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生物多样性丧失对淡水生态系统功能的影响随着压力因素的增加而增加

Ralf B Schäfer^1,2, Daria Baikova³, Helena S Bayat^1,2

¹Department of Ecotoxicology and Centre for Water and Environmental Research, Faculty of Biology, University of Duisburg-Essen, Essen, Germany.

Global change biology

|November 26, 2025

概括

多种压力因素加剧了淡水生物多样性丧失对生态系统功能的影响. 这一元分析表明,增加的压力因素放大了生物多样性丧失的影响,微生物功能受到影响最大.

科学领域:

生态生态学生态生态学
环境科学环境科学
淡水生物学淡水生物学

背景情况:

人类造成的压力因素造成了显著的生物多样性丧失,并改变了生态系统的功能.
淡水生态系统对全球生物多样性和生物地化学循环至关重要,但受到严重威胁.
多重,同时发生的压力因素对生物多样性-生态系统功能 (BEF) 关系的影响尚未得到充分理解.

研究的目的:

研究多种压力因素如何调节淡水系统中分类丰富性和生态系统功能之间的关系.
使用元分析方法评估压力因素对BEF关系的综合影响.
为了确定压力因素类型,生态系统功能或分类群体是否影响在多个压力因素下BEF关系.

主要方法:

对现有关于淡水生态系统的研究进行了元分析.
评估了多重压力因素对分类丰富和四个关键生态系统功能之间的关系的影响.
分析了与单个压力因素相比,多重压力因素对分类丰富性和生态系统功能的影响如何.

主要成果:

总体而言,BEF关系是积极的,更的斜率表明随着压力因素的增加,生物多样性丧失的影响加剧.
多重压力因素的影响在很大程度上可以从单个压力因素的影响中预测,但对生态系统功能的对抗性影响发生在14%的病例中.
微生物生产和生物质在应对压力因素方面出现了最强的下降,压力因素类型,生态系统功能或分类组对BEF关系没有显著的影响.

结论:

在多方面的环境变化下,淡水生物多样性丧失的功能后果比以前假设的要严重得多.
多种压力因素放大了生物多样性丧失对生态系统功能,特别是微生物群落的负面影响.
了解这些复杂的相互作用对于有效的淡水生态系统管理和保护至关重要.

关键词:

社区社区社区社区生态系统过程是生态系统的过程.环境驱动因素环境驱动因素全球变化全球变化叶子分解叶子分解子的细分情况多重的压力因素是多重的压力.生产力生产力生产率的提高.河流是河流,河流是河流.

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