Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/ele.12706 |
Light asymmetry explains the effect of nutrient enrichment on grassland diversity | |
DeMalach, Niv1; Zaady, Eli2; Kadmon, Ronen1 | |
2017 | |
发表期刊 | ECOLOGY LETTERS
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ISSN | 1461-023X |
EISSN | 1461-0248 |
出版年 | 2017 |
卷号 | 20期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel |
英文摘要 | One of the most ubiquitous patterns in plant ecology is species loss following nutrient enrichment. A common explanation for this universal pattern is an increase in the size asymmetry of light partitioning (the degree to which large plants receive more light per unit biomass than smaller plants), which accelerates the rates of competitive exclusions. This 'light asymmetry hypothesis' has been confirmed by mathematical models, but has never been tested in natural communities due to the lack of appropriate methodology for measuring the size asymmetry of light partitioning in natural communities. Here, we use a novel approach for quantifying the asymmetry of light competition which is based on measurements of the vertical distribution of light below the canopy. Using our approach, we demonstrate that an increase in light asymmetry is the main mechanism behind the negative effect of nutrient enrichment on species richness. Our results provide a possible explanation for one of the main sources of contemporary species loss in terrestrial plant communities. |
英文关键词 | Annual plants biomass competition fertilization forbs nitrogen productivity richness size asymmetry species loss |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000390026200006 |
WOS关键词 | PLANT-SPECIES RICHNESS ; NITROGEN DEPOSITION ; BIODIVERSITY LOSS ; RESOURCE ADDITIONS ; NICHE DIMENSION ; SIZE ASYMMETRY ; ALPINE MEADOW ; COMPETITION ; FERTILIZATION ; PRODUCTIVITY |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/31192 |
专题 | 资源环境科学 |
作者单位 | 1.Hebrew Univ Jerusalem, Dept Ecol Evolut & Behav, IL-91904 Jerusalem, Israel; 2.Gilat Res Ctr, Minist Agr, Agr Res Org, Dept Nat Resources,Inst Plant Sci, IL-85280 Gilat, Israel |
推荐引用方式 GB/T 7714 | DeMalach, Niv,Zaady, Eli,Kadmon, Ronen. Light asymmetry explains the effect of nutrient enrichment on grassland diversity[J]. ECOLOGY LETTERS,2017,20(1). |
APA | DeMalach, Niv,Zaady, Eli,&Kadmon, Ronen.(2017).Light asymmetry explains the effect of nutrient enrichment on grassland diversity.ECOLOGY LETTERS,20(1). |
MLA | DeMalach, Niv,et al."Light asymmetry explains the effect of nutrient enrichment on grassland diversity".ECOLOGY LETTERS 20.1(2017). |
条目包含的文件 | 条目无相关文件。 |
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