Impact of defoliation caused by the sawfly Cephalcia lariciphila (Hymenoptera: Pamphilidae) on radial growth of larch (Larix decidua Mill.)

Berlin

2006

S. 391-396

4 Abb., 3 Tab., 20 Lit. Ang.

Artikel aus einer ZeitschriftUnselbständiges Werk

200136602

The period between 2000 and 2002 repeated outbreaks of the web spinning sawfly Cephalcia lariciphila around the village of Vetrny Jenikov, Czech Republic. The impact of defoliation, caused by C. lariciphila feeding, on tree-ring formation of European larch (Larix decidua Mill.) was studied using dendrochronological methods. Heavy defoliation resulted in much less growth in the years of insect attack, the average incremental loss being 67% for the 2000-2002 period. Also, defoliation resulted in the formation of latewood with fewer cells and reduced cell-wall thickness.