charged the issue of large carnivores and humans coexisting in Europe is. ETH Zurich researcher Paula Mayer has now created a participatory model to help facilitate human-bear coexistence using the example of the Apennine brown bear.

The invasive fungal disease ash dieback has already affected 90% of ash trees in Central Europe. In addition, an invasive beetle threatens the trees. But there is now good news: trees that are resistant to the fungus are also better able to withstand the beetle, as a trial led by the Swiss Federal Institute for Forest, Snow and Landscape Research WSL shows.

Increasing summer heat and drought are affecting European forests – some years, trees brown prematurely and some even start to die back. Researchers from ETH Zurich and the WSL are showing how exceptional weather conditions over several years are turning forests brown.

UN International Day of Forests on 21 March is the perfect opportunity to showcase some of the important forest research being done at EPFL. For instance, one recent study found that the changes in relative humidity caused by higher temperatures are having a significant impact on trees.