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首页> 外文期刊>Harmful Algae >Diverse harmful microalgal community assemblages in the Johor Strait and the environmental effects on its community dynamics
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Diverse harmful microalgal community assemblages in the Johor Strait and the environmental effects on its community dynamics

机译：柔佛海峡的各种有害微藻群体集会和对其社区动态的环境影响

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摘要

Coastal ecosystems are often subjected to anthropogenic disturbances that lead to water quality deterioration and an increase in harmful algal bloom (HAB) events. Using the next-generation molecular tool of 18S rDNA metabarcoding, we examined the community assemblages of HAB species in the Johor Strait, Malaysia between May 2018 and September 2019, covering 19 stations across the strait. The molecular operational taxonomic units (OTUs) of HAB taxa retrieved from the dataset (n = 194) revealed a much higher number of HAB taxa (26 OTUs) than before, with 12 taxa belong to new records in the strait. As revealed in the findings of this study, the diversity and community structure of HAB taxa varied significantly over time and space. The most common and abundant HAB taxa in the strait (frequency of occurrence 70%) comprised Heterosigma akashiwo, Fibrocapsa japonica, Pseudo-nitzschia pungens, Dinophysis spp., Gymnodinium catenatum, Alexandrium leei, and A. tamiyavanichii. Also, our results demonstrated that the HAB community assemblages in the strait were dependent on the interplay of environmental variables that influence by the monsoonal effects. Different HAB taxa, constitute various functional types, occupied and prevailed in different environmental niches across space and time, leading to diverse community assemblages and population density. This study adds to the current understandings of HAB dynamics and provides a robust overview of temporal-spatial changes in HAB community assemblages along the environmental gradients in a tropical eutrophic coastal ecosystem.
机译：沿海生态系统经常受到人为干扰，导致水质恶化和有害藻类盛开（HAB）事件的增加。使用18秒的下一代分子工具18s RDNA成立，我们研究了2018年5月至2019年5月至2019年9月在2019年5月至2019年9月之间的柔佛州柔佛海峡的社区组合，涵盖了两岸的19个站点。从数据集中检索的HAB分类群的分子运作分类单位（OTU）（n = 194）显示出比以前更高的HAM征集（26个OTU），其中12个分类群属于海峡的新记录。正如本研究结果所揭示的那样，HAB类别的多样性和社区结构随着时间和空间而变化显着变化。海峡中最常见和丰富的HAB征集（出现频率＆ 70％）包括异源性Akashiwo，Fibrocapsa japonica，pseudo-nitzschia pungens，Dinophysin spp。，gymnodinium catenatum，alexandrium leei和A. tamiyavanichii。此外，我们的结果表明海峡的HAB社区集会依赖于影响季风影响的环境变量的相互作用。不同的HAB分类群，构成各种功能类型，占据各种环境，在不同的环境利基中占据了空间和时间，导致各种社区组合和人口密度。本研究增加了当前对HAM动态的理解，并提供了一种沿着热带Euterophic沿海生态系统的环境梯度沿着环境梯度的HAB社区组合的时间空间变化的强大概述。

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  • 来源
    《Harmful Algae》 |2021年第7期|102077.1-102077.14|共14页
  • 作者

    Hii Kieng Soon; Mohd-Din Monaliza; Luo Zhaohe; Tan Suh Nih; Lim Zhen Fei; Lee Li Keat; Leong Sandric Chee Yew; Teng Sing Tung; Gu Haifeng; Cao Xiuyun; Lim Po Teen; Leaw Chui Pin;

  • 作者单位

    Univ Malaya Inst Ocean & Earth Sci Bachok Marine Res Stn Bachok 16310 Kelantan Malaysia;

    Univ Malaya Inst Ocean & Earth Sci Bachok Marine Res Stn Bachok 16310 Kelantan Malaysia|Univ Teknol Malaysia Fac Sci Dept Biosci Skudai 81310 Johor Malaysia;

    Minist Nat Resources Inst Oceanog 3 Xiamen 361005 Peoples R China;

    Univ Malaya Inst Ocean & Earth Sci Bachok Marine Res Stn Bachok 16310 Kelantan Malaysia|Xiamen Univ Malaysia China ASEAN Coll Marine Sci Sepang 43900 Selangor Malaysia;

    Univ Malaya Inst Ocean & Earth Sci Bachok Marine Res Stn Bachok 16310 Kelantan Malaysia;

    Univ Malaya Inst Ocean & Earth Sci Bachok Marine Res Stn Bachok 16310 Kelantan Malaysia;

    Natl Univ Singapore Trop Marine Sci Inst 18 Kent Ridge Rd S2S Bldg Singapore 119227 Singapore;

    Univ Malaysia Sarawak Fac Resource Sci & Technol Kota Samarahan 94300 Sarawak Malaysia;

    Minist Nat Resources Inst Oceanog 3 Xiamen 361005 Peoples R China;

    Chinese Acad Sci Inst Hydrobiol Wuhan Peoples R China;

    Univ Malaya Inst Ocean & Earth Sci Bachok Marine Res Stn Bachok 16310 Kelantan Malaysia;

    Univ Malaya Inst Ocean & Earth Sci Bachok Marine Res Stn Bachok 16310 Kelantan Malaysia;

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  • 正文语种 eng
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  • 关键词

    Diatom; Dinoflagellate; Environmental DNA; HAB taxa; Haptophyte; Raphidophyte; Seasonality;

    机译：硅藻;Dinoflagellate;环境DNA;HAB征集;触觉;Raphidophyte;季节性;

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