环境过,而不是分散历史,解释了种子植物在深层进化时间尺度上的基因轮流的全球模式
Lirong Cai1,2, Holger Kreft3,4,5, Pierre Denelle3
1Biodiversity, Macroecology and Biogeography, University of Göttingen, Göttingen, Germany. lcai@uni-goettingen.de.
Nature ecology & evolution
|November 29, 2024
概括
环境过和分散历史塑造了植物生物多样性模式. 环境的不相似性强烈影响物种的交换,而地理距离的影响随着进化时间的推移而减弱.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 生物地理学是生物地理学.
背景情况:
- 植物分布是由环境过和分散形成的.
- 遗传学β多样性是理解生物多样性结构的一个关键指标.
- 生态和历史因素在进化时间尺度上的相互作用仍然不清楚.
研究的目的:
- 调查环境差异和地理距离对植物分类学和植物遗传学营业额的影响.
- 评估这些因素在不同的进化时间尺度中如何变化.
- 了解环境过和分散在全球植物生物多样性中的作用.
主要方法:
- 分析了全球约27万种种子植物物种.
- 计算的遗传学和分类学营业额.
- 量化环境差异和地理距离 (线性和最低成本).
- 纳入古地理重建以建模过去的分散障碍.
主要成果:
- 环境差异和地理距离共同解释了分类学 (高达86.4%) 和家族遗传学 (高达65.6%) 营业额的显著差异.
- 环境差异始终对营业额产生强烈的积极影响.
- 在更深的进化时间里,地理距离对遗传轮流的影响减少了.
- 过去的生理地理障碍解释了有限的变化,在中间时间尺度 (20-50万年前) 达到顶峰.
结论:
- 环境过在整个进化时间尺度上对植物范围的扩张留下了持久的印记.
- 虽然古代血统广泛分散,但环境条件继续塑造生物多样性模式.
- 研究结果提供了对推动全球植物生物多样性的生态和进化过程的见解.
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