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The Summer School FORMON for PhD, postdocs and master students will take place in Davos from 23 to 29 August. Apply by May 1st.


Climate change affects the water conditions in the atmosphere, increasing trees' water stress. WSL researchers are investigating the phenomenon.


Take a look behind the scenes of our work. What does forest protection mean in practice?

Video with subtitles in various languages.


In 2019, bark beetle damage reached 1.4 million m3 of spruce wood. This is the second highest level ever recorded apart from the year 2003.


Transmission without alteration of genetic information: trees pass on environmental changes to their offspring, a WSL study has found.


Numerous organisms rely on deadwood for survival. A new WSL factsheet explains how to recognize and protect those old important trees (in German).


Airborne nitrogen stimulates tree growth, but a new study has found that this growth is limited by a lack of other nutrients.


The dendrochronologist Fritz Schweingruber passed away on 7 January 2020. For almost 50 years, he made an outstanding contribution to the WSL.


Der Nordische Fichtenborkenkäfer ist erstmals in der Schweiz und in Liechtenstein entdeckt worden. Er besiedelt vor allem Fichten.


Two new WSL projects deal with current threats to ash trees in Europe. (In German and French)


The number of insect species has shrunk dramatically in the last decade, according to an international study involving the WSL.


FOEN report with the participation of WSL: People, forests, water bodies and agriculture suffered from the hot and dry summer of 2018. (In German and French)


WSL researcher Charlotte Grossiord investigates how global change impacts terrestrial ecosystems. She has been appointed professor at EPFL and WSL.