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ISSN : 2288-1115(Print)
ISSN : 2288-1123(Online)
Korean Journal of Ecology and Environment Vol.52 No.4 pp.285-292

Similarity of zooplankton community structure among reservoirs in Yeongsan-Seomjin River basin

Eui-Jeong Ko, Gu-Yeon Kim1,2, Gea-Jae Joo, Hyun-Woo Kim3,*
Department of Integrated Biological Science, Pusan National University, Busan 46241, Republic of Korea
1Department of Science Education, Kyungnam University, Changwon 51767, Republic of Korea
2School of Bioconvergence, Kyungnam University, Changwon 51767, Republic of Korea
33Department of Environmental Education, Sunchon National University, Suncheon 57922, Republic of Korea)
* Corresponding author: Tel: +82-61-750-3384, Fax: +82-61-750-3384


Our study was based on the long-term surveys with respect to the major reservoirs located in the Yeongsan and Seomjin river basins. A total of 45 survey sites have been surveyed four times a year from 2008 to 2017. We identified 166 zooplankton species, including 127 rotifers, 26 cladocerans, and 13 copepods. Mean population density and species number of small reservoirs were higher than those of mid and large reservoirs. Considering outliers exceeding the 90th percentile between species occupancy and mean abundance, 10 of 11 habitat generalists were rotifers, and Bosmina longirostris was the only cladoceran. Habitat specialist consisted of three species of rotifers and emerged from one to three survey sites. According to the modularity results, it was found that the survey sites covering the entire river basins were characterized into five groups, which was similar to the classification by maximum water surface areas (MWSA). The result of the eigenvector centrality showed that the size of MWSA had a greater impact on the similarity of zooplankton community structure between reservoirs than the difference in distance between reservoirs. In the case of survey points in near dam or estuary bank of Juam and Youngsan reservoirs, modularity class were separated from other internal survey points of those. Given that the zooplankton interactions may contribute to freshwater functions more than species diversity. These topological features provide new insight into studying zooplankton distribution patterns, their organization and impacts on freshwater-associated function.

영산강, 섬진강 수계 내 주요 저수지에 대한 동물플랑크톤 군집 구조의 유사성 분석

부산대학교 생명과학과, 1경남대학교 과학교육과, 2경남대학교 바이오융합학부, 3순천대학교 환경교육과