Diatom assemblages in surface sediments from the South China Sea as environmental indicators

Rui Wu; Yahui Gao; Qi Fang; Changping Chen; Binbin Lan; Lin Sun; Dongzhao Lan

doi:10.1007/s00343-013-1181-8

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Diatom assemblages in surface sediments from the South China Sea as environmental indicators

OriginalPaper | Updated：2023-05-16

- Diatom assemblages in surface sediments from the South China Sea as environmental indicators
- Diatom assemblages in surface sediments from the South China Sea as environmental indicators
- 海洋湖沼学报（英文） 2013年31卷第1期页码：31-45
- Affiliations：
  
  1. School of Life Sciences Xiamen University
  2. Hainan Provincial Marine Development Plan and Design Research Institute
  3. State Key Laboratory of Marine Environmental Science Xiamen University
  4. Third Institute of Oceanography SOA
- Author bio：
- Funds：
  
  Supported by the National Natural Science Foundation of China (Nos. 40676026, 41076079, 40831160519) and the Basic Research Program of China (973 Program) (No. 2010CB428704)
- DOI：10.1007/s00343-013-1181-8
  中图分类号：
- 网络首发：2013-01-16，
  
  纸质出版：2013
- Accepted：
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Diatom assemblages in surface sediments from the South China Sea as environmental indicators[J]. 海洋湖沼学报（英文）, 2013,31(1):31-45.

Wu, R., Gao, Y., Fang, Q. et al. Diatom assemblages in surface sediments from the South China Sea as environmental indicators., Chin. J. Ocean. Limnol. 31, 31–45 (2013). https://doi.org/10.1007/s00343-013-1181-8
Diatom assemblages in surface sediments from the South China Sea as environmental indicators[J]. 海洋湖沼学报（英文）, 2013,31(1):31-45. DOI： 10.1007/s00343-013-1181-8.

Wu, R., Gao, Y., Fang, Q. et al. Diatom assemblages in surface sediments from the South China Sea as environmental indicators., Chin. J. Ocean. Limnol. 31, 31–45 (2013). https://doi.org/10.1007/s00343-013-1181-8 DOI：

摘要

Abstract

We studied diatom distribution from 62 samples from the uppermost 1 cm of sediment in the South China Sea (SCS)

using grabs or box corers in three cruises between 2001–2007. Fifty six genera

256 species and their varieties were identified. Dominating species included Coscinodiscus africanus

Coscinodiscus nodulifer

Cyclotella stylorum

Hemidiscus cuneiformis

Melosira sulcata

Nitzschia marina

Roperia tesselata

Thalassionema nitzschioides

Thalassiosira excentrica

and Thalassiothrix longissima. Most surface sediments in the SCS were rich in diatoms

except for a few coarse samples. Average diatom abundance in the study area was 104 607 valve/g. In terms of the abundance

ecology

and spatial distribution

seven diatom zones (Zones 1–7) were recognized. Zone 1 (northern continental shelf) is affected by warm currents

SCS northern branch of the Kuroshio

and northern coastal currents; Zone 2 (northwestern continental shelf) is affected by intense coastal currents; Zone 3 (Xisha Islands sea area) is a bathyal environment with transitional water masses; Zone 4 (sea basin) is a bathyal-to-deep sea with stable and uniform central water masses in a semi-enclosed marginal sea; Zone 5 (Nansha Islands marine area) is a pelagic environment with relatively high surface temperature; Zone 6 (northern Sunda Shelf) is a tropical shelf environment; and Zone 7 (northern Kalimantan Island shelf area) is affected by warm waters from the Indian Ocean and coastal waters. The data indicate that these diatom zones are closely related to topography

hydrodynamics

temperature

nutrients and especially the salinity. Better understanding of the relationship between diatom distribution and the oceanographic factors would help in the reconstruction of the SCS in the past.

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Keywords

references

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