通过特征镜头重新审视竞争结果:跨物种来源的全球元分析
Yifeng Cao1, Xiyan Feng1, Li-Hsiang Lin2
1Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, USA.
Nature communications
|November 27, 2025
概括
生物入侵改变了物种特征分布,非本地物种对本地物种的影响更大. 竞争,特别是种内竞争,减少了特征的含量,增加了植物和动物之间的变异.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 生物多样性科学 生物多样性科学
背景情况:
- 生物入侵显著改变了社区竞争动态,并可能导致生物多样性通过竞争排斥而丧失.
- 竞争对物种特征分布的影响尚不完全理解,特别是关于相互影响的物种的来源 (原生与非原生).
研究的目的:
- 调查竞争如何影响全球物种内的特征分布,考虑到竞争者的起源.
- 确定物种来源是否影响竞争诱导的特征变化的强度和模式.
主要方法:
- 综合了来自植物和动物研究的关于物种相互作用和特征分布的全球数据.
- 分析了对竞争的反应特征的含义和变化,区分了原生和非原生竞争者.
- 检查了对特征分布的物种内部与物种间竞争的影响.
主要成果:
- 竞争始终减少特征的平均值,增加特征的变化,呈现出一个方向破坏性模式.
- 非本地物种对本地物种的特征分布的影响要大于反之.
- 形态和生命史的特征高度响应,而化学和生理特征总体上受影响较小,但受到非本土人的不成比例影响.
结论:
- 竞争,特别是非本土物种的种内竞争,在很大程度上影响了特征分布.
- 种类的来源是一个关键因素,它介导了对特征变异的竞争效应.
- 这些发现为了解人类世中的物种相互作用提供了基于特征的框架.
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