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

  • 제26권4호
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  • Pages.356-368
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  • 2021
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  • 1226-2978(pISSN)
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  • 2671-8820(eISSN)
한국해양학회 (The Korean Society of Oceanography)
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부산 영도 내만에서 식물플랑크톤 군집의 주간 변동 특성

Weekly Variation of Phytoplankton Communities in the Inner Bay of Yeong-do, Busan

  • 양원석 (한국해양대학교 해양과학기술전문대학원 해양과학기술융합학과) ;
  • 최동한 (한국해양대학교 해양과학기술전문대학원 해양과학기술융합학과) ;
  • 원종석 (한국해양대학교 해양과학기술전문대학원 해양과학기술융합학과) ;
  • 김지훈 (한국해양대학교 해양과학기술전문대학원 해양과학기술융합학과) ;
  • 현명진 (한국해양과학기술원 해양생태연구센터) ;
  • 이하은 (한국해양과학기술원 해양생태연구센터) ;
  • 이연정 (한국해양과학기술원 해양생태연구센터) ;
  • 노재훈 (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) ;
  • CHOI, DONG HAN (Department of Convergence Study on the Ocean Science and Technology Ocean Science and Technology School, Korea Maritime and Ocean University) ;
  • WON, JONGSEOK (Department of Convergence Study on the Ocean Science and Technology Ocean Science and Technology School, Korea Maritime and Ocean University) ;
  • KIM, JIHOON (Department of Convergence Study on the Ocean Science and Technology Ocean Science and Technology School, Korea Maritime and Ocean University) ;
  • HYUN, MYUNG JIN (Marine Ecosystem Research Center, Korea Institute of Ocean Science & Technology) ;
  • LEE, HAEUN (Marine Ecosystem Research Center, Korea Institute of Ocean Science & Technology) ;
  • LEE, YEONJUNG (Marine Ecosystem Research Center, Korea Institute of Ocean Science & Technology) ;
  • NOH, JAE HOON (Department of Convergence Study on the Ocean Science and Technology Ocean Science and Technology School, Korea Maritime and Ocean University)
  • 투고 : 2021.01.09
  • 심사 : 2021.10.07
  • 발행 : 2021.11.30
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초록

연안역에서 나타나는 식물플랑크톤 군집의 연중 변동 특성을 확인하기 위하여, 일 년여간 부산 영도 내만의 고정점에서 생물량 및 다양성을 매주 조사하였다. 연구 해역은 엽록소 a가 0.43~7.58 mg m-3 범위를 나타내어 중영양에서 부영양 특성을 나타내었다. 조사 기간 동안 엽록소 a 중 3 ㎛ 이상 크기의 식물플랑크톤이 차지하는 비율은 평균 80% 내외를 차지하여 높았다. 이들 3 ㎛ 이상 크기의 식물플랑크톤에서는 규조류(Bacillariophyta)가 봄과 여름에 가장 우점하였으며, 가을과 겨울에는 은편모조강(Cryptophyceae)이 우점하였다. 반면, 3 ㎛ 이하 크기의 초미소식물플랑크톤에서는 마미엘라강(Mamiellophyceae)이 대부분의 시기에 가장 우점하였으며, 은편모조강(Cryptophyceae)이 연중 평균(+표준편차) 17.7 ± 17.6%로 비교적 높았으나 계절적 변동이 컸다. 와편모조강(Dinophyceae)은 드물지만 60.4%까지 매우 높게 우점하기도 하였다. 본 연구에서 13개월 간 일주일 간격의 정기 관측을 통해 육지에 인접한 천해 연안 식물플랑크톤 군집이 짧은 시간 규모에서 변동함을 파악할 수 있었다. 이러한 지속적인 고정점 관측은 식물플랑크톤의 단·장기 변동 특성과 기후 및 환경 변화의 영향을 이해하는 데 중요한 자료를 제공할 수 있을 것이다.

To understand the temporal variation of phytoplankton communities in a coastal area, the biomass and diversity were weekly investigated in the inner bay of Yeong-do, Busan. In the study area, chlorophyll a concentration ranged from 0.43~7.58 mg m-3 during the study, indicating the study area was in mesotrophic or eutrophic status. The fractions of chlorophyll a occupied by large phytoplankton (> 3 ㎛ diameter) exhibited an average of 80% of total chlorophyll a in this study. Among the large phytoplankton, while Bacillariophyta was the most dominant in spring and summer, Cryptophyceae prevailed in the fall and winter. On the contrary, in the picophytoplankton community less than 3 ㎛ in diameter, Mamiellophyceae was the most dominant in most seasons, Cryptophyceae was relatively high with an average of 17.7 ± 17.6% throughout the year, but seasonal variations were large. Dinophyceae rarely occupied a higher fraction up to 60.4% of the picophytoplankton community. By weekly monitoring at a coastal station for 13 months, it is suggested that phytoplankton communities in coastal waters could be changed on a short time scale. If data are steadily accumulated at the time-series monitoring site for a long time, these will provide important data for understanding the long-term dynamics of phytoplankton as well as the impact of climate and environmental changes.

키워드

과제정보

본 연구는 한국해양과학기술원 주요과제인 '생지화학 순환 및 해양환경변동 연구(PE99912)'의 지원을 받아 수행하였습니다.

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