Phytoplankton community dynamics during Alexandrium blooms in 2019 off the Qinhuangdao coast, Bohai Sea, China
文献类型： 外文期刊
作者： Xie, Yixuan 1 ; Ding, Renye 1 ; Zha, Daojun 1 ; Li, Yu 1 ; Yan, Guowang 1 ; Zhang, Yaya 1 ; Wu, Haiyan 3 ; Zheng, Guanchao 3 ; Tan, Zhijun 3 ; Jiang, Tao 2 ;
作者机构： 1.Jiangsu Ocean Univ, Sch Marine Technol & Geomaties, Lianyungang 222005, Peoples R China
2.Yantai Univ, Sch Ocean, Yantai 264005, Peoples R China
3.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Testing & Evaluat Aquat Prod Safety & Qua, Minist Agr & Rural Affairs, Qingdao 266071, Peoples R China
关键词： Alexandrium bloom; phytoplankton population; environmental factor; high-performance chromatography (HPLC)-CHEMTAX; phytoplankton pigment; Qinhuangdao
期刊名称：JOURNAL OF OCEANOLOGY AND LIMNOLOGY （ 影响因子：1.554； 五年影响因子：1.448 ）
ISSN： 2096-5508
年卷期：
页码：
收录情况： SCI
摘要： Alexandrium blooms in the northwest area of the Bohai Sea (Qinhuangdao coastal area), China, produce large amounts of toxins that could be enriched in shellfish and consequently harm human bodies. To understand the succession of the phytoplankton community structure during Alexandrium bloom events in the northwest area of the Bohai Sea off Qinhuangdao from April 2 to May 7, 2019, microscopy observations and high-performance chromatography (HPLC)-pigment analysis were performed. Sixty species of phytoplankton were identified, mainly diatoms and dinoflagellates. The abundance of Alexandrium reached the maximum on April 16 (3.3x10(3) cells/L). HPLC-pigment CHEMTAX analysis showed that the phytoplankton community was composed mainly of diatoms, dinoflagellates, prasinophytes, and cryptophytes. Diatoms were the main contributor to the total Chl-a pool. There was a downward trend for the proportion of diatom biomass to the total Chl-a pool, followed by an upward trend. The proportion of dinoflagellate biomass showed the opposite trend, whereas that of the prasinophyte biomass presented an obvious increasing trend. Temperature, nutrients, and nutrient structures were the main factors on the distribution of different phytoplankton groups in the study area as shown in the redundancy analysis. This work illustrates the succession of phytoplankton community structures during Alexandrium blooms and provided a theoretical basis for studies on the mechanism underlying the outbreak of harmful algal blooms in sea areas.
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