Distribution of phytoplankton in the Three-Gorge Reservoir during rainy and dry seasons

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	Distribution of phytoplankton in the Three-Gorge Reservoir during rainy and dry seasons
	Zeng, Hui ; Song, Lirong ; Yu, Zhigang ; Chen, Hongtao
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2006-08-31
卷号	367 期号:2-3 页码:999-1009
关键词	phytoplankton distribution three-gorge reservoir rainy and dry season eutrophication
ISSN号	0048-9697
通讯作者	Song, LR, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Hubei 430072, Peoples R China
中文摘要	After damming of the Yangtze River, in order to explore the impacts of the Three-Gorge Dam (TGD) on the aquatic ecosystem, phytoplankton composition, abundance and biomass spatial distribution were studied in the Three-Gorge Reservoir (TGR), and the closest upstream anabranch Xiangxi River, which is 38 kin away from the Three-Gorge Dam (TGD) during August (rainy season) 2004 and April (dry season) 2005. In surveys, 6 transects (2 downstream and 4 cross-stream) and 25 stations have been investigated and 314 samples were collected from the surface to the river bed with water samplers. In TGR, 63 taxa and 60 taxa were identified in the rainy and dry seasons, respectively. In the Xiangxi River, 39 taxa were observed in the rainy and dry seasons. Algal blooms occurred in the Xiangxi River and at the influx region of the Yangtze and Xiangxi in both seasons, but had not occurred prior to damming. In the rainy season, the dominant species was Chroomonas acuta with 1.84 x 10(7) cells l(-1), and in the dry season the dominant species were Asterionella formosa and Cryptomonas ovata with 1.34 x 10(7) cells l(-1) and 1.79 x 10(6) cells(.)l(-1), respectively. In the main channel of TGR, there were no significant correlations between phytoplankton abundance and the concentrations of the main soluble nutrients. In the Xiangxi River, significant negative correlations were observed between phytoplankton abundance and nitrate (Spearman, p < 0.01, n=21), phosphate (Spearman, p < 0.05, n=21) and silicate (Spearman, p < 0.01, n=21) in the rainy season, and similar correlations were also observed with nitrate (Spearman, p < 0.05, n=28) and silicate (Speannan, p < 0.01, n=28), but not with phosphate in the dry season. Since the damming of the Yangtze River, eutrophication in the anabranch within the backwater has occurred and become severe, and the frequency of algal bloom within TGR and anabranches is expected to increase. (c) 2006 Elsevier B.V. All rights reserved.
英文摘要	After damming of the Yangtze River, in order to explore the impacts of the Three-Gorge Dam (TGD) on the aquatic ecosystem, phytoplankton composition, abundance and biomass spatial distribution were studied in the Three-Gorge Reservoir (TGR), and the closest upstream anabranch Xiangxi River, which is 38 kin away from the Three-Gorge Dam (TGD) during August (rainy season) 2004 and April (dry season) 2005. In surveys, 6 transects (2 downstream and 4 cross-stream) and 25 stations have been investigated and 314 samples were collected from the surface to the river bed with water samplers. In TGR, 63 taxa and 60 taxa were identified in the rainy and dry seasons, respectively. In the Xiangxi River, 39 taxa were observed in the rainy and dry seasons. Algal blooms occurred in the Xiangxi River and at the influx region of the Yangtze and Xiangxi in both seasons, but had not occurred prior to damming. In the rainy season, the dominant species was Chroomonas acuta with 1.84 x 10(7) cells l(-1), and in the dry season the dominant species were Asterionella formosa and Cryptomonas ovata with 1.34 x 10(7) cells l(-1) and 1.79 x 10(6) cells(.)l(-1), respectively. In the main channel of TGR, there were no significant correlations between phytoplankton abundance and the concentrations of the main soluble nutrients. In the Xiangxi River, significant negative correlations were observed between phytoplankton abundance and nitrate (Spearman, p < 0.01, n=21), phosphate (Spearman, p < 0.05, n=21) and silicate (Spearman, p < 0.01, n=21) in the rainy season, and similar correlations were also observed with nitrate (Spearman, p < 0.05, n=28) and silicate (Speannan, p < 0.01, n=28), but not with phosphate in the dry season. Since the damming of the Yangtze River, eutrophication in the anabranch within the backwater has occurred and become severe, and the frequency of algal bloom within TGR and anabranches is expected to increase. (c) 2006 Elsevier B.V. All rights reserved.
学科主题	Environmental Sciences
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	BLACK-SEA ; DANUBE RIVER ; YANGTZE-RIVER ; ECOSYSTEM ; WESTERN ; DAM ; BIOGEOCHEMISTRY ; CONSEQUENCES ; ABUNDANCE ; CARBON
收录类别	SCI
语种	英语
WOS记录号	WOS:000240042700042
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/8858]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Hubei 430072, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Ocean Univ China, Qingdao 266003, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Hui,Song, Lirong,Yu, Zhigang,et al. Distribution of phytoplankton in the Three-Gorge Reservoir during rainy and dry seasons[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2006,367(2-3):999-1009.
APA	Zeng, Hui,Song, Lirong,Yu, Zhigang,&Chen, Hongtao.(2006).Distribution of phytoplankton in the Three-Gorge Reservoir during rainy and dry seasons.SCIENCE OF THE TOTAL ENVIRONMENT,367(2-3),999-1009.
MLA	Zeng, Hui,et al."Distribution of phytoplankton in the Three-Gorge Reservoir during rainy and dry seasons".SCIENCE OF THE TOTAL ENVIRONMENT 367.2-3(2006):999-1009.