Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Community Structure of Fish and Distribution Characteristics of Phoxinus phoxinus and Rhynchocypris kumgangensis in the Gihwacheon Stream of Namhangang River, Korea

남한강 지류 기화천의 어류 군집 구조 및 연준모치와 금강모치의 분포 특성

  • Jeon, Hyoung-Joo (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Baek, Jeong-Ik (Fisheries Resources Research Center, National Institute of Fisheries Science) ;
  • Kim, Kyung-Hwan (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Kim, Seung-Yong (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Lee, Wan-Ok (Fisheries Science Institute, Chonnam National University) ;
  • Kwak, Ihn-Sil (Fisheries Science Institute, Chonnam National University) ;
  • Song, Mi-Young (Inland Fisheries Research Institute, National Institute of Fisheries Science)
  • 전형주 (국립수산과학원 중앙내수면연구소) ;
  • 백정익 (국립수산과학원 수산자원연구센터) ;
  • 김경환 (국립수산과학원 중앙내수면연구소) ;
  • 김승용 (국립수산과학원 중앙내수면연구소) ;
  • 이완옥 (전남대학교 수산과학연구소) ;
  • 곽인실 (전남대학교 수산과학연구소) ;
  • 송미영 (국립수산과학원 중앙내수면연구소)
  • Received : 2019.05.18
  • Accepted : 2019.06.25
  • Published : 2019.06.30
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Abstract

This study was carried out from March to November, 2013 to investigate the fish community structure and distribution characteristics of Phoxinus phoxinus and Rhynchocypris kumgangensis appearing in Gihwacheon Stream, Pyeongchang. A total of 6 families and 19 species of fish emerged during the survey period. The dominant species were R. kumgangensis (Individuals 44.7%, Biomass 30.2%) and P. phoxinus (Individuals 27.7%, Biomass 15.9%). Endemic species were 10 species including Pseudopungtungia tenuicorpus, Coreoleuciscus splendidus, Hemibarbus mylodon, Gobiobotia brevibarba, Microphysogobio longidorsalis, R. kumgangensis, Zacco koreanus, Korecobitis rotundicaudata, Iksookimis koreensis and Coreoperca herzi. Endogenous species were P. tenuicorpus, G. brevibarba and P. phoxinus. Hemibarbus mylodon was a natural monument. Oncherhynchus mykiss was exotic species and translocated species was Oncorhynchus masou masou. The dominant species, R. kumgangensis, appeared at all survey sites. Except for St.6, the b value was more than 3.0 and the slope of K value showed positive correlation. P. phoxinus appeared in St. 3~St. 6 and St. 3 and St. 4 only showed stable populations.

본 연구는 평창의 남한강 지류 기화천에 출현하는 어류 군집 구조 및 Phoxinus phoxinus와 Rhynchocypris kumgangensis의 분포 특성을 파악하고자 2013년 3월부터 11월까지 조사하였다. 조사기간 동안 총 6과 19종의 어류가 출현하였으며, 개체수 및 생체량 우점종은 R. kumgangensis (Individuals 44.7%, Biomass 30.2%), 아우점종은 P. phoxinus (Individuals 27.7%, Biomass 15.9%)이었다. 고유종은 Pseudopungtungia tenuicorpus, Coreoleuciscus splendidus, Hemibarbus mylodon, Gobiobotia brevibarba, Microphysogobio longidorsalis, R. kumgangensis, Zacco koreanus, Korecobitis rotundicaudata, Iksookimis koreensis, Coreoperca herzi 등 10종이었고, 멸종위기종은 P. tenuicorpus, G. brevibarba, P. phoxinus 등 3종이었고, 천연기념물 Hemibarbus mylodon이 출현하였다. 양식용으로 국외에서 도입된 Onchorhynchus mykiss와 국내 이입종인 Oncorhynchus masou masou가 확인되었다. 우점종인 R. kumgangensis는 모든 조사지점에서 출현하였으며, St. 6을 제외하고 b값이 3.0 이상이고 K값의 기울기가 양의 상관성을 보였다. P. phoxinus는 조사지점 St. 3~St. 6에서 출현하였으며, St. 3과 St. 4에서만 안정적인 개체군 상태를 나타내었다.

Keywords

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