Appendix 1. Abundance (Ind./0.36m²) of benthic macroinvertebrates at the sampling sites

Scientific name/Site	1st				2nd
	St. 1	St .2	St. 3	St. 4	St. 1	St .2	St. 3	St. 4
Phylum Platyhelminthes
Class Turbellaria
Order Tricladida
Family Planariidae
Dugesia sp.		1.0			3.0
Phylum Mollusca
Class Gastropoda
Order Basommatophora
Family Lymnaeidae
Radix auricularia		78.0				19.0
Family Physidae
Physa acuta		110.0				7.0
Family Planorbidae
Gyraulus convexiusculus						1.0
Family Ancylidae
Laevapex nipponicus								6.0
Phylum Annelida
Class Oligocheata
Order Archioligocheata
Family Tubificidae
Limnodrilus gotoi		1.0	8.0	2.0				2.0
Class Hirudinia
Order Arhycobdellida
Family Erpobdellidae
Erpobdella lineata						1.0
Phylum Arthropoda
Class Crustacea
Order Amphipoda
Family Gammaridae
Gammarussp.					8.0			1.0
Order Decapoda
Family Atyidae
Caridina denticulata denticulata	2.0				1.0
Family Palaemonidae
Palaemon paucidens							3.0
Family Cambaridae
Cambaroides similis			11.0		1.0			4.0
Class Insecta
Order Ephemeroptera
Family Baetidae
Baetis fuscatus	8.0				13.0	6.0
Cloeon dipterum								1.0
Labiobaetis atrebatinus						1.0
Nigrobaetis bacillus								2.0
Family Heptageniidae
Ecdyonurus dracon					3.0			4.0
Family Ephemeridae
Ephemera strigata					1.0			2.0
Order Odonata
Family Coenagrionidae
Ischnura asiatica		1.0				2.0		1.0
Family Calopterygidae
Calopteryx atrata						1.0
Family Gomphidae
Davidius lunatus					4.0			1.0
Family Libellulidae
Sympetrum flaveolum	1.0			5.0
Order Hemiptera
Family Gerridae
Aquaris paludum				1.0
Order Coleoptera
Family Psephenidae
Eubrianax KUa								1.0
Family Chrysomelidae
Galerucella nipponensis								1.0
Order Diptera
Family Tipulidae
Tipula KUa					9.0	2.0
Family Dixidae
Dixa KUa						1.0
Family Culicidae
Anopheles sp.							1.0
Culex sp.							2.0
Family Simuliidae
Simulium sp.					2.0
Family Chironomidae
Tanypodinae sp.	1.0	2.0		1.0	6.0	9.0		3.0
Chironomidae sp. A	38.0	22.0					1.0
Chironomidae sp. B					3.0	13.0		2.0
Chironomidae sp.	6.0	57.0	43.0	2.0	13.0	5.0		2.0
Order Trichoptera
Family Hydroptilidae
Hydroptila KUa		1.0
Family Hydropsychidae
Cheumatopsyche brevilineata					8.0	2.0
Family Lepidostomatidae
Lepidostoma KUb					4.0	8.0		9.0
Family Calamoceratidae
Anisocentropus sp.				1.0				16.0
Family Leptoceridae
Mystacides KUa						3.0
총 39종	5	9	3	7	15	16	4	17
총 1,255개체	48	280	52	23	79	81	7	58

• Collected by qualitative sampling.