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Responses of a coastal phytoplankton community to increased nutrient input from the Changjiang (Yangtze) River
Zhou, Ming-jiang; Shen, Zhi-liang; Yu, Ren-cheng
2008-07-15
Source PublicationCONTINENTAL SHELF RESEARCH
ISSN0278-4343
Volume28Issue:12Pages:1483-1489
SubtypeArticle
AbstractNutrient input from the Changjiang River (Yangtze River) has been increasing dramatically since the 1960s. At the mouth of the Changjiang River, the nitrate concentration has increased about three-fold in 40 years, from 20.5 mu mol/L in the 1960s to 59.1 mu mol/L in the 1980s and to 80.6 mu mol/L in 1990-2004. Phosphate concentration increased by a factor of 30%, from 0.59 mu mol/L in the 1980s to 0.77 mu mol/L in 1990-2004. The increasing nitrate input has arisen mostly from the mid and lower reaches of the Changjiang River, where the river meets one of the most strongly developed agriculture areas in China. Responses of the coastal phytoplankton community to the increasing nutrient inputs are also seen in the available monitoring data. First, a trend of increasing phytoplankton standing stock from 1984 to 2002 appeared in the Changjiang River estuary and adjacent coastal waters, especially in late spring. Secondly, the proportion of diatoms in the whole phytoplankton community showed a decreasing trend from about 85% in 1984 to about 60% in 2000. Finally, red tides/harmful algal blooms increased dramatically in this area in terms of both number and scale. About 30-80 red tide events were recorded each year from 2000 to 2005 in the East China Sea. The scale of some blooms has been in excess of 10,000 km(2). (c) 2008 Elsevier Ltd. All rights reserved.; Nutrient input from the Changjiang River (Yangtze River) has been increasing dramatically since the 1960s. At the mouth of the Changjiang River, the nitrate concentration has increased about three-fold in 40 years, from 20.5 mu mol/L in the 1960s to 59.1 mu mol/L in the 1980s and to 80.6 mu mol/L in 1990-2004. Phosphate concentration increased by a factor of 30%, from 0.59 mu mol/L in the 1980s to 0.77 mu mol/L in 1990-2004. The increasing nitrate input has arisen mostly from the mid and lower reaches of the Changjiang River, where the river meets one of the most strongly developed agriculture areas in China. Responses of the coastal phytoplankton community to the increasing nutrient inputs are also seen in the available monitoring data. First, a trend of increasing phytoplankton standing stock from 1984 to 2002 appeared in the Changjiang River estuary and adjacent coastal waters, especially in late spring. Secondly, the proportion of diatoms in the whole phytoplankton community showed a decreasing trend from about 85% in 1984 to about 60% in 2000. Finally, red tides/harmful algal blooms increased dramatically in this area in terms of both number and scale. About 30-80 red tide events were recorded each year from 2000 to 2005 in the East China Sea. The scale of some blooms has been in excess of 10,000 km(2). (c) 2008 Elsevier Ltd. All rights reserved.
KeywordChangjiang River Estuary Nutrient Phytoplankton Community Red Tide
Subject AreaOceanography
DOI10.1016/j.csr.2007.02.009
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Indexed ByISTP ; SCI
Language英语
WOS IDWOS:000257620200010
Citation statistics
Cited Times:250[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/5408
Collection海洋生态与环境科学重点实验室
AffiliationChinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhou, Ming-jiang,Shen, Zhi-liang,Yu, Ren-cheng. Responses of a coastal phytoplankton community to increased nutrient input from the Changjiang (Yangtze) River[J]. CONTINENTAL SHELF RESEARCH,2008,28(12):1483-1489.
APA Zhou, Ming-jiang,Shen, Zhi-liang,&Yu, Ren-cheng.(2008).Responses of a coastal phytoplankton community to increased nutrient input from the Changjiang (Yangtze) River.CONTINENTAL SHELF RESEARCH,28(12),1483-1489.
MLA Zhou, Ming-jiang,et al."Responses of a coastal phytoplankton community to increased nutrient input from the Changjiang (Yangtze) River".CONTINENTAL SHELF RESEARCH 28.12(2008):1483-1489.
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