Auswirkungeh einer frosfspannerbekämpfung auf die bodenfauna eines elchertwaldes

Abstract

Studies were made in 1998 and 1999 In an oak forest (“Meuenburger Holz”) in Northern Germany for the purpose of testing the effect of some insecticides on the soil fauna. The preparations “Fastac” (active agent:a-Cypermeth-rin) and “Foray 48 B” (active agent:Bacillus thuringiensis var.kurstaki) were used for the control of winter moths (Operopbthera brumata). The insects and spiders were caught using the following methods: soil samples, pitfalls and net sweeps. There were differences In the spectrum of species and In the density of individuals between the three experimental areas, but these did not depend on effects of the used insecticides.