Phylogenetic community structure and phylogenetic turnover across space and edaphic gradients in western Amazonian tree communities
Phylogenetic community structure and phylogenetic turnover across space and edaphic gradients in western Amazonian tree communities
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DOI：
10.1111/j.1600-0587.2010.06548.x
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发表时间：
2011-08-01
期刊：
影响因子：
5.9
通讯作者：
Kembel, Steven W.
中科院分区：
文献类型：
--
作者：
Fine, Paul V. A.;Kembel, Steven W.
生态和进化过程在地方和区域尺度上影响着群落的聚集。增加一个系统发育方面的物种周转的研究，允许测试的程度，环境梯度，地理距离和历史谱系的物种形成和扩散的影响在整个地区。我们比较措施的β多样性，系统发育的社区结构和β多样性（社区之间的系统发育距离）在34个地块的亚马逊河流域树木在60 000平方公里的面积在洛雷托，秘鲁的白沙和粘土地Firme森林。白沙森林中的优势类群的遗传聚类，与环境过滤的保守性状。Phylobetadiversity措施发现，地理距离< 200-300 km的陆生植物群落之间存在显著的系统发育聚类，这与安第斯山脉山麓附近中新世年龄的粘土森林中流域尺度上最近的当地物种形成一致。虽然距离和栖息地类型产生了统计上显着的影响，两个物种和系统发育的营业额，我们观察到的模式是更一致的栖息地专业化的效果比扩散限制。我们的研究结果表明，大规模的地理和进化过程中的作用，以及栖息地的专业化，影响亚马逊森林的社区结构。
Ecological and evolutionary processes influence community assembly at both local and regional scales. Adding a phylogenetic dimension to studies of species turnover allows tests of the extent to which environmental gradients, geographic distance and the historical biogeography of lineages have influenced speciation and dispersal of species throughout a region. We compare measures of beta diversity, phylogenetic community structure and phylobetadiversity (phylogenetic distance among communities) in 34 plots of Amazonian trees across white-sand and clay terra firme forests in a 60 000 square kilometer area in Loreto, Peru. Dominant taxa in white-sand forests were phylogenetically clustered, consistent with environmental filtering of conserved traits. Phylobetadiversity measures found significant phylogenetic clustering between terra firme communities separated by geographic distances of < 200-300 km, consistent within recent local speciation at the watershed scale in the Miocene-aged clay-soil forests near the foothills of the Andes. Although both distance and habitat type yielded statistically significant effects on both species and phylogenetic turnover, the patterns we observed were more consistent with an effect of habitat specialization than dispersal limitation. Our results suggest a role for both broad-scale biogeographic and evolutionary processes, as well as habitat specialization, influencing community structure in Amazonian forests.