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2024 Vol.36, Issue 1 Preview Page

Research Article

Marinification of Lake Yeongrang as Confirmed through Fish Community Analysis

어류군집 분석을 통해 확인한 영랑호의 해양화

Doupyo Hong1
,
Jaehoon Kim1
,
Bumjun Kim2
,
Kwangyall Lee3
,
Hekap Kim4
,
Yunhee Kim5
,
Jaeseok Choi5*
홍 두표1
,
김 재훈1
,
김 범준2
,
이 광열3
,
김 희갑4
,
김 윤희5
,
최 재석5*
1MS Student, Department of Environmental Science, Kangwon National University, Chuncheon 24341, Korea
2Researcher, Institute of Environmental Research, Kangwon National University, Chuncheon 24341, Korea
3Researcher, Nature & Human Co, Wonju 26424, Korea
4Professor, School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Korea
5Research Professor, Institute of Environmental Research, Kangwon National University, Chuncheon 24341, Korea
1강원대학교 자연과학대학 환경학과 석사과정
2강원대학교 환경연구소 연구원
3(주) 자연과 사람 연구원
4강원대학교 농업생명과학대학 환경융합학부 교수
5강원대학교 환경연구소 연구교수
*Corresponding Author
31 March 2024. pp. 37-53
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Abstract

In this study, we focused primarily on analyzing the fish community in Lake Yeongrang, a representative lagoon in Korea, aiming to investigate changes in the aquatic ecosystem of this lake by comparing the fish community surveyed before 2009 with the conditions observed after that year. For this purpose, four surveys were conducted from December 2022 to October 2023 at five different locations, collecting a total of 3,498 individuals from 26 families and 42 species. A comparison with past data revealed significant changes in the composition of primary freshwater fish, peripheral freshwater fish, and seawater fish. Regarding species, the research findings indicated notable differences compared with past data. The percentage of primary freshwater fish was 10% lower, that of peripheral freshwater fish was 20% lower, and that of seawater fish showed an increase of over 30% compared to past data. A similar pattern was observed when considering individual counts. Primary freshwater fish exhibited a decrease of 12%, peripheral freshwater fish decreased by over 5%, and seawater fish showed an increase of more than 16% compared to previous data. Therefore, the aquatic ecosystem of Lake Yeongrang appears to have undergone significant marinification, largely owing to human-induced interventions. The distinctive function of the lagoon, characterized by material cycling influenced by the breaking sandbar, has been substantially compromised. Additionally, the aquatic ecosystem of Lake Yeongrang was affected by the installation of a floating bridge. Therefore, continuous monitoring and research are required.

Keywords
Brackish water lake
Breaking-sandbar
Human-induced interventions
Peripheral freshwater fish
Seawater fish
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Information
  • Publisher :Agriculture and Life Sciences Research Institute, Kangwon National University
  • Publisher(Ko) :None
  • Journal Title :Journal of Agricultural, Life and Environmental Sciences
  • Journal Title(Ko) :농업생명환경연구
  • Volume : 36
  • No :1
  • Pages :37-53
  • Received Date : 2024-02-14
  • Revised Date : 2024-03-06
  • Accepted Date : 2024-03-08
  • DOI :https://doi.org/10.22698/jales.20240004
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