Wildbachsperren aus Fichte und Tanne: Festigkeit und Pilzbefall in den ersten Jahren

Timber constructions in torrent control with Norway spruce and silver fir: wood quality and colonisation with decay fungi during the first years Timber is widely used for protection measures in torrent control. However, life span of woody constructions such as timber check dams is limited due to fungal decay. Only sparse scientific information is available on the long-term behaviour of timber structures and the colonisation with decay fungi. Related to this, in practice a controversial discussion has been going on if either Norway spruce (Picea abies) or silver fir (Abies alba) is more enduring and if bark removal increases resistance against fungal decay. In order to going into this matter, a series of 15 timber check dams built in 1996/1997 has been monitored. The constructions were alternatively realised with Norway spruce and silver fir, half of them each with remaining and removed bark, respectively. The scientific investigations included the documentation of colonisation with rot fungi and the ident...