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解读影响植物浮游生物社区结构的环境因素在受污染的城市河流中

Xiaxia Li¹, Kai Chen², Chao Wang³

¹School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, China; Collaborative Innovation Center for Intelligent Regulation and Comprehensive Management of Water Resources, School of Water Conservancy and Hydroelectric, Hebei University of Engineering, Handan 056038, China; Hebei Key Laboratory of Intelligent Water Conservancy, Hebei University of Engineering, Handan 056038, China.

Journal of environmental sciences (China)

|August 2, 2024

概括

图江河流域的浮游生物群落主要受到水平的影响. 环境DNA (eDNA) 元编码为评估水生生物多样性和指导污染控制策略提供了更精确的方法.

科学领域:

水生生态学水生生态学
环境科学环境科学
分子生物学分子生物学

背景情况:

植物浮游生物是水质和水生生态系统中食物营养状况的重要指标.
城市河流面临着影响水生生物的污染挑战,需要有效监测.
图江河流域是长江的一个重要支流,需要对其浮游生物群落进行描述.

研究的目的:

用多种方法调查图江河流域的植物浮游生物社区结构.
确定影响植物浮游生物生长和社区组成的关键环境因素.
为了比较直接显微镜计数与环境DNA (eDNA) metabarcoding对植物浮游生物评估的有效性.

主要方法:

直接显微镜计数植物浮游生物.
环境DNA (eDNA) 的元编码用于植物浮游生物的识别.
蒙特尔分析以将社区结构与环境因素相关联.
结构方程建模以确定限制增长的因素.

主要成果:

在显微和eDNA方法 (Bacillariophyta,Chlorophyta,Cyanophyta与Chlorophyta,Dinophyceae,Bacillariophyta) 之间观察到的主导植物浮游生物类中的差异.
与显微镜相比,eDNA元编码显示出更高的物种多样性检测和精度.
植物浮游生物的生长主要受到的限制,由高与的比率 (>16:1) 表示.

结论:

与的比率是控制图江河流域植物浮游生物生长的主要因素.
电子DNA元编码是详细分析浮游植物群落的卓越工具.
建议包括控制营养物质和污染物排放,管理溶解氧气,改善特定地区的藻类监测和清除策略.

关键词:

环境DNA DNA 环境DNA 微观计数数量微观计数植物浮游生物的生长.结构方程建模结构方程建模图江河流域的河流盆地

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