A Site-Specific Evaluation of Streamflow-Fish Assessment Index (FAI) Relationships for Identifying Long-Term Monitoring Sites

Ji Youn Sung

doi:10.17820/eri.2025.12.4.338

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2025 Vol.12, Issue 4 Preview Page Next Page

Original Article

A Site-Specific Evaluation of Streamflow-Fish Assessment Index (FAI) Relationships for Identifying Long-Term Monitoring Sites 하천유량-어류건강성평가지수 관계를 통한 장기모니터링 지점 선정 고찰

31 December 2025. pp. 338-342

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Abstract

This study selected eight river sites from the biomonitoring network operated by the National Institute of Environmental Research (NIER), where the Fish Assessment Index (FAI) is routinely measured, to analyze the relationship between streamflow conditions and FAI and to identify sites suitable for long-term biological monitoring. The 7-day minimum flow (MinQ7) was used as a representative low-flow indicator, and the correlation between flow variablilty and fish community health was examined. Although the relationship between MinQ7 and FAI was weak or statistically insignificant at most sites, a statistically significant negative correlation was identified at the Gokgyocheon-2 site. This indicates that low-flow conditions exert a more direct influence on fish assemblages at this site compared to others, suggesting its potential suitability as a representative location for future verification of ecological responses to low-flow conditions and for long-term monitoring. This study demonstrates the value of integrating hydrological characteristics into biomonitoring network analyses and provides useful baseline information for Environmental Impact Assessment that evaluate the ecological effects of flow variation. By applying a simple statistical framework, we propose a process for identifying monitoring sites suitable for long-term assessment of hydro-ecology relationships. The findings also highlight the need for further research on the impacts of anthropogenic flow variability on biological monitoring networks.

Keywords

Biomonitoring network

Environment impact assessmnet

Fish assessment index (FAI)

Streamflow

본 연구는 유량 변동성과 어류 건강성간의 상관성을 분석하기 위해 국립환경과학원이 어류건강성평가지수(FAI)를 제공하는 지점 중 8개 하천 지점을 선정 후, 하천 유량 조건과 FAI간의 관계를 분석하여, 지점별 생태 반응 특성을 평가하고 장기 생물 모니터링에 적합한 지점을 도출하고자 하였다. 하천유량으로 저유량 지표인 7일 최소유량(MinQ7)을 활용하였으며, 대부분의 지점에서 하천 저유량과 FAI 간의 관계가 약하거나 통계적으로 유이하지 않은 것으로 나타났으나, 곡교천2 (Gokgyocheon-2) 지점에서는 통계적으로 유의한 음의 상관관계가 확인되어, 다른 지점에 비해 저유량 영향이 어류군집에 직접적인 영향을 보이는 것으로 나타났으며, 향후에도 저유량 생태반응 검증과 장기 모니터링을 위한 대표지점으로 활용가능성을 검토할 수 있음을 보여준다. 본 연구는 생물 측정망 모니터링에 수문 특성을 연계하여 분석하는데 의미가 있을 것으로 판단되며, 유량변화가 생태계에 미치는 영향을 평가하는 환경영향평가 단계에 유용한 기초자료를 제공한다. 본 연구는 간단한 통계적 분석 방법을 통해 수문-생태 영향 관계를 지속적으로 모니터링 할 수 있는 지점의 선정 과정을 제안하였으며, 향후 인위적인 유량 변동에 따른 생물측정망 영향에 대한 추가 연구의 필요성을 제시한다.

키워드

생물측정망

환경영향평가

어류 건강성평가지수

하천유량

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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 : 12
No :4
Pages :338-342
Received Date : 2025-12-03
Revised Date : 2025-12-10
Accepted Date : 2025-12-10
DOI :https://doi.org/10.17820/eri.2025.12.4.338

Ecology and Resilient Infrastructure ISSN:2288-8527(Online) 응용생태공학회 논문집

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