植物多样性对生物多样性实验中的多性相互作用的自下而上的影响
Christoph Scherber1, Nico Eisenhauer, Wolfgang W Weisser
1Georg-August-University Göttingen, Department of Crop Sciences, Agroecology, Grisebachstrasse 6, 37077 Göttingen, Germany. christoph.scherber@agr.uni-goettingen.de
Nature
|October 29, 2010
概括
生物多样性丧失影响生态系统服务. 植物多样性的效应在较高的食物营养水平上减弱,食草动物的反应比食肉动物更强烈.
科学领域:
- 生态生态学 生态生态学
- 生态系统科学 生态系统科学
- 生物多样性研究 生物多样性研究
背景情况:
- 生物多样性下降威胁到生态系统的过程和服务.
- 之前的研究表明,生物多样性对有机体的好处跨越了食物营养水平.
- 很少有研究将食物网络动态纳入生物多样性评估中.
研究的目的:
- 研究植物多样性对多性相互作用的影响.
- 使用食物网视角分析地面和地下生物多样性.
- 了解生物多样性的影响如何在热带水平和食肉水平上发生变化.
主要方法:
- 进行了一项为期八年的生物多样性实验.
- 研究了广泛的地表和地下生物及其相互作用.
- 开发了全面的地面/地下生物多样性食物网.
主要成果:
- 植物多样性的影响随着食物营养水平的增加和食肉的增加而减少.
- 草食动物对植物多样性变化的反应比食肉动物或食肉动物更强烈.
- 地下对植物多样性的反应比地面上的反应弱.
结论:
- 植物多样性对多性相互作用网络产生强烈的自下而上的影响.
- 热带级联间接调解生物多样性的影响在更高的热带水平.
- 观察到对植物多样性的积极反应,除了生物入侵和病原体.
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