Ocean and Polar Research

  • 제43권1호
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  • Pages.31-43
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  • 2021
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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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부산 영도 내만에서 원핵생물 성장 및 다양성의 주간 변동 특성

Weekly Variation of Prokaryotic Growth and Diversity in the Inner Bay of Yeong-do, Busan

  • 양원석 (한국해양대학교 해양과학기술전문대학원 해양과학기술융합학과) ;
  • 노재훈 (한국해양대학교 해양과학기술전문대학원 해양과학기술융합학과) ;
  • 이호원 (한국해양과학기술원 해양생태연구센터) ;
  • 이연정 (한국해양과학기술원 해양생태연구센터) ;
  • 최동한 (한국해양대학교 해양과학기술전문대학원 해양과학기술융합학과)
  • Yang, Wonseok (Department of Convergence Study on the Ocean Science and Technology, Ocean Science and Technology School, Korea Maritime and Ocean University) ;
  • Noh, Jae Hoon (Department of Convergence Study on the Ocean Science and Technology, Ocean Science and Technology School, Korea Maritime and Ocean University) ;
  • Lee, Howon (Marine Ecosystem Research Center, Korea Institute of Ocean Science & Technology) ;
  • Lee, Yeonjung (Marine Ecosystem Research Center, Korea Institute of Ocean Science & Technology) ;
  • Choi, Dong Han (Department of Convergence Study on the Ocean Science and Technology, Ocean Science and Technology School, Korea Maritime and Ocean University)
  • 투고 : 2020.11.19
  • 심사 : 2021.01.07
  • 발행 : 2021.03.30
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초록

To understand the temporal variation of prokaryotic communities in a temperate coastal area, prokaryotic abundance, activity, and community composition were investigated every week for over a year at a coastal monitoring station of Yeong-do, Busan. The prokaryotic abundances fluctuated about 10 times, ranging from 2.0 to 20.1 × 105 cells mL-1 and tended to be high in spring when phytoplankton bloom occurred. The prokaryotic thymidine incorporation rates (TTI) varied in a low range between 0.2 and 11.5 pmol L-1 h-1 in winter. However, in summer, TTI were increased up to a range of 8.3 to 17.4 pmol L-1 h-1, showing an increasing pattern in summer. During the study period, Alphaproteobacteria was the most dominant class for most of the year, followed by Flavobacteria. While the seasonal variation of prokaryotic composition was not apparent at the class level, many prokaryotic species showed a distinct temporal or seasonal variation for the year. In the coastal site, prokaryotic biomass and activity did not show significant correlations with temperature and chlorophyll-a, which are well known to regulate prokaryotic growth in marine environments, suggesting that the study area may be affected by diverse sources of organic matter for their growth.

키워드

과제정보

본 연구는 한국해양과학기술원 주요 과제인 '생지화학 순환 및 해양환경변동 연구(PE99812)'의 지원을 받아 수행하였습니다.

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