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2019 Vol.6, Issue 1

Original Article

Impact on Fish Community by Restoration of Ecological Waterway using Physical Habitat Simulation

물리서식처 분석을 통한 생태 물길 복원이 다양한 군집종에 미치는 영향

Heung Sik Choi1
,
Jonggeun Choi2
,
Byungwoong Choi3*
최 흥식1
,
최 종근2
,
최 병웅3*
1Professor, Department of Civil Engineering, Sangji University, Wonju 26339, Korea
2Master Student, Department of Civil Engineering, Sangji University, Wonju 26339, Korea
3Visiting Academic, School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia
1상지대학교 토목공학과 교수
2상지대학교 토목공학과 석사과정
3뉴캐슬대학교 공과대학 박사후연구원
* Corresponding Author
31 March 2019. pp. 1-11
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Abstract

This study performed the impact of ecological waterway on fish community in a reach of the Dal River, Korea. Fish monitoring revealed that 9 fish species are dominant, namely Zacco platypus, Coreoleuciscus splendidus, Zacco koreanus, Pungtungia herzi, Acheilognathus yamatsutae, Rhinogobius brunneus, Tanakia signifer, Gobiobotia macrocephala, and Pseudopungtungia tenuicorpus, and account for 95% of the total fish community. The River2D model was used for the computation of the flow and the HSI model for the habitat simulation. The restoration of the waterway performed through the small dam removal, the formation of the pool-riffle structure, and the change of the bed elevation and width. Simulation results indicated that the restoration of the ecological waterway effects significantly increased by about 16% for the WUA (Weighted Usable Area) of the total fish community in optimal ecological flow conditions (Q=7.0 m3/s). The restoration of the ecological waterway is more advantageous to fish community.

Keywords
Fish community, Habitat suitability curve, Physical habitat simulation, Restoration of the ecological waterway, Weighted Usable Area

본 연구는 생태 물길 복원 조성에 따른 어류 군집종에 미치는 영향을 파악하기 위하여 물리 서식처 분석을 수행하였다. 대상 어종은 피라미, 쉬리, 참갈겨니, 돌고기, 줄납자루, 밀어, 묵납자루, 꾸구리, 가는돌고기로 선정하였으며, 총 9개 어종으로 달천 내 서식하는 어류 중 95%를 차지한다. 흐름 분석은 2차원 모형인 River2D 모형을 사용하였으며, 서식처 분석은 서식처 적합도 곡선을 이용하는 서식처 적합도 모형을 사용하였다. 생태 물길 복원은 하도 내 위치한 돌보 철거 및 여울-소 구조 조성과 하상고 및 하폭의 변화를 통하여 조성하였다. 그 결과 생태 물길 복원 조성을 통하여 최적의 환경 생태 유량 조건 (Q=7.0 m3/s)에서 총 9종 군집종의 가중가용면적을 약 16% 향상시키는 것으로 나타났다. 이를 통하여 생태 물길 복원 조성이 하천 내 서식하는 다양한 군집종에 대하여 매우 유용한 방법임을 확인할 수 있다.

키워드
군집종, 서식처 적합도 곡선, 물리 서식처 분석, 생태 물길 복원 조성, 가중가용면적
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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 : 6
  • No :1
  • Pages :1-11
  • Received Date : 2019-01-25
  • Revised Date : 2019-02-11
  • Accepted Date : 2019-03-31
  • DOI :https://doi.org/10.17820/eri.2019.6.1.001
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