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2025 Vol.12, Issue 4 Preview Page

Original Article

Effects of Environmental Factors on Fish Biodiversity in a Small-Sized Urban Stream

소형 도시하천에서 환경 요인이 어류 종 다양성에 미치는 영향

Gyurin Lee1
,
Seunghwan Park2
,
Sunam Kim2
,
Jeongwon Lee2
,
Min Heo2
,
Seoghyun Kim3*
이 규린1
,
박 승환2
,
김 수남2
,
이 정원2
,
허 민2
,
김 석현3*
1Bachelor’s Course, Department of Biological Sciences, Kangwon National University, Chuncheon 24341, Korea
2Master’s Course, Department of Biological Sciences, Kangwon National University, Chuncheon 24341, Korea
3Assistant Professor, Department of Biological Sciences, Kangwon National University, Chuncheon 24341, Korea
1강원대학교 생명과학과 학부과정
2강원대학교 생명과학과 석사과정
3강원대학교 생명과학과 조교수
*Corresponding Author
31 December 2025. pp. 207-220
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Abstract

Small-sized urban streams often exhibit reduced biodiversity patterns due to multiple disturbances and habitat degradation. To identify key environmental factors affecting fish diversity, which can provide insight into ecosystem management and restoration actions in urban streams, we investigated Mancheon Stream, a small-sized urban stream located at Chuncheon, Gangwon State, Korea. Fish sampling and environmental measurement were conducted at 17 sites from headwater to confluence with Soyang River between November 2023 and August 2024. A total of 23 species belonging to 7 families were collected during the study period. Results of a hierarchical cluster analysis and a non-metric multidimensional scaling showed that 17 study sites were categorized by three groups, while both species richness and diversity indexes increased gradually in the downstream direction. The result of a linear mixed-effects model revealed that fish diversity increased with the size of the stream and was associated positively with in-channel vegetation. In addition, lotic habitats, such as runs and riffles, were also an important component for increasing fish diversity. Our results highlight that establishing natural physical habitats would be a key step for successful management and restoration of aquatic biodiversity in small-sized urban streams.

Keywords
Biodiversity
Fish community
Freshwater fish
Restoration ecology
Urban stream

도시지역을 관류하는 소형 하천은 다양한 교란 및 훼손에 의해 낮은 생물 다양성을 가진다. 따라서 소형 도시하천에서 종 다양성에 영향을 주는 핵심적인 환경 요인을 분석함으로써 도시 생태계 건강성 회복 및 복원을 위한 연구가 시급한 실정이다. 본 연구는 강원특별차지도 춘천시에 위치한 소형 도시하천인 만천천에서 환경이 어류의 종 다양성에 미치는 영향을 연구하였다. 만천천 상류부터 소양강 합류지점까지 17개 조사지점에서 2023년 11월부터 2024년 8월까지 어류 조사 및 환경 측정을 수행하였다. 조사기간 동안 출현한 어류는 7과 23종이었다. 계층적 군집분석(hierarchical cluster analysis)과 비모수다차원척도법(non-metric multidimensional scaling)을 사용하여 어류군집 구조를 분석한 결과, 조사지점은 3개의 집단으로 구분되었으며 종 풍부도와 종 다양도는 하류로 갈수록 높아짐을 확인하였다. 선형 혼합 모형(linear mixed-effect model)을 사용하여 환경 요인이 어류 종 다양성에 미치는 영향을 분석한 결과, 하천의 규모가 커질수록 종 다양성이 높아지는 동시에 하도 내 식생이 발달할수록 종 풍부도와 종 다양도가 증가하는 경향을 확인하였다. 또한 물 흐름이 있는 유수환경 조성이 종 다양성 증가에 중요한 역할을 했다. 본 결과는 자연적인 환경 조성을 통해 어류 서식처를 제공하는 것이 도시하천 생태계 복원 및 생물 다양성을 보전하는 데에 있어 중요하다는 것을 보여주고 있다.

키워드
생물 다양성
어류군집
담수어류
복원생태학
도시하천
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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 :207-220
  • Received Date : 2025-10-02
  • Revised Date : 2025-11-24
  • Accepted Date : 2025-12-02
  • DOI :https://doi.org/10.17820/eri.2025.12.4.207
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