| LI Li,CEN Jingyi,CUI Lei,LU Songhui. 2019. Response of size-fractionated phytoplankton to environmental factors near the Changjiang Estuary. Acta Oceanologica Sinica, 38(1):151－159 |
| Response of size-fractionated phytoplankton to environmental factors near the Changjiang Estuary |
| 长江口邻近海域浮游植物粒级结构特征及其与环境的响应关系 |
| Received:October 19, 2017 |
| DOI：10.1007/s13131-018-1259-4 |
| Key words:phytoplankton size structure temperature trophic condition seasonal succession Changjiang Estuary |
| 中文关键词: 浮游植物粒级结构 温度 富营养化状况 季节变化 长江口 |
| 基金项目:The National Basic Research Program (973 Program) of China under contract No. 2010CB428702; the Science and Technology Planning Project of Guangdong Province of China under contract No. 2016A030303012; the Strategic Priority Research Program of the Chinese Academy of Sciences under contract No. XDA11020304. |
| Author Name | Affiliation | E-mail | | LI Li | Research Center for Harmful Algae and Marine Biology, Jinan University, Guangzhou 510632, China
Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China | | | CEN Jingyi | Research Center for Harmful Algae and Marine Biology, Jinan University, Guangzhou 510632, China
Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China | | | CUI Lei | Research Center for Harmful Algae and Marine Biology, Jinan University, Guangzhou 510632, China
Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China | | | LU Songhui | Research Center for Harmful Algae and Marine Biology, Jinan University, Guangzhou 510632, China
Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China | lusonghui1963@163.com |
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| Abstract: |
| Size-based partitioning of phytoplankton is a useful tool for monitoring key phytoplankton traits, and it provides a better understanding of phytoplankton dynamics. Our aim is to determine the variation in the different size classes of phytoplankton to the total phytoplankton biomass during the spring and autumn of 2010 and examine the relationship between phytoplankton size structure and environmental variables and zooplankton community structure near the Changjiang Estuary. In the spring, phytoplankton populations were predominantly consisted of nanophytoplankton throughout the study region. In the autumn, picophytoplankton and nanophytoplankton collectively dominated the phytoplankton community. A Pearson correlation analysis highlighted the role of temperature and trophic conditions on the contributions of nanophytoplankton and picophytoplankton. The grazing pressure exerted by mesozooplankton could have played an important role in determining the microphytoplankton community structure. |
| 中文摘要: |
| 浮游植物的分粒级研究是监测浮游植物特征的重要工具，对于深入了解浮游植物动态的作用也不容忽视。本文的研究目的在于揭示长江口邻近海域春秋季不同粒级的浮游植物分布动态，分析浮游植物粒级结构与环境因素以及浮游动物群落结构的关系。通过2010年春季和秋季对粒径分级叶绿素a浓度的现场调查研究发现：春季，浮游植物主要以微型浮游植物占优势；秋季，微微型浮游植物和微型浮游植物共同占优势。相关分析结果表明，温度和富营养化状况是影响微型和微微型浮游植物对总叶绿素a贡献的重要因素。浮游动物的摄食压力可能对小型浮游植物对总叶绿素a的贡献起着重要的作用。 |
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