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

The Korean Society of Oceanography (한국해양학회)
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The Seasonal Variation of Primary Productivity in the Antarctic Coastal Ecosystems

남극 연안생태계에서 일차생산력의 계절변화

  • Kim, Hae-Cheol (Department of Oceanography and Research Institute of Oceanography, Seoul National University) ;
  • Yang, Sung-Ryull (Department of Environmental Engineering, Kwangju University) ;
  • Pae, Se-Jin (Biological Oceanography Division, Korea Ocean Research and Development Institute) ;
  • Shim, Jae-Hyung (Department of Oceanography and Research Institute of Oceanography, Seoul National University)
  • 김해철 (서울대학교 해양학과.해양연구소) ;
  • 양성렬 (광주대학교 환경공학과) ;
  • 배세진 (한국해양연구소 생물연구부) ;
  • 심재형 (서울대학교 해양학과.해양연구소)
  • Received : 1997.09.04
  • Accepted : 1998.01.20
  • Published : 1998.05.30
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Abstract

To understand the temporal variation of phytoplankton community in the Antarctic coastal ecosystem, physicochemical parameters, chlorophyll a, and primary productivity were measured as a component of the 7th KARP (Korea Antarctic Research Program) in 1994. Data were collected every month between February and December except four months (June-September) when the study area was frozen. Chlorophyll a concentrations ranged from negligible to 3.03 ${\mu}g/l$, averaging 0.63 ${\mu}g/l$. The primary productivity ranged 0.53-18.95 mg C/$m^3{\cdot}day$, and the depth-integrated primary productivity ranged 41.28-560.20 mg C/$m^3{\cdot}day$. A positive relationship was observed between the phytoplankton biomass and irradiance ($r^2$=0.29, p < 0.01). The degree of correlation between the primary productivity and irradiance ($r^2$=0.85, p < 0.001) was significantly higher than that between the phytoplankton biomass and irradiance. However, neither temperature nor inorganic nutrients seem to affect the temporal variation of primary productivity.

남극 내만 생태계에 서식하는 식물플랑크톤의 계절에 따른 분포 및 생리상태, 그리고 상호관계를 알아보기 위하여 아남극에 위치한 Maxwell 만과 Marian 소만에서 1994년 2월부터 1994년 12월까지 물리, 화학적 환경요인과 식물플랑크톤의 색소량, 일차생산력을 조사하였다. 조사시기 동안 관측한 chlorophyll a의 농도는 미검출 수준(not detected)~3.03 ${\mu}g/l$ (평균 0.63 ${\mu}g/l$)의 비교적 큰 변화를 보였고, 일차생산력은 0.53~18.95 mg C/$m^3{\cdot}day$를 기록하였으며, 수층적분한 식물플랑크톤의 일차생산력은 41.28~560.20 mg C/$m^3{\cdot}day$의 범위를 보였다. 식물플랑크톤의 생물량은 일사량과 양의 상관관계를 보였고($r^2$=0.29, p < 0.01), 일차생산력은 일사량과 매우 밀접한 관련이 있었으나($r^2$=0.85, P < 0.001), 온도와 영양염은 식물플랑크톤 군집을 조절하는데 기여하지 않았다.

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