土壤微生物遗产和干旱在非本土社区中介于多样性-侵入性关系
Jiahui Yi1,2, Zhibin Tao1,3,4, Kaoping Zhang1,3,4
1Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China.
The New phytologist
|February 9, 2025
概括
非本地物种的多样性可以通过改变土壤微生物来增加入侵成功,但只能在受水的环境中. 干旱压力抵消了这种效应,影响了未来非本地物种的积累.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 侵入性物种 生物学 生物学
背景情况:
- 高的本地物种多样性通常会抑制非本地入侵.
- 然而,许多生态系统现在都有各种各样的非本地物种组合,这引发了关于入侵动态的问题.
- 非本地物种多样性对后续入侵和环境影响的影响仍然不太清楚.
研究的目的:
- 研究非本地物种多样性如何影响土壤的入侵性.
- 确定环境条件,特别是灌制度在调解这些多样性-侵入性关系中的作用.
- 探索潜在的机制,如土壤微生物群落,驱动这些相互作用.
主要方法:
- 一个植物-土壤反实验被设计成一个调节阶段和一个响应阶段.
- 土壤在三个多样性级别 (1,2,或4个物种) 的非本地物种条件下.
- 在响应阶段,六种非本地物种被单独种植在条件化的土壤中,在水分良好和干旱条件下.
主要成果:
- 在灌良好的条件下,随着土壤条件的物种多样性增加,非本土生物量增加.
- 非本土多样性和生物质之间的这种积极关系与土壤中状菌根真菌丰富度的增加有关.
- 在干旱条件下,非本地生物质独立于土壤注射剂中最初的非本地物种多样性.
结论:
- 土壤微生物遗产,特别是树枝状菌根真菌丰富,是非土著社区积极多样性-入侵性关系的关键驱动力.
- 干旱压力可能会破坏这些关系,消除以前非原生物种多样性的促进作用.
- 这些发现解释了多种非本地物种的同时出现,并预测了在良性环境中加速的非本地物种积累,但不是在压力环境中.
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