Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Community Composition on Stream Benthic Macroinvertebrate in Daegu

대구 일대 하천 저서성 대형무척추동물의 수계별 군집구성

  • Kwak, Inn-Sil (Faculty of Marine Technology, Chonnam National University) ;
  • Jeong, Sun-Ae (Faculty of Marine Technology, Chonnam National University) ;
  • Jeong, Gyeong-Suk (Faculty of Marine Technology, Chonnam National University)
  • 곽인실 (전남대학교 해양기술학부) ;
  • 정선애 (전남대학교 해양기술학부) ;
  • 정경숙 (전남대학교 해양기술학부)
  • Published : 2008.03.30
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Abstract

The benthic macroinvertebrates of stream around Mt. Innae, Mt. Gumi and Mt. Dodung in Daegu were studied between April and September in 2005. Physico-chemical factors such as depth, velocity, pH, conductivity and DO were measured in each study site. The depth distributed from 3.3 cm to 18.6 cm, conductivity from 35.5 to 223.1${\mu}s$, and DO between 5.66 and 10.73$mgL^{-1}$. Total observed species of benthic macroinvertebrates were 78 in study streams. The first dominant family was Chironomidae, occupying from 59 to 65%. The other dominant families were Ephemeroptera (12$\sim$19%) and Gastropoda (5$\sim$14%). Mt. Innae was observed as having the most abundance species. EPT (Ephemeroptera, Plecoptera, Trichoptera) richness were from 4 to 14.

영천, 경주 지역의 도덕산, 구미산, 인내산 주위의 주요 수계 하천의 중 상류 11$\sim$12개 지점에서 저서성 대형 무척추동물을 조사하였다. 수심, 유속, pH, 탁도(NTU), 전기전도도와 DO 등의 이화학적 환경도 측정하였다. 수심은 3.3$\sim$18.6 cm, 전기전도도는 35.5$\sim$223.1${\mu}s$, DO는 5.66$\sim$10.73 $mgL^{-1}$의 분포를 보였다. 대상 조사지점에서 총 78종이 출현하였으며, 수서곤충이 주로 채집되었다. 깔따구류가 전 출현개체수의 59$\sim$65%를 차지하여 가장 많이 조사되었으며, 다음으로는 하루살이류가 12$\sim$19%, 달팽이류가 5$\sim$14%를 차지한 것으로 조사되었다. 조사지점 중에서는 인내산이 가장 다양한 생물이 서식한 것으로 조사되었다. EPT 풍부도는 4$\sim$14로 나타났으며 인내산의 IN2, IN3지점에서 14를 보여 가장 높게 나타난 반면 가장 낮게 나타난 곳은 도덕산의 DD2, DD4지점으로 조사되었다.

Keywords

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