Patterns of asynchrony for phytoplankton fluctuations from reservoir mainstream to a tributary bay in a giant dendritic reservoir (Three Gorges Reservoir, China)

doi:10.1007/s00027-011-0221-8

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	Patterns of asynchrony for phytoplankton fluctuations from reservoir mainstream to a tributary bay in a giant dendritic reservoir (Three Gorges Reservoir, China)
	Xu, Yaoyang 1,2; Cai, Qinghua 1; Shao, Meiling 1; Han, Xinqin 1,2; Cai, QH (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China.
刊名	AQUATIC SCIENCES
	2012-04-01
卷号	74 期号:2 页码:287-300
关键词	Total Algal Abundance Taxonomic Composition Temporal Coherence Aquatic Habitat Heterogeneity Dendritic Reservoir
ISSN号	1015-1621
DOI	10.1007/s00027-011-0221-8
文献子类	Article
英文摘要	Seasonal fluctuations of phytoplankton have often been regarded as one of the important cyclic events in aquatic ecosystems, and have even been emphasized as an important sign of regional climatic variability in limnology. However, few attempts have been made to examine synchrony for phytoplankton fluctuations among different habitats in a single reservoir system. The present study employed Spearman rank correlation analysis and the Mantel test to assess levels of synchrony for phytoplankton abundance and taxonomic composition from reservoir mainstream to a tributary bay (Xiangxi Bay) in a giant dendritic reservoir, China (Three Gorges Reservoir, TGR). At the selected scale, asynchronous patterns of phytoplankton were found when looking at total abundance and taxonomic composition, suggesting that regional drivers were not strong enough to synchronize phytoplankton fluctuations, and local regulators were predominant. As a riverine system, the mainstream of TGR had high levels of algal synchrony, while asynchronous patterns of phytoplankton were detected within Xiangxi Bay, which is characterized as a lacustrine system. The present study further confirmed that external hydrological disturbances strongly homogenize habitat conditions and synchronize phytoplankton fluctuations within the mainstream, while spatial divergence of phytoplankton succession depend on local habitat conditions within Xiangxi Bay. Moreover, low synchrony of phytoplankton between the mainstream and Xiangxi Bay is probably caused by spatial divergence of phytoplankton succession within Xiangxi Bay and the lack of succession in the rapidly flushed mainstream. Independently of these mechanisms possibly explaining phytoplankton fluctuations, the present study has also an applied perspective to the improvement of a long-term observation program in which phytoplankton trends at the mainstream scale could be compiled from the data set in a single site, while a set of sampling sites should be required at the Xiangxi Bay scale.; Seasonal fluctuations of phytoplankton have often been regarded as one of the important cyclic events in aquatic ecosystems, and have even been emphasized as an important sign of regional climatic variability in limnology. However, few attempts have been made to examine synchrony for phytoplankton fluctuations among different habitats in a single reservoir system. The present study employed Spearman rank correlation analysis and the Mantel test to assess levels of synchrony for phytoplankton abundance and taxonomic composition from reservoir mainstream to a tributary bay (Xiangxi Bay) in a giant dendritic reservoir, China (Three Gorges Reservoir, TGR). At the selected scale, asynchronous patterns of phytoplankton were found when looking at total abundance and taxonomic composition, suggesting that regional drivers were not strong enough to synchronize phytoplankton fluctuations, and local regulators were predominant. As a riverine system, the mainstream of TGR had high levels of algal synchrony, while asynchronous patterns of phytoplankton were detected within Xiangxi Bay, which is characterized as a lacustrine system. The present study further confirmed that external hydrological disturbances strongly homogenize habitat conditions and synchronize phytoplankton fluctuations within the mainstream, while spatial divergence of phytoplankton succession depend on local habitat conditions within Xiangxi Bay. Moreover, low synchrony of phytoplankton between the mainstream and Xiangxi Bay is probably caused by spatial divergence of phytoplankton succession within Xiangxi Bay and the lack of succession in the rapidly flushed mainstream. Independently of these mechanisms possibly explaining phytoplankton fluctuations, the present study has also an applied perspective to the improvement of a long-term observation program in which phytoplankton trends at the mainstream scale could be compiled from the data set in a single site, while a set of sampling sites should be required at the Xiangxi Bay scale.
WOS关键词	MICROBIAL COMMUNITY DYNAMICS ; NORTH-TEMPERATE LAKES ; POPULATION-DYNAMICS ; TEMPORAL COHERENCE ; XIANGXI BAY ; EUTROPHIC RESERVOIR ; SPATIAL SYNCHRONY ; DISPERSAL ; ABUNDANCE ; CHLOROPHYLL
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
语种	英语
WOS记录号	WOS:000302518900006
资助机构	CAS[KZCX2-YW-427]; National Natural Science Foundation of China[40671197]; State Key Laboratory FEBL[2008FBZ02] ; CAS[KZCX2-YW-427]; National Natural Science Foundation of China[40671197]; State Key Laboratory FEBL[2008FBZ02] ; CAS[KZCX2-YW-427]; National Natural Science Foundation of China[40671197]; State Key Laboratory FEBL[2008FBZ02] ; CAS[KZCX2-YW-427]; National Natural Science Foundation of China[40671197]; State Key Laboratory FEBL[2008FBZ02]
公开日期	2012-09-25
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/16879]
专题	水生生物研究所_淡水生态学研究中心_期刊论文
通讯作者	Cai, QH (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xu, Yaoyang,Cai, Qinghua,Shao, Meiling,et al. Patterns of asynchrony for phytoplankton fluctuations from reservoir mainstream to a tributary bay in a giant dendritic reservoir (Three Gorges Reservoir, China)[J]. AQUATIC SCIENCES,2012,74(2):287-300.
APA	Xu, Yaoyang,Cai, Qinghua,Shao, Meiling,Han, Xinqin,&Cai, QH .(2012).Patterns of asynchrony for phytoplankton fluctuations from reservoir mainstream to a tributary bay in a giant dendritic reservoir (Three Gorges Reservoir, China).AQUATIC SCIENCES,74(2),287-300.
MLA	Xu, Yaoyang,et al."Patterns of asynchrony for phytoplankton fluctuations from reservoir mainstream to a tributary bay in a giant dendritic reservoir (Three Gorges Reservoir, China)".AQUATIC SCIENCES 74.2(2012):287-300.