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Spatio-temporal distribution of phytoplankton in the Danjiangkou Reservoir, a water source area for the South-to-North Water Diversion Project (Middle Route), China
Yin Dacong; Zheng Lingling; Song Lirong; Song Lirong,Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; lrsong@ihb.ac.cn
2011
Source PublicationCHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN0254-4059
Volume29Issue:3Pages:531-540
AbstractOne 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.
KeywordDanjiangkou Reservoir Phytoplankton South-to-north Water Diversion Project Eutrophication
Department[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
Subject AreaMarine & Freshwater Biology ; Oceanography
Funding OrganizationNational Basic Research Program of China (973 Program)[2008CB418006]; Chinese Academy of Sciences[KZCX-YW-14-1] ; National Basic Research Program of China (973 Program)[2008CB418006]; Chinese Academy of Sciences[KZCX-YW-14-1] ; National Basic Research Program of China (973 Program)[2008CB418006]; Chinese Academy of Sciences[KZCX-YW-14-1] ; National Basic Research Program of China (973 Program)[2008CB418006]; Chinese Academy of Sciences[KZCX-YW-14-1]
Indexed BySCI
Language英语
WOS IDWOS:000292558100005
Funding OrganizationNational Basic Research Program of China (973 Program)[2008CB418006]; Chinese Academy of Sciences[KZCX-YW-14-1] ; National Basic Research Program of China (973 Program)[2008CB418006]; Chinese Academy of Sciences[KZCX-YW-14-1] ; National Basic Research Program of China (973 Program)[2008CB418006]; Chinese Academy of Sciences[KZCX-YW-14-1] ; National Basic Research Program of China (973 Program)[2008CB418006]; Chinese Academy of Sciences[KZCX-YW-14-1]
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16385
Collection藻类生物学及应用研究中心_期刊论文
Corresponding AuthorSong Lirong,Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; lrsong@ihb.ac.cn
Recommended Citation
GB/T 7714
Yin Dacong,Zheng Lingling,Song Lirong,et al. Spatio-temporal distribution of phytoplankton in the Danjiangkou Reservoir, a water source area for the South-to-North Water Diversion Project (Middle Route), China[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2011,29(3):531-540.
APA Yin Dacong,Zheng Lingling,Song Lirong,Song Lirong,Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China,&lrsong@ihb.ac.cn.(2011).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,29(3),531-540.
MLA Yin Dacong,et al."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 29.3(2011):531-540.
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