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学科主题: Marine & Freshwater Biology
题名: Asynchrony of spring phytoplankton response to temperature driver within a spatial heterogeneity bay of Three-Gorges Reservoir, China
作者: Xu, Yaoyang ; Cai, Qinghua ; Ye, Lin ; Shao, Meiling
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
关键词: Spatial heterogeneity ; Regional temperature driver ; Spring phytoplankton development ; Asynchronous response
刊名: LIMNOLOGICA
发表日期: 2011
卷: 41, 期:3, 页:174-180
收录类别: SCI
部门归属: [Xu, YY; Cai, QH; Ye, L; Shao, ML] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Xu, YY] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
资助者: National Natural Science Foundation of China[40671197]; Key Project of Knowledge Innovation Program of CAS[KZCX2-YW-427]
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.
语种: 英语
WOS记录号: WOS:000293492400005
ISSN号: 0075-9511
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16275
Appears in Collections:淡水生态学研究中心_期刊论文

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Recommended Citation:
Xu, Yaoyang; Cai, Qinghua; Ye, Lin; Shao, Meiling.Asynchrony of spring phytoplankton response to temperature driver within a spatial heterogeneity bay of Three-Gorges Reservoir, China,LIMNOLOGICA,2011,41(3):174-180
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