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2024 Vol.11, Issue 4 Preview Page

Original Article

Analysis of the Relationship Between Turbidity and Benthic Macroinvertebrate Communities in the Upper Stream of Soyang River Dam

소양강댐 상류 탁도와 저서성 대형무척추동물 군집의 관계 분석

Mikyoung Choi1
,
Jewan Ryu2
,
Jongho Ahn3*
최 미경1
,
류 제완2
,
안 종호3*
1Research Fellow, Korea Environment Institute, Sejong 30147, Korea
2Senior Researcher, K-Water Research Institute, Daejeon 34045, Korea
3Chief Research Fellow, Korea Environment Institute, Sejong 30147, Korea
1한국환경연구원 통합물관리연구실 부연구위원
2K-water연구원 AI연구센터 선임연구원
3한국환경연구원 통합물관리연구실 선임연구위원
*Corresponding Author
31 December 2024. pp. 219-228
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Abstract

This study aims to analyze the impact of turbidity on aquatic ecosystems by proposing turbidity-related and ecosystem-related variables and conducting correlation analyses. The study area includes the upper stream of Soyanggang Dam (Inbukcheon, Naerincheon, and Soyanggang) utilizing turbidity data and biomonitoring data for benthic macroinvertebrates. Appropriate variables for analysis were proposed, and correlation analyses were performed. The results indicate that among turbidity-related variables, cumulative turbidity can serve as a representative metric. As cumulative turbidity increases, the population density of functional feeding groups such as Collector-Filters, Collector-Gatherers, and Scrapers tends to decrease. Additionally, the population densities of Ephemeroptera (mayflies) and Trichoptera (caddisflies) also decline. Conversely, as cumulative turbidity increases, the proportional density of Ephemeroptera rises, suggesting an increase in the relative abundance of Collector-Gatherers, whereas the proportions of Collector-Filters and Scrapers decrease. Future research involving reliability analysis of the data and an expansion of study areas is necessary to contribute to the development of evaluation techniques for assessing the impacts of turbidity on aquatic ecosystems.

Keywords
Turbidity concentration
Duration
Benthic macroinvertebrates
Ephemeroptera
Collector-Gatherers

본 연구는 환경부에서 제공하는 생물측정망 데이터를 활용하여 탁수가 수생태계에 미치는 영향을 분석하기 위하여, 소양강댐 상류를 대상으로 탁수와 저서성 대형무척추동물 군집의 상관분석을 수행하였다. 탁수 관련 변수로는 생물조사 시기 탁도 농도, 생물조사 시기 이전 6개월 간 탁도의 농도와 지속시간을 고려한 탁도누적합, 탁도 20, 40, 100 NTU 초과 기간, 탁도 최대값을 사용하였다. 저서성 대형무척추동물 군집에 관련된 변수로는 총 개체밀도 및 종수, 섭식 별, 무리 별 개체밀도 및 개체비율로 설정하였다. 상관분석 결과, 탁도와 저서성대형무척추동물 군집 간의 높은 상관관계를 도출하는 것은 어려웠으나 일부 변수에서 유의한 상관관계가 확인되었다. 탁도누적합이 증가할수록 주워먹는 무리(Collector-Gatherers), 걸러먹는 무리(Collector-Filerers), 긁어먹는 무리(Scrapers), 하루살이목(Ephemeroptera), 날도래목(Trichoptera)의 개체밀도는 감소하는 경향을 보였다. 반면 탁도 증가와 하루살이목의 개체밀도 점유 비율은 약한 상관성을 보였으나 통계적으로 유의한 증가 경향을 나타냈다. 본 연구는 향후 데이터 신뢰도 분석 및 연구 대상 지역 확대를 통하여 탁수에 의한 수생태계 영향 평가 기술 개발에 기여하고자 한다.

키워드
탁도 농도
지속시간
저서성대형무척추동물
하루살이목
주워먹는 무리
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Information
  • Publisher :Korean Society of Ecology and Infrastructure Engineering
  • Publisher(Ko) :응용생태공학회
  • Journal Title :Ecology and Resilient Infrastructure
  • Journal Title(Ko) :응용생태공학회 논문집
  • Volume : 11
  • No :4
  • Pages :219-228
  • Received Date : 2024-12-04
  • Revised Date : 2024-12-19
  • Accepted Date : 2024-12-24
  • DOI :https://doi.org/10.17820/eri.2024.11.4.219
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