Drivers of -diversity along latitudinal gradients revisited
文献类型：期刊论文
| 作者 | Qian, Hong ; Chen, Shengbin ; Mao, Lingfeng ; Ouyang, Zhiyun |
| 刊名 | GLOBAL ECOLOGY AND BIOGEOGRAPHY
 |
| 出版日期 | 2013 |
| 卷号 | 22期号:6页码:659-670 |
| 通讯作者 | Qian, H |
| 中文摘要 | Aim Ecologists have generally agreed that -diversity is driven at least in part by ecological processes and mechanisms of community assembly and is a key determinant of global patterns of species richness. This idea has been challenged by a recent study based on an individual-based null model approach, which aims to account for the species pool. The goal of the present study is twofold: (1) to analyse data sets from different parts of the world to determine whether there are significant latitude-diversity gradients after accounting for the species pool, and (2) to evaluate the validity of the null model. Location Global. Methods A total of 257 forest plots, each being 0.1 ha in size and having 10 0.01-ha subplots, were used. We conducted four sets of analyses. A modified version of Whittaker's -diversity index was used to quantify -diversity for each forest plot. A randomization procedure was used to determine expected -diversity. Results The number of individuals per species, which characterizes species abundance distribution, alone explains 56.884.2% of the variation in observed -diversity. Species pool (-diversity) explained only an additional 2.615.2% of the variation in observed -diversity. Latitude explains 18.6% of the variation in raw deviation in Gentry's global data set, and explains 11.011.6% of the variation in standardized deviation in the global and three regional analyses. Latitude explains 33.246.2% of the variation in the number of individuals per species. Main conclusions Species abundance distribution, rather than species pool size, plays a key role in driving latitude-diversity gradients for -diversity in local forest communities. The individual-based null model is not a valid null model for investigating -diversity gradients driven by mechanisms of local community assembly because the null model incorporates species abundance distributions, which are driven by mechanisms of local community assembly and in turn generate -diversity gradients. |
| 收录类别 | SCI |
| WOS记录号 | WOS:000318512900003 |
| 公开日期 | 2014-06-04 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7301]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Qian, Hong,Chen, Shengbin,Mao, Lingfeng,et al. Drivers of -diversity along latitudinal gradients revisited[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2013,22(6):659-670. |
| APA | Qian, Hong,Chen, Shengbin,Mao, Lingfeng,&Ouyang, Zhiyun.(2013).Drivers of -diversity along latitudinal gradients revisited.GLOBAL ECOLOGY AND BIOGEOGRAPHY,22(6),659-670. |
| MLA | Qian, Hong,et al."Drivers of -diversity along latitudinal gradients revisited".GLOBAL ECOLOGY AND BIOGEOGRAPHY 22.6(2013):659-670. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。