Abstract
Benthic macroinvertebrates fauna was investigated at the Mt. Umyeon, Seoul, Korea, from July to September, 2012. Umyeon(Reg. 1) and Seoul Arts Center(Reg. 2) were selected for quantitative (Dredge, 50×50cm, mesh size 1mm) and qualitative(Hand net) sampling of benthic macroinvertebrates. Including qualitative sampling, total 26 species occurred. They were composed of 1 species in Planariidae, 1 species in Lymnaeidae, 1 species in Gammaridae, 2 species in Ephemeroptera, 2 species in Odonata, 1 species in Plecoptera, 7 species in Hemiptera, 2 species in Coleoptera, 8 species in Diptera, 1 species in Trichoptera. Total taxa of benthic macroinvertebrates collected by quantitative sampling were 19 species, 10 families, 7 orders, 2 classes, and 1 phyla. The dominant species and the subdominant species based on abundance was Chironomidae sp. 1 and Cloeon dipterum with 45.6% and 19.0% of dominance respectively. Diversity index and richness index of benthic macroinvertebrates showed the range of 2.62∼1.76 and 1.95∼1.39 respectively.
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