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논문 기본 정보

자료유형
학술저널
저자정보
김윤희 (강원대학교) 이재용 ((주)자연과사람) 장창원 (한국수환경관리연구소) 최재석 (강원대학교 환경연구소) 김영길 ((주)그린환경연구소) 허우명 (강원대학교) 박은경 (상지대학교 환경조경학과) 천재룡 ((주)자연과사람)
저널정보
강원대학교 농업생명과학연구원(구 농업과학연구소) 농업생명환경연구 농업생명환경연구 제35권 제1호
발행연도
2023.3
수록면
98 - 110 (13page)

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초록· 키워드

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In this study, we conducted 12 seasonal surveys between 2016 and 2018 to understand spatial and temporal fluctuations of the zooplankton community structure in Lake Doam when exposed to the effects of surface discharge. The total number of species identified was 29 in 2016, 34 in 2017, and 25 in 2018. The total abundances were 1,942.3 ind/L (70.9 ind/L-374.1 ind/L) in 2016, 2,852.6 ind/L (47.2 ind/L–906.5 ind/L) in 2017, and 985.5 ind/L (10.4 ind/L–312.5 ind/L) in 2018. The fluctuations in community structure during the study period were related to the inflow of turbid water due to monsoon rainfall, which formed a thick layer of turbid water. This layer first formed in Lake Doam during the summer in 2016 and 2017 and persisted into the following year. Consequently, the community structure of zooplankton changed toward smaller species. Rotifera was the dominant phylum, with the most common zooplanktons (33 species; 68.8%), followed by Copepoda (8; 16.7%), Cladocera (4; 8.3%), and Protozoa (3; 6.3%). A clear water phase, with a weak turbid layer and stable thermal stratification, was only observed in June 2017, which resulted in the dominance of Daphnia galeata. Therefore, the structural changes in zooplankton communities in Lake Doam seem to be related to hydraulic and hydrological factors such as rainfall patterns and the duration of a turbid water layer. The change in the zooplankton community structure would be a useful indicator for reflecting turbidity duration and discharge characteristics in lake ecosystems. The emergence of macrozooplankton may also be a good indicator for determining the water quality characteristics of lake ecosystems.

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