MODELING THE POPULATION-DYNAMICS OF ISOTOMA-NOTABILIS (COLLEMBOLA) ONSITES OF DIFFERENT AGRICULTURAL USAGE

A model for the simulation of the population dynamics of Collembola un der field conditions is presented. After calibrating the model on past ure land it was validated on five different agricultural sites grown w ith sugar beets, cereals and beans. On four of the six sites the simul ation period was two years, on the remaining two sites three years. A good agreement between field measurements and simulation results was o btained. Because the simulation period included the winter time it was shown that the model is applicable to a broad range of climate condit ions. This simulation model can be used to analyze the environmental i mpact (e.g. pesticides, tillage) on the population dynamics of Collemb ola.