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源解决的PAH与微生物多样性和社区结构在多重压力沿海系统中的联系,萨罗尼科斯湾,希腊 (地中海东部)

Ester Skylaki¹, Alexandra Zachariadou², Savvas Genitsaris²

¹Institute of Oceanography, Hellenic Centre for Marine Research (HCMR), 46.7 km Athens-Sounion Av., 19013, Anavyssos, Greece; Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, 71003, Heraklion, Greece.

Marine pollution bulletin

|March 12, 2026

概括

这项研究将多环芳 (PAH) 的来源与希腊萨罗尼科斯湾的微生物群落联系起来. 沉积物显示出更强的联系,确定了潜在的细菌生物指标,用于沿海监测.

科学领域:

环境化学环境化学
海洋微生物学海洋微生物学
生态毒理学生态毒理学

背景情况:

多环芳 (PAH) 是沿海地区发现的持久性有机污染物.
人类造成的压力因素有助于海洋环境中复杂的PAH混合物.
了解PAH来源及其对微生物生态系统的影响对于环境管理至关重要.

研究的目的:

研究PAH来源与多重压力海湾中的细菌群体结构之间的关系.
为了确定监测PAH污染的潜在微生物生物指标.
提供有关PAHs在不同海洋区域的命运和影响的见解.

主要方法:

从萨罗尼科斯湾的五个站点采集海水 (溶解和颗粒阶段) 和沉积物的样本.
使用气体染色学-质谱学分析47种PAH同类物.
使用EPA的正矩阵因子化模型来分配PAH的来源.
通过16S rRNA基因metabarcoding进行细菌社区组成分析.

主要成果:

PAH的度在各个隔间有显著的变化,溶解阶段由化2环和3环PAH主导,沉积物由高MW的4环到7环化合物主导.
海水和沉积物之间的细菌群落不同,与海水中的物理化学梯度和沉积物中的PAH配置文件相关.
特定的细菌种群 (例如,Flavobacterium,Parahaliea maris) 被确定为与PAH来源相关的潜在分区特定生物指标.

结论:

沉积物中的细菌群体与海水相比,与PAH来源的联系更强.
源解决的PAH配置文件可以与特定的细菌组合联系起来,为生物适应性提供了潜在的可能性.
分区特定的微生物种群表现出有希望的指标,用于监测受污染的沿海地区的复杂PAH混合物.

关键词:

细菌和浮游生物中的细菌.生物降解生物降解生态毒理学生态毒理学高吞吐量测序的测序方法多环芳香碳化合物多环芳香碳化合物积极矩阵因数分解模型的模型.

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