Die Weißtanne (Abies alba), eine ökologische Alternative zur Fichte (Picea abies)? : Vergleichende Untersuchungen der Baumkronenzönosen

Alfeld

2005

S. 492-497

4 Abb., 26 Lit. Ang.

Artikel aus einer ZeitschriftUnselbständiges Werk

200127803

Arthropod communities on 5 fir and 5 spruce trees were investigated at 6 study sites in Bavaria by using flight-interception traps. Saproxylic beetles, phytophagous Elateridae and Curcullonidae, Allecullidae, true bugs, lacewings and cicada were analysed. Fir exhibited higher species numbers, also for endangered species. Spruce seems to establish its typical arthropod community only in its autochthonal alpine habitats. In the colline areas, the communities are rather determined by surrounding tree species. A noticeable trend is that even species that typically occur on deciduous trees are found higher numbers on fir than on spruce. This confirms the wide ecological amplitude of fir over many forest communities and climatic conditions, as shown by forestry studies during recent decades. This is supported by the regular occurence of many insect species on both fir and deciduous tree species. Therefore it can be deduced that in former days, fir occurred in more forest communities than at present. The role of the bark beetles is still unclear. The low numbers of typical fir bark beetles were surprising. An important advantage of fir over spruce is the significantly susceptibility to infestation by Ips typographus.