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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/25583

Title: Reduction of primary production and changing of nutrient ratio in the East China Sea: Effect of the Three Gorges Dam?
Authors: Gwo-Ching Gong;Jeng Chang;Kuo-Ping Chiang;Tung-Ming Hsiung;Chin-Chang Hung;Shui-Wang Duan;L. A. Codispoti
Contributors: NTOU:Department of Environmental Biology and Fisheries Science
國立臺灣海洋大學:環境生物與漁業科學學系
Keywords: CONTINENTAL-SHELF;RIVER;CHANGJIANG;SUMMER;BIOGEOCHEMISTRY;DYNAMICS;NITROGEN;CARBON;HPL
Date: 2006
Issue Date: 2011-10-20T08:24:38Z
Publisher: GEOPHYSICAL RESEARCH LETTERS
Abstract: Abstract:It has been documented that the global proliferation of dam construction on the major river has reduced nutrient and sediment loading to coastal environments. As a consequence, dams can impact marine ecological systems by changing nutrient concentrations and ratios in the coastal zone. From 1998–2004, we conducted a high resolution oceanographic investigation of the East China Sea (ECS) before and after the first filling phase (June 2003) of the Three-Gorges Dam (TGD). We found that the Si:N ratio in the River affected region changed from 1.5 in 1998 to 0.4 in 2004 with sediment loading significantly reducing (about 55%) at the Datong station after June 2003. Most importantly, we found that the PP had declined by 86% between 1998 and 2003, both measured during the high flood season. The results suggest that the ECS ecosystem may respond sensitively to changes in the nutrient supply arising from the TGD project.
Relation: 33(7), pp.L07610
URI: http://ntour.ntou.edu.tw/handle/987654321/25583
Appears in Collections:[海洋環境與生態研究所] 期刊論文
[環境生物與漁業科學學系] 期刊論文
[海洋生物研究所] 期刊論文
[生命科學暨生物科技學系] 期刊論文

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