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Updated: May 11, 2026
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Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity
Published on: March 13, 2014
资源利用效率和低资源系统中的植物入侵
Jennifer L Funk1, Peter M Vitousek
1Department of Biological Sciences, Stanford University, Stanford, California 94305-5020, USA. funk@stanford.edu
Nature
|April 27, 2007
概括
侵入性物种在资源有限的环境中往往通过更高效地利用有限的资源而取得成功. 这挑战了本地物种在恶劣息地总是胜过入侵者的想法.
科学领域:
- 生态生态学 生态生态学
- 植物生物学 植物生物学
- 侵入性物种研究 侵入性物种研究
背景情况:
- 侵入性物种的成功取决于息地,富含营养的地区通常会经历更多的入侵.
- 在资源贫乏的环境中入侵物种成功的机制尚不清楚.
- 资源利用效率 (RUE) 是低资源环境中的物种的关键特征.
研究的目的:
- 在夏威夷的不同限制资源条件下调查入侵和本地植物物种的资源利用效率 (RUE).
- 挑战本地物种在资源贫乏息地中优于入侵物种的假设.
主要方法:
- 在三个夏威夷息地研究了入侵性和本土植物物种,光线,水或营养素受到限制.
- 测量和比较资源利用效率 (RUE) 在短时间和叶子寿命的时间表上.
主要成果:
- 侵入性物种在短时间内在各种生长形式和种群中表现出比本地物种更高的RUE.
- 侵袭性和本地物种在叶子寿命中整合时表现出类似的RUE.
- 侵入性物种在利用有限的资源方面非常高效.
结论:
- 与本地物种相比,入侵物种可以拥有更高的资源利用效率 (RUE),即使是在资源有限的环境中.
- 管理资源水平可能不是控制入侵物种的有效策略.
- 这些发现挑战了传统的生态假设,关于在低资源环境中侵入性物种的动态.
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