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学科主题: Marine & Freshwater Biology; Oceanography
题名: Spatio-temporal distribution of phytoplankton in the Danjiangkou Reservoir, a water source area for the South-to-North Water Diversion Project (Middle Route), China
作者: Yin Dacong1, 2; Zheng Lingling1; Song Lirong1
通讯作者: Song Lirong,Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China ; lrsong@ihb.ac.cn
关键词: Danjiangkou Reservoir ; phytoplankton ; South-to-North Water Diversion Project ; eutrophication
刊名: CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
发表日期: 2011-05-01
DOI: 10.1007/s00343-011-0120-9
卷: 29, 期:3, 页:531-540
收录类别: SCI
文章类型: Article
部门归属: [Yin, DC; Zheng, LL; Song, LR] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Yin, DC] Minist Water Resources, Yangtze River Sci Res Inst, Wuhan 430010, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
资助者: National Basic Research Program of China (973 Program)[2008CB418006]; Chinese Academy of Sciences[KZCX-YW-14-1]
类目[WOS]: Limnology ; Oceanography
研究领域[WOS]: Marine & Freshwater Biology ; Oceanography
摘要: One of the water source areas of the South-to-North Water Diversion Project is the Danjiangkou Reservoir (DJKR). To understand seasonal variation in phytoplankton composition, abundance and distribution in the DJKR area before water diversion, as well as to estimate potential risks of water quality after water diversion, we conducted an investigation on phytoplankton in the DJKR from August 2008 to May 2009. The investigation included 10 sampling sites, each with four depths of 0.5, 5, 10, and 20 m. In this study, 117 taxa belonging to 76 genera were identified, consisting of diatoms (39 taxa), green algae (47 taxa), blue-green algae (19 taxa), and others (12 taxa). Annual average phytoplankton abundance was 2.01x10(6) ind./L, and the highest value was 14.72 x 10(6) ind/L (at site 3 in August 2008). Phytoplankton abundance in front of the Danjiangkou Dam (DJKD) was higher than that of the Danjiang Reservoir Basin. Phytoplankton distribution showed a vertical declining trend from 0.5 m to 20 m at most sites in August 2008 (especially at sites of 1, 2, 4 and 10), but no distinct pattern in other sampling months. In December 2008 and March 2009, Stephanodiscus sp. was the most abundant species, amounting to 55.23% and 72.34%, respectively. We propose that high abundance of Stephanodiscus sp. may have contributed greatly to the frequent occurrence of Stephanodiscus sp. blooms in middle-low reaches of the Hanjiang River during the early spring of 2009. In comparison with previous studies conducted from 1992 to 2006, annual average phytoplankton density, green algae and blue-green algae species, as well as major nutrient concentrations increased, while phytoplankton diversity indices declined. This indicates a gradual decline in water quality. More research should be conducted and countermeasures taken to prevent further deterioration of water quality in the DJKR.
英文摘要: One of the water source areas of the South-to-North Water Diversion Project is the Danjiangkou Reservoir (DJKR). To understand seasonal variation in phytoplankton composition, abundance and distribution in the DJKR area before water diversion, as well as to estimate potential risks of water quality after water diversion, we conducted an investigation on phytoplankton in the DJKR from August 2008 to May 2009. The investigation included 10 sampling sites, each with four depths of 0.5, 5, 10, and 20 m. In this study, 117 taxa belonging to 76 genera were identified, consisting of diatoms (39 taxa), green algae (47 taxa), blue-green algae (19 taxa), and others (12 taxa). Annual average phytoplankton abundance was 2.01x10(6) ind./L, and the highest value was 14.72 x 10(6) ind/L (at site 3 in August 2008). Phytoplankton abundance in front of the Danjiangkou Dam (DJKD) was higher than that of the Danjiang Reservoir Basin. Phytoplankton distribution showed a vertical declining trend from 0.5 m to 20 m at most sites in August 2008 (especially at sites of 1, 2, 4 and 10), but no distinct pattern in other sampling months. In December 2008 and March 2009, Stephanodiscus sp. was the most abundant species, amounting to 55.23% and 72.34%, respectively. We propose that high abundance of Stephanodiscus sp. may have contributed greatly to the frequent occurrence of Stephanodiscus sp. blooms in middle-low reaches of the Hanjiang River during the early spring of 2009. In comparison with previous studies conducted from 1992 to 2006, annual average phytoplankton density, green algae and blue-green algae species, as well as major nutrient concentrations increased, while phytoplankton diversity indices declined. This indicates a gradual decline in water quality. More research should be conducted and countermeasures taken to prevent further deterioration of water quality in the DJKR.
关键词[WOS]: TEMPERATE ESTUARY ; RIVER ; QUALITY ; IMPOUNDMENTS ; ASSEMBLAGES ; INDICATORS ; YANGTZE ; IMPACTS ; BLOOM ; LAKE
语种: 英语
WOS记录号: WOS:000292558100005
ISSN号: 0254-4059
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16385
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Minist Water Resources, Yangtze River Sci Res Inst, Wuhan 430010, Peoples R China

Recommended Citation:
Yin Dacong; Zheng Lingling; Song Lirong.Spatio-temporal distribution of phytoplankton in the Danjiangkou Reservoir, a water source area for the South-to-North Water Diversion Project (Middle Route), China,CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2011,29(3):531-540
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