| 春季长江口富营养化水域浮游植物群集对冲淡水和上升流的响应 |
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| 引用本文： | 宋书群,李照,李才文,俞志明.春季长江口富营养化水域浮游植物群集对冲淡水和上升流的响应[J].海洋学报(英文版),2017,36(12):101-110. |
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| 作者姓名： | 宋书群 李照 李才文 俞志明 |
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| 作者单位： | 中国科学院海洋研究所 中国科学院海洋生态与环境科学重点实验室, 山东 青岛 266071;青岛海洋科学与技术国家实验室 海洋生态与环境科学功能实验室, 山东 青岛 266200,中国科学院海洋研究所 中国科学院海洋生态与环境科学重点实验室, 山东 青岛 266071;青岛海洋科学与技术国家实验室 海洋生态与环境科学功能实验室, 山东 青岛 266200,中国科学院海洋研究所 中国科学院海洋生态与环境科学重点实验室, 山东 青岛 266071;青岛海洋科学与技术国家实验室 海洋生态与环境科学功能实验室, 山东 青岛 266200,中国科学院海洋研究所 中国科学院海洋生态与环境科学重点实验室, 山东 青岛 266071;青岛海洋科学与技术国家实验室 海洋生态与环境科学功能实验室, 山东 青岛 266200 |
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| 基金项目： | The National Natural Science Foundation of China-Shandong Joint Fund for Marine Science Research Centers under contract No. U1606404; the Youth Project of Natural Science Foundation of Shandong Province under contract No. ZR2014DQ029; the Youth Project of National Natural Science Foundation of China under contract No. 41606128; the Scientific and Technological Innovation Project of Qingdao National Laboratory for Marine Science and Technology under contract Nos 2016ASKJ02 and 2015ASKJ02; the Aoshan Talents Program of Qingdao National Laboratory for Marine Science and Technology under contract No. 2015ASTP. |
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| 摘 要： | A comprehensive study on the phytoplankton standing stocks, species composition and dominant species in the eutrophic Changjiang(Yangtze River) Estuary(CE) was conducted to reveal the response of phytoplankton assemblage to Changjiang Diluted Water(CDW) and upwelling in the spring. Phytoplankton presented peak standing stocks(13.03 μg/L of chlorophyll a, 984.5×103 cells/L of phytoplankton abundance) along the surface isohaline of 25. Sixty-six species in 41 genera of Bacillariophyta and 33 species in 19 genera of Pyrrophyta were identified, as well as 5 species in Chlorophyta and Chrysophyta. Karenia mikimotoi was the most dominant species, followed by Prorocentrum dentatum, Paralia sulcata, Pseudo-nitzschia delicatissima and Skeletonema costatum. A bloom of K. mikimotoi was observed in the stratified stations, where the water was characterized by low nitrate, low phosphate, low turbidity, and specific ranges of temperature(18–22 °C) and salinity(27–32). K.mikimotoi and P. dentatum accumulated densely in the upper layers along the isohaline of 25. S. costatum was distributed in the west of the isohaline of 20. Benthonic P. sulcata presented high abundance near the bottom,while spread upward at upwelling stations. CDW resulted in overt gradients of salinity, turbidity and nutritional condition, determining the spatial distribution of phytoplankton species. The restricted upwelling resulted in the upward transport of P. sulcata and exclusion of S. costatum, K. mikimotoi and P. dentatum. The results suggested that CDW and upwelling were of importance in regulating the structure and distribution of phytoplankton assemblage in the CE and the East China Sea.
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| 关 键 词： | 浮游植物 物种组成 水华 上升流 河口 |
| 收稿时间： | 2016/10/19 0:00:00 |
The response of spring phytoplankton assemblage to diluted water and upwelling in the eutrophic Changjiang (Yangtze River) Estuary |
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| SONG Shuqun,LI Zhao,LI Caiwen and YU Zhiming.The response of spring phytoplankton assemblage to diluted water and upwelling in the eutrophic Changjiang (Yangtze River) Estuary[J].Acta Oceanologica Sinica,2017,36(12):101-110. |
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| Authors: | SONG Shuqun LI Zhao LI Caiwen and YU Zhiming |
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| Institution: | CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China |
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| Abstract: | A comprehensive study on the phytoplankton standing stocks, species composition and dominant species in the eutrophic Changjiang (Yangtze River) Estuary (CE) was conducted to reveal the response of phytoplankton assemblage to Changjiang Diluted Water (CDW) and upwelling in the spring. Phytoplankton presented peak standing stocks (13.03 μg/L of chlorophyll a, 984.5×103 cells/L of phytoplankton abundance) along the surface isohaline of 25. Sixty-six species in 41 genera of Bacillariophyta and 33 species in 19 genera of Pyrrophyta were identified, as well as 5 species in Chlorophyta and Chrysophyta. Karenia mikimotoi was the most dominant species, followed by Prorocentrum dentatum, Paralia sulcata, Pseudo-nitzschia delicatissima and Skeletonema costatum. A bloom of K. mikimotoi was observed in the stratified stations, where the water was characterized by low nitrate, low phosphate, low turbidity, and specific ranges of temperature (18–22 °C) and salinity (27–32). K. mikimotoi and P. dentatum accumulated densely in the upper layers along the isohaline of 25. S. costatum was distributed in the west of the isohaline of 20. Benthonic P. sulcata presented high abundance near the bottom, while spread upward at upwelling stations. CDW resulted in overt gradients of salinity, turbidity and nutritional condition, determining the spatial distribution of phytoplankton species. The restricted upwelling resulted in the upward transport of P. sulcata and exclusion of S. costatum, K. mikimotoi and P. dentatum. The results suggested that CDW and upwelling were of importance in regulating the structure and distribution of phytoplankton assemblage in the CE and the East China Sea. |
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| Keywords: | phytoplankton species composition algal bloom upwelling estuary |
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