2025 Volume 51 Issue 1 Pages 103-108
Dragonfly larvae in ponds are known to use aquatic plants as foraging, hiding and hatching sites, but it is less clear whether there are specific aquatic plant species that affect the abundance of each dragonfly species. In this study, we investigated the local environment (aquatic plants and water quality) and the surrounding environment (e.g. forest and agricultural land coverage) affecting the populations of 26 dragonfly larval species in 10 ponds in the Sapporo suburban area, and analysed them using GLMM, focusing on each species as well as coverage and growth type of waterweeds. The results suggest that there is a significant correlation between the coverage of specific aquatic plant species and specific dragonfly larval populations in six of the eight species that could be modelled. It was also found that Phosphorus as phosphate (PO4-P) was negatively correlated with damselfly larval abundance in the suborder Damselfly.
