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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >A phylogenetic perspective on the distribution of plant diversity
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A phylogenetic perspective on the distribution of plant diversity

机译：植物多样性分布的系统发育视角

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摘要

Phylogenetic studies are revealing that major ecological niches are more conserved through evolutionary history than expected, implying that adaptations to major climate changes have not readily been accomplished in all lineages. Phylogenetic niche conservatism has important consequences for the assembly of both local communities and the regional species pools from which these are drawn. If corridors for movement are available, newly emerging environments will tend to be filled by species that filter in from areas in which the relevant adaptations have already evolved, as opposed to being filled by in situ evolution of these adaptations. Examples include intercontinental disjunctions of tropical plants, the spread of plant lineages around the Northern Hemisphere after the evolution of cold tolerance, and the radiation of northern alpine plants into the Andes. These observations highlight the role of phylogenetic knowledge and historical biogeography in explanations of global biodiversity patterns. They also have implications for the future of biodiversity.
机译：系统发育研究表明，进化史上对主要生态位的保护比预期的要多，这意味着对主要气候变化的适应并非在所有世系中都容易完成。系统发育的生态位保守性对当地社区和从中汲取这些资源的区域物种库的组装都具有重要的影响。如果有活动的走廊，那么新出现的环境将趋向于从已经适应相关适应性变化的地区过滤掉的物种，而不是被这些适应性原位进化所填充。例如，热带植物的洲际分离，耐寒性演变后植物谱系在北半球的分布以及北部高山植物向安第斯山脉的辐射。这些观察突出了系统发育知识和历史生物地理学在解释全球生物多样性模式中的作用。它们也对生物多样性的未来产生影响。

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