Swiss Federal Institute for Forest, Snow and Landscape Research WSL

Institutional 04.09.2026
'The summer of 2026 could be an eye-opener'
'The summer of 2026 could be an eye-opener'

Brown trees and dry riverbeds: WSL Director Rolf Holderegger explains in an interview what needs to be done after the summer of 2026.

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Flussbett mit klarem Wasser links und Kiesufer rechts, umgeben von dichtem grünem Laubwald unter blauem Himmel
 
Research 24.08.2026
Forest fires: FAQs and feature
Forest fires: FAQs and feature

Here our experts answer the most frequently asked questions about forest fires.

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A forest at night, with red-orange flames glowing and illuminating the smoke against the sky.
 
Research 21.08.2026
Drought 2026: Frequently asked questions and answers
Drought 2026: Frequently asked questions and answers

Withered leaves and record-low water levels: WSL researchers answer frequently asked questions about the hot and dry summer of 2026.

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Research 07.08.2026
"Forest fires can put extra stress on trees"
"Forest fires can put extra stress on trees"

Forest ecologist Alessandra Bottero explains why forest fires can increase bark beetle infestation risk and how to prevent mass infestations

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Aerial view: the left-hand half shows burnt forest, the right-hand half shows unburnt forest.
 

Research for people and the environment in a changing world

News

Research
31.08.2026
A bearded man in a red jacket is standing in front of a lake in a mountainous landscape.

“In Canada, I was the only avalanche researcher.”

Pascal Haegeli, the new head of the SLF’s Snow Avalanches and Prevention research unit, talks about his plans for his field of research.

Institutional
16.07.2026
A woman with long, light brown hair and a relaxed expression is looking directly at the camera. She is wearing a black turtleneck sweater. The background is a soft gray color.

Forest professor promoted at EPFL

Charlotte Grossiord is researching how forests fare in the face of climate change. EPFL has now promoted her to associate professor.

Research
16.07.2026
A hummingbird moth hovers near vibrant pink flowers, with green leaves surrounding the blooms. In the background, a blurred building window is visible, adding depth to the scene.

Climate change in cities

A new modelling approach provides a more accurate picture of how climate change will affect biodiversity in cities.

Opinion
15.07.2026

Cities Need a Bee Strategy

In this Carte Blanche, Marco Moretti and Joan Casanelles-Abella call for more effective regulations governing the management of honeybees in cities.

Institutional
13.07.2026

WSL and NTLU Ukraine work together

The long-standing collaboration between NLTU Ukraine and WSL is continuing and yielding new results.

Research
23.06.2026

Graubünden blooms with Flora Raetica

"Flora of Graubünden" will celebrate its 100th anniversary in 2032—for the new edition, volunteers and researchers are documenting the local flora.

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Events

10 September 2026

WaldDialog – Forest Dialogue – Dialogue Forestier 2026

Am 10. September 2026 laden das SwissForestLab und das TriNational ForestLab gemeinsam mit der Konferenz der Kantonsförster KOK und dem…

29 September - 2 October 2026

Interactive Workshop on Consumer Decisions

The WSL research project Beyond Borders invites members of the public to participate in an interactive workshop about everyday consumer…

1 to 2 October 2026

Flechten im Wald 2026

Dieser Kurs gibt Einblick in die Welt der Flechten in Wäldern. Auf kurzen Streifzügen in der näheren Umgebung der WSL und anhand von…

All Events