Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Current status of fish fauna and Zacco platypus population in the Cheonggyecheon stream

청계천의 어류상 및 피라미(Zacco platypus) 개체군 현황

  • Wang, Ju Hyoun (Department of Environmental Engineering, College of Science & Engineering, Sangji University) ;
  • Choi, Won Sub (Department of Biological Science, College of Science & Engineering, Sangji University) ;
  • Choi, Jun Kil (Department of Biological Science, College of Science & Engineering, Sangji University) ;
  • Lee, Hwang Goo (Department of Biological Science, College of Science & Engineering, Sangji University)
  • Received : 2021.02.06
  • Accepted : 2021.03.11
  • Published : 2021.03.31
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Abstract

This study aimed to present the current status of exotic fish species, invasive species, and dominant species inhabiting the Cheonggyecheon stream. We conducted three samplings from April to October 2019. A total of 2,045 individuals from 27 species belonging to nine fish families were collected. There were five Korean endemic species (18.5%) including Coreoleuciscus splendidus, Sarcocheilichthys nigripinnis morii, Squalidus gracilis majimae, Zacco koreanus, and Odontobutis interrupta in the Cheonggyecheon stream. The dominant species was Zacco platypus (62.4%) and the subdominant species was Z. koreanus (9.8%). The length-weight analysis of the dominant species Z. platypus population showed a regression coefficient b of 3.3434 and a condition factor(k) of 0.0026, with a positive slope. The growth state of the Z. platypus population was identified as being in a very favorable condition. The Cheonggyecheon stream is considered to be an appropriate habitat for the Z. platypus population. Since the restoration, The Cheonggyecheon stream has had continuous problems due to the introduction of exotic species and invasive species and in this study, exotic species, Gyrinocheilus aymonier var.(gold type), and invasive species, Coreoleuciscus splendidus, which have not previously been reported in the Cheonggyecheon stream, appeared. Therefore, it is deemed necessary to prepare continuous publicity and management measures to prevent exotic species and invasive species from inhabiting the Cheonggyecheon stream.

본 연구는 청계천에 서식하는 어류 서식 현황을 제시하고 피라미 개체군 분석을 통해 청계천의 외래종, 이입종 및 우점종 관리를 위한 기초자료를 제공하고자 수행하였다. 어류상 조사는 2019년 4월부터 10월까지 총 3회 실시하였으며, 조사 결과 총 9과 27종 2,045개체가 채집되었다. 한국고유종으로는 쉬리(Coreoleuciscus splendidus), 중고기(Sarcocheilichthys nigripinnis morii), 긴몰개(Squalidus gracilis majimae), 참갈겨니(Zacco koreanus), 얼룩동사리(Odontobutis interrupta) 등 5종(18.5%)이 출현하였다. 청계천의 우점종은 Zacco platypus (62.4%), 아우점종은 Z. koreanus (9.8%)로 확인되었으며, 우점종인 피라미 개체군의 길이- 무게 분석 결과 회귀계수 b값은 3.3434, 비만도지수(k)는 0.0026의 양의 기울기로 분석되었다. 따라서 피라미 개체군은 양호한 생육상태를 유지하고 있으며, 청계천은 피라미 개체군이 성장하기에 적합한 서식조건인 것으로 판단된다. 청계천은 복원 이후 지속적인 외래종과 이입종의 유입으로 인해 문제가 발생하고 있으며, 본 조사시에도 기존 청계천 내 서식이 보고되지 않은 외래종 골든알지이터(Gyrinocheilus aymonier var. (gold type))와 이입종 쉬리(C. splendidus)의 서식이 확인되었다. 따라서 청계천 내 발생하고 있는 외래종 및 이입종 유입 방지를 위한 지속적인 홍보와 관리방안 마련이 필요할 것으로 판단된다.

Keywords

Acknowledgement

본 연구는 서울시설공단 청계천관리처(과제번호: 201900310001, 청계천 어류 생태 모니터링 학술연구용역)의 지원을 받아 수행되었습니다.

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