Ocean and Polar Research

  • 제41권4호
  • /
  • Pages.311-318
  • /
  • 2019
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  • 1598-141X(pISSN)
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  • 2234-7313(eISSN)
한국해양과학기술원 (Korea Institute of Ocean Science & Technology)
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서해 해상풍력단지 조성 예정해역의 대형저서동물 군집 생체량에 대한 생태학적 평가

Ecological Evaluation on the Biomass of Macrobenthic Communities Observed from a Planned Offshore Wind Farm Area, West Coast of Korea

  • 정수영 ((주)한국연안환경생태연구소) ;
  • 이채린 ((주)한국연안환경생태연구소) ;
  • 김성현 ((주)한국연안환경생태연구소) ;
  • 김성태 ((주)한국연안환경생태연구소) ;
  • 명정구 (한국해양과학기술원 해양생물자원연구단) ;
  • 오승용 (한국해양과학기술원 해양생물자원연구단) ;
  • 박진우 (한국해양과학기술원 해양생물자원연구단) ;
  • 진승주 (광운대학교 공과대학 환경공학과) ;
  • 유재원 ((주)한국연안환경생태연구소)
  • Jeong, Su-Young (Korea Institute of Coastal Ecology, Inc.) ;
  • Lee, Chae-Lin (Korea Institute of Coastal Ecology, Inc.) ;
  • Gim, Seong-Hyun (Korea Institute of Coastal Ecology, Inc.) ;
  • Kim, Sungtae (Korea Institute of Coastal Ecology, Inc.) ;
  • Myoung, Jung-Goo (Marine Bio-Resources Research Unit, Korea Institute of Ocean Science & Technology) ;
  • Oh, Sung-Yong (Marine Bio-Resources Research Unit, Korea Institute of Ocean Science & Technology) ;
  • Park, Jin Woo (Marine Bio-Resources Research Unit, Korea Institute of Ocean Science & Technology) ;
  • Jin, Sung-Joo (Department of Environmental Engineering, College of Engineering, Kwangwoon University) ;
  • Yoo, Jae-Won (Korea Institute of Coastal Ecology, Inc.)
  • 투고 : 2019.06.10
  • 심사 : 2019.10.22
  • 발행 : 2019.12.30
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초록

We analyzed the preliminary survey data (2014-2016) of macrobenthic community biomass (n = 112) from the wind farm area located in the southern part of the west coast of Korea and compared this data with data from the entire west coast (n = 369; 2006-2008). Modal classes from frequency distributions were 6 times higher in the latter (5 vs. 32 g/㎡). The mean and median values of the latter were 1.3 and 1.7 times higher (mean, 20.7 vs. 27.8 g/㎡; median, 17.1 vs. 29.5 g/㎡), and the maximum value was 3.4 times higher. Mood's median test showed significant difference at p-value = 0.01. We estimated the biomass-to-depth relationships from each data set by using Akaike Information Criterion and regarded the non-overlap of the 95% confidence intervals as indicating significant difference. The biomass was different from a 10 m depth below, and 3 times higher in the west coast at around 20 m compared with the maximum depth of the wind farm area. A local event of catastrophic sedimentation ranging from 1 to 2 m was observed in the wind farm during winter surveys. This could be a probable source of the lower biomass, but information on biomass seasonality and a natural experimental approach seem to be needed for the conduct of further studies. This study is meaningful in that it provided the background to assess future changes by understanding the lower level of benthic productivity in the area. We expect this study will contribute to the preparation of measures that can remove or mitigate the source of the lower biomass and improve the productivity of fishery resources in the area.

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