제주 신양리 연안 인공어초 주변해역에서 서식하는 어류의 종조성 및 계절변동
Seasonal variation and species composition of fish species in artificial reefs in the Shinyang-Ri coastal waters off Jeju island, Korea
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참고문헌
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초록
제주 연안해역의 팔각삼단격실형어초에 서식하는 어류의 종조성 및 계절변동을 수중 촬영기법을 이용하여 파악하였다. 조사기간 동안 출현한 어류는 총 44종이었으며, 우점종은 줄도화돔 (A. semilineatus)이었으며, 자리돔 (C. notata)이 차우점하였다. 그 다음으로 전갱이 (T. japonicus), 불볼락 (S. thompsoni) 그리고 세줄얼게비늘 (A. doederleini)순으로 출현하였다. 어초군별 출현양상은 팔각삼단격실형어초에서는 29종, 일반 어초에서 30종, 그리고 자연암반에서 23종이 출현하였다. 계절별 출현양상에서는 모든 정점에서 2009년 9월에 가장 많은 종이 출현하였으며, 일반 어초 및 팔각삼단격실형어초에서는 2009년 12월에도 높게 나타났다. 조사시기별 출현량 변화에서는 팔각삼단격실형어초에서는 2009년 4월, 일반 어초에서는 2010년 6월, 그러나 자연암반에서는 2009년 12월이 가장 높게 나타났다. 인공어초가 설치된 해역에서 어종들이 주로 서식하는 양상이었다.
Abstract
This study was investigated seasonal variation and species composition of fish species at artificial reefs (octangle three-stage compartment type and dice type)and natural rock in the Shinyang-Ri coastal waters off Jeju Island with visual census method in January 2009, April 2009, July 2009, September 2009, December 2009, March 2010, June 2010, and September 2010. A total of 44 fish species was occurred, and the dominant fish species were Apogon semilineatus, Chromis notata, Trachurus japonicus, Sebastes thompsoni and Apogon doederleini. The number of individuals of fishes was higher at April 2009 and March 2010, however, lower at June 2010 and September 2010. The number of fish speices was higher at artificial reefs than those of at natural rock. Apogon semilineatus was dominant at octangle three-stage compartment type and the dice type artificial reefs, whereas Chromis notata was for natural rock. These results indicated that artificial reefs were good habitats for a variety of fish species in the Shinyang-Ri coastal waters off Jeju Island.
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