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Created: 01 October 2018

This year, abundant rainfall triggered numerous shallow landslides in a protection forest area burnt in 2011, causing damages to infrastructures and the interruption of roads. The stand replacing fire caused the almost complete loss of root reinforcement that did contribute to slope stability within few years, as documented in Vergani et al. (2017). After such forest disturbance, models such as SOSlope can be used to localize critical unstable areas and to optimize the plan of measures to enhance the recovery of forest protection effectiveness. Recent studies have shown that such forest needs 40 to 80 years to recover their protection function, without influence of ungulates. In these cases, targeted measures can considerably reduce the time window of increased landslide probability. 

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Created: 30 August 2018

Today, the Swiss forestry association (SFV) celebrated its 175th anniversary. Founded in 1843, three decades before the enactment of the first forest law in Switzerland (Forestry Police in high mountains law, 1876), the association was founded to counter overexploitation of mountain forests, which increasingly led to flooding hazards. A major objective of the SFV back then was, and still is, defined as the conservation of forests to ensure a sustainable protection against natural hazards, such as torrential floods, snow avalanches, rockfall, shallow landslides and excessive erosion. Today, in addition, forests have to produce sufficient wood and fiber resources (e.g., as a piece in the huge puzzle of the solution for today's plastic pollution problem), they supply biodiversity, recreation and drinking water and have a cooling effect during heat waves, which increasingly occur.

During the opening speech of the anniversary seminar "Visions for the forest", Doris Leuthard, Swiss Minister of Environment, Transport, Energy and Communications, stressed the importance of the role forests play in reducing natural hazard risks. Moreover, climate change complicates the task of properly managing these protection forests, since intensities and frequencies of natural hazards increase in given areas. At the same time, disturbances, such as droughts, forest fires, or invasive insects and tree species gain importance as well, she said. Especially in combination with all other services forests need to provide, the task becomes complex and the potential for future conflicts is rising. Solutions can be found by teaming up policy makers, practitioners and scientists. Right there, associations such as SFV and ecorisQ can provide an enourmous added-value by taking the lead in connecting and mobilising experience and scientific knowledge.

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Created: 11 August 2018

January 2018 was an unusually warm and wet month across the Western Alps, with widespread landslides at low elevations and massive snowfall higher up. According to a comment published in Nature Geoscience, this extreme month yields lessons for how mountain communities can prepare for a warmer future. The weather of January 2018 was unusual - at the upper extreme of the historical distribution of storminess, temperature and precipitation measurements in the Western Alps – and broke many weather records. Not only was January 2018 unprecedentedly warm, but it was also extremely wet with unusual snowfall at higher elevations. As regional climate models predict substantial warming and, to a lesser extent, increased precipitation across the European Alps, the authors argue that the extreme weather conditions and associate mass wasting observed during January 2018 could yield valuable insights into typical winter conditions to be expected by the end of the 21^st century.