| Wang Xingzhou,Wei Yuqiu,Wu Chao,Guo Congcong,Sun Jun. 2020. The profound influence of Kuroshio intrusion on microphytoplankton community in the northeastern South China Sea. Acta Oceanologica Sinica, 39(8):79－87 |
| The profound influence of Kuroshio intrusion on microphytoplankton community in the northeastern South China Sea |
| 黑潮入侵对南海东北部浮游植物群落结构的影响 |
| Received:April 02, 2019 |
| DOI：10.1007/s13131-020-1608-y |
| Key words:phytoplankton community Kuroshio South China Sea |
| 中文关键词: 浮游植物 群落结构 黑潮 中国南海 |
| 基金项目:The National Natural Science Foundation of China under contract Nos 41876134, 41676112 and 41276124; the Key Project of Natural Science Foundation for Tianjin under contract No. 17JCZDJC40000; the University Innovation Team Training Program for Tianjin under contract No. TD12-5003; the Tianjin 131 Innovation Team Program under contract No. 20180314; the Changjiang Scholar Program of Chinese Ministry of Education under contract No. T2014253 to Jun Sun. |
| Author Name | Affiliation | E-mail | | Wang Xingzhou | Research Centre for Indian Ocean Ecosystem, Tianjin University of Science and Technology, Tianjin 300457, China
College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China | | | Wei Yuqiu | Research Centre for Indian Ocean Ecosystem, Tianjin University of Science and Technology, Tianjin 300457, China
Institute of Marine Science and Technology, Shandong University, Qingdao 266200, China | | | Wu Chao | Research Centre for Indian Ocean Ecosystem, Tianjin University of Science and Technology, Tianjin 300457, China | | | Guo Congcong | Institute of Marine Science and Technology, Shandong University, Qingdao 266200, China | | | Sun Jun | Research Centre for Indian Ocean Ecosystem, Tianjin University of Science and Technology, Tianjin 300457, China | phytoplankton@163.com |
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| Abstract: |
| To further understand the effect of Kuroshio intrusion on phytoplankton community structure in the northeastern South China Sea (NSCS, 14°–23°N, 114°–124°E), one targeted cruise was carried out from July to August, 2017. A total of 79 genera and 287 species were identified, mainly including Bacillariophyta (129 species), Pyrrophyta (150 species), Cyanophyta (4 species), Chrysophyta (3 species) and Haptophyta (1 species). The average abundance of phytoplankton was 2.14×103 cells/L, and Cyanobacterium was dominant species accounting for 86.84% of total phytoplankton abundance. The abundance and distribution of dominant Cyanobacterium were obviously various along the flow of the Kuroshio, indicating the Cyanobacterium was profoundly influenced by the physical process of the Kuroshio. Therefore, Cyanobacterium could be used to indicate the influence of Kuroshio intrusion. In addition, the key controlling factors of the phytoplankton community were nitrogen, silicate, phosphate and temperature, according to Canonical Correspondence Analysis. However, the variability of these chemical parameters in the study water was similarly induced by the physical process of circulations. Based on the cluster analysis, the similarity of phytoplankton community is surprisingly divided by the regional influence of the Kuroshio intrusion, which indicated Kuroshio intrusion regulates phytoplankton community in the NSCS. |
| 中文摘要: |
| 为了深入了解黑潮入侵对南海东北部浮游植物群落结构的影响(NSCS，14°-23°N，114°-124E)，于2017年7月至8月对该海域进行采样调查。本次调查共鉴定出浮游植物79属287种，主要包括硅藻门（129种），甲藻门(150种)，蓝藻门(4种)，金藻门(3种)和定鞭藻门（1种）。浮游植物平均丰度为2.14×103 cells/L，蓝藻占浮游植物总丰度的86.84%。随黑潮的路径，优势蓝藻的丰度和分布在调查区域存在明显的差异，说明蓝藻受到黑潮物理过程的影响，因此蓝藻可以用来指示的黑潮对南海的入侵。根据典型对应分析，浮游植物群落的关键控制因素为N、P，Si以及温度。然而，这些化学参数在研究海域的特异性仍然是由黑潮入侵这一物理过程引起的。聚类分析的结果也将浮游植物群落结构分为黑潮入侵区与南海区域两个部分，这表明黑潮入侵对南海东北部浮游植物群落结构有着深刻的影响。 |
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