Université de Fribourg

Spatial and temporal rockfall activity in a forest stand in the Swiss Prealps : a dendrogeomorphological case study

Perret, Simone ; Stoffel, Markus ; Kienholz, Hans

In: Geomorphology, 2006, vol. 74(1-4), p. 219-231

Rockfall is a major threat to settlements and transportation routes in large parts of the Alps. While protective forest stands in many locations undoubtedly reduce rockfall risk, little is known about the exact frequency and spatial distribution of rockfall activity in a given place or about how these parameters can be assessed. Therefore, the objective of the present study was to reconstruct...

Université de Fribourg

Assessing the protective effect of mountain forests against rockfall using a 3D simulation model

Stoffel, Markus ; Wehrli, André ; Kühne, Roderick ; Dorren, Luuk K.A. ; Perret, Simone ; Kienholz, Hans

In: Forest Ecology and Management, 2006, vol. 225, p. 1-3

We used one of the few rockfall models explicitly taking trees into account and compared the results obtained with the 3D simulation model RockyFor with empirical data on tree impacts at three mountain forests in Switzerland. Even though we used model input data with different resolutions at the study sites, RockyFor accurately predicted the spatial distribution of trajectory frequencies at all...

Université de Fribourg

Seasonal timing of rockfall activity on a forested slope at Täschgufer (Swiss Alps) – a dendrochronological approach = Saisonale Steinschlagverteilung auf einem bewaldeten Hang im Täschgufer (Schweizer Alpen) – ein dendrochronologischer Ansatz.

Stoffel, Markus ; Lièvre, Igor ; Monbaron, Michel ; Perret, Simone

In: Zeitschrift für Geomorphologie, 2005, vol. 49(1), p. 89-106

Dendrochronology was used to study 25 years of rockfall activity on a forested slope at Täschgufer, Täsch (Swiss Alps). We introduce a new approach by evaluating the initiation of callous tissue and resin duct formation after rockfall occurrence to determine the seasonal timing of events. Results from 270 stem discs of 18 Larix decidua Mill. trees show distinct seasonal differences in rockfall...

See also: similar author names
1 PERRET, Sophie
1 Perret, Sylvain