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Université de Fribourg

Wood anatomical changes in roots of European ash (Fraxinus excelsior L.) after exposure

Hitz, Oliver M. ; Gärtner, Holger W. ; Heinrich, Ingo ; Monbaron, Michel

In: Dendrochronologia, 2008, vol. 25, no. 3, p. 145-152

Global changes have distinct influence on fluvial processes in torrents causing erosion on slopes and riverbanks even in forested areas. Continuous as well as discontinuous erosion of riverbanks covered by trees frequently results in destabilisation and finally cause the trees affected to tip over. These uprooted trees may lead to a blockage of the river and, in the case of a collapse of the...

Université de Fribourg

Application of ash (Fraxinus excelsior L.) roots to determine erosion rates in mountain torrents

Hitz, Oliver M. ; Gärtner, Holger W. ; Heinrich, Ingo ; Monbaron, Michel

In: Catena, 2008, vol. 72, no. 2, p. 248-258

Due to the effect of global change, the potential risk of natural hazards occurring in alpine areas is expected to increase to an even higher risk-level than has been recorded during the last century. These global changes potentially also have distinct influences on fluvial processes in torrents causing erosion on slopes and riverbanks in forested areas. Dating the time of root exposure along...