Environmental control of mesozooplankton community structure in the Hangzhou Bay, China

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• 作者：Dong Sun ; Zhensheng Liu ; Jing Zhang ; Chunsheng Wang…
• 关键词：Key wordszooplankton ; monsoons ; dissolved inorganic nitrogen ; Changjiang River Plume ; community composition ; East China Sea
• 刊名：Acta Oceanologica Sinica
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：35
• 期：10
• 页码：96-106
• 全文大小：1,230 KB
• 刊物主题：Oceanography; Climatology; Ecology; Engineering Fluid Dynamics; Marine & Freshwater Sciences; Environmental Chemistry;
• 出版者：Springer Berlin Heidelberg
• ISSN：1869-1099
• 卷排序：35

文摘

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.