Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Community Structure of Demersal Organisms Caught by Otter Trawl Survey in the Uljin Marine Ranching Area, Korea

울진바다목장 해역에서 오터트롤로 어획한 저서생물의 군집구조

  • Yoon, Byoung-Sun (Fisheries Resources and Environment Division, East Sea Fisheries Research Institute, NFRDI) ;
  • Yoon, Sang-Chul (Fisheries Resources and Environment Division, East Sea Fisheries Research Institute, NFRDI) ;
  • Lee, Sung-Il (Fisheries Resources Management Division, National Fisheries Research & Development Institute) ;
  • Kim, Jong-Bin (External Research Cooperation Division, National Fisheries Research & Development Institute) ;
  • Yang, Jae-Hyeong (Fisheries Resources and Environment Division, East Sea Fisheries Research Institute, NFRDI) ;
  • Park, Jeong-Ho (Fisheries Resources and Environment Division, East Sea Fisheries Research Institute, NFRDI) ;
  • Choi, Young-Min (Fisheries Resources and Environment Division, East Sea Fisheries Research Institute, NFRDI) ;
  • Park, Jong-Hwa (Fisheries Resources and Environment Division, East Sea Fisheries Research Institute, NFRDI)
  • 윤병선 (동해수산연구소 자원환경과) ;
  • 윤상철 (동해수산연구소 자원환경과) ;
  • 이성일 (국립수산과학원 자원관리과) ;
  • 김종빈 (국립수산과학원 대외협력과) ;
  • 양재형 (동해수산연구소 자원환경과) ;
  • 박정호 (동해수산연구소 자원환경과) ;
  • 최영민 (동해수산연구소 자원환경과) ;
  • 박종화 (동해수산연구소 자원환경과)
  • Received : 2011.05.06
  • Accepted : 2011.09.30
  • Published : 2011.10.31
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Abstract

To elucidate demersal organism community structure, abundance, and biomass by period and region in the Uljin marine ranching area, otter trawl surveys were conducted at six stations from February 2008 to December 2009. During the survey period, a total of 118 species was collected in the Uljin marine ranching area, including 76 pisces, 27 mollusca and 15 crustaceans. The average abundance of individuals was 806 ind./$m^2$ and average biomass was 31,853 g/m2. The numbers of species, species richness, individuals per area and biomass per area were higher in 2009 than in 2008. Cluster and MDS analysis, based on a Bray-Curtis similarity matrix of fourth root transformed data of number of species and individuals per area, showed division into two different groups of demersal organisms in 2008 (Group 1) and one demersal organism community in 2009 (Group 2). From cluster and MDS analysis using the similarity of the demersal community among six stations, the Uljin marine ranching area was divided into Group A (St. 2, St. 4, St. 5 and St. 6) and Group B (St. 1 and St. 3).

Keywords

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