Comparative Study on Beetle Fauna between Burned and Unburned Forest

摘要

The burned pine forest may change into the grassland with bushes. However, it is likely that forest insects immigrated from the adjacent forest may be temporally abundant in the burned forest. This study was conducted to observe the immigration of insects for a year since forest fire. Beetle fauna in burned forest was compared with that in unburned forest in Goseong in Gwangwon province where the big fire was occurred and burned 3,762 ha of forest in 1996. The 381 individuals of 60 beetle species wascollected from the burned forest, whereas the 370 individuals of 63 beetle species from the unburned forest. There was no difference in abundance and species richness of beetle fauna between burned forest and unburned forest. Most of abundant beetle species were collected from burned forest as well as unburned forest. Seasonal occurrence of the insects in burned forest were similar to those in unburned forest. These indicate active immigration of insects in burned forest in early season after fire. Thebeetles dwelling on vegetation were more actively immigrated into burned forest compared with those foraging in ground.