수산해양기술연구 (Journal of the Korean Society of Fisheries and Ocean Technology)

  • 제50권4호
  • /
  • Pages.530-541
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  • 2014
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  • 2671-9940(pISSN)
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  • 2671-9924(eISSN)
한국수산해양기술학회 (The Korean Society of Fisheries and Ocean Technology)
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강릉 연안에서 형망의 갈퀴 간격 및 망목 크기에 따른 어획 생물의 종조성 및 군집 분석

Species composition and cluster analysis of the communities caught by dredge in relation to tooth spacing and mesh size in the coastal waters of Gangneung, Korea

  • 안희춘 (국립수산과학원 동해수산연구소 해역산업과) ;
  • 배재현 (국립수산과학원 동해수산연구소 해역산업과) ;
  • 박종명 (국립수산과학원 동해수산연구소 해역산업과) ;
  • 박창두 (국립수산과학원 시스템공학과) ;
  • 홍성익 (바다생태리서치)
  • 투고 : 2014.10.15
  • 심사 : 2014.11.26
  • 발행 : 2014.11.30
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초록

The dredge gear is dragged along the bottom of the sea to catch targeted edible bottom dwelling species. Species composition and ecological index of the catches of dredge were estimated around Gangneung coastal fishing ground by dredge with different mesh size and tooth space from July to December 2013. Eight different types of dredge including four different tooth space (24.7 mm, 29.9 mm, 34.9 mm, 40.1 mm) and four different mesh size(15.5 mm, 32.7 mm, 51.1 mm, 60.0 mm) were used in the experiment. During the experiment, total catches were collected 31 species as sipunculida 1 species, mollusca 13 species, annelida 3 species, arthropoda 8 species, echinodermata 4 species and others 2 species. The dominant genus were mollusca and echinodermata while the dominant species were Megangulus venulosus, Pseudocardium sachalinensis, Schaphechinus brevis. The richness index was ranged 1.29-1.72, evenness index was 0.6-0.65 and diversity index was 1.65-1.83 according to the tooth space and mesh size of dredge. Richness index, diversity index were high at tooth space 34.9 mm dredge and ecological index showed decreasing tendency with the increasing of mesh size of dredge. Cluster and MDS analysis, based on a Bray-Curtis and similarity matrix of fourth root transformed data of number of species and wet weight, showed division into four different groups as four different tooth space (Group A), four different mesh size Group B (51.1 mm, 60.0 mm), Group C (32.7 mm) and Group D (15.5 mm).

키워드

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  2. Age and Growth of Great Tellin, Megangulus venulosus in the Coastal Waters of Gangneung, Korea vol.51, pp.4, 2015, https://doi.org/10.3796/KSFT.2015.51.4.592
  3. Catch and cluster analysis according to net materials of gillnet for the Pacific herring in the coastal waters of Samcheok, Korea vol.51, pp.3, 2015, https://doi.org/10.3796/KSFT.2015.51.3.348
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