Abstract:In order to assess the beetle communities structure and species diversity in winter-wheat and different aged ecological compensation area, field studies were conducted in July-October 2003 and May-June 2004 in the wildflower areas in Bern, Switzerland. In total, we recorded 6009 individual beetles representing 150 species of 25 families in these areas. Of these, we recorded a total of 445 individuals of 38 species in winter-wheat fields, 2760 individuals of 46 species in 1-year old wildflower area, 1325 ind...