Biomarker Records in Sediment Core of R
详细信息
- 责任者：Bai Youcheng (Laboratory of Marine Ecosystem and Biogeochemistry ; SOA ; Second Institute of Oceanography ; Hangzhou 310012 ; China) ; Chen Jianfang
- 刊名：Acta Sedimentologica Sinica
- 出版年：2010
- 卷期：28(4)
- 关键词：生物标志化合物 ; biomarkers ; 海洋沉积物 ; marine sediments ; 古生产力 ; paleoproductivity ; 北极区 ; Arctic region
- 页码：p.768-775
- 图表：6 illus., 40 refs.
- 分类号：0200
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
This paper used multi-biomarkers to study the R12a core’s top 40 cm samples’ phytoplankton and community sampled during the Second Chinese Arctic expedition from the Chukchi Sea in summer, 2003, and to obtain the information of the phytoplankton production and community change since 500 a. The results indicate the total and individual primary productivity increased over the last 500 a. The phytoplankton community structure mostly shows the contributions of coccolithforids decreased, the contribution of diatoms increased, and the relative abundances of dinoflagellates have not obvious changes. This may be related with the Chukchi Sea’s nutrients structure which is determined by the waters from the north Pacific Ocean and the summer ice cover change in the Chukchi Sea.
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