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Article

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

SOON HYUN KWON12
,
JAE HAC LEE1
,
OK HWAN YU12*
권 순현12
,
이 재학1
,
유 옥환12*
1Marine Ecosystem and Biological Research Center, Korea Institute of Ocean Science & Technology
2Ocean Science and Technology School, Korea Maritime University
1한국해양과학기술원 생태기반연구센터
2한국해양대학교 해양과학기술전문대학원
* Corresponding Author
February 2017. pp. 18-30
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Abstract

저서퇴적상은 다모류 군집에 가장 많은 영향을 주고 있지만, 다양한 퇴적상을 가지는 온배수 지역에서 저서다모류 서식에 영향을 주는 환경 요인 연구는 거의 없다. 본 연구는 동해 연안 저서다모류의 종 조성 및 군집 분포에 따른 공간적 분포 양상을 파악하였고, 이에 영향을 미친 환경요인들을 측정하였으며, 발전소에서 배출되는 온배수와 퇴적상의 차이가 저서다모류에 미치는 영향을 조사하였다. 저서다모류 군집의 특성을 조사하기 위하여 2006년 8월에서 2013년 2월까지 온배수 영향이 있는 울진, 고리 지역과 비교 대상 지역인 후포 지역을 포함한 세 지역에서 생물을 채집하였다. 조사결과 총 283종, 평균 4,912개체/m2의 저서다모류가 출현하였다. 주요 우점종으로는 Spiophanes bombyx, Magelona japonica, Lumbrineris longifolia, Sternaspis scutata 등 이었으며, 울진과 후포 지역은 S. bombyx, 고리 지역은 M. japonica가 최우점 출현하여 지역별로 차이가 있었다. Lumbrineris longifolia와 M. japonica는 일반적인 동해 연안에 많은 수로 우점 서식하지만 조사지역의 발전소 취․배수구 지역에 거의 출현하지 않아 발전소 취․배수구 지역의 인위적인 환경교란이 저서다모류 종 조성에 영향을 주는 것으로 나타났다. 세 지역을 종합하여 다모류 군집 분석을 실시 한 결과 퇴적물 내의 총 유기탄소량과 퇴적물의 입도, 퇴적상에 따른 군집으로 나뉘는 양상을 보였다. 그러므로 본 연구에서 다모류의 군집구조는 발전소 온배수 및 취․배수구의 인위적인 환경 교란에 의한 영향은 발전소 취․배수구 주변에 국한되며 그 이외의 지역에서는 퇴적물 내의 총 유기탄소량과 퇴적물의 입도 등 지역 간 퇴적상 조성에 보다 큰 영향을 받는 것으로 여겨진다.

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

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Information
  • Publisher :The Korean Society of Oceanography
  • Publisher(Ko) :한국해양학회
  • Journal Title :The Sea Journal of the Korean Society of Oceanography
  • Journal Title(Ko) :한국해양학회지 바다
  • Volume : 22
  • No :1
  • Pages :18-30
  • Received Date : 2016-09-09
  • Revised Date : 2017-01-20
  • Accepted Date : 2017-01-23
  • DOI :https://doi.org/10.7850/jkso.2017.22.1.018
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