A skewed literature: Few studies evaluate the contribution of predation-risk effects to natural field patterns,Ecology Letters

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A skewed literature: Few studies evaluate the contribution of predation-risk effects to natural field patterns
Ecology Letters ( IF 7.6 ) Pub Date : 2022-08-04 , DOI: 10.1111/ele.14075
Scott D Peacor ₁ , Nathan J Dorn ₂ , Justine A Smith ₃ , Nicole E Peckham ₄ , Michael J Cherry ₅ , Michael J Sheriff ₆ , David L Kimbro ₄

Affiliation

A narrative in ecology is that prey modify traits to reduce predation risk, and the trait modification has costs large enough to cause ensuing demographic, trophic and ecosystem consequences, with implications for conservation, management and agriculture. But ecology has a long history of emphasising that quantifying the importance of an ecological process ultimately requires evidence linking a process to unmanipulated field patterns. We suspected that such process-linked-to-pattern (PLP) studies were poorly represented in the predation risk literature, which conflicts with the confidence often given to the importance of risk effects. We reviewed 29 years of the ecological literature which revealed that there are well over 4000 articles on risk effects. Of those, 349 studies examined risk effects on prey fitness measures or abundance (i.e., non-consumptive effects) of which only 26 were PLP studies, while 275 studies examined effects on other interacting species (i.e., trait-mediated indirect effects) of which only 35 were PLP studies. PLP studies were narrowly focused taxonomically and included only three that examined unmanipulated patterns of prey abundance. Before concluding a widespread and influential role of predation-risk effects, more attention must be given to linking the process of risk effects to unmanipulated patterns observed across diverse ecosystems.

中文翻译：

歪曲的文献：很少有研究评估捕食风险效应对自然场模式的贡献

生态学的一种说法是，猎物会改变性状以降低捕食风险，而性状改变的成本足以导致随之而来的人口、营养和生态系统后果，并对保护、管理和农业产生影响。但生态学长期以来一直强调量化生态过程的重要性最终需要将过程与未经操纵的田间模式联系起来的证据。我们怀疑这种过程关联模式 (PLP) 研究在捕食风险文献中的代表性不足，这与通常对风险影响重要性的信心相冲突。我们回顾了 29 年的生态文献，这些文献表明有 4000 多篇关于风险影响的文章。其中，349 项研究检查了风险对猎物健康指标或丰度的影响（即，非消耗性影响），其中只有 26 项是 PLP 研究，而 275 项研究检查了对其他相互作用物种的影响（即性状介导的间接影响），其中只有 35 项是 PLP 研究。PLP 研究在分类学上的关注范围很窄，仅包括三个检查未经处理的猎物丰度模式的研究。在总结捕食风险效应的广泛和有影响力的作用之前，必须更多地关注将风险效应过程与在不同生态系统中观察到的未经操纵的模式联系起来。

更新日期：2022-08-04

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