A phylogenetic perspective on the distribution of plant diversity
A phylogenetic perspective on the distribution of plant diversity
复制标题
DOI：
10.1073/pnas.0801962105
复制
发表时间：
2008-08-12
影响因子：
11.1
通讯作者：
Donoghue, Michael J.
中科院分区：
文献类型：
--
作者：
Donoghue, Michael J.
系统发育研究表明，主要生态位在进化史上比预期的更为保守，这意味着对主要气候变化的适应并不是在所有谱系中都很容易完成的。系统发育生态位保守性对本地群落和区域物种库的聚集都有重要的影响。如果有活动的通道，新出现的环境往往会被从相关适应已经进化的地区过滤过来的物种所填充，而不是被这些适应的原位进化所填充。例子包括热带植物的洲际分离，植物谱系在耐寒性进化后在北半球的传播，以及北部高山植物辐射到安第斯山脉。这些观察结果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格局中的作用。它们对生物多样性的未来也有影响。
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.