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Changes in Planktonic Communities and Environmental Factors between Open Versus Closed Artificial Marine Microcosms

개방형 및 폐쇄형 인공해양소형생태계에서 미소생물상 및 수환경의 변화

  • Jung, Seung Won (Library of Marine Samples, Korea Institute of Ocean Science & Technology) ;
  • Kang, Don-Hyug (Maritime Security Research Center, Korea Institute of Ocean Science & Technology)
  • 정승원 (한국해양과학기술원 해양시료도서관) ;
  • 강돈혁 (한국해양과학기술원 해양방위연구센터)
  • Received : 2015.04.03
  • Accepted : 2015.11.23
  • Published : 2015.12.31

Abstract

To understand differences of environmental factors and planktonic communities in closed (CS) versus open (OS) enclosed experimental systems, we performed a study on a 100-L indoor-type artificial marine microcosm. For environmental factors, including water temperature, dissolved inorganic phosphorus, and dissolved silica, there were no significant differences between CS and OS; however, salinity was higher in CS than that of OS due to the evaporation effect. The concentration of dissolved oxygen and dissolved inorganic nitrogen was lower in CS than in OS. The abundance of phytoplankton was lower in CS than in OS. However, abundance of autotrophic nanoflagellates and heterotrophic bacteria varied inversely with that of phytoplankton abundances. In particular, the abundance of heterotrophic nanoflagellates and ciliates increased with bacterial growth after a time lag. Therefore, environmental factors and planktonic communities in CS gradually changed over time and characterized a different artificial ecosystem than in OS.

Acknowledgement

Grant : 유해적조 실시간 탐지 및 분석을 위한 상용 시스템 개발 및 사업화, USCG Phase II 시험, 평가 및 인증시스템 구축, 해양 유해조류 자동판별시스템 개발 및 방제적용기술 타당성 분석

Supported by : 한국해양수산진흥개발원

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