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The publication of Forest Protection Switzerland is available in German and French. More on


How the dry summer of 2018 affected forest trees is revealed by Europe-wide measurements of the fluctuations of tree trunks.



Two new user-friendly online tools display comprehensive information about forests and the services they provide, now and in the future.


In addition to high soil moisture and air humidity, the day length is particularly decisive. The length of the growing season is insignificant.


How genome analyses can help us to understand the forest ecosystem and adapt it to climate change was the subject of a conference at WSL.


This year's summer school focused on forest monitoring and was attended by 24 enthusiastic students from all over the world.


Researchers use spectral data from drone photos to reveal the health condition of trees.


A long-term study shows that dry periods hit spruce and fir forests hard, but targeted measures can increase their resilience.



The Bödmerenwald near Muotathal has seen a significant increase in wood volume, dead wood and small habitats for insects and fungi.


Tree pests are on the increase in Switzerland. Researchers at the WSL Plant Protection Laboratory are on their trail. Read more in Diagonal.


Trees grow mainly at night, because dry air inhibits cell growth in day time, even in moist soil conditions, a new WSL study found out.


By supplying pine trees with labelled CO2, researchers have shown for the first time how sugars formed by trees are distributed in the soil.



What is Vapor Pressure Deficit and why does it matter for forests? A SwissForestLab video presents high-end research in this field.


A review study shows: Many species cannot keep up with increasing warming, although they move to higher altitudes.


Tree buds emerge from dormancy when they have been exposed to cool temperatures for a certain time.


Bark beetles destroyed more than 1.4 million m3 of spruce wood in 2020. Beetle infestation is expected to remain high in 2021. (in German)


A high level of biodiversity is important for forest management. The more diverse a forest is, the better it can cope with external influences.


Today, Europe's forests must perform many functions at once. Combining timber use with biodiversity promotion covers two key functions.


In the summer of 2018, many beeches changed leaf colour prematurely and reduced their growth, a study at 75 NFI sites reveals.


With the FOEN, 20 cantons and forestry enterprises, WSL is creating 57 experimental plantations to study the climate tolerance of 18 tree species.