Asynchrony of spring phytoplankton response to temperature driver within a spatial heterogeneity bay of Three-Gorges Reservoir, China

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	Asynchrony of spring phytoplankton response to temperature driver within a spatial heterogeneity bay of Three-Gorges Reservoir, China
	Xu, Yaoyang; Cai, Qinghua; Ye, Lin; Shao, Meiling; Cai, QH (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; qhcai@ihb.ac.cn
刊名	LIMNOLOGICA
	2011
卷号	41 期号:3 页码:174-180
关键词	Spatial Heterogeneity Regional Temperature Driver Spring Phytoplankton Development Asynchronous Response
ISSN号	0075-9511
英文摘要	The increased air temperature is expected to have important driver on spring phytoplankton dynamics. To test whether spatial heterogeneity modifies the synchronous responses of phytoplankton to regional temperature driver, we evaluate temporal coherences for physical factors (temperature, water stability and non-algal light extinction), nutrients (nitrogen, phosphorus and silicon), and biomass and density of phytoplankton by Pearson correlation analysis and synchrony for phytoplankton community dynamics by Mantel test and nonmetric multi-dimensional scaling (NMS), during spring bloom (February 23-April 28, 2005) within Xiangxi Bay, a high spatial gradient bay of Three-Gorges Reservoir (China). The high level of temporal coherences for surface water temperature (r=0.946, p<0.01) and relative water column stability (r=0.750, p<0.01) were found between pair sites (A and B), in which the increase trends occurred with increase in regional air temperature during the study period. However, the low synchrony for phytoplankton dynamics were indeed observed between Site A and B, especially for the density of common dominant taxa (Cyclotella spp.: r=0.155, p = 0.388) and community structure (Mantel test: r=0.351). Moreover, the local habitat characteristics such as nutrient (nitrogen and phosphorus) and non-algal light extinction showed low levels of temporal coherence. It indicated that local community of phytoplankton varies rather independently within the single lentic bay with high spatial heterogeneity and that dispersal of algal organisms among locations cannot overwhelm out these local dynamics. Contrary to many studies, the present results argued that, in a small geographic area (i.e., a single reservoir bay of approximately 24 km length), spatial gradients also may influence spring phytoplankton response to regional temperature driver. (C) 2010 Elsevier GmbH. All rights reserved.
学科主题	Marine & Freshwater Biology
语种	英语
WOS记录号	WOS:000293492400005
资助机构	National Natural Science Foundation of China[40671197]; Key Project of Knowledge Innovation Program of CAS[KZCX2-YW-427] ; National Natural Science Foundation of China[40671197]; Key Project of Knowledge Innovation Program of CAS[KZCX2-YW-427] ; National Natural Science Foundation of China[40671197]; Key Project of Knowledge Innovation Program of CAS[KZCX2-YW-427] ; National Natural Science Foundation of China[40671197]; Key Project of Knowledge Innovation Program of CAS[KZCX2-YW-427]
公开日期	2011-11-09
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/16275]
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, Peoples R China; qhcai@ihb.ac.cn
推荐引用方式 GB/T 7714	Xu, Yaoyang,Cai, Qinghua,Ye, Lin,et al. Asynchrony of spring phytoplankton response to temperature driver within a spatial heterogeneity bay of Three-Gorges Reservoir, China[J]. LIMNOLOGICA,2011,41(3):174-180.
APA	Xu, Yaoyang,Cai, Qinghua,Ye, Lin,Shao, Meiling,Cai, QH ,&qhcai@ihb.ac.cn.(2011).Asynchrony of spring phytoplankton response to temperature driver within a spatial heterogeneity bay of Three-Gorges Reservoir, China.LIMNOLOGICA,41(3),174-180.
MLA	Xu, Yaoyang,et al."Asynchrony of spring phytoplankton response to temperature driver within a spatial heterogeneity bay of Three-Gorges Reservoir, China".LIMNOLOGICA 41.3(2011):174-180.