| Distribution of phytoplankton in the Three-Gorge Reservoir during rainy and dry seasons | |
| Zeng, Hui; Song, Lirong; Yu, Zhigang; Chen, Hongtao; Song, LR, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Hubei 430072, Peoples R China | |
| 2006-08-31 | |
| Source Publication | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| ISSN | 0048-9697 |
| Volume | 367Issue:2-3Pages:999-1009 |
| Abstract | 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.; 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. |
| Subtype | Article |
| Keyword | Phytoplankton Distribution Three-gorge Reservoir Rainy And Dry Season Eutrophication |
| Department | Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Hubei 430072, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China; Ocean Univ China, Qingdao 266003, Peoples R China |
| Subject Area | Environmental Sciences |
| DOI | 10.1016/j.scitotenv.2006.03.001 |
| WOS Headings | Science & Technology ; Life Sciences & Biomedicine |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| WOS ID | WOS:000240042700042 |
| WOS Keyword | BLACK-SEA ; DANUBE RIVER ; YANGTZE-RIVER ; ECOSYSTEM ; WESTERN ; DAM ; BIOGEOCHEMISTRY ; CONSEQUENCES ; ABUNDANCE ; CARBON |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihb.ac.cn/handle/152342/8858 |
| Collection | 期刊论文 |
| Corresponding Author | Song, LR, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Hubei 430072, Peoples R China |
| Affiliation | 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 |
| Recommended Citation 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,&Song, LR, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Hubei 430072, Peoples R China.(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. |
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