Composition of algal pigments in surface freshen layer after ice melt in the central Arctic

ZHUANG Yanpei; JIN Haiyan; GU Fan; ZHANG Yang; BAI Youcheng; JI Zhongqiang; LU Yong; CHEN Jianfang

doi:10.1007/s13131-017-1024-0

北冰洋中心区表层淡化层的藻类色素组成

doi: 10.1007/s13131-017-1024-0

国家海洋局第二海洋研究所

基金项目: The National Natural Science Foundation of China under contract Nos 41276198 and 41506222; Chinese Polar Environment Comprehensive Investigation & Assessment Programs under contract Nos Chinare-03-04 and Chinare-04-03; Scientific Research Fund of Second Institute of Oceanography, SOA under contract No. JG1323.

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- 收稿日期: 2016-03-29

Composition of algal pigments in surface freshen layer after ice melt in the central Arctic

Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

摘要

摘要: 季节性海冰融化在北冰洋中心区表层形成淡水层，影响了浮游植物的类群。研究发现岩藻黄素（Fuco，指示硅藻）是冰芯底部检测到的主要光合色素，叶黄素（Lut）和叶绿素b （Chl b）（指示绿藻）是冰水界面浓度最高的类胡萝卜素。海冰底部硅藻占据了绝对的优势，但在冰水界面藻类类群转变了以绿藻为主的结构。冰下水中，浮游植物群落随着深度的增加，由绿藻为主快速转变为以硅藻为主，盐度可能是导致这种变化的原因。
- 北冰洋 /
- 冰下水 /
- 色素 /
- 营养盐 /
- 浮游植物群落
Abstract: Seasonal meltwater input creates a thin freshen layer in surface seawater under ice, which largely shifts the algae assemblages. Our recent observation of photosynthetic pigments in the high Arctic showed that ice bottom and 5 m of seawater under ice contained relatively high concentration of fucoxanthin, while chlorophyll b and lutein were the major diagnostic pigments in ice-water interface and 0 m of seawater under ice. Additionally, a notable change of dominant phytoplankton occurred in the top 5 m of seawater under ice, from chlorophytes-dominated at surface to diatoms-dominated at 5 m depth, which might attribute to the sharp salinity gradient (salinity from 12.5 to 28.1) in the surface seawater under ice. Our results imply that phytoplankton community in surface layer under ice would become more chlorophytes in the future warming Arctic Ocean.
- the Arctic Ocean /
- seawater under ice /
- pigments /
- nutrients /
- phytoplankton community

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参考文献(35)

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北冰洋中心区表层淡化层的藻类色素组成

doi: 10.1007/s13131-017-1024-0

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Composition of algal pigments in surface freshen layer after ice melt in the central Arctic

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