Uptake rates of dissolved inorganic carbon and nitrogen by under-ice phytoplankton in the Canada Basin in summer 2005
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- Uptake rates of dissolved inorganic carbon and nitrogen by under-ice phytoplankton in the Canada Basin in summer 2005
- Other Titles
- 2005년 여름 캐나다 분지해의 해빙 아래 식물플랑크톤에 의한 탄소와 질소 흡수율
- Lee, Sang Heon
Terry E. Whitledge
- Biodiversity & Conservation; Environmental Sciences & Ecology
- C/N ratio; Canada Basin; Nitrogen uptake rate; Phytoplankton; Primary productivity
- Issue Date
- Springer Berlin
- Lee, Sang Heon, Terry E. Whitledge, Dean Stockwell. 2010. "Uptake rates of dissolved inorganic carbon and nitrogen by under-ice phytoplankton in the Canada Basin in summer 2005". POLAR BIOLOGY, 33(8): 1027-1036.
- The Ocean Exploration cruise in June-July 2005 allowed detailed description of the in situ under-ice primary productivity of phytoplankton in the Canada Basin. On the basis of a 13C？15N dual isotope tracer technique, the estimated daily carbon production rate of under-ice phytoplankton ranged from 20.4 to 178.3 mg C m-2 day-1, whereas the daily nitrogen production rate ranged from 5.5 to 50.9 mg N m-2 day-1. These ranges are much higher than those recorded in previous studies, probably due to high seasonal and regional differences in the basin. Reduced nitrogen limitation for phytoplankton and the relative light attenuation through different sea-ice conditions may also be factors influencing the higher carbon and nitrogen uptake rates in 2005. Based on this study, new carbon production by phytoplankton growing beneath sea ice is estimated to range from 0.66 to 6.75 g C m-2 year-1, indicating that 25.2？66.4% of total annual primary production might potentially be exported from the euphotic zone in the deep Canada Basin.
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