文献类型：期刊文献

英文题名：Spatial Heterogeneity in Light Supply Affects Intraspecific Competition of a Stoloniferous Clonal Plant

作者：Wang, Pu[1] Lei, Jing-Pin[2] Li, Mai-He[3] Yu, Fei-Hai[1]

第一作者：Wang, Pu

通信作者：Wang, P[1]

机构：[1]Beijing Forestry Univ, Coll Nat Conservat, Beijing, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Beijing, Peoples R China;[3]Swiss Fed Inst Forest Snow & Landscape Res, Birmensdorf, Switzerland

年份：2012

卷号：7

期号：6

外文期刊名：PLOS ONE

收录：;Scopus(收录号：2-s2.0-84862206270);WOS:【SCI-EXPANDED(收录号:WOS:000305341900081)】；

基金：This study was supported by the Fundamental Research Funds for the Central Universities (Grant JC2011-4) and the National Science Foundation of China (Grant 31070371). 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：Spatial heterogeneity in light supply is common in nature. Many studies have examined the effects of heterogeneous light supply on growth, morphology, physiology and biomass allocation of clonal plants, but few have tested those effects on intraspecific competition. In a greenhouse experiment, we grew one (no competition) or nine ramets (with intraspecific competition) of a stoloniferous clonal plant, Duchesnea indica, in three homogeneous light conditions (high, medium and low light intensity) and two heterogeneous ones differing in patch size (large and small patch treatments). The total light in the two heterogeneous treatments was the same as that in the homogeneous medium light treatment. Both decreasing light intensity and intraspecific competition significantly decreased the growth (biomass, number of ramets and total stolon length) of D. indica. As compared with the homogeneous medium light treatment, the large patch treatment significantly increased the growth of D. indica without intraspecific competition. However, the growth of D. indica with competition did not differ among the homogeneous medium light, the large and the small patch treatments. Consequently, light heterogeneity significantly increased intraspecific competition intensity, as measured by the decreased log response ratio. These results suggest that spatial heterogeneity in light supply can alter intraspecific interactions of clonal plants.