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题名: Phytoplankton dynamics and their equilibrium phases in the Yanghe Reservoir, China
作者: Hui, Tianxiang1, 2; Xie, Ping1; Guo, Longgen1; Chu, Zhaosheng3; Liu, Minghua4
通讯作者: Xie, P (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China.
关键词: equilibrium phase ; steady state ; phytoplankton dynamics ; thermal stratification ; eutrophic lakes
刊名: JOURNAL OF FRESHWATER ECOLOGY
发表日期: 2014-01-02
DOI: 10.1080/02705060.2013.836726
卷: 29, 期:1, 页:1-15
收录类别: SCI
文章类型: Editorial Material
部门归属: [Hui, Tianxiang ; Xie, Ping ; Guo, Longgen] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China ; [Hui, Tianxiang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China ; [Chu, Zhaosheng] Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China ; [Liu, Minghua] Qinhuangdao Environm Monitoring Stn, Qinhuangdao 066001, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Ecology ; Limnology
研究领域[WOS]: Environmental Sciences & Ecology ; Marine & Freshwater Biology
摘要: Phytoplankton species composition, seasonal dynamics, and spatial distribution were studied during 2009 along with key physical and chemical variables in Yanghe Reservoir, a temperate eutrophic reservoir with a long water residence time of 284days. In the northern part of the reservoir, Microcystis wesenbergii dominated throughout the summer but no steady-state phases were found, as periods of equilibrium lasted for only two weeks each. In the southern part, the first steady-state phase occurred in spring, lasted for four weeks, and was dominated by Cryptomonas erosa. The second phase was dominated by M. wesenbergii in late summer and persisted for four weeks. The results suggest that steady-state phases establish more readily in deep areas with longer residence times and more dominant species compared to shallow areas. Thermal stratification in the deep area and fluctuation of nitrogen and phosphorus concentrations in the shallow area were considered to be responsible for such differences. Canonical correspondence analysis indicated that M. wesenbergii was more strongly related to NOx-N than to temperature in both areas of the reservoir. We conclude that in eutrophic lakes, a high concentration of nutrients such as NOx-N is more important than temperature in the establishment of a steady state.
英文摘要: Phytoplankton species composition, seasonal dynamics, and spatial distribution were studied during 2009 along with key physical and chemical variables in Yanghe Reservoir, a temperate eutrophic reservoir with a long water residence time of 284days. In the northern part of the reservoir, Microcystis wesenbergii dominated throughout the summer but no steady-state phases were found, as periods of equilibrium lasted for only two weeks each. In the southern part, the first steady-state phase occurred in spring, lasted for four weeks, and was dominated by Cryptomonas erosa. The second phase was dominated by M. wesenbergii in late summer and persisted for four weeks. The results suggest that steady-state phases establish more readily in deep areas with longer residence times and more dominant species compared to shallow areas. Thermal stratification in the deep area and fluctuation of nitrogen and phosphorus concentrations in the shallow area were considered to be responsible for such differences. Canonical correspondence analysis indicated that M. wesenbergii was more strongly related to NOx-N than to temperature in both areas of the reservoir. We conclude that in eutrophic lakes, a high concentration of nutrients such as NOx-N is more important than temperature in the establishment of a steady state.
关键词[WOS]: STEADY-STATE ; THERMAL STRATIFICATION ; MICROCYSTIS-AERUGINOSA ; ALPINE LAKES ; LATE SUMMER ; ASSEMBLAGES ; DEEP ; COMMUNITIES ; COEXISTENCE ; SUCCESSION
语种: 英语
WOS记录号: WOS:000329776400001
ISSN号: 0270-5060
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20027
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
4.Qinhuangdao Environm Monitoring Stn, Qinhuangdao 066001, Peoples R China

Recommended Citation:
Hui, Tianxiang; Xie, Ping; Guo, Longgen; Chu, Zhaosheng; Liu, Minghua.Phytoplankton dynamics and their equilibrium phases in the Yanghe Reservoir, China,JOURNAL OF FRESHWATER ECOLOGY,2014,29(1):41654
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