Table 4. Dominant species of benthic macroinvertebrates at each sampling sites

Site\Dominance	1st dominant species (%)		2nd Dominant species (%)
St. 1	Gammarus sp.	40.4	Epeorus nipponicus	21.2
St. 2	Epeorus nipponicus	22.4	Hydropsyche orientalis	19.4
St. 3	Epeorus nipponicus	32.7	Hydropsyche kozhantschikovi	22.5
St. 4	Epeorus nipponicus	22.5	Epeorus pellucidus	20.2
St. 5	Hydropsyche orientalis	14.8	Davidius lunatus	11.1
St. 6	Epeorus pellucidus	40.3	Hydropsyche kozhantschikovi	16.9
Total	Epeorus nipponicus	19.4	Epeorus pellucidus	13.1