Dragonflies of Nee Soon swamp forest 
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Subcatchment 
Fig. 3. Mean species richness graph of odonates at various sub-catchments (N=4, Error Bar=±l 
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Subcatchment 
Fig. 4. Mean species diversity index graph of odonates at various sub-catchments (N=4, Error 
Bar=±l SE). 
microcephalum, Ceriagrion cerinorubellum, Trithemis aurora, Ictinogomphus 
decoratus, and Prodasineura humeralis. Most of these species are open canopy 
species. Environmental variables that best described this group are locations at or 
close to forest edges (-FE) or/and open area (-OA), with less riparian canopy cover 
(-RCA), stream water with high temperature (Tern), high pH, and low ORP, stream 
with deep water channel. The second group of sites are mostly located along the main 
stream (stem channel) at the central or middle part of the Nee Soon catchment. Species 
