Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Impact of Environmental Variables on the Diversity and Distribution of the Megabenthos in the South Sea of Korea

  • Kang, Su Min (Department of Convergence Study on the Ocean Science and Technology Ocean Science and Technology School, Korea Maritime and Ocean University) ;
  • Yu, Ok Hwan (Department of Convergence Study on the Ocean Science and Technology Ocean Science and Technology School, Korea Maritime and Ocean University) ;
  • Lee, Hyung Gon (Marine Ecosystem and Biological Research Center, Korea Institute of Ocean Science & Technology)
  • Received : 2019.05.10
  • Accepted : 2019.05.28
  • Published : 2019.05.31
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Abstract

Megabenthos samples were collected using 10-min trawls towed at 17 stations from 2015 to 2016. The dominant species (>1% of the total density) were Stegophiura sterea (10.4%) and two subtropical species, Mactrinula dolabrata (9.0%) and Acila divaricate (8.3%), respectively. The community structure of the megabenthos fell into four groups: the southeast, the southernmost region off Jeju Island, the frontal zone of the South Sea with C3, and a diagonal area from the south coast to the western side of Jeju Island. The total numbers of species, diversity, density and biomass were higher in the C3 region of the South Sea. Environmental factor analysis showed that differences in the megabenthos community were related to depth, gravel contents, and sorting value (${\sigma}$). These results indicate that changes in the marine environmental conditions in the South Sea of Korea affect the megabenthos species' composition and diversity.

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References

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