Hydrobiologia

, Volume 598, Issue 1, pp 35–45

The distributions of autumn picoplankton in relation to environmental factors in the reservoirs along the Wujiang River in Guizhou Province, SW China

Authors

    • State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry Chinese Academy of Sciences
  • Cong-Qiang Liu
    • State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry Chinese Academy of Sciences
  • Fushun Wang
    • Institute of Applied Radiation, School of Environmental and Chemical EngineeringShanghai University
  • Yuanxiu Yu
    • State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry Chinese Academy of Sciences
    • Graduate SchoolChinese Academy of Sciences
  • Lihua Zhang
    • State Key Laboratory of Estuarine and Coastal ResearchEast China Normal University
Primary research paper

DOI: 10.1007/s10750-007-9138-6

Cite this article as:
Wang, B., Liu, C., Wang, F. et al. Hydrobiologia (2008) 598: 35. doi:10.1007/s10750-007-9138-6

Abstract

Autumn picoplankton (Synechococcus, picoeukaryotes and heterotrophic bacteria) and environmental factors have been investigated in a series of reservoirs along the Wujiang River in Guizhou Province, SW China. The average abundances of Synechococcus, picoeukaryotes and heterotrophic bacteria was 104, 102 and 106 cells ml−1, respectively. In autumn meso-eutrophic reservoirs, thermal stratification was clear and abundances of different picoplankton groups in release water was low; whereas these phenomena were not obvious in autumn hypereutrophic reservoir. Picoplankton numbers decreased with increasing water depth and showed a positive correlation with water temperature, which reflected the importance of light and temperature on the picoplankton growth. Contribution of Synechococcus to total phytoplankton production and contribution of picoeukaryotes to total phytoplankton production asynchronous changed with varying trophic states. Synechococcus preferred meso-eutrophic reservoirs over hypereutrophic reservoir and picoeukaryotes showed no preference for the investigated reservoirs in autumn.

Keywords

SynechococcusPicoeukaryotesHeterotrophic bacteriaTemperature

Copyright information

© Springer Science+Business Media B.V. 2007