Exploring tree-habitat associations in a Chinese subtropical forest plot using a molecular phylogeny generated from DNA barcode loci.
Exploring tree-habitat associations in a Chinese subtropical forest plot using a molecular phylogeny generated from DNA barcode loci.
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DOI：
10.1371/journal.pone.0021273
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发表时间：
2011
期刊：
影响因子：
3.7
通讯作者：
Ge XJ
中科院分区：
文献类型：
--
作者：
Pei N;Lian JY;Erickson DL;Swenson NG;Kress WJ;Ye WH;Ge XJ
阐明亚热带森林群落聚集的生态机制仍然是生态学家面临的主要挑战。物种聚集成群落的原因可能是栖息地群落的种间差异，越来越多的证据表明，这些群落在当代陆地群落中可能具有潜在的系统发育结构。换句话说，通过检查密切相关物种偏爱相似栖息地的程度以及它们共同出现的程度，生态学家能够推断群落聚集的机制。在这里，我们在中国的一个不同的亚热带乔木群落中实施了这种方法，使用了一个长期的森林动态图和一个由三个DNA条形码基因座生成的分子系统发育图。我们发现，在植物-生境联合中存在着系统发育信号(即，密切相关的物种倾向于喜欢相似的生境)，并且生境内共同出现的模式在系统发育上通常是非随机的。特别是，我们在这片森林的山谷和低坡生境中发现了系统发育聚集性，表明谱系筛选在这些生境的群落结构中起主导作用，我们发现在高坡度、山脊顶和高沟生境中系统发育过度分散的证据，表明远缘物种倾向于在这些高海拔生境中共存，而谱系筛选在这些群落结构中的重要性不大。因此，我们推断，作用于进化上保守的栖息地偏好的非中性生态位过程解释了所研究森林中局部尺度群落的组装。
Elucidating the ecological mechanisms underlying community assembly in subtropical forests remains a central challenge for ecologists. The assembly of species into communities can be due to interspecific differences in habitat associations, and there is increasing evidence that these associations may have an underlying phylogenetic structure in contemporary terrestrial communities. In other words, by examining the degree to which closely related species prefer similar habitats and the degree to which they co-occur, ecologists are able to infer the mechanisms underlying community assembly. Here we implement this approach in a diverse subtropical tree community in China using a long-term forest dynamics plot and a molecular phylogeny generated from three DNA barcode loci. We find that there is phylogenetic signal in plant-habitat associations (i.e. closely related species tend to prefer similar habitats) and that patterns of co-occurrence within habitats are typically non-random with respect to phylogeny. In particular, we found phylogenetic clustering in valley and low-slope habitats in this forest, indicating a filtering of lineages plays a dominant role in structuring communities in these habitats and we found evidence of phylogenetic overdispersion in high-slope, ridge-top and high-gully habitats, indicating that distantly related species tended to co-occur in these high elevation habitats and that lineage filtering is less important in structuring these communities. Thus we infer that non-neutral niche-based processes acting upon evolutionarily conserved habitat preferences explain the assembly of local scale communities in the forest studied.
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DOI：
10.1073/pnas.0909820106
发表时间：
2009-11-03
影响因子：
11.1
作者：
Kress, W. John;Erickson, David L.;Bermingham, Eldredge
通讯作者：
Bermingham, Eldredge
影响因子：
4.8
作者：
Kelly, Colleen K.;Bowler, Michael G.;Harvey, Paul H.
通讯作者：
Harvey, Paul H.
影响因子：
3.4
作者：
Li, Lin;Huang, Zhongliang;He, Fangliang
通讯作者：
He, Fangliang
影响因子：
3.7
作者：
Fazekas AJ;Burgess KS;Kesanakurti PR;Graham SW;Newmaster SG;Husband BC;Percy DM;Hajibabaei M;Barrett SC
通讯作者：
Barrett SC
影响因子：
2.7
作者：
Rabosky, Daniel L.;Reid, Julian;Foulkes, Jeff
通讯作者：
Foulkes, Jeff