文献类型：期刊文献

英文题名：Strong Neutral Spatial Effects Shape Tree Species Distributions across Life Stages at Multiple Scales

作者：Hu, Yue-Hua[1,2] Lan, Guo-Yu[3,4] Sha, Li-Qing[1] Cao, Min[1] Tang, Yong[1] Li, Yi-De[2] Xu, Da-Ping[2]

第一作者：Hu, Yue-Hua

通信作者：Hu, YH[1]

机构：[1]Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla, Yunnan, Peoples R China;[2]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou, Guangdong, Peoples R China;[3]Minist Agr, Danzhou Key Field Stn Observat & Res Trop Agr Res, Danzhou, Hainan, Peoples R China;[4]Chinese Acad Trop Agr Sci, Rubber Res Inst, Danzhou, Hainan, Peoples R China

年份：2012

卷号：7

期号：5

外文期刊名：PLOS ONE

收录：;Scopus(收录号：2-s2.0-84861544409);WOS:【SCI-EXPANDED(收录号:WOS:000305349600075)】；

基金：This study was supported by a grant from the National Science Foundation of China (31061160188) and a grant from the Queensland-Chinese Academy of Science Joint Biotechnology Projects (GJHZ1130). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

语种：英文

摘要：Traditionally, ecologists use lattice (regional summary) count data to simulate tree species distributions to explore species coexistence. However, no previous study has explicitly compared the difference between using lattice count and basal area data and analyzed species distributions at both individual species and community levels while simultaneously considering the combined scenarios of life stage and scale. In this study, we hypothesized that basal area data are more closely related to environmental variables than are count data because of strong environmental filtering effects. We also address the contribution of niche and the neutral (i.e., solely dependent on distance) factors to species distributions. Specifically, we separately modeled count data and basal area data while considering life stage and scale effects at the two levels with simultaneous autoregressive models and variation partitioning. A principal coordinates of neighbor matrix (PCNM) was used to model neutral spatial effects at the community level. The explained variations of species distribution data did not differ significantly between the two types of data at either the individual species level or the community level, indicating that the two types of data can be used nearly identically to model species distributions. Neutral spatial effects represented by spatial autoregressive parameters and the PCNM eigenfunctions drove species distributions on multiple scales, different life stages and individual species and community levels in this plot. We concluded that strong neutral spatial effects are the principal mechanisms underlying the species distributions and thus shape biodiversity spatial patterns.