From selection to complementarity: the shift along the abiotic stress gradient in a controlled biodiversity experiment
From selection to complementarity: the shift along the abiotic stress gradient in a controlled biodiversity experiment
复制标题
从选择到互补：受控生物多样性实验中非生物胁迫梯度的转变
DOI：
10.1007/s00442-012-2400-2
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发表时间：
2012
期刊：
影响因子：
2.7
通讯作者：
Li, Wei H.
中科院分区：
文献类型：
--
作者：
Wang, Jiang;Zhang, Chong B.;Chen, Tong;Li, Wei H.
生物多样性的主要机制（选择和互补）对生态系统功能的影响已得到充分研究。然而，环境条件如何影响这两种机制的相对强度仍不清楚。为了回答这个问题，进行了一项受控盆栽实验，分别在低应力（天然土壤）和高应力（尾矿）地块中操纵物种多样性。我们的结果表明，随着非生物胁迫的增加，生物量增加的主要机制从选择转向互补。这种转变的发生是因为物种间的相互作用随着非生物胁迫的增加而变化。竞争在低压力区占主导地位，而便利化在高压力区占主导地位。在低胁迫地块中，特定物种的单一栽培生物量是该物种在混合物中竞争能力的良好指标，并且优势物种显着影响地块生物量。在高胁迫地块中，所有个体物种的耐受指数随着受控物种丰富度的增加而增加，这为促进作用的增强提供了明确的证据。
The effects of principal mechanisms (selection and complementarity) of biodiversity on ecosystem functionality have been well studied. However, it remains unknown how environmental conditions affect the relative strength of these two mechanisms. To answer this question, a controlled pot experiment was conducted in which species diversity was manipulated in low (natural soil) and high stress (mine tailing) plots, respectively. Our results demonstrate that the principal mechanism underlying the increasing biomass shifts from the selection to complementarity with increasing abiotic stress. The shift occurs because species interactions varied with increasing abiotic stress. Competition prevails in low stress plots, while facilitation dominates in high stress plots. In low stress plots, the monoculture biomass of a specific species is a good indicator of the competitive ability of that species in the mixture, and the dominant species significantly affects the plot biomass. In high stress plots, the tolerance indexes of all individual species increase with the manipulated species richness, providing clear evidence for the increasing role of facilitation.
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DOI：
10.1073/pnas.111055298
发表时间：
2001-06-05
影响因子：
11.1
作者：
Mulder, CPH;Uliassi, DD;Doak, DF
通讯作者：
Doak, DF
影响因子：
3.4
作者：
D. Wardle
通讯作者：
D. Wardle
影响因子：
4.8
作者：
Clark, JS
通讯作者：
Clark, JS
DOI：
--
发表时间：
2000
期刊：
Bulletin of The Ecological Society of America
影响因子：
--
作者：
D. Wardle;M. Huston;J. P. Grime;F. Berendse;E. Garnier;W. Lauenroth
通讯作者：
D. Wardle;M. Huston;J. P. Grime;F. Berendse;E. Garnier;W. Lauenroth
影响因子：
64.8
作者：
Callaway, RM;Brooker, RW;Cook, BJ
通讯作者：
Cook, BJ