Latitudinal gradients in phylogenetic relatedness of angiosperm trees in North America
文献类型：SCI/SSCI论文
| 作者 | Qian H. ; Zhang Y. J. ; Zhang J. ; Wang X. L. |
| 发表日期 | 2013 |
| 关键词 | Angiosperm trees cold tolerance community assembly habitat filtering latitudinal diversity gradient phylogenetic community ecology phylogenetic niche conservatism tropical conservatism hypothesis species richness niche conservatism diversity gradient evolutionary constraints spatial autocorrelation community structure global patterns climate ecology biodiversity |
| 英文摘要 | AimTo test two predictions of the phylogenetic niche conservatism hypothesis for the latitudinal diversity gradient: (1) species in colder regions tend to be more phylogenetically related to each other (i.e. greater phylogenetic clustering) than those in warmer regions, and (2) clades are younger in colder regions. LocationNorth America. MethodsCorrelation analysis was used to relate richness, mean clade age and phylogenetic relatedness (measured as phylogenetic species variability and net relatedness index) of angiosperm trees in 1175 regional assemblages (each with 12100 km(2)) to latitude and minimum temperature. The analysis was conducted for North America north of Mexico as a whole as well as for each of the three longitudinal bands (eastern, central and western) of North America. ResultsSpecies richness and mean clade age are negatively correlated with latitude and positively correlated with minimum temperature. Tree species in regional assemblages tend to be more phylogenetically related (clustered) in regions at higher latitudes with lower temperatures. Main conclusionsThe results of this study support two of the major predictions of the phylogenetic niche conservatism hypothesis for the latitudinal diversity gradient: species tend to be more phylogenetically clustered and ages of clades tend to be younger in colder regions, compared with those in warmer regions. |
| 出处 | Global Ecology and Biogeography |
| 卷 | 22 |
| 期 | 11 |
| 页 | 1183-1191 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1466-822X |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30315]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Qian H.,Zhang Y. J.,Zhang J.,et al. Latitudinal gradients in phylogenetic relatedness of angiosperm trees in North America. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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