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浮游生物群体结构对长江河口的营养梯度和环境驱动因素的值反应

Jiayu Peng¹, Zhenglei Wang², Chen Cheng³

¹Key Laboratory of Estuarine and Coastal Environment, Ministry of Ecology and Environment, Chinese Research Academy of Environment Sciences, Beijing, 100012, PR China.

Marine pollution bulletin

|November 14, 2025

概括

植物浮游生物的多样性在长江河口增加,但动物浮游生物的群体由于高化而下降. 营养水平和盐度强烈影响这些浮游生物的动态,揭示了生态系统管理的关键值.

科学领域:

海洋生态海洋生态学
河口科学河口科学
欧洲化研究研究欧洲化研究

背景情况:

长江的营养投入推动了河口缩,威胁到沿海生态系统.
植物浮游生物和动物浮游生物是水生生态系统健康的关键指标.

研究的目的:

调查长江河口 (2011-2022) 浮游生物群落的十年空间时间动态.
分析浮游生物对环境变化和营养投入的反应.
确定关键的营养值,以管理化.

主要方法:

植物浮游生物和动物浮游生物社区组成和丰度的十年分析.
营养度分析 (DIN,PO4-P,SiO4-Si) 和N:P比率计算.
统计分析包括法典对应分析和值指标税率分析 (TITAN).

主要成果:

植物浮游生物尽管细胞密度降低,但物种丰富度增加;动物浮游生物的丰富度和生物量减少.
持续的限制是由N:P比率超过Redfield比率表示的.
外部河口地区支持更高的生物多样性和生物量,具有明显的生态梯度.
浮游生物组合与溶解的无机,酸盐,酸盐和盐度有很强的相关性.
泰坦号确定了DIN,PO4-P和SiO3-Si的关键生态值.

结论:

长江河口的浮游生物社区结构受到营养水平和盐度的重大影响.
已确定的营养值为基于证据的环保化管理提供了关键数据.
这些发现为大型河口的可持续沿海生态系统治理提供了机制性见解.

关键词:

社区结构社区结构环境因素环境因素这种植物是浮游生物.响应关系响应关系长江河口的长江河口.

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