消费者通过在非生物压力下破坏地下社区的稳定来稳定草原生态系统功能
Jane M Lucas1, Michelle L Budny2, Nathan P Lemoine2,3
1Cary Institute of Ecosystem Studies, Millbrook, New York, USA.
Ecology
|November 26, 2025
概括
昆虫消费者在干旱期间稳定了草原土壤的功能,如细菌生物质和微生物活动. 这种稳定性源于微生物群落变异性增加,突出消费者.
科学领域:
- 生态生态学 生态生态学
- 土壤科学 土壤科学
- 微生物生态学 微生物生态学
背景情况:
- 消费者对于生态系统对环境压力的反应至关重要,但它们在地下过程中的作用尚未得到充分研究.
- 昆虫消费者显著影响草原生态系统的功能和稳定性,特别是在对干旱等非生物压力因素的反应中.
研究的目的:
- 调查小体消费者如何影响草原地下功能在不同非生物压力下稳定的稳定性.
- 了解消费者影响微生物群落和生态系统稳定的机制.
主要方法:
- 一个完全因数实验的实地实验操纵了消费者的存在,并在一个生长季节内引发干旱.
- 测量包括细菌生物质,微生物活动以及土壤细菌和真菌社区的组成和丰富度.
主要成果:
- 消费者的存在稳定了细菌生物质和微生物活动,在波动的土壤湿度条件下.
- 生态系统的稳定性被消费者驱动的微生物群落的不稳定性所增强,由组成和丰度的变化增加而证明.
- 消费者改变了土壤细菌群落 (组成,丰富性),但对真菌群落的影响很小.
结论:
- 消费者在维护草原地下生态系统的稳定性方面发挥着至关重要的作用,尤其是在干旱期间.
- 社区的反应能力和快速适应能力是生态系统稳定的关键方面.
- 在预测草原生态系统对全球变化的反应时,必须考虑食用相互作用.
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