The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY (한국해양학회지:바다)

The Korean Society of Oceanography (한국해양학회)
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Spatio-temporal Distributions of Polychaete Communities and Benthic Environmental Characteristics of the Harbor Area of Busan Port, Korea

부산항 주변 저서다모류군집의 시.공간 분포와 저서환경의 특징

  • Jung, Rae-Hong (Marine Environment Research Division. National Fisheries Research & Development Institute(NFRDI)) ;
  • Yoon, Sang-Pil (Coastal Weland Research Institute, National Fisheries Research & Development Institute(NFRDI)) ;
  • Kim, Youn-Jung (Marine Environment Research Division. National Fisheries Research & Development Institute(NFRDI)) ;
  • Choi, Min-Kyu (Marine Environment Research Division. National Fisheries Research & Development Institute(NFRDI)) ;
  • Lee, Won-Chan (Marine Environment Research Division. National Fisheries Research & Development Institute(NFRDI))
  • 정래홍 (국립수산과학원 어장환경과) ;
  • 윤상필 (국립수산과학원 갯벌연구소) ;
  • 김연정 (국립수산과학원 어장환경과) ;
  • 최민규 (국립수산과학원 어장환경과) ;
  • 이원찬 (국립수산과학원 어장환경과)
  • Received : 2011.06.29
  • Accepted : 2011.07.21
  • Published : 2011.08.31
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Abstract

This study was conducted to investigate the benthic condition around Busan Port by analysing spatio-temporal distribution pattern of polychaete community and some benthic environmental factors. Field survey was seasonally carried out at 15 stations covering in and outside of Busan Port from February to December, 2007. Water temperature, salinity and the type of surface sediment showed little changes among the stations, but factors related to organic enrichment such as TOC, AVS, coprostanol showed an obvious contrast, especially between in and outside of Busan Port. A total of96 species occurred and mean density was 1,814 ind./$m^2$. Species richness was higher at outer port than inner port, but density was higher at inner port. Dominant species were Aphelochaeta monilaris, Magelona japonica, Pseudopolydora paucibranchiata, etc. and many of them were typical species of organically enriched area. From the multivariate analyses, the whole study area was composed of two distinct polychaete communities located at the inside and outside of the port, and seasonal changes didn't have any influential effects on the structure. Coprostanol and AVS, indicators of organically enriched condition, well explained the community structures of polychaete worms in the vicinity of Busan Port. In this context, the innermost area of North Harbor was in a highly enriched state.

본 연구는 부산항 주변 저서생태계의 상태를 파악하기 위해 수행되었으며, 이를 위해 저서다모류군집의 시 공간 분포 패턴과 저서환경요인에 대한 조사를 실시하였다. 현장 조사는 북항, 남항 그리고 감천항 내 외측에 선정된 15개 정점에서 2007년 2월부터 12월 사이에 계절별로 진행되었다. 부산항 주변 저서환경요인 중 수온, 염분, 퇴적물 특성 등은 전반적으로 균일한 특성을 보였으나, 총유기탄소(TOC), 산휘발성황화물(AVS), coprostanol과 같은 유기물 함량 및 오염과 관련된 변수들은 부산항의 내 외측에서 뚜렷한 차이를 보였다. 저서다모류군집의 총 종수는 96종, 평균 개체밀도는 1,814 개체/$m^2$ 이었으며, 출현종수는 대체로 외측에서, 개체밀도는 내측에서 높았다. 주요 우점종은 Aphelochaeta monilaris, Magelona japonica, Pseudopolydora paucibranchiata 등으로 다수의 유기물 오염지 표종들이 포함되어 있었다. 다변량분석 결과, 전체 군집은 부산항의 내측군집과 외측군집으로 구분되었으며, 계절성은 큰 영향을 마치지 못하였다. 전체군집구조와 가장 밀접한 상관성을 보인 환경요인은 coprostanol과 산휘발성황화물이었다. 생불과 환경 두 가지 측면 모두에서 부산항 내측의 유기물 오염이 의심되었으며, 그러한 현상은 북항 내측에서 특히 뚜렷하였다.

Keywords

Acknowledgement

Grant : 갯벌의 생태환경 특성을 활용한 생산성 평가 및 향상 연구

Supported by : 국립수산과학원

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  1. Organic Enrichment and Pollution in Surface Sediments from Shellfish Farming in Yeoja Bay and Gangjin Bay, Korea vol.46, pp.4, 2013, https://doi.org/10.5657/KFAS.2013.0424
  2. Polychaete Community Structure from Inshore and Offshore of Lake Shihwa (Korea) in March, 2008 vol.45, pp.1, 2012, https://doi.org/10.5657/KFAS.2012.0056
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