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2024 Vol.11, Issue 1 Preview Page

Original Article

A Study on Fish Movement Efficiency in Biopolymer and Aggregate Mixed Fishway

피마자유기반 바이오폴리머와 골재를 혼합한 어도의 어류이동효율 실험연구

Dong-Jin Lee1
,
Min Ho Jang2
,
Joongu Kang3
,
Hong-Kyu Ahn3*
이 동진1
,
장 민호2
,
강 준구3
,
안 홍규3*
1Postdoctoral Researcher, Department of Hydro Science and Engineering Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Korea
2Professor, Department of Biology Education, College of Education, Kongju National University, Gongju-Si 32588, Korea
3Research Fellow, Department of Hydro Science and Engineering Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Korea
1한국건설기술연구원 수자원하천연구본부 박사후연구원
2공주대학교 생물교육과 교수
3한국건설기술연구원 수자원하천연구본부 연구위원
*Corresponding Author
31 March 2024. pp. 11-22
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Abstract

A fishway is an artificial waterway or device used to resolve difficulties in the movement of fish in a river. Most existing fishways are made of concrete and emit toxic substances, which has a negative impact on the river environment. Accordingly, there is a need to develop fishway construction technology that is eco-friendly and can increase movement efficiency. The technology presented in this study is an integrated porous structure that combines the aggregate with a biopolymer material extracted from castor oil, a non-toxic material. It is a fishway construction technology using eco-friendly materials that can allow vegetation to grow on the surface. In this study, an eco-friendly fishway mixed with biopolymer and aggregate was built on a real scale and the fish movement efficiency was tested and analyzed. As a result of the experiment, a total of 201 fish of 14 species were released with tags inserted, and the detection rate of released fish was confirmed to be 82.6% on average. A total of 40 fish of 6 species were transported upstream through the fishway, and the average passage rate was confirmed to be 21.7%. As a result of checking the circadian migration pattern, it was found that all fish mainly migrate during the day. It was confirmed that there was no significant functional difference between a fishway using biopolymer and a concrete fishway. It is believed that a fishway using biopolymer can be used as a replacement for a concrete fishway.

Keywords
Biopolymer
Detection rate
Eco-friendly fishway
Fish
Passage rate

어도는 하천에 어류의 이동이 곤란할 경우 이를 해소할 수 있도록 인위적으로 만들어진 수로 또는 장치이다. 기존 어도의 경우 대부분 콘크리트 제품으로 독성물질을 용출하여 하천환경에 부정적 영향을 미치고 있다. 이에 친환경적이고 이동효율을 높일 수 있는 어도 조성 기술 개발이 필요하다. 본 연구에서 제시된 기술은 골재와 골재사이를 무독성 소재인 피마자유에서 추출한 바이오폴리머 소재와 결합한 일체형 다공성 구조물로써 표면에 식생을 활착시킬 수 있는 친환경 소재를 활용한 어도 조성 기술이다. 이에 바이오폴리머와 골재를 혼합한 친환경어도의 어류이동효율에 대하여 실규모로 조성하여 실험, 분석하였다. 실험 결과 Tag를 삽입하고 방류된 어류는 총 14종 201개체였으며, 방류된 개체의 감지율은 평균 82.6%로 높은 것으로 나타났다. 어도를 통과하여 상류로 소상한 어류는 총 6종 40개체로 평균 통과율은 21.7%로 확인되었다. 일주기 이동패턴을 확인한 결과 모든 어류가 주간에 주로 이동하는 것으로 나타났다. 바이오폴리머를 활용한 어도와 콘크리트 어도의 기능적 차이가 크지 않은 것으로 판단되며, 바이오폴리머를 활용한 어도는 기존 콘크리트 어도를 대체해 사용할 수 있을 것으로 판단된다.

키워드
바이오폴리머
감지율
친환경어도
어류
통과율
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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 :1
  • Pages :11-22
  • Received Date : 2024-01-15
  • Revised Date : 2024-02-27
  • Accepted Date : 2024-02-27
  • DOI :https://doi.org/10.17820/eri.2024.11.1.011
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