보성강 (寶城江) 및 이사천 (伊沙川) 수계의 (水系) 수서곤충 (水棲昆蟲) 군집에 (群集) 관한 연구 = Aquatic Insect Community structure in the Posong River System and Isa Stream in Chonnam , Korea

다국어 초록 (Multilingual Abstract)

The aquatic insect fauna and their community structure in the Poso＾˘ ng River System and Isa stream in Chonnam, Korea was studied from August 1987 to April 1988. The total number of taxa was 99 species, 54 genera, 22 families in 8 orders in the Poso＾˘ ong River System and 62 species, 39 genera, 21 families in 8 orders in the Isa stream. The major groups were Ephemeroptera and Trichoptera in two catchment. The fauna was dominated numerically by Ephemeroptera (47%) in the Posoo＾˘ ng River System and by Trichoptera (61%) in the Isa stream. Ephemeroptera, Trichoptera and Diptera were relatively more abundent during the spring season. Mostly Dominant species belonged to Ephemeroptera and Trichoptera in the Posoo＾˘ ng River System and in the Isa stream was Hydropsyche orientalis. Dominant indices ranged from 0.19 to 0.95 in the surveyed stream. Species diversity indices showed 1.97-3.45 in studied stream.