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2022 Vol.64, Issue 4 Preview Page
Physical Habitat Assessment of Bokha Downstream Reach Considering Life Cycle Stages of Zacco platypus Using PHABSIM

PHABSIM을 이용한 복하천 하류 구간의 피라미 생애주기별 물리적 서식처 평가

Hyeokjin Leea
,
Jinseok Parkb
,
Seongju Jangc
,
Rokgi Hongd
,
Inhong Songe†
이 혁진a
,
박 진석b
,
장 성주c
,
홍 록기d
,
송 인홍e†
aMS Student, Department of Rural Systems Engineering, Seoul National University
bPh.D. Student, Department of Rural Systems Engineering, Global Smart Farm Convergence Major, Seoul National University
cMS Student, Department of Rural Systems Engineering, Global Smart Farm Convergence Major, Seoul National University
dUndergraduate Student, Department of Rural Systems Engineering, Seoul National University
eAssociate Professor, Department of Rural Systems Engineering, Research Institute of Agriculture and Life sciences, Global Smart Farm Convergence Major, Seoul National University
a서울대학교 농촌시스템공학과 석사과정 학생
b서울대학교 농어촌시스템공학과 박사과정 학생, 글로벌 스마트팜 융합전공
c서울대 글로벌 스마트팜 융합전공 농촌시스템공학과 학생
d서울대학교 농촌시스템공학과 학부생
e서울대학교 농생명과학연구소 농어촌시스템공학과 부교수
† Corresponding author Tel.: 010-5106-7664 E-mail: inhongs@snu.ac.kr
2022. pp. 55-64
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Abstract

The objectives of this study were to assess physical habitat suitability of fish species for different life cycle stages and to suggest appropriate ecological stream flows in a Bokha downstream reach. A dominant species of Zacco platypus was selected as the study fish of which three stages of spawning, juvenile and adult in life cycle were considered into assessment. The stream hydraulic environment was calibrated with HEC-RAS before the PHABSIM simulation. The hydraulics of flow velocity and depth were used to estimate Weighted Usable Area (WUA) by multiplying respective habitat suitability indices with stream area. Overall the WUAs tend to be great in gentle slopes with relatively shallow water depth regions. Maximum WUAs, ie, candidate for ecological flow rates were 1 m3/s, 7 m3/s and 8 m3/s for the respective spawning, juvenile and adult stages of Zacco platypus. Since the ecological flow rates for juvenile and adult stages appeared to be is greater than the abundant flow rate (3.67 m3/s) for the study reach, additional water supply may be needed but should be cautious to avoid the spawning period of Apr through May from the stream water management perspective.

Keywords
PHABSIM
Habitat suitability
Weighted Usable Area (WUA)
Ecological flow
Zacco platypus
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Information
  • Publisher :The Korean Society of Agricultural Engineers
  • Publisher(Ko) :한국농공학회
  • Journal Title :Journal of Korean Society of Agricultural Engineers
  • Journal Title(Ko) :한국농공학회논문집
  • Volume : 64
  • No :4
  • Pages :55-64
  • Received Date : 2022-06-16
  • Revised Date : 2022-07-08
  • Accepted Date : 2022-07-12
  • DOI :https://doi.org/10.5389/KSAE.2022.64.4.055
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