| 黄海冷水团海域浮游植物磷胁迫的季节变动 |
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| 作者姓名： | Wang Dan Huang Bangqin Liu Xin Liu Guimei Wang Hui |
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| 作者单位： | 国家海洋环境预报中心国家海洋局海洋灾害预报技术研究重点实验室, 北京 100081, 中国;厦门大学滨海湿地生态系统教育部重点实验室, 福建省海陆界面生态环境重点实验室, 福建, 厦门 361005, 中国;厦门大学滨海湿地生态系统教育部重点实验室, 福建省海陆界面生态环境重点实验室, 福建, 厦门 361005, 中国;厦门大学滨海湿地生态系统教育部重点实验室, 福建省海陆界面生态环境重点实验室, 福建, 厦门 361005, 中国;国家海洋环境预报中心国家海洋局海洋灾害预报技术研究重点实验室, 北京 100081, 中国;国家海洋环境预报中心国家海洋局海洋灾害预报技术研究重点实验室, 北京 100081, 中国 |
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| 基金项目： | The National Natural Science Foundation of China under contract Nos 41206106 and 41222038; the National Basic Research Program of China under contract No. 2006CB400604; the National High Technology Research and Development Program under contract No. 2007AA092003-01; Cooperation on the Development of Basic Technologies for the Yellow Sea and East China Sea Operational Oceanographic System (YOOS). |
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| 摘 要： | The Yellow Sea is located between the China Mainland and the Korean Peninsula, representing a typical shallow epicontinental sea. The Yellow Sea Cold Water Mass（YSCWM） is one of the most important physical features in the Yellow Sea. The characteristics of vertical profiles and seasonal variations of biogenic elements in the YSCWM may lead the variations of nutrient availability（e.g., phosphorus） and phosphorus stress of phytoplankton. In this study, the authors surveyed the seasonal variations of phytoplankton phosphorus stress with emphasis on the effect of the YSCWM during the four cruises in April and October 2006, March and August 2007. Using both bulk and single-cell alkaline phosphatase activity（APA） assays, this study evaluated phosphorus status of phytoplankton community, succession of phytoplankton community and ecophysiological responses of phytoplankton to phosphorus in the typical region of the YSCWM. With the occurrence of the YSCWM, especially the variations of concentration of dissolved inorganic phosphorus（DIP）, the results of bulk APA appeared corresponding seasonal variations. Along Transects A and B, the mean APA in August was the highest, and that in March was the lowest. According to the ELF-labeled assay＇s results, seasonal variations of the ELF-labeled percentages within dominant species indicated that diatoms were dominant in March, April and October, while dinoflagellates were dominant in August. During the four cruises, the ELF-labeled percentages of diatoms except Paralia sulcata showed that diatoms were not phosphorus deficient in April 2006 at all, but suffered from severe phosphorus stress in August 2007. In comparison, the ELF-labeled percentages of dinoflagellates were all above 50% during the four time series, which meant dinoflagellates such as Alexandrium and Scrippsiella, sustained perennial phosphorus stress.
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| 关 键 词： | 浮游植物群落 季节变化特征 黄海冷水团 低磷胁迫 碱性磷酸酶活性 季节性变化 生理生态响应 养分有效性 |
| 收稿时间： | 2013/8/19 0:00:00 |
| 修稿时间： | 2014/5/16 0:00:00 |
Seasonal variations of phytoplankton phosphorus stress in the Yellow Sea Cold Water Mass |
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| Wang Dan,Huang Bangqin,Liu Xin,Liu Guimei,Wang Hui.Seasonal variations of phytoplankton phosphorus stress in the Yellow Sea Cold Water Mass[J].Acta Oceanologica Sinica,2014,33(10):124-135. |
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| Authors: | Wang Dan Huang Bangqin Liu Xin Liu Guimei and Wang Hui |
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| Institution: | 1. Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, State 0ceanic Administration, Beijing 100081, China
2. Key Laboratory of Coastal and Wetland Ecosystems, Ministry of Education/Fujian Provincial Key Laboratory of Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361005, China |
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| Abstract: | The Yellow Sea is located between the China Mainland and the Korean Peninsula, representing a typical shallow epicontinental sea. The Yellow Sea Cold Water Mass(YSCWM) is one of the most important physical features in the Yellow Sea. The characteristics of vertical profiles and seasonal variations of biogenic elements in the YSCWM may lead the variations of nutrient availability(e.g., phosphorus) and phosphorus stress of phytoplankton. In this study, the authors surveyed the seasonal variations of phytoplankton phosphorus stress with emphasis on the effect of the YSCWM during the four cruises in April and October 2006, March and August 2007. Using both bulk and single-cell alkaline phosphatase activity(APA) assays, this study evaluated phosphorus status of phytoplankton community, succession of phytoplankton community and ecophysiological responses of phytoplankton to phosphorus in the typical region of the YSCWM. With the occurrence of the YSCWM, especially the variations of concentration of dissolved inorganic phosphorus(DIP), the results of bulk APA appeared corresponding seasonal variations. Along Transects A and B, the mean APA in August was the highest, and that in March was the lowest. According to the ELF-labeled assay's results, seasonal variations of the ELF-labeled percentages within dominant species indicated that diatoms were dominant in March, April and October, while dinoflagellates were dominant in August. During the four cruises, the ELF-labeled percentages of diatoms except Paralia sulcata showed that diatoms were not phosphorus deficient in April 2006 at all, but suffered from severe phosphorus stress in August 2007. In comparison, the ELF-labeled percentages of dinoflagellates were all above 50% during the four time series, which meant dinoflagellates such as Alexandrium and Scrippsiella, sustained perennial phosphorus stress. |
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| Keywords: | alkaline phosphatase phosphorus stress phytoplankton Yellow Sea Cold Water Mass Yellow Sea |
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