Chinese Bulletin of Botany ›› 2016, Vol. 51 ›› Issue (3): 353-362.DOI: 10.11983/CBB15094

• EXPERIMENTAL COMMUNICATIONS • Previous Articles     Next Articles

Community Structure of Phytoplankton and Its Relation with Environmental Factors in Xinhua Lake of China

Zhishun Xiao, Cong Lin, Shuang Yang, Yan Liu, Yawen Fan*   

  1. Provincial Key Laboratory of Botany, College of Life Sciences and Technology, Harbin Normal University, Harbin 150025, China
  • Received:2015-06-01 Accepted:2015-09-25 Online:2016-05-01 Published:2016-05-24
  • Contact: Fan Yawen
  • About author:

    ? These authors contributed equally to this paper

Abstract:

We investigated the community structure of phytoplankton in Xinhua Lake from May to October in 2014, and analyzed its relationship with environmental factors. Basic data were provided for dynamically monitoring the lake condi- tion. A total of 135 phytoplankton taxa belonging to 5 phyla and 63 genera were observed: 56 Bacillariophyta, 49 Chlorophyta, 15 Cyanophyta, 12 Euglenophyta, and 3 Pyrrhophyta. We found 24 dominant taxa: 14 Chlorophyta, 6 Cyanophyta, 3 Bacillariophyta, and only 1 Euglenophyta. All these dominant taxa showed seasonal alteration in preva- lence. Xinhua Lake was dominated by Chlorophyta and Bacillariophyta. The cell density of the phytoplankton ranged from 37.57×106 to 72.37×106 cells·L-1, and the mean phytoplankton abundance was 52.13×106 cells·L-1. The Simpson, Shan- non and Pielou indexes for the phytoplankton community were 0.642-0.928, 1.698-3.1, and 0.324-0.561, respectively. These three indexes showed the same variation tendency, with the highest value found in autumn and the lowest in spring. Water temperature, pH, total phosphorus, biochemical oxygen demand, dissolved oxygen and hydrodynamic force were the main environmental factors affecting the phytoplankton community structure in this lake.