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链状裸甲藻赤潮消亡过程及其与休眠包囊关系的初步研究

李光毅 刘保清 邱勇 黄龙展 陈竞武

李光毅,刘保清,邱勇,等. 链状裸甲藻赤潮消亡过程及其与休眠包囊关系的初步研究[J]. 海洋学报,2022,44(x):1–10 doi: 10.12284/hyxb2022148
引用本文: 李光毅,刘保清,邱勇,等. 链状裸甲藻赤潮消亡过程及其与休眠包囊关系的初步研究[J]. 海洋学报,2022,44(x):1–10 doi: 10.12284/hyxb2022148
Li Guangyi,Liu Baoqing,Qiu Yong, et al. Preliminary study on the extinction of Gymnodinium catenatum bloom and its relationship with resting cysts[J]. Haiyang Xuebao,2022, 44(x):1–10 doi: 10.12284/hyxb2022148
Citation: Li Guangyi,Liu Baoqing,Qiu Yong, et al. Preliminary study on the extinction of Gymnodinium catenatum bloom and its relationship with resting cysts[J]. Haiyang Xuebao,2022, 44(x):1–10 doi: 10.12284/hyxb2022148

链状裸甲藻赤潮消亡过程及其与休眠包囊关系的初步研究

doi: 10.12284/hyxb2022148
基金项目: 福建省自然科学基金(2021J05186);福建省中青年教师教育科研项目(JAT190523);自然资源部海洋生态监测与修复技术重点实验室开放研究基金(MEMRT202104);泉州市科技计划项目(2017Z035)。
详细信息
    作者简介:

    李光毅(1993-),男,福建省厦门市人,助理工程师,主要从事海洋生态环境监测工作。E-mail: 1328663241@qq.com

    通讯作者:

    邱勇(1988-),男,福建省建宁市人,副教授,主要从事海洋生态环境研究。E-mail: qiuyong@qztc.edu.cn

  • 中图分类号: X835

Preliminary study on the extinction of Gymnodinium catenatum bloom and its relationship with resting cysts

  • 摘要: 本文于2018年6月10-14日对在泉州湾海域发生的一次链状裸甲藻(Gymnodinium catenatum)赤潮的消亡过程进行研究。在现场跟踪监测,共设置4个站位,进行6个航次海洋环境及浮游植物的调查。结合本文对泉州湾海域甲藻包囊的调查研究,探索休眠包囊与赤潮生消过程的关系。研究结果显示,赤潮发生时海况良好,水温和盐度分别介于27.0~28.5℃和29.5~31.7之间,活性磷酸盐和无机氮含量分别介于未检出至0.045 4 mg/L和0.050~0.281 mg/L之间,赤潮生物密度与营养盐没有呈现显著的相关关系,大风大浪是导致赤潮消亡的重要原因;赤潮消亡过程中共鉴定浮游植物3门48属100种,硅藻门种类最多;赤潮消亡期间浮游植物群落结构发生变化,前期链状裸甲藻占绝对优势,最高密度达(7.02±0.11)×106 cells/L,后期中肋骨条藻(Skeletonema costatum)和旋链角毛藻(Chaetoceros curvisetus)代替链状裸甲藻成为优势种,且浮游植物种类数明显增加;同时在泉州湾海域共鉴定甲藻包囊5大类37种和1种未定种,平均丰度为574 cysts/g,以异养型甲藻包囊为主;休眠包囊在赤潮生消过程中起着重要作用,赤潮消亡时形成休眠包囊,包囊数量会随着时间呈下降趋势,但仍有萌发的可能,具有重新暴发赤潮的潜在性,需要引起重视。
  • 图  1  监测站位

    Fig.  1  Monitoring Stations

    图  2  链状裸甲藻单细胞(a)及链状群体(b)

    Fig.  2  G. catenatum monoplast (a) and catenoid colony (b)

    图  3  赤潮期间水温和盐度的变化

    Fig.  3  Variations of Temperature and Salinity during red tide

    图  4  赤潮期间pH和DO浓度的变化

    Fig.  4  Variations of pH and DO concentration during red tide

    图  5  赤潮期间活性磷酸盐浓度的变化

    Fig.  5  Variations of DIP concentration during red tide

    图  6  赤潮期间无机氮浓度的变化

    Fig.  6  Variations of DIN concentration during red tide

    图  7  泉州湾海域甲藻包囊种类组成

    Fig.  7  Species composition of dinoflagellate cysts in Quanzhou Bay

    图  8  赤潮期间浮游植物种类数的变化

    Fig.  8  Variations of phytoplankton species during red tide

    图  9  赤潮期间浮游植物类群丰度及其所占比率的变化

    Fig.  9  Variations of phytoplankton group abundance and its proportion during red tide

    图  10  泉州湾海域甲藻包囊种类数和丰度的变化

    Fig.  10  Variations of species number and abundance of dinoflagellate cysts in Quanzhou Bay

    图  11  泉州湾海域链状裸甲藻包囊丰度

    Fig.  11  Variations of abundance of G. catenatum cysts in Quanzhou Bay

    图  12  链状裸甲藻空包囊(c)和活体包囊(d)

    Fig.  12  G. catenatum empty cysts(c)and live cysts(d)

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  • 收稿日期:  2022-02-26
  • 修回日期:  2022-03-20
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