Hydrobiologia

, Volume 607, Issue 1, pp 41–49

Controlling factors of spring–summer phytoplankton succession in Lake Taihu (Meiliang Bay, China)

Primary research paper

DOI: 10.1007/s10750-008-9365-5

Cite this article as:
Ke, Z., Xie, P. & Guo, L. Hydrobiologia (2008) 607: 41. doi:10.1007/s10750-008-9365-5

Abstract

The spring–summer successions of phytoplankton and crustacean zooplankton were examined weekly in Meiliang Bay of the subtropical Lake Taihu in 2004 and 2005. During the study period, the ecosystem of Meiliang Bay was characterized by (i) clearly declined nitrogen compounds (nitrate, TN, and ammonium) and slowly increased phosphorus compounds (TP and SRP), (ii) increased total phytoplankton density and rapid replacement of chlorophyta (mainly Ulothrix) by cyanobacteria (mainly Microcystis), and (iii) rapid replacement of large-sized crustaceans (Daphnia and Moina) by small-sized ones (Bosmina, Limnoithona, and Ceriodaphnia). Results from the CCA and correlation analysis indicate that the spring-summer phytoplankton succession was primarily controlled by abiotic factors. Cyanobacteria were mainly promoted by increased temperature and decreased concentrations of nitrogen compounds. The pure contribution of crustacean was low for the variation of phytoplankton suggesting a weak top-down control by crustacean zooplankton in the subtropical Lake Taihu.

Keywords

MicrocystisCrustacean zooplanktonPhytoplanktonCanonical correspondence analysis (CCA)Lake Taihu

Supplementary material

10750_2008_9365_MOESM1_ESM.pdf (991 kb)
(PDF 991 kb)

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.Donghu Experimental Station of Lake Ecosystems, State Key Laboratory for Freshwater Ecology and Biotechnology of China, Institute of HydrobiologyThe Chinese Academy of SciencesWuhanChina