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ISSN : 2288-1115(Print)
ISSN : 2288-1123(Online)
Korean Journal of Ecology and Environment Vol.52 No.4 pp.348-357

Change of Benthic Macroinvertebrates Community Composition Following Summer Precipitation Variance

Hong Cheol1,2, Won-Seok Kim2, Jin-Young Kim3, Seong-Yu Noh1, Ji-Hyung Park1, Jae-Kwan Lee1, Ihn-Sil Kwak2,*
1National Institute Environmental Research, Incheon 22689, Republic of Korea
2Division of Marine Technology, Chonnam National University, Yeosu 59626, Republic of Korea
3National Institute of Ecology, Research Center for Endangered Species, Republic of Korea
* Corresponding author: Tel: +82-61-659-7148, Fax: +82-61-659-7149


To investigate the changes of dominant species of benthic macroinvertebrates following summer precipitation variance, we surveyed twenty five sites of the main Seomjin River in May and September in 2014 and 2015. The temperature, precipitation, water quality factors and substrate composition, water depth and flow velocity, which are important factors in benthos habitat environment, were collected and measured. There is not much difference of the cumulative precipitation (CP) between 2014 (2,322.1 mm) and 2015 (2,371.0 mm) in May. However CP in september was decreased by more than half in 2015 (3,726.1 mm) than 2014 (7,678.2 mm). Due to washing effect by summer precipitation, total number of species and individuals for benthic macroinvertebrates were higher in May than in September. Chironomidae spp. and Choroterpes altioculus were dominated in May, Ecdyonurus levis, Ecdyonurus kibunensis were dominated in September. As a result of correlation analysis between community indices and environment factors, it was found that there is a significant correlation with flow velocity and substrate compositions. According to the results of cluster analysis and PCA based on environment fators and dominant species of benthic macroinvertebrates in Seomjin River, it was divided into four groups following CP and MT. Ecdyonurus levis and Ecdyonurus kibunensis reflect the effect of the decrease in summer precipitation.

여름철 집중 강우량 변동에 의한 저서성 대형무척추동물 군집구성의 변화

홍 철1,2, 김원석2, 김진영3, 노성유1, 박지형1, 이재관1, 곽인실1,*
1국립환경과학원 물환경연구부, 2전남대학교 해양기술학부 환경해양학전공, 3국립생태원 멸종위기종복원센터