黄河三角洲海岸带底栖有孔虫群:环境意义和微生物多样性特征

IF 2.1 3区 地球科学 Q2 OCEANOGRAPHY
Shuyang Huang , Qing Li , Xiaohua Qiu , Hong You , Ruimin Lv , Wei Liu , Qingfeng Chen , Tiantian Wang , Jing Zhang , Junjian Ma , Zihao Wang , Shigang Ding
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引用次数: 0

摘要

被称为底栖有孔虫的单细胞真核生物具有复杂的生存机制和生态环境指标。本研究在黄河三角洲沿海地区采集了 10 个地表样本,分析有孔虫的分布与环境因素的关系,并研究其微生物多样性。我们考察了每个采样点的环境理化指标(如 pH、TN、TOC、EC、δ13C、δ15N、PAHs 等),并采用 16S rRNA 高通量测序分析方法研究了微生物群落与有孔虫物种之间的相互作用。研究结果表明,黄河三角洲底栖有孔虫的优势种类为Quinqueloculina complanata、Amonia beccarii和Amonia aomoriensis,TOC和TN是决定底栖有孔虫群落分布的重要因素。多环芳烃在沿岸带的富集对微生物群落和底栖有孔虫的影响尚不明显。沉积物有机碳和氮同位素分析表明,海洋浮游生物可能是研究区沿岸带沉积物中有机 物的主要来源。这意味着有孔虫具有一定的环境指标,特别是结合底栖有孔虫群的分布特征及其与环境参数的密切联系。研究结果表明,Q. complanata分布于受黄河水影响的河口海岸带;A. aomoriensis受沉积物有机质含量的影响较大,反映了河口和近岸环境;Ammonia beccarii-Ammonia aomoriensis-Elphidium excavatum组合表明了半开阔的潮间带浅海环境。此外,底栖有孔虫显示出与微生物的反应性关联,表明微生物多样性可能是底栖有孔虫适应环境变化能力的驱动力之一。这项研究的发现将为研究海岸带生态系统对环境的重要性以及了解底栖有孔虫群落如何生存开辟新的途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Benthic foraminiferal assemblages in the coastal zone of the yellow river delta: Environmental significance and characteristics of microbial diversity

Unicellular eukaryotes known as benthic foraminifera have sophisticated survival mechanisms and ecological environmental indicators. Ten surface samples from the Yellow River Delta's coastal region were taken for this study to analyze the distribution of foraminifera in relation to environmental factors and to examine their microbial diversity. We looked at the physicochemical aspects of the environment at each sampling site (such as pH, TN, TOC, EC, δ13C, δ15N, PAHs, etc.), and we employed 16S rRNA high-throughput sequencing analysis to look into the interactions between microbial communities and foraminiferal species. The findings demonstrated that the Yellow River Delta's advantage benthic foraminiferal species were Quinqueloculina complanata, Ammonia beccarii, and Ammonia aomoriensis, and that TOC and TN were significant determinants of the distribution of benthic foraminiferal communities. PAH enrichment in the coastal zone effects on microbial communities and benthic foraminifera are not yet readily apparent. Sediment organic carbon and nitrogen isotope analysis revealed that marine plankton may be the dominant source of organic matter in the coastal zone sediments in the research area, which was made up of both land-based and marine organic matter. It implies that foraminifera have some environmental indicators, especially when combined with the distributional traits of the benthic foraminiferal assemblages and their considerable association with environmental parameters. The findings revealed that Q. complanata was found in the Yellow River water-affected estuarine coastal zone, A. aomoriensis was significantly influenced by sediment organic matter content and reflected the estuarine and nearshore environments and the combination of Ammonia beccarii-Ammonia aomoriensis-Elphidium excavatum assemblage indicated a semi-open intertidal shallow marine environment. Additionally, benthic foraminifera showed a responsive association with microorganisms, indicating that microbial diversity may be one of the driving forces behind benthic foraminifera's ability to adjust to environmental changes. The findings of this study will open up new avenues for research into the environmental importance of coastal zone ecosystems and for understanding how benthic foraminiferal communities survive.

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来源期刊
Continental Shelf Research
Continental Shelf Research 地学-海洋学
CiteScore
4.30
自引率
4.30%
发文量
136
审稿时长
6.1 months
期刊介绍: Continental Shelf Research publishes articles dealing with the biological, chemical, geological and physical oceanography of the shallow marine environment, from coastal and estuarine waters out to the shelf break. The continental shelf is a critical environment within the land-ocean continuum, and many processes, functions and problems in the continental shelf are driven by terrestrial inputs transported through the rivers and estuaries to the coastal and continental shelf areas. Manuscripts that deal with these topics must make a clear link to the continental shelf. Examples of research areas include: Physical sedimentology and geomorphology Geochemistry of the coastal ocean (inorganic and organic) Marine environment and anthropogenic effects Interaction of physical dynamics with natural and manmade shoreline features Benthic, phytoplankton and zooplankton ecology Coastal water and sediment quality, and ecosystem health Benthic-pelagic coupling (physical and biogeochemical) Interactions between physical dynamics (waves, currents, mixing, etc.) and biogeochemical cycles Estuarine, coastal and shelf sea modelling and process studies.
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