Role of functionally dominant species in varying environmental regimes: evidence for the performance-enhancing effect of biodiversity.
Role of functionally dominant species in varying environmental regimes: evidence for the performance-enhancing effect of biodiversity.
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DOI：
10.1186/1472-6785-12-14
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发表时间：
2012-07-30
期刊：
影响因子：
--
通讯作者：
Solan M
中科院分区：
文献类型：
--
作者：
Langenheder S;Bulling MT;Prosser JI;Solan M
理论表明，生物多样性可以通过两种主要机制作为对干扰和环境变化的缓冲：第一，通过减少补偿过程引起的生态系统功能的时间变化而产生的稳定效应;第二，通过选择表现更好的物种来提高群落反应水平而产生的性能增强效应。生物多样性的稳定作用的经验证据是现成的，而生物多样性的性能增强效果的实验确认是稀疏的。在这里，我们测试不同的环境制度（恒定与波动的温度）对细菌生物多样性生态系统功能关系的影响。我们发现，物种丰富度对生态系统功能的积极影响是增强了更强的温度波动，由于个别物种的性能提高。我们的研究结果提供了证据的性能增强效果，并建议选择功能优势种可能有利于在更多变的条件下维持生态系统功能。
Theory suggests that biodiversity can act as a buffer against disturbances and environmental variability via two major mechanisms: Firstly, a stabilising effect by decreasing the temporal variance in ecosystem functioning due to compensatory processes; and secondly, a performance enhancing effect by raising the level of community response through the selection of better performing species. Empirical evidence for the stabilizing effect of biodiversity is readily available, whereas experimental confirmation of the performance-enhancing effect of biodiversity is sparse. Here, we test the effect of different environmental regimes (constant versus fluctuating temperature) on bacterial biodiversity-ecosystem functioning relations. We show that positive effects of species richness on ecosystem functioning are enhanced by stronger temperature fluctuations due to the increased performance of individual species. Our results provide evidence for the performance enhancing effect and suggest that selection towards functionally dominant species is likely to benefit the maintenance of ecosystem functioning under more variable conditions.
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影响因子：
3.7
作者：
Langenheder S;Bulling MT;Solan M;Prosser JI
通讯作者：
Prosser JI
影响因子：
2.7
作者：
GAEDEKE, A;SOMMER, U
通讯作者：
SOMMER, U
影响因子：
11.6
作者：
Hillebrand, Helmut;Soininen, Janne;Snoeijs, Pauline
通讯作者：
Snoeijs, Pauline
影响因子：
3.4
作者：
Caldeira, MC;Hector, A;Pereira, JS
通讯作者：
Pereira, JS
影响因子：
8.8
作者：
Ives, AR;Klug, JL;Gross, K
通讯作者：
Gross, K