Abundance and taxonomic data of arthropods collected with pitfall traps from temperate forest stands from Lower Saxony, Germany. Five forest stand types were studied (Douglas fir monoculture, European beech/Douglas fir mixture, European beech monoculture, European beech/Norway spruce mixture, Norway spruce monoculture) at seven different sites, four in southern (site 1-4) and three (5,7,8) in northern Lower Saxony, Germany. Twelve pitfall traps were set at each of the 35 plots and the material was collected every three weeks starting from 03.09.2019