Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Characteristics of Fish Communities in Namyang Lake and its Tributaries in the Estuary of Han River Watershed, South Korea

한강수계 하구호 남양호와 유입하천의 어류군집 특성

  • Kwak, Yeong-Ho (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Kim, Seung-Young (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Song, Ha-Yun (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Jeon, Hyoung-Joo (Inland Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Song, Mi-Young (Inland Fisheries Research Institute, National Institute of Fisheries Science)
  • 곽영호 (국립수산과학원 중앙내수면연구소) ;
  • 김승용 (국립수산과학원 중앙내수면연구소) ;
  • 송하윤 (국립수산과학원 중앙내수면연구소) ;
  • 전형주 (국립수산과학원 중앙내수면연구소) ;
  • 송미영 (국립수산과학원 중앙내수면연구소)
  • Received : 2020.11.23
  • Accepted : 2021.01.21
  • Published : 2021.03.31
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Abstract

Fish community characteristics was investigated in Namyang Lake and tributaries in Han River basin, Korea from April to October 2015. During the period, there were 5,672 individuals of 20 species appeared from tributaries (St. 1~St. 6) and dominant species were Pseudorasbora parva (33.5%). Also 5,672 individuals of 20 species appeared in Namyang Lake (St. 7~St. 9) and dominant species were Carassius auratus (32.2%). There were 5 species of endemic species with Rhodeus uyekii, Acanthorhodeus gracilis, Squalidus japonicus coreanus, Abbottina springeri and Odontobutis interrupta from Namyang Lake watershed. The frequency of endemic species were higher tributaries (18.5%) than Namyang Lake (15%). Exotic species were 3 species with Carassius cuvieri, Lepomis macrochirus, and Micropterus salmoides. there were appeared more frequently Namyang Lake (15.0%) than tributaries(7.4%).

2015년 4월부터 10월까지 남양호 유역의 어류군집 특성을 밝히기 위해 유입하천을 포함한 9개 지점에서 조사하였다. 남양호 유입하천(St. 1~St. 6)에서 27종 5,899개체가 출현하였으며 우점종은 참붕어 Pseudorasbora parva(33.5%)로 나타났다. 남양호 (St. 7~St. 9)에서는 20종 5,672개체가 출현하였으며 우점종은 붕어 Carassius auratus (32.2%)로 나타났다. 남양호 유역에서 츨현한 고유종은 각시붕어 Rhodeus uyekii, 가시납지리 Acanthorhodeus gracilis, 몰개 Squalidus japonicus coreanus, 왜매치 Abbottina springeri, 얼룩동사리 Odontobutis interrupta 5종으로 유입하천에서 전체 출현 종의 18.5%, 남양호에서 15%로 유입하천에서 고유종의 빈도가 높게 나타났다. 외래종은 떡붕어 Carassius cuvieri, 블루길 Lepomis macrochirus, 배스 Micropterus salmoides가 출현하였으며 유입하천에서 전체 출현 종의 7.4% 남양호 15.0%로 호소 내에서의 외래종의 빈도가 높게 나타났다.

Keywords

Acknowledgement

본 연구는 2021년도 국립수산과학원 수산시험연구사업(R2021036)의 지원으로 수행되었습니다.

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