Hydrobiologia

, Volume 605, Issue 1, pp 143–157 | Cite as

Spatial and temporal distribution of nanoflagellates in the northern South China Sea

  • Bangqin Huang
  • Wenlu Lan
  • Zhenrui Cao
  • Minhan Dai
  • Lingfeng Huang
  • Nianzhi Jiao
  • Huasheng Hong
Primary research paper

Abstract

Seasonal variation, horizontal and vertical distribution, and cell size of nanoflagellates, together with physico-chemical and biological factors, were studied in the northern South China Sea (SCS). It was found that nanoflagellate abundance ranged from 0.157 × 103 to 9.193 × 103 cells/ml (with a mean of 0.891 × 103) in winter (February, 2004), while it ranged from 0.107 × 103 to 5.417 × 103  cells/ml (with a mean of 0.599 × 103) in summer (July, 2004). Nanoflagellates were more abundant in winter than summer in offshore regions, showing an unique seasonal pattern in this subtropical marginal sea. The abundance of nanoflagellates decreased from the estuary to the offshore region. Vertical distribution of nanoflagellates coupled well with that of bacteria and Chl a. The small size fraction of less than 5 μm dominated the nanoflagellate populations. Wind-driven mixing, eddies, availability of nutrients as well as Chl a and abundance of picoplankton seemed to be the major controlling factors for the spatial distribution and seasonal variation of nanoflagellates in the study area.

Keywords

Nanoflagellates Abundance Seasonal variation Distribution Controlling factors Northern South China Sea 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Bangqin Huang
    • 1
  • Wenlu Lan
    • 1
  • Zhenrui Cao
    • 1
  • Minhan Dai
    • 1
  • Lingfeng Huang
    • 2
  • Nianzhi Jiao
    • 1
  • Huasheng Hong
    • 1
  1. 1.State Key Laboratory of Marine Environmental Science, Environmental Science Research CenterXiamen UniversityXiamenChina
  2. 2.Department of OceanographyXiamen UniversityXiamenChina

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