Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, P.R. China; University of Chinese Academy of Sciences, Beijing 100049, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, P.R. China; Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China.
Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, P.R. China.
Mar Pollut Bull. 2020 Nov;160:111609. doi: 10.1016/j.marpolbul.2020.111609. Epub 2020 Sep 2.
Red tide has always been an environmental issue with global concern. A Noctiluca scintillans red tide and a Mesodinium red tide occurred successively in Yantai nearshore, China, where is usually oligotrophic, in October 2019. Currents, phytoplankton community composition and nutrients were analyzed to access the driving factors of the red tides. The maximum N. scintillans and Mesodiniium abundance reached 124.92 ± 236.84 × 10 cells/L and 1157.52 ± 1294.16 × 10 cells/L respectively. The fast growth of N. scintillans was due to increasing abundance of phytoplankton. The currents were crucial to the assembly and dispersal of red tides. The red tides significantly redistributed the nutrients in the red tide patches and regulated the dominant species in phytoplankton community. Our study illuminates the influence of physical-biochemical coupling processes on red tides, and suggests that ocean dynamics such as currents and tidal factors deserve more attention when considering the ecosystem health problems of coastal zones.
赤潮一直是具有全球关注的环境问题。2019 年 10 月，在中国通常寡营养的烟台近岸海域相继发生夜光藻赤潮和中肋骨条藻赤潮。分析了水流、浮游植物群落组成和营养盐，以探讨赤潮的驱动因素。夜光藻和中肋骨条藻的最大丰度分别达到 124.92±236.84×10 个细胞/L 和 1157.52±1294.16×10 个细胞/L。夜光藻的快速生长归因于浮游植物丰度的增加。水流对赤潮的聚集和扩散至关重要。赤潮显著改变了赤潮斑块中的营养盐分布，并调节了浮游植物群落中的优势种。本研究阐明了物理-生化耦合过程对赤潮的影响，表明在考虑沿海地区生态系统健康问题时，应更加关注海洋动力学，如水流和潮汐因素。
