Université de Fribourg

Changes in wood anatomy in tree rings of Pinus pinaster Ait. following wounding by flash floods

Ballesteros, J.A. ; Stoffel, Markus ; Bodoque, J.M. ; Bollschweiler, Michelle ; Hitz, Oliver ; Díez-Herrero, A.

In: Tree-Ring Research, 2010, vol. 66, no. 2, p. 93-103

This paper analyzes the anatomical response of Pinus pinaster Ait. following wounding by flash floods. A total of 14 wood samples were taken from 14 different scarred trees located on the river banks of the Arroyo Cabrera torrent (Spanish Central System). In addition, 20 increment cores were collected from undisturbed and healthy P. pinaster trees to build a local reference chronology. For the...

Université de Fribourg

Three-dimensional analysis of the anatomical growth response of European conifers to mechanical disturbance

Schneuwly, Dominique M. ; Stoffel, Markus ; Dorren, Luuk K.A. ; Berger, Frédéric

In: Tree Physiology, 2009///doi: 10.1093/treephys/tpp056

Studies on tree reaction after wounding were so far based on artificial wounding or chemical treatment. For the first time, type, spread and intensity of anatomical responses were analyzed and quantified in naturally disturbed Larix decidua Mill., Picea abies (L.) Karst. and Abies alba Mill. trees. The consequences of rockfall impacts on increment growth were assessed at the height of the wounds,...

Université de Fribourg

Rockfall and snow avalanche impacts leave different anatomical signatures in tree rings of juvenile Larix decidua

Stoffel, Markus ; Hitz, Oliver M.

In: Tree Physiology, 2008, vol. 28, no. 11, p. 1713-1720

Rockfall and snow avalanche events often cause injury to European larch (Larix decidua Mill.) trees, giving rise to the formation of callus tissue and tangential rows of traumatic resin ducts (TRDs). We analyzed and quantified anatomical reactions of juvenile trees injured before the start of the growing season by snow avalanches (15 trees, 324 cross sections) or rockfalls (18 trees, 270...