S China Univ Technol, Coll Food & Bioengn, Guangzhou 510640, Peoples R China; Chinese Acad Sci, Wuhan 430079, Peoples R China; Chinese Minist Water Resources, Inst Reservoir Fisheries, Wuhan 430079, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
WOS标题词:
Science & Technology
; Life Sciences & Biomedicine
类目[WOS]:
Environmental Sciences
研究领域[WOS]:
Environmental Sciences & Ecology
摘要:
The purpose of the research is to study the seasonal succession of protozoa community and the effect of water quality on the protozoa community to characterize biochemical processes occurring at a eutrophic Lake Donghu, a large shallow lake in Wuhan City, China. Samples of protozoa communities were obtained monthly at three stations by PFU (polyurethane foam unit) method over a year. Synchronously, water samples also were taken from the stations for the water chemical quality analysis. Six major variables were examined in a principal component analysis (PCA), which indicate the fast changes of water quality in this station I and less within-year variation and a comparatively stable water quality in stations II and III. The community data were analyzed using multivariate techniques, and we show that clusters are rather mixed and poorly separated, suggesting that the community structure is changing gradually, giving a slight merging of clusters form the summer to the autumn and the autumn to the winter. Canonical correspondence analysis (CCA) was used to infer the relationship between water quality variables and phytoplankton community structure, which changed substantially over the survey period. From the analysis of cluster and CCA, coupled by community pollution value (CPV), it is concluded that the key factors driving the change in protozoa community composition in Lake Donghu was water qualities rather than seasons. (c) 2006 Elsevier Ltd. All rights reserved.
英文摘要:
The purpose of the research is to study the seasonal succession of protozoa community and the effect of water quality on the protozoa community to characterize biochemical processes occurring at a eutrophic Lake Donghu, a large shallow lake in Wuhan City, China. Samples of protozoa communities were obtained monthly at three stations by PFU (polyurethane foam unit) method over a year. Synchronously, water samples also were taken from the stations for the water chemical quality analysis. Six major variables were examined in a principal component analysis (PCA), which indicate the fast changes of water quality in this station I and less within-year variation and a comparatively stable water quality in stations II and III. The community data were analyzed using multivariate techniques, and we show that clusters are rather mixed and poorly separated, suggesting that the community structure is changing gradually, giving a slight merging of clusters form the summer to the autumn and the autumn to the winter. Canonical correspondence analysis (CCA) was used to infer the relationship between water quality variables and phytoplankton community structure, which changed substantially over the survey period. From the analysis of cluster and CCA, coupled by community pollution value (CPV), it is concluded that the key factors driving the change in protozoa community composition in Lake Donghu was water qualities rather than seasons. (c) 2006 Elsevier Ltd. All rights reserved.
关键词[WOS]:
BIOTIC INDEX
; ZOOPLANKTON COMMUNITY
; MULTIVARIATE APPROACH
; MICROBIAL COMMUNITY
; CLUSTER-ANALYSIS
; NORTH-SEA
; VARIABILITY
; QUALITY
; SHALLOW
; BIOMASS
1.S China Univ Technol, Coll Food & Bioengn, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Wuhan 430079, Peoples R China 3.Chinese Minist Water Resources, Inst Reservoir Fisheries, Wuhan 430079, Peoples R China 4.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation:
Jiang, Jian-Guo; Wu, Sheng-Gui; Shen, Yun-Fen.Effects of seasonal succession and water pollution on the protozoan community structure in an eutrophic lake,CHEMOSPHERE,2007,66(3):523-532
