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首页> 外文期刊>Trends in Ecology & Evolution >Trophic Cascades by Large Carnivores: A Case for Strong Inference and Mechanism
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Trophic Cascades by Large Carnivores: A Case for Strong Inference and Mechanism

机译:大型食肉动物的营养级联:一种强烈推理和机制的案例

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摘要

Studies on trophic cascades involving large carnivores typically are limited by a lack of replication and control, giving rise to a spirited debate over the ecological role of these iconic species. We argue that much of this debate can be resolved by decomposing the trophic cascade hypothesis into three constituent inter- actions, quantifying each interaction individually, and accommodating alterna- tive hypotheses. We advocate for a novel approach that couples the rigor characterizing foundational work on trophic cascades (i.e., from studies carried out in mesocosm and whole lake systems) with the conservation relevance of large carnivore-dominated food webs. Because of their iconic status, it is crucial that inferences about the ecological role of large carnivores rise to meet the same rigorous standards to which other studies in community ecology are held.
机译:涉及大肉生病患者的营养级联的研究通常受到缺乏复制和控制的限制,从而引起了这些标志性物种的生态作用的激烈争论。 我们认为,可以通过将繁殖级联假设分解为三个组成部分,单独定量每个互动,并容纳替代假设来解决大部分争论。 我们倡导一种新的方法,使严谨性地对营养级联的基础作用(即,来自Mesocosm和整个湖泊系统中的研究),具有大型食肉动物主导的食物网的保护相关性。 由于他们的标志性状态,对大食病的生态作用升级以满足相同的严格标准来说,这是至关重要的,以满足社区生态学的其他研究。

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