DAI Fangfang, WANG Zipan, YAN Xiaojun, LI Zhijun, ALLHUSEN Erika, DIECKMANN Gerhard. Physical structure and vertical distribution of chlorophyll a in winter sea ice from the northwestern Weddell Sea, Antarctica[J]. Acta Oceanologica Sinica, 2010, (3): 97-105. doi: 10.1007/s13131-010-0041-z
Citation: DAI Fangfang, WANG Zipan, YAN Xiaojun, LI Zhijun, ALLHUSEN Erika, DIECKMANN Gerhard. Physical structure and vertical distribution of chlorophyll a in winter sea ice from the northwestern Weddell Sea, Antarctica[J]. Acta Oceanologica Sinica, 2010, (3): 97-105. doi: 10.1007/s13131-010-0041-z

Physical structure and vertical distribution of chlorophyll a in winter sea ice from the northwestern Weddell Sea, Antarctica

doi: 10.1007/s13131-010-0041-z
  • Received Date: 2009-10-26
  • Rev Recd Date: 2009-12-12
  • The investigation on sea-ice biology in combination with physics, chemistry and ecology was carried out in the northwestern Weddell Sea, Antarctica, during the cruise ANT/XX Ⅲ-7 on board POLARSTERN in the austral winter (August-October) in 2006. The distribution of chlorophyll a was measured and related to sea ice texture. The mean concentrations of chlorophyll a in the sea ice varied considerably with ice texture. The concentration of chlorophyll a per core ranged from 2.10-84.40 μg/dm3 with a mean of 16.56 μg/dm3. And the value of R (chlorophyll a/gross chlorophyll) ranged from 0.79-0.83. These high winter chlorophyll values indicate that primary production is considerable and confirms that there is significant primary production in Antarctic sea ice during winter. Thus this constitutes a major proportion of southern ocean primary production and carbon flux before the sea ice retreats.
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