Epiedaphic Coleoptera in the Dadia forest reserve (Thrace, Greece) : the effect of human activities on com- munity organization patterns

摘要: In this work we described and compared the community organization patterns of Coleoptera in vari- ous sites Dadia forest reserve, including different types vegetation management practices (grazing, cultivation, afforestation). Sampling was carried out every two months for a year, by means pitfall traps. For studying diversity structure, used Renyi's parametric index fitted geometric series model on rank/abundance data. order to study changes species composition, Indicator Value method (IndVal), after tree clustering our sampling sites. According results, although three increased epiedaphic Coleoptera, their effects were different. Grazing did not affect composition communities but altered structure. The ungrazed forests over-dominated one species, while those grazed hierarchically structured. On other hand, main effect cul- tivation coleopteran profound change composition. cultivated site domi- nated characteristic that almost absent from all Afforestation caused intermediate both structure Finally, certain seemed be good indices assessing human impacts natural envi- ronment, is even more appropriate.