anthropogenic disturbance; aquatic and terrestrial bioindication; biological assessment; deforestation; dragonflies; habitat destruction; Odonata; tropical rain forest; Kalimantan

This study analyse the adult dragonfly assemblage pattern against spatial and temporal disturbance characteristics in Indonesia?s Sungai Wain Protection Forest (East Kalimantan). Adult dragonfly assemblages at individual sampling sites were analysed in relation to (1) their intensity, (2) frequency of human-caused disturbances, and (3) the time since the last such disturbance while controlling random variables (type of aquatic and terrestrial habitat) were removed. This study tests the effect of these factors on (1) species richness, (2) proportion of Zygoptera, (3) proportion of forest specialists, and (4) proportion of Borneo?s endemics. The human-induced disturbances in the rain forest resulted in pronounced changes in the taxonomical composition and functional diversity of the odonate fauna. Adult odonates comprise an appropriately sensitive and versatile indicator group for identifying changes in terrestrial forest environments as well as in freshwater habitats.