Abiotische Schäden 2003

Wien

2003

Artikel aus einer Zeitschrift

200108283

In the summer of 2003 which was one of the driest and warmest in Austria since the beginning of weather recordings, severe damages by drought and heat have been observed. Beside the typical leaf discolorations and dieback of twigs, smaller trees in new plantations died because of lack of water. Due to the drought stress many trees have or will become vulnerable to bark beetle attack. But also during the colder seasons trees have been damaged. In winter, cold temperatures combined with poor snow cover induced frost drought especially in Douglas fir (Pseudotsuga menziesii) and late frost, mostly in May, caused severe damage to Fir (Abies alba) and Beech (Fagus sylvatica). During long periods with very low temperature winter frost caused moderate damage to different tree species.