Beetles on a Sandy Grassland

摘要: 1. The diurnal activity of the carabid community in an East-European dry sandy grassland was studied from April to October. 2. Soil and air temperature, relative air humidity and light intensity were measured and beetles were collected using 2 m long gutter traps. 3. In summer beetle activity was high for only a short period during the night. In spring and autumn activity was restricted to the day with no clear peak and with decreasing activity in the early afternoon. 4. Soil temperature and light intensity seem to be the most important factors in regulating of activity of carabids on sandy grassland.