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Environmental Effects on the Benthic Polychaete Communities Around the Power Plant Areas in the East Sea of Korea

동해 발전소 주변의 저서다모류 군집에 영향을 미치는 환경 요인

  • KWON, SOON HYUN (Marine Ecosystem and Biological Research Center, Korea Institute of Ocean Science & Technology) ;
  • LEE, JAE HAC (Marine Ecosystem and Biological Research Center, Korea Institute of Ocean Science & Technology) ;
  • YU, OK HWAN (Marine Ecosystem and Biological Research Center, Korea Institute of Ocean Science & Technology)
  • 권순현 (한국해양과학기술원 생태기반연구센터) ;
  • 이재학 (한국해양과학기술원 생태기반연구센터) ;
  • 유옥환 (한국해양과학기술원 생태기반연구센터)
  • Received : 2016.09.09
  • Accepted : 2017.01.23
  • Published : 2017.02.28

Abstract

The East Sea is almost entirely composed of sandy facies, and the facies type is the major factor influencing benthic polychaete communities. There have been few studies of the effects of environmental factors on benthic polychaetes in thermal discharge areas consisting of different sediment types. This study identified the spatial distribution patterns based on the species composition and distribution of benthic polychaete communities, and the environmental factors influencing benthic polychaetes near power plants were investigated. The polychaete communities in the Uljin, Hupo, and Gori coastal areas near the power plants in the East Sea were seasonally investigated from August 2006 to February 2013. As a result, 283 species were collected. The dominant species were Spiophanes bombyx, Magelona japonica, Lumbrineris longifolia, and Sternaspis scutata. Spiophanes bombyx was the dominant species at Uljin and Hupo, but M. japonica was the dominant species at Gori. Two dominant species from the coastal waters of the East Sea, Lumbrineris longifolia and M. japonica, were rare in the power plant water intake or drainage areas. Cluster analysis was performed to divide the study area into groups by the total organic carbon content, sediment grain size and facies patterns. This study suggests that the community structures of polychaetes are more affected by the total organic carbon, grain size of sediment and facies than by disturbance from thermal discharge, which only affected the polychaete community near power plant drainage areas.

Keywords

Coastal area of East Sea;Thermal discharge;Polychaete community;Environmental variable

Acknowledgement

Supported by : 한국해양과학기술원

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