生物相互作用 形状 土壤 细菌 贝塔 多样性 在入侵期间沿着高度梯度的模式
Yuchao Wang1,2,3,4, Wenyan Xue1,2, Jinlin Lyu1,2
1Xi'an Botanical Garden of Shaanxi Province (Institute of Botany of Shaanxi Province), Xi'an 710061, China.
Microorganisms
|October 26, 2024
概括
植物入侵改变了山林中的土壤细菌群落. 种类的相互依赖,而不是利基划分,推动了沿海拔梯度的这些变化,影响了整体的生物多样性.
科学领域:
- 生态生态学 生态生态学
- 微生物学 微生物学
- 植物科学 植物科学
背景情况:
- 侵袭性植物威胁到山林底层的本地物种.
- 土壤微生物可能驱动植物入侵,但入侵机制尚不清楚.
- 了解微生物社区在高度梯度沿着入侵期间的变化至关重要.
研究的目的:
- 为了比较土壤细菌贝塔多样性的高度模式,在入侵植物和本地植物之间进行比较.
- 为了确定在植物入侵期间驱动细菌社区组成的生态过程.
- 调查环境过,共发生和组装过程的作用.
主要方法:
- 在林山脉的高度梯度沿着土壤细菌β多样性的比较分析.
- 评估物种周转率及其对β多样性的贡献.
- 评估社区集会过程,包括环境过和共发生模式.
主要成果:
- 在本地和入侵社区中,物种交换是细菌不相似的主要驱动因素.
- 在入侵期间,物种交换对β多样性的贡献减少了.
- 细菌的不相似性和周转率显示出一个双项模式,高度转折点在1413米.
- 侵入导致组装过程的贡献减少,并增加了同时发生的模式.
结论:
- 植物入侵将细菌社区的组合从以利基为基础的过程转移到物种相互依赖.
- 侵入性植物改变了土壤的生化特征,影响了沿海拔梯度的细菌生物地理.
- 种类的相互依赖,而不是利基分割,是侵入性社区细菌生物地理学的关键.
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