Functional distinctiveness of major plant lineages
Functional distinctiveness of major plant lineages
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DOI：
10.1111/1365-2745.12208
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发表时间：
2014-03-01
影响因子：
5.5
通讯作者：
Zanne, Amy E.
中科院分区：
文献类型：
--
作者：
Cornwell, William K.;Westoby, Mark;Zanne, Amy E.
不同物种之间的植物特征差异很大，并支持生态策略的差异。尽管几个世纪以来人们对不同进化谱系对现代功能多样性的贡献感兴趣，但仍然很难量化。扩大植物性状的数据库加上快速改进的遗传学，首次实现了高等植物主要分支的植物功能多样性的数据驱动的全球图景。我们将与代谢、资源竞争和生殖策略相关的5个关键性状映射到全球48324种维管植物物种的遗传学上，沿着气候和地理数据。使用一种新的度量，我们测试是否主要植物谱系功能独特。然后，我们强调了在当今生态策略传播中最具功能性的特征-谱系组合。对于某些特征-进化枝组合，知道一个物种的进化枝对新生态学家和古生态学家来说几乎没有什么信息。在其他性状-进化枝组合中，进化枝身份可以高度揭示，特别是信息丰富的进化枝-性状组合包括Proteaceae，其高度独特，代表了叶经济谱的全球缓慢极端。木兰科和蔷薇科贡献大的叶大小和种子质量，并有独特的温暖，潮湿的气候分布。这项分析提供了一个最具特色的性状谱系组合的候选名单，沿着与他们的地理和气候背景：现存的功能多样性的维管植物的顶端的全局视图。
Plant traits vary widely across species and underpin differences in ecological strategy. Despite centuries of interest, the contributions of different evolutionary lineages to modern‐day functional diversity remain poorly quantified.Expanding data bases of plant traits plus rapidly improving phylogenies enable for the first time a data‐driven global picture of plant functional diversity across the major clades of higher plants. We mapped five key traits relevant to metabolism, resource competition and reproductive strategy onto a phylogeny across 48324 vascular plant species world‐wide, along with climate and biogeographic data. Using a novel metric, we test whether major plant lineages are functionally distinctive. We then highlight the trait–lineage combinations that are most functionally distinctive within the present‐day spread of ecological strategies.For some trait–clade combinations, knowing the clade of a species conveys little information to neo‐ and palaeo‐ecologists. In other trait–clade combinations, the clade identity can be highly revealing, especially informative clade–trait combinations include Proteaceae, which is highly distinctive, representing the global slow extreme of the leaf economic spectrum. Magnoliidae and Rosidae contribute large leaf sizes and seed masses and have distinctively warm, wet climatic distributions.Synthesis. This analysis provides a shortlist of the most distinctive trait–lineage combinations along with their geographic and climatic context: a global view of extant functional diversity across the tips of the vascular plant phylogeny.