Journal of the korean society of oceanography
- 제35권1호
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- Pages.34-45
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- 2000
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- 1225-1283(pISSN)
Nutrient Depletion and Primary Productivity in the Marginal Ice Zone of the Northwestern Weddell Sea During Austral Summer
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Kang, Sung-Ho
(Polar Research Center Korea Ocean Research & Development Institute) ;
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Chung, Kyung-Ho
(Polar Research Center Korea Ocean Research & Development Institute) ;
- Kim, Dong-Yup (Polar Research Center Korea Ocean Research & Development Institute) ;
- Park, Byong-Kwon (Korea Research Council of public Science & Technology) ;
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Kim, Dong-Seon
(Polar Research Center Korea Ocean Research & Development Institute)
- 발행 : 2000.03.31
초록
Spatial distributions of phytoplankton biomass and nutrients were examined to investigate the magnitude of phytoplankton blooms along the marginal ice zone (MIZ) in the northwestern Weddell Sea during austral summer of 1995. High phytoplankton biomass was associated with the MIZ in the study area. Vertical stability induced by meltwater appears to be the most important factor controlling phytoplankton biomass distribution. Nitrate concentrations are significantly depleted within the upper water column at the phytoplankton biomass maximum. The time required to attain the observed nutrient depletion was calculated from phytoplankton biomass and nitrate depletion, which ranges from 27 to 68 days in transect 4 and from 33 to 145 days in transect 3. Phytoplankton production was also calculated from nitrate depletion and time-scales of nitrate depletion, which varies from 272 to 1752 mg C m
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