| SUN Dong,LIU Zhensheng,ZHANG Jing,WANG Chunsheng,SHAO Qianwen. 2016. Environmental control of mesozooplankton community structure in the Hangzhou Bay, China. Acta Oceanologica Sinica, 35(10):96－106 |
| Environmental control of mesozooplankton community structure in the Hangzhou Bay, China |
| 环境因素对杭州湾中型浮游动物群落结构的控制作用 |
| Received:September 16, 2015 Revised:February 18, 2016 |
| DOI：10.1007/s13131-016-0893-y |
| Key words:zooplankton monsoons dissolved inorganic nitrogen Changjiang River Plume community composition East China Sea |
| 中文关键词: 浮游动物 季风 溶解态无机氮 长江冲淡水 群落结构 东海 |
| 基金项目: |
| Author Name | Affiliation | E-mail | | SUN Dong | Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | | | LIU Zhensheng | Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | zsliu2012@163.com | | ZHANG Jing | Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | | | WANG Chunsheng | Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | | | SHAO Qianwen | Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China | |
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| Abstract: |
| A quarterly study of mesozooplankton community structure and environmental variables in the Hangzhou Bay was conducted to examine the response of mesozooplankton community to the variation of water mass and environmental condition. The southeast coast of China is a typical region under the intensive influence of Asia monsoon and freshwater discharge from rivers. The water mass and environmental condition of the Hangzhou Bay, which were influenced by the interaction of currents, freshwater discharge of the Qiantang River and Changjiang River Plume, showed significant seasonal variation. Our results showed that both biomass and abundance were significantly higher in summer ((247.7±148.8) mg/m3 and (350.9±215.6) ind./m3, respectively) than those in other seasons. Four eco-geographical regions were divided based on the cluster analysis of zooplankton community of the Hangzhou Bay throughout the year, except for winter. Monsoon and the dissolved inorganic nitrogen (DIN) input from freshwater discharge of the Qiantang River and Changjiang River resulted in temporal and spatial variations of environmental gradient in the Hangzhou Bay, which significantly influenced the structure of mesozooplankton community. Redundancy analysis (RDA) indicated that the mesozooplankton community structure was strictly correlated with the DIN gradient, while salinity gradient showed a weak influence in the Hangzhou Bay. |
| 中文摘要: |
| 本研究对杭州湾中型浮游动物群落结构和水环境变化进行了四季调查，旨在探讨杭州湾浮游动物群落对水团结构变化和水环境变化的响应。我国东南沿海是一个同时受亚洲季风和河流径流影响的典型区域。就杭州湾而言，这里的水团结构和水环境特征受海流、钱塘江径流和长江冲淡水等的共同影响而往往呈现出显著的季节变化。本研究的结果表明杭州湾浮游动物生物量和丰度都在夏季呈现全年的峰值，分别为247.7±148.8 mg/m3 和350.9±215.6 ind./m3。对各个季节浮游动物群落结构的聚群分析表明春季、夏季和秋季的杭州湾浮游生态系统都可以被划分为4个生态地理区，但冬季除外。季风、钱塘江径流和长江冲淡水引发的溶解态无机氮输入导致杭州湾的水环境梯度存在显著的时空变化，这又进一步显著影响着中型浮游动物群落结构特征。最后，冗余分析揭示出杭州湾中型浮游动物群落结构受到溶解态无机氮梯度的强烈影响，但盐度梯度对此影响较弱。 |
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