Functional and phylogenetic diversity as predictors of biodiversity-ecosystem-function relationships
Functional and phylogenetic diversity as predictors of biodiversity-ecosystem-function relationships
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DOI：
10.1890/10-1245.1
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发表时间：
2011-08-01
期刊：
影响因子：
4.8
通讯作者：
Naeem, Shahid
中科院分区：
文献类型：
--
作者：
Flynn, Dan F. B.;Mirotchnick, Nicholas;Naeem, Shahid
生态上重要性状的变异性反映进化分化的程度有多大？利用系统发育多样性(PD)来预测生物多样性对生态系统功能的影响，以及更广泛地说，在群落生态学中利用系统发育信息，在一定程度上取决于对这个问题的回答。然而，还没有在一系列实验中对系统发育多样性和功能多样性(FD)的预测能力进行比较。为了解决系统发育多样性和功能性状变异如何控制生物多样性对生物量生产的影响，我们总结了29个草地植物实验的结果，其中包括对实验中使用的植物物种的系统发育进行了很好的描述，并且获得了大量的性状数据。功能性状变异只与物种间的系统发育距离部分相关，因此所得到的Fd值仅与PD部分相关。尽管有这些差异，FD和PD在所有类似强度的实验中预测了生物多样性的影响，包括排除豆类地块和专注于施肥实验的子集。5个性状(叶片含氮率、株高、比根长、单位面积叶质量和固氮量)的2个和3个性状组合的预测能力最强。PD和FD都可以预测生物多样性对生态系统功能的影响，这表明同时关注群落特征多样性和进化历史可以提高对生物多样性丧失后果的理解。
How closely does variability in ecologically important traits reflect evolutionary divergence? The use of phylogenetic diversity (PD) to predict biodiversity effects on ecosystem functioning, and more generally the use of phylogenetic information in community ecology, depends in part on the answer to this question. However, comparisons of the predictive power of phylogenetic diversity and functional diversity (FD) have not been conducted across a range of experiments. To address how phylogenetic diversity and functional trait variation control biodiversity effects on biomass production, we summarized the results of 29 grassland plant experiments where both the phylogeny of plant species used in the experiments is well described and where extensive trait data are available. Functional trait variation was only partially related to phylogenetic distances between species, and the resulting FD values therefore correlate only partially with PD. Despite these differences, FD and PD predicted biodiversity effects across all experiments with similar strength, including in subsets that excluded plots with legumes and that focused on fertilization experiments. Two-and three-trait combinations of the five traits used here (leaf nitrogen percentage, height, specific root length, leaf mass per unit area, and nitrogen fixation) resulted in the FD values with the greatest predictive power. Both PD and FD can be valuable predictors of the effect of biodiversity on ecosystem functioning, which suggests that a focus on both community trait diversity and evolutionary history can improve understanding of the consequences of biodiversity loss.