A preliminary study on nanodiatoms from Holocene sediments in the Jiulong River and Dongyu Island of Fujian Province, China

GAO Ya-hui; CHEN Chang-ping; LI Yang; WANG Kai-fa; ZHI Chong-yuan

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Article Navigation > Haiyang Xuebao > 2003 > 25(6): 89-98

GAO Ya-hui, CHEN Chang-ping, LI Yang, WANG Kai-fa, ZHI Chong-yuan. A preliminary study on nanodiatoms from Holocene sediments in the Jiulong River and Dongyu Island of Fujian Province, China[J]. Haiyang Xuebao, 2003, 25(6): 89-98.

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A preliminary study on nanodiatoms from Holocene sediments in the Jiulong River and Dongyu Island of Fujian Province, China

1.
School of Life Sciences, Xiamen University, Xiamen 361005, China
2.
Department of Marine Geology and Geophysics, Tongji University, Shanghai 200092, China

Received Date: 2002-08-16
Rev Recd Date: 2003-05-28

Abstract

Abstract

The species composition and cell density of nanodiatoms(cell size smaller than 20 μm) were investigated with TEM for the sedimental samples from different sedimental sections at modern intertidal zones and Middle Holocene in the Jiulong River, and in Dongyu Island in late Middle Holocene and Late Holocene.In total, 26 diatom species (including varieties) belonging to 12 genus of Bacillariophyta were found.The ecological distribution of each species was described to gether with TEM photographs.The dominant species at the modern intertidal zones in the estuary of Jiulong River is Thalassionema nitzschioides, and that in Middle Holocene is Navicula climacospheniae and Thalassionema nitzschioides; in Dongyu Island in late Middle Holocene and Late Holocene the dominant species is Cyclotella striata and Thalassionema nitzschioides.The percentage contribution of nanodiatoms to total diatom assemblages in sedimental sections is relatively high which can be up to 86.7%, showing the importance of nanodiatoms in diatom assemblages in sediments.
- nanodiatom,
- species,
- TEM,
- Jiulong River

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References(14)

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