Phytoplankton community structure of northern South China Sea in autumn of 2010

Ma Wei; Sun Jun; Xue Bing; Dai Minhan; Hu Jianyu

doi:10.3969/j.issn.0253-4193.2016.04.004

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Ma Wei, Sun Jun, Xue Bing, Dai Minhan, Hu Jianyu. Phytoplankton community structure of northern South China Sea in autumn of 2010[J]. Haiyang Xuebao, 2016, 38(4): 43-53. doi: 10.3969/j.issn.0253-4193.2016.04.004

Citation:

Ma Wei, Sun Jun, Xue Bing, Dai Minhan, Hu Jianyu. Phytoplankton community structure of northern South China Sea in autumn of 2010[J]. Haiyang Xuebao, 2016, 38(4): 43-53. doi: 10.3969/j.issn.0253-4193.2016.04.004

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Phytoplankton community structure of northern South China Sea in autumn of 2010

doi: 10.3969/j.issn.0253-4193.2016.04.004

1.
Huaihe River Basin Water Resources Protection Bureau, Bengbu 233000, China
2.
College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China;Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science and Technology, Tianjin 300457, China
3.
State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China

Received Date: 2015-07-10
Rev Recd Date: 2015-10-20

Abstract

Abstract

The abundance and species composition of phytoplankton community in the northern South China Sea (nSCS) (18°00'-23° 30'N,110°30'-118°00'E) were investigated from 26^th October to 24^th November 2010. A total of 204 taxa (12 uncertain species included) belonging to 70 genera of 4 phyla were identified. The main phytoplankton group was Bacillariophyta with 146 species,which accounted 93.17% of the total phytoplankton cell abundance,followed by Pyrrophyta with 51 species,which accounted for 0.63% of the total phytoplankton cell abundance. Chrysophyta (3 genera and 4 species) and Cyanophyta (2 genera and 3 species,where Trichodesmium erythraeum was the dominant specie) also had been found. The cell abundance of phytoplankton ranged from 0.06×10³ cells/L to 107.50×10³ cells/L and the average was 5.00×10³ cells/L. The phytoplankton cell abundance in the surface water was high in northeast of Hainan Island and the coasts of east of Guangdong. The vertical profiles of phytoplankton showed that the maximum cell abundance was found in the surface water and 25 m layer. The dominant species were Thalassionema nitzschioides,Navicula spp., Skeletonema costatum,Chaetoceros curvisetus,Guinardia stolterforthii and Paralia sulcata etc. The Shannon-Wiener diversity index and Pielou evenness index were high in the southeast of survey area and relatively low in other area,the average were 3.14 and 0.73 in surface,2.83 and 0.77 in 5 m layer,respectively. These two diversity indices showed a similar distribution. Environmental analysis showed that phytoplankton cells abundance had significant correlation with environmental factors except silicate,and the main dominant factors were the common restriction of nitrogen and phosphate.
- phytoplankton,
- northern South China Sea,
- cell abundance,
- community structure,
- biodiversity

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