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首页> 外文期刊>Oikos: A Journal of Ecology >Relative roles of top-down and bottom-up forces in terrestrial tritrophicplant-insect herbivore-natural enemy systems [Review]
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Relative roles of top-down and bottom-up forces in terrestrial tritrophicplant-insect herbivore-natural enemy systems [Review]

机译:自上而下和自下而上的力量在陆地三生植物-昆虫食草动物-天敌系统中的相对作用[综述]

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摘要

Whether resources (bottom-up forces), natural enemies (top-down forces), or both, determine the abundance of insect herbivore populations in plant-insect herbivore-natural enemy systems remains a major issue in population ecology. Unlike recent surveys of the tritrophic literature we do not seek to quantify whether top-down or bottom-up forces predominate in any given set of experimental systems. Acknowledging the dearth of empirical synthesis we employ two contrasting literature surveys to determine whether the plant-insect herbivore-natural enemy literature is currently adequate to form a conceptual synthesis of the relative roles of top-down and bottom-up forces.
机译:资源(自下而上的力量),天敌(自上而下的力量)或两者共同决定植物-昆虫草食动物-天敌系统中昆虫草食动物种群的丰度仍然是种群生态学中的一个主要问题。与最近对三养性文献的调查不同,我们不试图量化在任何给定的实验系统集中是自上而下还是自下而上的力量。认识到缺乏经验综合,我们采用两次对比文献调查来确定目前植物-昆虫草食动物-天敌文献是否足以形成自上而下和自下而上的相对作用的概念性综合。

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