The Diversification of Flowering Plants through Time and Space: Key Innovations, Climate and Chance
The Diversification of Flowering Plants through Time and Space: Key Innovations, Climate and Chance
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开花植物随时间和空间的多样化：关键创新、气候和机遇
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
T. Barraclough
中科院分区：
文献类型：
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作者：
T. Davies;T. Barraclough
显花植物代表了最近地质时代最大的陆地进化辐射之一。目前的估计表明，可能有多达50万现存物种，但在被子植物物种丰富度可以在几个数量级之间的密切相关的分支和地理区域之间的变化。理解为什么某些地区和某些谱系比其他地区和谱系包含更多的物种一直是生物学的一个重大挑战。迄今为止，研究这两种模式的方法大多是分开的。传统的解释9579_C010.fm第149页星期六，2006年11月11日上午11时54分© 2007年泰勒和弗朗西斯集团，有限责任公司150重建生命之树分类不平衡集中在关键的生物特征，而物种丰富度的区域变化主要归因于环境因素。使用显花植物的生命树，我们表明，环境可以解释大部分的系统发育树内的分类学不平衡明显的关键性状，和不平等的多样化率，性状和环境之间的相互作用的产物，可能有助于区域模式的物种丰富度。
The flowering plants represent one of the largest terrestrial evolutionary radiations within recent geological times. Current estimates indicate there may be as many as half a million extant species, yet within the angiosperms species richness can vary over several orders of magnitude between closely related clades and between geographical regions. Understanding why some regions and some lineages contain more species than others has been a major challenge in biology. To date, approaches for studying these two patterns have been mostly separate. Traditional explanations for 9579_C010.fm Page 149 Saturday, November 11, 2006 11:54 AM © 2007 by Taylor & Francis Group, LLC 150 Reconstructing the Tree of Life taxonomic imbalance have focused upon key biological traits, whilst regional variation in species richness has been ascribed largely to environmental factors. Using a tree of life for flowering plants, we demonstrate that environment can explain much of the taxonomic imbalance evident within phylogenetic trees not explained by key traits, and unequal rates of diversification, a product of the interaction between traits and environment, may contribute to regional patterns in species richness.