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Dynamics of Phytoplankton Community in Relation to Environmental Factors in a Tropical Pumped-Water Storage Reservoir

  • Qiuhua Li
  • Ren Hu
Chapter
Part of the Monographiae Biologicae book series (MOBI, volume 91)

Abstract

Phytoplankton and environmental variables were measured every 2 months in 2005 in Dajingshan, a subtropical pumped-water reservoir in South China. Phytoplankton community structure and its relationship with environmental factors including hydrological and chemical variables were explored by multivariate analysis. In total, over 100 species of algae were identified. Total abundance ranged from 0.85 × 106 to 106.27 × 106 cells/L, and total biomass from 1.0 to 16.8 mg/L (mean 6.94 mg/L). The community was dominated by Pseudanabaena limnetica, but in spring, Synedra ulna and P. limnetica were co-dominant. The community was relatively stable, but change rates of community structure in autumn and summer were higher than in winter and spring. Ordination by canonical correspondence analysis (CCA) divided all samples into four groups, distributed in the four districts formed by axes 1 and 2, corresponding to the four seasons: winter, spring, summer and autumn. Most samples were located in the summer and autumn districts. Fifty-four main species of phytoplankton were selected for CCA. Cyanophyta (Cyanobacteria), Bacillariophyta and Euglenophyta were restricted to the districts at the left of axis 1, but most Chlorophyta, Chrysophyta and Cryptophyta were to the right. CCA revealed that temperature and precipitation were important in driving dynamics of species composition and phytoplankton abundance.

Keywords

Chemical Oxygen Demand Total Phosphorus Canonical Correspondence Analysis Phytoplankton Community Nitrate Nitrogen 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Netherlands 2012

Authors and Affiliations

  1. 1.Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou ProvinceGuizhou Normal UniversityGuiyangChina
  2. 2.Institute of HydrobiologyJinan UniversityGuangzhouP.R. China

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