| Physical structure and vertical distribution of chlorophyll a in winter sea ice from the northwestern Weddell Sea, Antarctica |
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| 作者姓名： | DAI Fangfang WANG Zipan YAN Xiaojun LI Zhijun ALLHUSEN Erik DIECKMANN Gerhard |
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| 作者单位： | DAI Fangfang(Ningbo University, Ningbo 315211, China;Zhejiang Wanli University, Ningbo 315100, China);WANG Zipan(Zhejiang Wanli University, Ningbo 315100, China);YAN Xiaojun(Ningbo University, Ningbo 315211, China);LI Zhijun(Dalian University of Technology, Dalian 116024, China);ALLHUSEN Erika,DIECKMANN Gerhard(Alfred Wegener Institute for Marine and Polar Research, Bremerhaven 27570, Germany) |
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| 基金项目： | supported by the Alfred gener Institute for Polar and Marine Research. |
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| 摘 要： | 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/dm 3 with a mean of 16.56 μg/dm 3 . 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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| 关 键 词： | 叶绿素a浓度 南极海冰 冬季生产 威德尔海 西北部 南极洲 垂直分布 物理结构 |
| 收稿时间： | 30 July 2008 |
| 修稿时间： | 2009/12/12 0:00:00 |
Physical structure and vertical distribution of chlorophyll a in winter sea ice from the northwestern Weddell Sea, Antarctica |
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| DAI Fangfang,WANG Zipan,YAN Xiaojun,LI Zhijun,ALLHUSEN Erik,DIECKMANN Gerhard.Physical structure and vertical distribution of chlorophyll a in winter sea ice from the northwestern Weddell Sea, Antarctica[J].Acta Oceanologica Sinica,2010,29(3):97-105. |
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| Authors: | DAI Fangfang WANG Zipan YAN Xiaojun LI Zhijun ALLHUSEN Erika and DIECKMANN Gerhard |
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| Institution: | 1.Ningbo University, Ningbo 315211, China;Zhejiang Wanli University, Ningbo 315100, China2.Zhejiang Wanli University, Ningbo 315100, China3.Ningbo University, Ningbo 315211, China4.Dalian University of Technology, Dalian 116024, China5.Alfred Wegener Institute for Marine and Polar Research, Bremerhaven 27570, Germany |
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| Abstract: | 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 PO-LARSTERN 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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| Keywords: | physical structure chlorophyll a Antarctica winter sea-ice |
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